CN106652425A - Meter reading courts electricity information comprehensive general survey instrument - Google Patents

Abstract

The invention discloses a comprehensive survey instrument for electricity consumption information in a meter reading station area, which belongs to the field of power system supervision and includes a data concentrator, a data collection and processing unit, an on-site status monitoring and display unit; the data concentrator and data processing The units are respectively connected and communicated with the corresponding communication ports of the electric energy meter of the low-voltage user; the data processing unit includes a central processing unit, an input and output unit, a low-voltage carrier module and a wireless communication unit; Through 285, 485 or network port communication, the central processor communicates with the electric energy meter of the low-voltage user through the low-voltage carrier module; the video signal output end of the central processor is connected to the on-site status monitoring and display unit; the central The processor is provided with a local upload interface and a wireless communication unit; the invention has the advantages of convenient installation and use, fast and accurate monitoring and high safety.

Description

A comprehensive census instrument for electricity consumption information in the meter reading station area

technical field

The invention relates to a comprehensive survey instrument for electricity consumption information in a meter reading station area, which belongs to the field of power system supervision.

Background technique

It turns out that sorting out the user files in the meter reading station area has always been time-consuming and laborious. The traditional way of sorting out the meter reading station area is for the meter reader to go door-to-door to check and sort out the site. It is difficult to check the low-voltage user files in the cable station area using traditional manual methods. The correctness of the files, the traditional way of sorting out files has a large workload, high labor intensity, and low work efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to provide a comprehensive census instrument for electricity consumption information in the meter reading station area which is easy to install and use, fast and accurate in monitoring, and high in safety.

The present invention adopts following technical scheme:

A comprehensive census instrument for electricity consumption information in a meter reading station area, which includes a data concentrator, a data acquisition and processing unit, an on-site status monitoring and a display unit; the data concentrator and the data processing unit communicate with the electric energy meters of low-voltage users respectively port connection communication;

The data processing unit includes a central processing unit, an input and output unit, a low-voltage carrier module and a wireless communication unit; The low-voltage carrier module communicates with the electric energy meter of the low-voltage user through the low-voltage carrier; the video signal output end of the central processor is connected to the on-site status monitoring and display unit; the central processor is provided with a local upload interface and a wireless communication unit.

Further, the low-voltage carrier module includes a carrier chip and a power line interface circuit; the electric energy meter of the low-voltage user is connected to the central processing unit through the power line interface circuit via the carrier chip.

Further, the model of the carrier chip is ST7538 half-duplex, synchronous/asynchronous FM modem chip.

The beneficial effects of the present invention are as follows:

The present invention utilizes the existing data concentrator in the station area as a transmission intermediary, and at the same time has low-voltage carrier communication capabilities, realizes all monitoring and management of low-voltage user electricity information, greatly improves accuracy and work efficiency, and can transmit data in the shortest time The situation that there are meters but no households, households without meters, and users who belong to station A area are wrongly connected to station B area will be quickly detected.

Description of drawings

Fig. 1 is a structural principle block diagram of the present invention.

detailed description

The present invention will be further described below in conjunction with FIG. 1 and specific embodiments.

As shown in Figure 1, the present embodiment relates to a comprehensive survey instrument for electricity consumption information in a meter reading station area, which includes a data concentrator, a data acquisition processing unit, an on-site status monitoring and a display unit; the data concentrator and a data processing unit Connect and communicate with the corresponding communication port of the electric energy meter of the low-voltage user respectively;

The data processing unit includes a central processing unit, an input and output unit, a low-voltage carrier module and a wireless communication unit; The low-voltage carrier module communicates with the electric energy meter of the low-voltage user through the low-voltage carrier; the video signal output end of the central processor is connected to the on-site status monitoring and display unit; the central processor is provided with a local upload interface and a wireless communication unit.

Further, the low-voltage carrier module includes a carrier chip and a power line interface circuit; the electric energy meter of the low-voltage user is connected to the central processing unit through the power line interface circuit via the carrier chip.

Further, the model of the carrier chip is ST7538 half-duplex, synchronous/asynchronous FM modem chip.

This embodiment combines the low-voltage data acquisition and transmission technology and communication commonly used in power systems, and the principle of combining low-voltage data concentrators with low-voltage carrier communication technology. The single-phase smart meter with carrier communication capability can also be an ordinary 485 smart communication meter, as long as it has a communication link, the smart meter communicates with the low-voltage data concentrator through low-voltage carrier or 485 communication methods, and the data concentrator The function is to collect the data of the electric meter of the low-voltage user. The communication method can be low-voltage carrier communication and 485 communication. The combination of various devices in this embodiment can quickly and accurately collect the data of the low-voltage user, including the electricity consumption information of the low-voltage user , The real-time voltage of the user's electricity consumption, the current of the live line, the current of the neutral line, the historical record of opening the cover, the historical power-off information, power factor, etc.

The data acquisition and processing unit not only has the function of communicating with the data concentrator, but also has the function of communicating with the low-voltage user meter, and can obtain some commands and data not supported by the low-voltage data concentrator, and it is also more convenient in the process of use .

The on-site status monitoring and display unit can use various displays for displaying statistics on low-voltage data collection and setting some corresponding communication parameters.

This embodiment has local uploading and wireless uploading functions, and users can use it reasonably according to actual conditions. Local uploading is realized through a local uploading interface, and wireless uploading is realized through a wireless communication unit. The model of the wireless communication unit can be selected as HM-TRLR-S. Ultra-small size, surface-mount design, easy to embed, LoRa technology spread spectrum transmission, long communication distance, strong anti-interference, support multiple modulation modes, convenient for networking.

Working process and principle of the present invention are as follows:

First, connect the data collection and processing unit in this embodiment to the data concentrator to obtain the account management information of the current station area in the data concentrator, and compare it with the data in the SG186 system to standardize the information in the data concentrator.

Secondly, the data acquisition and processing unit controls the data concentrator to transparently transmit data to obtain information such as the power of the low-voltage user meter, real-time voltage, live wire current, neutral wire current, historical cover opening records, historical power-on and power-off information, and power factors.

Finally, the data acquired by the data acquisition and processing unit is imported into the background computer equipped with analysis software, and the suspected power-stealing users in the current station area are obtained through the comparison of the current of the live line and the current of the neutral line, long-term monitoring of zero-degree users, and records of opening the cover. At the same time, it is compared with the data in the SG186 system to obtain the data of households with meters and no households and data of households without meters in the current station area. At the same time, compared with the data in the SG186 system of the connected station area, it is obtained that the user meter is mixed. Misloaded data.

The invention obtains the information of all smart meters under the current station area through the concentrator, and forms the low-voltage user smart meter files under the actual station area on site. It can compare the low-voltage user energy meter file information in the instrument with the low-voltage user file in the marketing application system to find out the difference, and realize the verification of the smart meter file and the on-site file in the station area. Obtain the voltage and current data of the smart meters of each low-voltage user, and after a certain period of collection and analysis, the user's load curve can be obtained. Obtain the voltage and current data of the general meter in the station area, compare with the obtained user electricity consumption data, analyze the difference between the two, and find out the situation of electricity theft or wrong installation of the meter. Obtain the cover-opening records of low-voltage user ammeters, save and analyze them. By viewing and analyzing the cover-opening records, it can be concluded whether there is any behavior such as stealing electricity. Obtain the live wire and neutral wire current of the low-voltage user meter, and draw conclusions. Inconsistent data or user data with zero long-term current are output in the form of documents, and the electricity theft conclusion is drawn after analysis.

In addition, the present invention also realizes the automatic search, automatic acquisition, and automatic archiving of the low-voltage smart meter in the station area, and compares it with the data information in the SG186 system to realize the verification of the user files of the low-voltage smart meter, and realize the verification of the smart meter users of the marketing system. Sorting out electricity consumption information and clearing up wrong files at the beginning of the inspection (with meters but no households, households without meters, and user files linked to the wrong station area). It has changed the previous 1-to-1 to 1-to-N method of station account verification and electricity theft investigation. It has completely changed the original tactical mode of spreading the net widely and checking one by one, and changed it to the method of using power line carrier waves through instruments to achieve centralized verification in batches, saving a lot of manpower and material resources. At the same time, the three functions of user smart meter voltage, current, and load curve comparison monitoring, and batch checking of electricity theft are realized. The three functions can provide data support and verification for each other. Simple and convenient to use, on-site inspection and on-site analysis can be used to accurately locate and investigate electricity stealing users on the spot.

Especially because the smart meter information under the station area is collected through the carrier platform of the data concentrator, the present invention can access the entire station area at one time at any point in the station area, avoiding opening the meter box multiple times, Greatly reducing the number of times of contact with electrical equipment, taking insulation measures as required during on-site operation, can greatly reduce the risk of electric shock, and then prevent electric shock accidents caused by connecting to testing instruments for testing.

The present invention is applicable to all users of intelligent metering in low-voltage station areas. When using it, the power supply must be complete. In the case of using a low-voltage data concentrator as data forwarding, the data collection and processing unit should be connected with the data concentrator to obtain the data of low-voltage users. Data, without using the data concentrator as data forwarding, use the data concentrator to obtain the table information of users in the low-voltage station area, and can also obtain low-voltage data according to different functional requirements.

The invention is compatible with data concentrators of different manufacturers and models. The test unit can link the original data concentrator to the data acquisition and processing unit module without purchasing new instruments, and can complete a series of on-site data collection and processing. The cost is greatly reduced. Because the original test equipment can be used, the accuracy of the longitudinal analysis results between the current test data and the historical test data is ensured. In the power stealing mode, if a user is detected to have a power stealing behavior, it will be charged and punished. And other measures, the economic benefits are particularly considerable.

Now the installation is all in the low-voltage test, which is simple, convenient, and safe. The device directly calls the real-time data of the user's meter. The accuracy of the data is high and the positioning is precise. The data is imported into the background software for analysis through the local device and cannot be modified by bad users. It is extremely safe. high.

Claims (3)

1. A comprehensive census instrument for electricity consumption information in a meter reading station area, characterized in that: it comprises a data concentrator, a data acquisition processing unit, on-site status monitoring and a display unit; The corresponding communication port of the electric energy meter is connected to the communication; The data processing unit includes a central processing unit, an input and output unit, a low-voltage carrier module and a wireless communication unit; The low-voltage carrier module communicates with the electric energy meter of the low-voltage user through the low-voltage carrier; the video signal output end of the central processor is connected to the on-site status monitoring and display unit; the central processor is provided with a local upload interface and a wireless communication unit. 2. a kind of comprehensive census instrument for electricity consumption information in meter reading station area according to claim 1, is characterized in that: described low voltage carrier module comprises carrier chip and power line interface circuit; The electric energy meter of described low voltage user passes through power line interface circuit The central processing unit is connected via a carrier chip. 3. A comprehensive census instrument for electricity consumption information in meter reading station area according to claim 2, characterized in that: the model of the carrier chip is ST7538 half-duplex, synchronous/asynchronous FM modulation and demodulation chip.