WO2025002012A1 - Procédé et dispositif permettant de régler l'état de fonctionnement d'un appareil d'alimentation électrique, et dispositif électronique - Google Patents

Procédé et dispositif permettant de régler l'état de fonctionnement d'un appareil d'alimentation électrique, et dispositif électronique Download PDF

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Publication number
WO2025002012A1
WO2025002012A1 PCT/CN2024/100766 CN2024100766W WO2025002012A1 WO 2025002012 A1 WO2025002012 A1 WO 2025002012A1 CN 2024100766 W CN2024100766 W CN 2024100766W WO 2025002012 A1 WO2025002012 A1 WO 2025002012A1
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WIPO (PCT)
Prior art keywords
power supply
fault
temperature
area
prediction information
Prior art date
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Ceased
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PCT/CN2024/100766
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English (en)
Chinese (zh)
Inventor
周鹏程
宋宝
苏烁
张小利
石春亮
龚有纬
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ZTE Corp
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ZTE Corp
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40—Testing power supplies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
    • G01K3/04—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of time
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/185—Electrical failure alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms

Definitions

  • the embodiments of the present disclosure relate to the field of communications, and in particular, to a method and device for adjusting the working state of a power supply device, and an electronic device.
  • the power supply equipment in the industry (for example, high-voltage DC power supply cabinets) is only equipped with an alarm system after an abnormal situation occurs, and there is no early warning function. It is difficult for operation and maintenance personnel to predict the time and location of the failure in advance. In addition, the existence of the casing makes it difficult to detect internal faults of the equipment. They can only be discovered when the fault is severe enough to cause destructive phenomena. Often at this time, the loss is unavoidable, so many serious accidents cannot be prevented in time.
  • the power supply equipment in the prior art is only equipped with an alarm system after a malicious event caused by a fault occurs, and the problem of the malicious event occurring cannot be avoided.
  • the embodiments of the present disclosure provide a method and device for adjusting the working state of a power supply device, and an electronic device, so as to at least solve the problem in the related art that the power supply device is only equipped with an alarm system after a malicious event caused by a fault occurs, and the occurrence of the malicious event cannot be avoided.
  • a method for adjusting the working state of a power supply device comprising: obtaining parameter information of a first connection point of the power supply device, wherein the parameter information comprises: an electrical parameter, a first temperature; determining fault prediction information of the first connection point according to the parameter information; and when the fault prediction information indicates that a fault exists at the first connection point, adjusting the working state of the power supply device according to the fault prediction information.
  • a device for adjusting the working state of a power supply device comprising: an acquisition module, configured to acquire parameter information of a first connection point of the power supply device, wherein the parameter information comprises: an electrical parameter, a first temperature; a determination module, configured to determine fault prediction information of the first connection point according to the parameter information; and an adjustment module, configured to adjust the working state of the power supply device according to the fault prediction information when the fault prediction information indicates that a fault exists at the first connection point.
  • a computer-readable storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps of any one of the above method embodiments when running.
  • an electronic device including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to implement any one of the above methods. Steps in the examples.
  • the present disclosure it is predicted whether the first connection point will fail based on the electrical parameters and temperature of the first connection point of the power supply device, and when a failure is predicted, the working state of the power supply device is automatically adjusted to intelligently protect the power supply device. Therefore, the problem that the power supply device in the related art is only equipped with an alarm system after a malicious event caused by a fault occurs, and the malicious event cannot be avoided, thereby achieving the technical effect of improving the safety of the power supply device.
  • FIG1 is a hardware structure block diagram of a computer terminal of a method for adjusting the working state of a power supply device according to an embodiment of the present disclosure
  • FIG. 2 is a flow chart of a method for adjusting the working state of a power supply device according to an embodiment of the present disclosure
  • FIG3 is a system block diagram of a high-voltage direct current temperature early warning intelligent control system according to an embodiment of the present disclosure
  • FIG4 is a block diagram of a typical configuration of a high voltage DC power supply cabinet according to an embodiment of the present disclosure
  • FIG5 is a structural block diagram of a device for adjusting the working state of a power supply device according to an embodiment of the present disclosure.
  • FIG1 is a hardware structure block diagram of a computer terminal of a method for adjusting the working state of a power supply device in an embodiment of the present disclosure.
  • the computer terminal may include one or more (only one is shown in FIG1 ) processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor (Microcontroller Unit, MCU) or a programmable logic device (Field Programmable Gate Array, FPGA)) and a memory 104 for storing data, wherein the above-mentioned computer terminal may also include a transmission device 106 and an input and output device 108 for communication functions.
  • MCU Microcontroller Unit
  • FPGA Field Programmable Gate Array
  • FIG1 the structure shown in FIG1 is only for illustration and does not limit the structure of the above-mentioned computer terminal.
  • the computer terminal may also include more or fewer components than those shown in FIG1 , or have a configuration different from that shown in FIG1 .
  • the memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as a computer program corresponding to a method for adjusting the working state of a power supply device in an embodiment of the present disclosure.
  • the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method.
  • the memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.
  • the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the computer terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the transmission device 106 is used to receive or send data via a network.
  • the specific example of the above network may include a wireless network provided by a communication provider of a computer terminal.
  • the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet.
  • the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.
  • RF Radio Frequency
  • FIG. 2 is a flow chart of adjusting the working state of a power supply device according to an embodiment of the present disclosure. As shown in FIG. 2 , the The process includes the following steps:
  • Step S202 obtaining parameter information of a first bonding point of a power supply device, wherein the parameter information includes: electrical parameters and a first temperature;
  • Electrical parameters include but are not limited to: current, voltage, and load rate.
  • Step S204 determining the fault prediction information of the first joint point according to the parameter information
  • determining the fault prediction information of the first connection point according to the parameter information includes: determining whether the prediction function of the intelligent protection unit of the power supply device is turned on, and when the prediction function of the intelligent protection unit of the power supply device is turned on, determining the fault prediction information of the first connection point according to the parameter information.
  • Step S206 When the fault prediction information indicates that the first connection point has a fault, adjust the working state of the power supply device according to the fault prediction information.
  • the above-mentioned faults include: level one faults, level two faults and level three faults, wherein the risk level of the level one fault is lower than the risk level of the level two fault, the risk level of the level two fault is lower than the risk level of the level three fault, or, the risk level of the level one fault is higher than the risk level of the level two fault, the risk level of the level two fault is higher than the risk level of the level three fault.
  • the first-level fault is a minor fault
  • the second-level fault is a moderate fault
  • the third-level fault is a severe fault
  • the first-level fault is a severe fault
  • the second-level fault is a moderate fault
  • the third-level fault is a minor fault
  • the probability of a malicious incident caused by a minor fault is less than or equal to a first preset probability; the probability of a malicious incident caused by a moderate fault is greater than the first preset probability and less than or equal to a second preset probability, and the power supply equipment can reduce the probability of a malicious incident by reducing the load corresponding to the tapping point; the probability of a malicious incident caused by a severe fault is greater than the second preset probability, and the power supply equipment can reduce the probability of a malicious incident by disconnecting all loads at the tapping point.
  • the parameter information of the first connection point of the power supply device is obtained, wherein the parameter information includes: electrical parameters, first temperature; the fault prediction information of the first connection point is determined according to the parameter information; when the fault prediction information indicates that the first connection point has a fault, the working state of the power supply device is adjusted according to the fault prediction information.
  • step S204 may be implemented in a variety of ways. Two implementations are provided in the embodiment of the present disclosure, including:
  • the fault prediction information of the first joint point is determined in the following manner: when the temperature difference between the first temperature and any second temperature is greater than a first preset threshold value and less than a second preset threshold value, it is determined that the first joint point has a primary fault; when the temperature difference between the first temperature and any second temperature is greater than a first preset threshold value and less than a second preset threshold value, it is determined that the first joint point has a primary fault; When the temperature difference between the first temperature and any second temperature is greater than or equal to the third preset threshold and less than the third preset threshold, it is determined that there is a second-level fault at the first joint; when the temperature difference between the first temperature and any second temperature is greater than or equal to the third preset threshold, it is determined that there is a third-level fault at the first joint.
  • the fault prediction information of the first joint is determined according to the following method: when the temperature difference between the first temperature and any second temperature is greater than a first preset threshold and less than a second preset threshold, it is determined that the first joint has a third-level fault; when the temperature difference between the first temperature and any second temperature is greater than or equal to the second preset threshold and less than the third preset threshold, it is determined that the first joint has a second-level fault; when the temperature difference between the first temperature and any second temperature is greater than or equal to the third preset threshold, it is determined that the first joint has a first-level fault.
  • the diagnostic model represents the functional relationship between the first temperature and multiple second temperatures. It is a regression model with the minimum error calculated by the least squares method between the first temperature and the second temperature under normal equipment operation conditions. Due to the strong correlation between the first temperature and the second temperature, the quadratic regression model can meet the error requirements.
  • X1, X2, X3...Xn represent electrical parameters such as current, voltage, and load rate set for fault diagnosis respectively;
  • a1, b1, c1, a2, b2, c2, a3, b3, c3...an, bn, cn represent the variable coefficients in the regression model of each electrical parameter;
  • k represents the correlation coefficient of the diagnostic model, which can be corrected according to the altitude, ambient temperature, and equipment operating time.
  • each electrical parameter value is substituted into the corresponding regression model to calculate the theoretical temperature value (equivalent to the second temperature in the above embodiment). As long as the first temperature value does not satisfy any range of the calculated theoretical temperature values, it is determined that there is a fault at the first overlap point.
  • the electrical parameters in the embodiments of the present disclosure are electrical parameters obtained in real time
  • the first temperature is a temperature value obtained in real time.
  • the corresponding real-time theoretical temperature value is determined according to the real-time electrical parameters
  • the fault prediction information of the first joint is determined by the difference between the real-time theoretical temperature value and the real-time temperature value. Therefore, through the embodiments of the present disclosure, it is possible to determine in real time whether there is a fault at the joint of the power supply equipment, thereby improving the safety of the power supply equipment.
  • the first preset threshold is 5°C
  • the second preset threshold is 10°C
  • the third preset threshold is 20°C.
  • the fault prediction information of the first joint point is determined in the following manner: when the temperature difference between the first temperature and the average temperature is greater than a first preset threshold value and less than a second preset threshold value, it is determined that the first joint point has a primary fault; ... second preset threshold value, it is determined that the first joint point has a primary fault; When the temperature difference between the first temperature and the average temperature is greater than or equal to the third preset threshold, it is determined that there is a level 2 fault at the first joint. When the temperature difference between the first temperature and the average temperature is greater than or equal to the third preset threshold, it is determined that there is a level 3 fault at the first joint.
  • the fault prediction information of the first joint is determined according to the following method: when the temperature difference between the first temperature and the average temperature is greater than a first preset threshold and less than a second preset threshold, it is determined that the first joint has a third-level fault; when the temperature difference between the first temperature and the average temperature is greater than or equal to the second preset threshold and less than the third preset threshold, it is determined that the first joint has a second-level fault; when the temperature difference between the first temperature and the average temperature is greater than or equal to the third preset threshold, it is determined that the first joint has a first-level fault.
  • the temperature values of the joints in the same group are basically close, so if the difference between the first temperature and the average temperature of a joint is too large, it means that there is a fault at the joint.
  • the joints at the same position are grouped together, and the temperature values of the joints at the same position are T1, T2, T3...Tn.
  • the temperature values of the joints at the same position are theoretically consistent, that is, T1 ⁇ T2 ⁇ T3 ⁇ ... ⁇ Tn. If it is found that the temperature value T1 of a joint is too different from the average value of the temperature values of other rectifiers (T2+T3+...+Tn)/(n-1), it means that there is a fault at the joint.
  • the first preset threshold is 5°C
  • the second preset threshold is 10°C
  • the third preset threshold is 20°C.
  • the above-mentioned step S206 can be implemented in the following ways: when the fault prediction information indicates that there is a first-level fault at the first joint, controlling the alarm module of the power supply device to issue an alarm message; when the fault prediction information indicates that there is a second-level fault or a third-level fault at the first joint, determining the location area of the first joint; and adjusting the working state of the power supply device according to the location area and the fault prediction information.
  • the alarm module of the power supply device is controlled to send alarm information in one of the following ways: 1) the alarm module of the power supply device is controlled to send an alarm prompt sound; 2) the display component of the alarm module of the power supply device is controlled to display an alarm prompt light.
  • the working state of the power supply device is adjusted according to the location area and the fault prediction information, including: when the first connection point is located in the first area, the third area, or the seventh area, and the fault prediction information indicates that there is a secondary fault at the first connection point, prohibiting the first load device from being powered by the rectifier of the power supply device, and controlling the power supply to the first load device through the DC power supply unit, wherein the first area is the power supply line from the AC power unit of the power supply device to the circuit breaker connected to the AC power unit, and the third area is the power supply line from the monitoring unit of the power supply device to the AC power supply device.
  • the seventh area is an area corresponding to the power supply line from the DC busbar of the power supply device to the load circuit breaker and from the DC busbar to the battery circuit breaker, the load circuit breaker is a circuit breaker connected to the load device corresponding to the power supply device, and the battery circuit breaker is a circuit breaker connected to the DC power supply unit; when the first connection point is located in the first area or the third area or the seventh area, and the fault prediction information indicates that there is a third-level fault at the first connection point, the circuit breaker is controlled to be disconnected, and the DC power supply unit is controlled to supply power to the second load device corresponding to the power supply device, wherein the The second load device at least includes: the first load device.
  • the above-mentioned monitoring unit can be understood as: a circuit breaker connected to the AC power supply unit, and an automatic transfer switch connected to the AC power supply unit.
  • the first area can be understood as area A in scene one as shown in Figure 4, which is mainly the power supply line from the AC power (equivalent to the AC power supply unit in the above embodiment) to the circuit breaker (equivalent to the circuit breaker connected to the AC power supply unit in the above embodiment);
  • the third area can be understood as area B as shown in Figure 4, which is mainly the power supply line from the circuit breaker of the power supply equipment or the automatic transfer switch to the AC busbar of the power supply equipment;
  • the seventh area can be understood as area F as shown in Figure 4, which is mainly the power supply line between the DC busbar to the load circuit breaker and the battery circuit breaker.
  • the circuit breaker is controlled to disconnect, and the load is completely powered by the DC power supply unit.
  • the working state of the power supply device is adjusted according to the location area and the fault prediction information, including: when the first tapping point is located in the second area and the fault prediction information indicates that the first tapping point has a secondary fault, controlling the automatic transfer switch of the power supply device to disconnect the connection with the mains power unit with risk, and establishing a connection with the mains power unit without risk, wherein the second area is the power supply line from the AC power unit of the power supply device to the automatic transfer switch connected to the AC power unit, and the AC power unit includes: the mains power unit with risk and the mains power unit without risk; when the first tapping point is located in the second area and the fault prediction information indicates that the first tapping point has a tertiary fault, controlling the automatic transfer switch of the power supply device to disconnect the connection with the mains power unit with risk, and establishing a connection with the mains power unit without risk.
  • the second area can be understood as the A area in the second scene as shown in FIG4, which is mainly the power supply line from the mains to the ATS (automatic transfer switch).
  • the ATS is controlled to switch to the mains without risk;
  • the ATS is controlled to switch to the mains without risk.
  • adjusting the working state of the power supply device according to the location area and the fault prediction information includes: when the first connection point is located in the fourth area, the fifth area, or the sixth area, and the fault prediction information indicates that the first connection point has a secondary fault, prohibiting the third load device from being powered by the rectifier corresponding to the first connection point, and powering the third load device through other rectifiers of the power supply device, wherein the fourth area is a power supply line from the AC busbar of the power supply device to the rectifier circuit breaker of the power supply device, the fifth area is a power supply line from the rectifier circuit breaker to the rectifier of the power supply device, and the sixth area is a power supply line from the rectifier to the DC busbar of the power supply device, and the rectifier circuit breaker is a circuit breaker connected to the rectifier; when the first connection point is located in the fourth area, the fifth area, or the sixth area, and the fault prediction information indicates that the first connection point has a tertiary fault, controlling the rectifier circuit breaker
  • the fourth area can be understood as the C area shown in Figure 4, which is mainly the AC busbar to each The power supply line between the rectifier circuit breakers;
  • the fifth area can be understood as the D area as shown in Figure 4, which is mainly the power supply line between the rectifier circuit breaker and the input end of the rectifier;
  • the sixth area can be understood as the E area as shown in Figure 4, which is mainly the power supply line between the output end of each rectifier and the DC busbar.
  • the rectifier corresponding to the fault position is adjusted to reduce the load, and the other rectifiers are adjusted to load to share the load;
  • the circuit breaker of the rectifier at the fault position is controlled to be disconnected, and the other rectifiers are adjusted to load to share the load.
  • the working state of the power supply device is adjusted according to the location area and the fault prediction information, including: when the first tapping point is located in the eighth area and the fault prediction information indicates that there is a secondary fault at the first tapping point, prohibiting the DC power supply unit corresponding to the first tapping point from supplying power to the fourth load device, and controlling the rectifier of the power supply device to supply power to the fourth load device, wherein the eighth area is the power supply line between the battery circuit breaker corresponding to the DC power supply unit and the DC power supply unit; when the first tapping point is located in the eighth area and the fault prediction information indicates that there is a tertiary fault at the first tapping point, controlling the battery circuit breaker to disconnect, and controlling the load device corresponding to the DC power supply unit to supply power.
  • the eighth area can be understood as the G area shown in FIG. 4 , which is mainly a power supply line from the battery circuit breaker to the battery.
  • the rectifier load is adjusted and the battery load is reduced; when the first tapping point is located at a certain position on G in Figure 4 and the fault prediction information indicates that there is a tertiary fault at the first tapping point, the battery circuit breaker is disconnected.
  • adjusting the working state of the power supply device according to the location area and the fault prediction information includes: when the first tapping point is located in the ninth area and the fault prediction information indicates that the first tapping point has a secondary fault, controlling the load circuit breaker corresponding to the first tapping point to be disconnected, and controlling the fifth load device corresponding to the load circuit breaker to be powered through a DC power supply unit, wherein the ninth area is a power supply line between the load circuit breaker and the load device corresponding to the load circuit breaker; when the first tapping point is located in the ninth area and the fault prediction information indicates that the first tapping point has a tertiary fault, controlling the load circuit breaker corresponding to the first tapping point to be disconnected, and controlling the fifth load device corresponding to the load circuit breaker to be powered through a DC power supply unit.
  • the ninth area can be understood as the H area shown in FIG. 4 , which is mainly the power supply line between the load circuit breaker and the load.
  • the load circuit breaker When the first tapping point is located at a certain position on H in Figure 4 and the fault prediction information indicates that the first tapping point has a secondary fault, the load circuit breaker is disconnected and the backup power supply line of the load is enabled; when the first tapping point is located at a certain position on H in Figure 4 and the fault prediction information indicates that the first tapping point has a tertiary fault, the load circuit breaker is disconnected and the backup power supply line of the load is enabled.
  • FIG3 is a system block diagram of a high-voltage direct current temperature early warning intelligent control system according to an embodiment of the present disclosure. As shown in FIG3 , the system block diagram mainly includes a data acquisition unit, a fault diagnosis unit, and an intelligent protection unit.
  • the data acquisition unit is configured to collect the temperature and electrical parameters of multiple important bonding points on the high-voltage DC equipment and upload them to the fault diagnosis unit.
  • the fault diagnosis unit is configured to predict the fault risk point by using an algorithm to analyze the received temperature and electrical parameter data, and send an alarm to the intelligent protection unit according to the prediction result.
  • the intelligent protection unit is set to prompt the operation and maintenance personnel to go to the site to inspect and maintain the specific fault location of the equipment according to the alarm information. For risk points predicted to be malignant faults, the intelligent protection unit will automatically adjust the working status of the equipment according to the location of the risk point to provide intelligent protection for the equipment.
  • the temperature warning control system mainly includes three parts: a data acquisition unit, a fault diagnosis unit, and an intelligent protection unit. It needs to have communication interfaces such as CAN, RS485, RS232, RS422, and an Internet port.
  • the processor chip needs to meet the computing requirements, and a certain amount of data storage space needs to be reserved in the hardware.
  • the data acquisition unit mainly collects the temperature and electrical parameters of multiple important bonding points on the high-voltage DC equipment and uploads them to the fault diagnosis unit.
  • Temperature acquisition can be achieved by using sensor measurement circuit solutions such as platinum resistance, NTC, PTC, thermocouple, optical fiber, etc.;
  • Electrical parameters include: voltage, current, power, load rate, harmonics, frequency, power factor, etc. Electrical parameters can be collected through current sensors combined with analog detection circuits, or through electric meters with communication functions;
  • the joint points where data needs to be collected cover all spatial areas of the high-voltage DC power supply cabinet, especially the joint points with high failure rates, such as the input and output ends of the rectifier, the joints between batteries, the joints between load wiring and copper busbars, the joints between copper busbars and battery wiring, and the joints between copper busbars of parallel cabinets.
  • the fault diagnosis unit performs fault prediction on the received joint temperature and electrical parameters through algorithm analysis, and sends an alarm to the intelligent protection unit according to the prediction result.
  • the fault diagnosis unit mainly performs fault diagnosis by comparative analysis.
  • the embodiment of the present disclosure provides two comparative analysis methods. When it is confirmed that the high-voltage DC power supply cabinet has a fault by one of the comparative analysis methods, it is determined that the high-voltage DC power supply cabinet has a fault:
  • Method 1 Substitute the received temperature and electrical parameter data into the diagnostic model for comparative analysis to determine the abnormal temperature value; the diagnostic model represents the functional relationship between the joint temperature and multiple electrical parameters. It is a regression model with the minimum error calculated by the least squares method using the joint temperature and electrical parameter data (factory test data) under normal equipment operation conditions (no faults). Due to the strong correlation between temperature and electrical parameters, the quadratic regression model can meet the error requirements; for example, the regression model of a joint position is as follows:
  • T k(a1X1 2 +b1X1+c1)
  • T k(a2X2 2 +b2X2+c2)
  • T k(a3X3 2 +b3X3+c3)
  • T k( anXn2 +bnXn+cn);
  • T represents the temperature value of the joint point
  • X1, X2, X3, Xn respectively represent the electrical parameters set for fault diagnosis, such as current, voltage, and load rate
  • a1, b1, c1, a2, b2, c2, a3, b3, c3...an, bn, cn represent the variable coefficients in the regression model of each electrical parameter
  • k represents the correlation coefficient of the diagnostic model, which can be corrected according to the altitude, ambient temperature, and equipment operating time.
  • each real-time electrical parameter value will be substituted into the corresponding regression model to calculate the theoretical temperature value. As long as the real-time temperature value does not meet the theoretical temperature value range calculated by any regression model, it is determined that the high-voltage DC power supply cabinet has a failure risk.
  • Method 2 The joint points on the high-voltage DC power supply cabinet are grouped. When the equipment is operating normally, the temperature values of the joint points in the same group are basically close, and the diagnostic model is the same. The abnormal joint points are determined by comparing and analyzing the temperature data of the joint points in the same group.
  • the joints at the same position of each rectifier in a high-voltage DC power supply cabinet can be divided into a group, and the real-time temperature values are T1, T2, T3...Tn.
  • the load conditions of each rectifier are consistent, and the temperature values are theoretically consistent, that is, T1 ⁇ T2 ⁇ T3 ⁇ ... ⁇ Tn. If the temperature value T1 of a certain joint position of a rectifier is found to be the average of the temperature values of other rectifiers, If the phase difference is too large, it means that there is a fault at the corresponding overlap point of the rectifier.
  • T0 represents the real-time temperature value of the joint at position M
  • T1 represents the theoretical temperature value of the joint at position M in the absence of a fault, which is calculated by substituting a real-time electrical parameter value into the corresponding diagnostic model
  • T2 represents the average value of the real-time temperature values of other joints in the same group at position M;
  • the intelligent protection unit after receiving the alarm information and risk point location number sent by the fault diagnosis unit, the intelligent protection unit will immediately prompt the operation and maintenance personnel to check and maintain the abnormal temperature location. For the predicted results of the first and second level malignant fault risk points (equivalent to the second level fault and third level fault of the present disclosure), the intelligent protection unit will also automatically adjust the working state of the equipment according to the risk point location to perform intelligent protection on the equipment.
  • the function of the intelligent protection unit to automatically adjust the device can be set to on or off. After it is turned on, the intelligent protection unit will automatically adjust the operating status of the high-voltage DC power supply cabinet to avoid risks;
  • connection points of the high-voltage DC power supply cabinet by area.
  • Figure 4 is a typical configuration block diagram of the high-voltage DC power supply cabinet according to the embodiment of the present disclosure.
  • connection point areas There are eight connection point areas, namely A, B, C, D, E, F, G, and H.
  • the intelligent protection strategy of the connection points in the same area is the same.
  • the connection points in area A are mainly the connection points of the power supply line from the mains input to the ATS (automatic transfer switch) or circuit breaker;
  • connection points in area B are the connection points of the AC output busbar power supply line.
  • connection points in the C area are the connection points of the power supply lines from the AC busbar to each rectifier circuit breaker;
  • the connection points in the D area are the connection points of the power supply lines from the rectifier circuit breaker to the rectifier input terminals;
  • the connection points in the E area are the connection points of the power supply lines from each rectifier output terminal to the DC busbar;
  • the connection points in the F area are the connection points of the power supply lines from the DC busbar to the load circuit breaker and the battery circuit breaker;
  • connection points in the G area are the connection points of the power supply lines from the battery circuit breaker to the battery;
  • the connection points in the H area are the connection points of the power supply lines from the load circuit breaker to the load;
  • the intelligent protection unit When the intelligent protection unit receives the first-level and second-level malignant fault risk point alarms and risk point location numbers issued by the fault diagnosis unit, it will match the risk point location numbers to the above eight areas, and then start the corresponding protection measures according to the intelligent protection strategies of the corresponding areas;
  • the strategy of intelligent protection is mainly to share the current carrying capacity of the faulty position by adjusting the working state of the fault-free position of the high-voltage DC equipment, thereby reducing the temperature of the fault point and reducing the risk; there are generally two ways of adjustment.
  • the first is to control the rectifier output through the communication bus to adjust the voltage, current, working state, etc.
  • the other is to adjust by controlling the disconnection of the circuit breaker corresponding to the joint position; for the first-level malignant fault risk point, it is mainly adjusted by reducing the current carrying capacity of the position, thereby reducing the temperature of the joint point; for the second-level malignant fault risk point, because the temperature exceeds the standard too much and the risk level is high, it is adjusted by disconnecting the power supply line at the position to play the role of isolating the fault;
  • the failure risk of high-voltage DC power supply cabinet equipment is effectively identified by means of temperature warning, and the risk is nipped in the bud.
  • it is equipped with an intelligent protection function, which automatically takes measures to protect the equipment when the risk is high, preventing the spread of failures due to untimely manual response, and effectively solving the problem of malicious failures, thereby improving the reliability of high-voltage DC equipment.
  • a device for adjusting the working state of a power supply device is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions thereof have been made without further explanation.
  • the term "module” may implement a predetermined Combination of functional software and/or hardware: Although the apparatus described in the following embodiments is preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.
  • FIG5 is a structural block diagram of a device for adjusting the working state of a power supply device according to an embodiment of the present disclosure. As shown in FIG5 , the device includes:
  • the acquisition module 52 is configured to acquire parameter information of a first bonding point of the power supply device, wherein the parameter information includes: electrical parameters and a first temperature;
  • a determination module 54 configured to determine the fault prediction information of the first joint point according to the parameter information
  • the adjustment module 56 is configured to adjust the working state of the power supply device according to the fault prediction information when the fault prediction information indicates that the first bonding point has a fault.
  • the parameter information of the first connection point of the power supply device is obtained, wherein the parameter information includes: electrical parameters, first temperature; the fault prediction information of the first connection point is determined according to the parameter information; when the fault prediction information indicates that the first connection point has a fault, the working state of the power supply device is adjusted according to the fault prediction information.
  • the determination module includes: a first determination module, determining the second temperature corresponding to each electrical parameter, and determining the temperature difference between the first temperature and each second temperature; determining the fault prediction information of the first joint according to the temperature difference between the first temperature and each second temperature.
  • the first determination module is further configured to determine a parameter value corresponding to each electrical parameter, and to determine a square value of each parameter value; and to determine the second temperature based on the parameter value, a first weight corresponding to the parameter value, the square value, and a second weight corresponding to the square value.
  • the first determination module is further configured to determine that a primary fault exists at the first joint when a temperature difference between the first temperature and any second temperature is greater than a first preset threshold and less than a second preset threshold;
  • the first joint has a second-level fault
  • the temperature difference between the first temperature and any second temperature is greater than or equal to the third preset threshold
  • it is determined that the first joint has a third-level fault wherein the risk levels indicated by the first-level fault, the second-level fault, and the third-level fault are different.
  • the determination module also includes: a second determination module, determining the group corresponding to the first joint point, wherein the types of equipment units corresponding to the joint points in the same group are consistent; determining the average temperature of the second joint point in the group, and determining the temperature difference between the first temperature and the average temperature, wherein the second joint point is the other joint point in the group except the first joint point; determining the fault prediction information of the first joint point based on the temperature difference between the first temperature and the average temperature.
  • the second determination module is further configured to determine that the first joint has a primary fault when the temperature difference between the first temperature and the average temperature is greater than a first preset threshold and less than a second preset threshold; to determine that the first joint has a secondary fault when the temperature difference between the first temperature and the average temperature is greater than or equal to a second preset threshold and less than a third preset threshold; and to determine that the first joint has a tertiary fault when the temperature difference between the first temperature and the average temperature is greater than or equal to a third preset threshold, wherein the risk levels indicated by the primary fault, the secondary fault, and the tertiary fault are different.
  • the adjustment module includes: a control module, which controls the alarm module of the power supply device to issue an alarm message when the fault prediction information indicates that the first joint has a primary fault; a third determination module, which determines the location area of the first joint when the fault prediction information indicates that the first joint has a secondary fault or a tertiary fault; and adjusts the working state of the power supply device according to the location area and the fault prediction information.
  • the third determination module is further configured to: when the first tapping point is located in the first area, the third area, or the seventh area, and the fault prediction information indicates that there is a secondary fault at the first tapping point, prohibit the first load device from being powered by the rectifier of the power supply device, and control the first load device to be powered by the DC power supply unit, wherein the first area is a power supply line from the AC power supply unit of the power supply device to the circuit breaker connected to the AC power supply unit, the third area is a power supply line from the monitoring unit of the power supply device to the AC busbar of the power supply device, and the seventh area is The area corresponding to the power supply line from the DC busbar to the load circuit breaker and from the DC busbar to the battery circuit breaker of the power supply device, the load circuit breaker is a circuit breaker connected to the load device corresponding to the power supply device, and the battery circuit breaker is a circuit breaker connected to the DC power supply unit; when the first tapping point is located in the first area, the third area, and the fault prediction
  • the third determination module is further configured to: when the first tapping point is located in the second area and the fault prediction information indicates that there is a secondary fault at the first tapping point, control the automatic transfer switch of the power supply device to disconnect the connection with the mains power unit with risk, and establish a connection with the mains power unit without risk, wherein the second area is the power supply line from the AC power unit of the power supply device to the automatic transfer switch connected to the AC power unit, and the AC power unit includes: the mains power unit with risk and the mains power unit without risk; when the first tapping point is located in the second area and the fault prediction information indicates that there is a tertiary fault at the first tapping point, control the automatic transfer switch of the power supply device to disconnect the connection with the mains power unit with risk, and establish a connection with the mains power unit without risk.
  • the third determination module is further configured to: when the first connection point is located in a fourth area, a fifth area, or a sixth area, and the fault prediction information indicates that the first connection point has a secondary fault, prohibit the rectifier corresponding to the first connection point from supplying power to the third load device, and supply power to the third load device through other rectifiers of the power supply device, wherein the fourth area is a power supply line from the AC busbar of the power supply device to the rectifier circuit breaker of the power supply device, the fifth area is a power supply line from the rectifier circuit breaker to the rectifier of the power supply device, and the sixth area is a power supply line from the rectifier to the DC busbar of the power supply device, and the rectifier circuit breaker is a circuit breaker connected to the rectifier; when the first connection point is located in the fourth area, the fifth area, or the sixth area, and the fault prediction information indicates that the first connection point has a third fault, control the rectifier circuit breaker corresponding to the first connection point to disconnect, and
  • the third determination module is further configured to: when the first connection point is located in an eighth area and the fault prediction information indicates that there is a secondary fault at the first connection point, prohibit the DC power supply unit corresponding to the first connection point from supplying power to the fourth load device, and control the rectifier of the power supply device to supply power to the fourth load device, wherein the eighth area is the battery circuit breaker corresponding to the DC power supply unit to the DC power supply. power supply line between units; when the first tapping point is located in the eighth area and the fault prediction information indicates that there is a third-level fault at the first tapping point, control the battery circuit breaker to disconnect, and control the load device corresponding to the DC power supply unit to supply power.
  • the third determination module is further configured to: when the first tapping point is located in the ninth area and the fault prediction information indicates that the first tapping point has a secondary fault, control the load circuit breaker corresponding to the first tapping point to be disconnected, and control the fifth load device corresponding to the load circuit breaker to be powered by a DC power supply unit, wherein the ninth area is a power supply line between the load circuit breaker and the load device corresponding to the load circuit breaker; when the first tapping point is located in the ninth area and the fault prediction information indicates that the first tapping point has a tertiary fault, control the load circuit breaker corresponding to the first tapping point to be disconnected, and control the fifth load device corresponding to the load circuit breaker to be powered by a DC power supply unit.
  • the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.
  • An embodiment of the present disclosure further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.
  • the above-mentioned computer-readable storage medium may include, but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.
  • An embodiment of the present disclosure further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.
  • the electronic device may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
  • modules or steps of the present disclosure can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation.
  • the present disclosure is not limited to any specific combination of hardware and software.

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Abstract

L'invention concerne un procédé et dispositif permettant de régler l'état de fonctionnement d'un appareil d'alimentation électrique, et un dispositif électronique. Le procédé comprend les étapes consistant à : acquérir des informations de paramètres d'un premier point de connexion d'un appareil d'alimentation électrique, les informations de paramètres comprenant des paramètres électriques et une première température (S202) ; déterminer des informations de prédiction de défaut du premier point de connexion sur la base des informations de paramètres (S204) ; et lorsque les informations de prédiction de défaut indiquent l'apparition d'un défaut au niveau du premier point de connexion, régler l'état de fonctionnement de l'appareil d'alimentation électrique sur la base des informations de prédiction de défaut (S206). La présente invention résout le problème de l'état de la technique selon lequel un appareil d'alimentation électrique est uniquement équipé d'un système d'alarme se déclenchant après la survenue d'un événement majeur causé par un défaut et ne peut pas éviter des événements majeurs.
PCT/CN2024/100766 2023-06-27 2024-06-21 Procédé et dispositif permettant de régler l'état de fonctionnement d'un appareil d'alimentation électrique, et dispositif électronique Ceased WO2025002012A1 (fr)

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