CN103166312A - Low voltage long distance intelligent residential district motive power prepayment device - Google Patents

Abstract

The invention relates to an intelligent control device for remote meter reading and remote prepayment for low-voltage small power users, including an intelligent terminal control device with a GPRS communication function. The intelligent terminal control device with a GPRS communication function is connected to several user terminals respectively. Including wireless controller, contactor, signal indicating device, instrument device and isolating switch. The wireless controller corresponds to the intelligent terminal control equipment with GPRS communication function. The wireless controller is respectively connected with the contactor, signal indicating device and instrument device. The isolation switch is connected with the instrument device and the wireless controller respectively. The invention has the functions of real-time meter reading, prepayment, remote control, real-time monitoring and alarming.

Description

Low-voltage remote intelligent community power prepayment device

technical field

The invention relates to an intelligent control device for remote meter reading and remote prepayment for low-voltage small power users. the

Background technique

At present, there are two situations for low-voltage small power users' electricity management and control devices. the

One is a manual meter reading and manual on-site control device. The device reads the electricity indications manually on the spot every month, and then calculates the electricity bills incurred by the user last month based on the indications. When the user is in arrears of electricity bills, the meter reading personnel need to call or issue an arrears notice to notify the user to pay the fee in time. If the user still cannot pay the fee on time, the meter reading personnel must go to the site to manually cut off the power. After the user pays the electricity fee, the meter reader needs to go to the scene to send electricity manually. This method has cumbersome work process, waste of human resources, low work efficiency and easy to cause electricity bill arrears. The main components used in the device are box body, electric energy meter and load switch. the

Another way is manual meter reading, IC card mode prepaid automatic control device. The device requires the user to pre-pay the electricity fee at the power supply business hall, and charge the pre-purchased electricity into the IC card, and then take the card to the scene to charge the pre-purchased electricity into the control device. As the user's electricity consumption increases, the pre-purchased electricity will gradually decrease. When the remaining power is not much, the user can hold the card again in advance to the power supply business hall to pre-purchase the power, and charge it to the control device in time. If the user fails to purchase electricity or recharge in time, when the remaining electricity is used up, the control device will issue a trip command to trip. The actual settlement of the user's electricity bill by the power supply company still depends on the meter reading personnel to go to the scene to read the meter every month. The main components used in the device include a box body, an electric energy meter, a contactor, a controller with an IC card reader, and a load switch.

Disadvantages of this method:

1. Meter reading personnel still need to go to the site to read the meter every month.

2. Users need to hold the card to the business hall to pre-purchase electricity, and the card is easy to lose. the

3. The card reader is easily damaged, resulting in failure to recharge due to failure to read or recognize the card. the

4. The user's electricity consumption cannot be monitored in real time. the

Contents of the invention

Because the existing technology cannot fundamentally solve the problem of manual meter reading, it cannot effectively implement prepayment, it cannot monitor the user's electricity consumption in real time, the degree of automation is not high, the reliability and stability of the system equipment are poor, and the anti-theft function is poor. Existence, so it is necessary to upgrade the existing technical conditions, completely solve the manual meter reading, truly realize prepayment, effectively eliminate the arrears of electricity charges, improve the automation level, prevent electricity theft, and improve the reliability and stability of system equipment. The invention provides A low-voltage remote intelligent community power prepayment device. the

The present invention will take the micro-intelligent controller as the core, use the CJ20S AC contactor as the control means, use the signal indicator light as the information transmission, and use the TM-K1 intelligent meter box control device to manage the occurrence of electricity theft. means, comprehensive intelligent control device. the

Microcontroller is an intelligent terminal control device with GPRS communication function. It has real-time meter reading function, prepayment function, remote control function, real-time monitoring function, and payment reminder and alarm function. the

CJ20S AC contactor is an AC contactor with electronic locking function, and it has two control coils for tripping and closing. When the pull-in coil is energized, the iron core is attracted and locked, the main circuit is closed and put into operation, and the coil is released instantaneously; when the main circuit is disconnected, the lock control device is connected, the contactor is released, and the main circuit is disconnected. During the working process, the control circuit of the contactor does not consume electric energy, so it is called a full energy-saving non-voltage AC contactor. This device plays the role of opening and closing the main circuit in the present invention. the

The control button plays the role of closing the main circuit in the present invention, and it and the controller respectively act on the closing coil and the tripping coil of the AC contactor, thereby realizing closing and disconnecting of the main circuit. the

Signal indicator lights play a role in information transmission in the present invention, and it is divided into operation indicator lights, trip indicator lights, alarm indicator lights, and switch-on indicator lights allowed. When the running indicator light is on, it means that the main circuit is running normally. When the running indicator light is off, it means that the main circuit has been disconnected or the line is out of power; when the alarm indicator light is on, it means that the remaining power of the user has reached the alarm threshold, and the user is notified to go to the business hall to prepay the electricity fee as soon as possible. When the user's remaining power is greater than the alarm threshold, the indicator light is off; when the trip indicator is on, it means that the user's remaining power has been used up, the contactor has tripped, and the main circuit has been disconnected. When the contactor is closed and the main circuit is running, the indicator light is off; when the closing indicator light is on, it means that the user can close the switch through the control button. If the light is not on, the switch cannot be closed by pressing the control button. the

The TM-K1 type control device is assembled in a metering box with a shunt or pressure coil circuit breaker. When the door of the metering box is opened illegally, the control device will work with power on, and the circuit breaker will trip within a few seconds, and cannot be restored by itself. The power supply can only be resumed after the electronic key is decoded by the electrician, so as to prevent the user from opening the door of the metering box privately to steal electricity. behavior occurs. the

Adopting the above technical solution, the present invention has the following advantages: after the user purchases electricity through the power supply business hall, the staff can send the purchased electricity to the controller at any time through the GPRS network, instead of using the IC card to pay and recharge. When it is necessary to read the electricity indication on the monthly meter reading day, the meter reader can read the electricity indication in real time through the system master station and the GPRS network, which can save the meter reader from reading the electricity meter on site. When the user's remaining power reaches the alarm threshold, the controller will send out an alarm command, causing the signal indicating device to issue an audible and visual alarm, and promptly notify the user to prepay the electricity fee. At the same time, the main station of the system will also send a short message to the user in time according to the remaining power reported by the controller to inform the user of the remaining power, which can save the meter reader from going to the site to issue a power generation fee notice. When the user's remaining power is used up, the controller will issue a trip command, and the contactor will trip and cut off the power after receiving the command, so as to prevent the user from defaulting on electricity bills. When the user cuts off the power due to running out of power, the user cannot send electricity by himself without prepayment. After the user pays the electricity fee in advance and sends it out, the user can activate the button to transmit electricity, so that the management personnel no longer need to go to the site to stop the power transmission function. the

When the door of the metering box is opened illegally, the electronic lock will issue a power-off command and lock itself, and the user cannot recover by himself. The power supply can only be resumed after the administrator holds the electronic key to decode it, so as to prevent the user from opening the metering box door privately. The occurrence of electricity theft. the

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention. the

Fig. 2 is a schematic diagram of the through-type structure of the user terminal in the present invention. the

Fig. 3 is a shell diagram of the through-type user terminal of the present invention. the

Fig. 4 is a wiring diagram of the through-type primary line at the user end of the present invention. the

Fig. 5 is a schematic diagram of the structure of mutual inductance at the user end of the present invention. the

FIG. 6 is a right side view of FIG. 5 . the

Fig. 7 is a wiring diagram of the mutual induction primary line at the user end of the present invention. the

Fig. 8 is a wiring diagram of the mutual-inductance secondary line at the user end of the present invention. the

Fig. 9 is a wiring diagram of the client controller of the present invention. the

Figure 10 is the wiring diagram of the GJ20SG AC contactor. the

Figure 11 is a wiring diagram of the closing control circuit and the permitting closing indicator light. the

Figure 12 is a wiring diagram of the trip control circuit and the trip indicator light. the

Figure 13 is a wiring diagram of the TM-K1 control device. the

、跳闸指示灯  12、报警指示灯  13、运行指示灯  14、TM-K1密匙控制器  15、电能表  16、电能表观察窗  17、门锁  18、指示灯观察窗  19、进线孔  20、接线盒  21、电流互感器  22、出线孔  23、接触器辅助触点  A、黄线   B、绿线   C、红线   N、黑线  1. Cabinet 2, primary wire 3, isolating knife switch 4, wireless controller 5, CJ20S AC contactor 6, zero line plate 7, door control switch 8, molded case circuit breaker 9, control button 10, closing indication allowed lamp

, trip indicator light 12, alarm indicator light 13, operation indicator light 14, TM-K1 key controller 15, electric energy meter 16, electric energy meter observation window 17, door lock 18, indicator light observation window 19, wire inlet hole 20, Junction box 21, current transformer 22, outlet hole 23, contactor auxiliary contact A, yellow line B, green line C, red line N, black line

TM-K1 type control device wiring diagram: a pair of red wires connected to 220V, no direction, a green wire connected to the trip coil of the AC contactor, no direction, a pair of yellow wires connected to the micro door control switch, and the door is shorted.

Detailed ways

1. Wiring method of UC-3000C (straight-through) primary line

Use yellow, green, red, and black four 16m2 multi-strand copper wires (2) to enter the box (1) through the wire inlet hole (19), and the yellow, green, and red phase wires are connected to the isolation switch (3) The upper pole of the isolation switch (3), the lower pole of the isolation switch (3) is connected to the incoming line terminal of the electric energy meter (15), the outgoing line terminal of the electric energy meter (15) is connected to the upper pole of the AC contactor (5), and the AC contactor (5) ) is connected to the upper pole of the molded case circuit breaker (8), and the lower pole of the molded case circuit breaker (8) is connected to the user side through the outlet hole (22). The black neutral wire is connected to the neutral wire copper plate (6), and then connected to the user side through the outlet hole (22). The neutral wire terminal of the electric energy meter (15) is connected with the neutral wire copper plate (6).

2. Wiring method of UC-3000B (mutual inductance) primary line

Use yellow, green, red, and black four 16m2 multi-strand copper wires (2) to enter the box (1) through the wire inlet hole (19), and the yellow, green, and red phase wires are connected to the isolation switch (3) The upper pole of the isolation switch (3) is connected to the upper pole of the AC contactor (5), and the lower pole of the AC contactor (5) is connected to the molded case circuit breaker through the center hole of the current transformer (21). (8) is connected to the upper pole, and the lower pole of the molded case circuit breaker (8) is connected to the user side through the outlet hole (22). The black neutral wire is connected to the neutral wire copper plate (6), and then connected to the user side through the outlet hole (22).

Claims (6)

1. low-voltage remote intelligent residential district power prepaid devices, it is characterized in that: the intelligent terminal control appliance that comprises the GPRS communication function, the intelligent terminal control appliance of GPRS communication function is connected with several user sides respectively, has real-time meter-reading function, pre paid functionality, remote control function, real-time monitoring and control, the alert function of interpellation, user side comprises wireless controller, contactor, signal indicating device, metering device and isolation switch, wireless controller is corresponding with the intelligent terminal control appliance of GPRS communication function, wireless controller respectively with contactor, signal indicating device is connected with metering device, isolation switch is connected with wireless controller with metering device respectively.

2. low-voltage remote according to claim 1 intelligent residential district power prepaid devices is characterized in that: described signalling comprises and allows combined floodgate indicator light, tripping operation indicator light, alarm lamp, run indicator, is connected with wireless controller respectively.

3. low-voltage remote according to claim 1 and 2 intelligent residential district power prepaid devices, it is characterized in that: also comprise TM-K1 type Intelligent meter box control device, the Intelligent meter box control device comprises the control of secret key device, and the control of secret key device is connected with wireless controller, the control of secret key management electricity filching behavior.

4. low-voltage remote according to claim 3 intelligent residential district power prepaid devices, is characterized in that: the breaker of plastic casing that also connects on contactor.

5. low-voltage remote according to claim 4 intelligent residential district power prepaid devices, it is characterized in that: described contactor is CJ20S type A.C. contactor.

6. low-voltage remote according to claim 4 intelligent residential district power prepaid devices, is characterized in that: also be connected with instrument transformer on described contactor.

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