CN201839081U - Intelligent power supply control device for box type transformer - Google Patents

Abstract

The utility model relates to a box-type transformer power supply intelligent control device, which includes a signal data acquisition circuit, a signal data calculation and judgment circuit, an equipment operation circuit, a control and an alarm communication circuit; the signal data acquisition circuit is collected from the box-type transformer power supply equipment Signal data, the output terminal is connected to the signal data calculation and judgment circuit, the control and alarm communication circuit, the output of the signal data calculation and judgment circuit is connected to the device operation circuit, the control and alarm communication circuit, and the control and alarm communication circuit is connected to the intelligent control of the distribution network center or electrician’s mobile phone; the utility model utilizes computer technology, monitoring technology, control technology and communication technology to develop a real-time status, data detection, protection, and remote control system for box-type transformers, load switches, and 400V power distribution systems , Play a positive role in promoting the development of intelligent power distribution.

Description

Box-type transformer power supply intelligent control device

technical field

The invention relates to an intelligent control technology for power supply of a box-type transformer, specifically, an intelligent control device for power supply using a 10kV box-type transformer. the

Background technique

At present, the power system is fully developing smart grid construction, implementing intelligent control, intelligent management, and intelligent analysis of the entire grid. The intelligentization of distribution network has only just started, and it has not been fully popularized and applied due to various reasons. The research on intelligent control technology for power supply of box-type transformers is also part of the popularization and application of intelligent distribution network, mainly for distribution transformers, load switches, The 400V power distribution system and below implement intelligent control, intelligent management, and intelligent analysis. the

The research and construction of box-type transformer power supply intelligent control technology will greatly promote the safe and economical operation of power distribution system equipment. Currently, the distribution transformers, load switches, and 400V power distribution systems in operation cannot be monitored in real time. If there is a fault in the upper part, the user will notify the maintenance; the power supply quality is low, and the equipment damage rate is high. If the intelligent control technology of box-type transformer power supply can be fully promoted and applied, it will play a vital role in the development of intelligent technology in power distribution systems. the

Contents of the invention

The purpose of the present invention is achieved through the following technical solutions: a box-type transformer power supply intelligent control device, including signal data acquisition circuit, signal data calculation and judgment circuit, equipment operation circuit, control, alarm communication circuit; wherein, the The signal data acquisition circuit collects signal data from the box-type transformer power supply equipment, the output terminal is connected to the signal data calculation and judgment circuit, the control and alarm communication circuit, the output of the signal data calculation and judgment circuit is connected to the equipment operation circuit, the control, Alarm communication circuit, output of control and alarm communication circuit is connected to distribution network intelligent control center or mobile phone of electrician on duty;

The signal data acquisition circuit includes a high-voltage switch position signal acquisition circuit, a low-voltage switch position signal acquisition circuit, a transformer temperature signal acquisition circuit, a cable temperature signal acquisition circuit, a low-voltage voltage signal acquisition circuit, a low-voltage current signal acquisition circuit, and a high-voltage current signal acquisition circuit. circuit, power factor signal acquisition circuit, zero line current signal acquisition circuit, phase line grounding signal acquisition circuit, neutral line disconnection signal acquisition circuit, harmonic signal acquisition circuit; wherein the high voltage switch position signal acquisition circuit is obtained from the high voltage The position signal is collected at the auxiliary contact of the electric operating mechanism of the switch, and connected to the control and alarm communication circuit; the position signal acquisition circuit of the low-voltage switch collects the position signal from the auxiliary contact of the electric operating mechanism of the low-voltage switch, and is connected to the control and alarm communication circuit; The transformer temperature signal acquisition circuit is to collect the temperature data signal from the transformer temperature sensor, which is connected to the signal data calculation and judgment circuit, control and alarm communication circuit; the cable temperature signal acquisition circuit is to connect the temperature sensor to the cable At a certain position of the head, the cable temperature data signal is collected from the temperature detection element, and connected to the signal data calculation and judgment circuit, control and alarm communication circuit; Output a suitable voltage signal after being stepped down by a resistance of a certain value, and then connect to the number data calculation and judgment circuit, control and alarm communication circuit; the low-voltage current signal acquisition circuit is to pass the A, B, C three-phase current through the current transformer Output current signal suitable for requirements after conversion with load resistance, access signal data calculation and judgment circuit, control and alarm communication circuit; the high-voltage current signal acquisition circuit is to output the high-voltage one-phase current after the current transformer and load resistance conversion The current signal suitable for the requirements is connected to the signal data calculation and judgment circuit, and the control and alarm communication circuit; the power factor signal acquisition circuit is used to collect active and reactive energy signals from the active energy meter and the reactive energy meter and access the signal data to calculate and judge Circuit, control and alarm communication circuit; the zero-line current signal acquisition circuit outputs a current signal suitable for the requirements from the zero-sequence current transformer twice through a certain load resistance, and connects to the signal data calculation and judgment circuit, and the control and alarm communication circuit; The phase line grounding signal acquisition circuit collects the phase line grounding signal from the residual current protector, and accesses the control and alarm communication circuit; the neutral line disconnection signal acquisition circuit collects the zero line disconnection signal from the zero line disconnection protector The signal is connected to the control and alarm communication circuit; the harmonic signal acquisition circuit collects the harmonic signal from the harmonic detector, and is connected to the signal data calculation and judgment circuit, and the control and alarm communication circuit;

The signal data calculation and judgment circuit includes an A/D conversion circuit, a calculation and judgment circuit, and an actuator; the input of the A/D conversion circuit is connected to the output terminal of the signal data acquisition circuit, and the output of the A/D conversion circuit is connected to The data calculation and judgment circuit, the output of the data calculation and judgment circuit is connected to the actuator; the output of the actuator has two terminals, one terminal is connected to the equipment operation circuit, and the other terminal is connected to the control and alarm communication circuit;

The equipment operating circuit includes the opening and closing control circuit of the high-voltage switch electric mechanism, the opening and closing control circuit of the low-voltage switch electric mechanism, and the control circuit of the automatic switching and switching device of the reactive power compensation equipment; the input signals of the equipment operating circuit are respectively from Signal data calculation and judgment circuit, control and alarm communication circuit output terminals; wherein, the high-voltage switch opening and closing control circuit refers to the operating high-voltage switch motor mechanism opening and closing circuit; the low-voltage switch opening and closing circuit; The closing control circuit refers to the opening and closing circuit of the low-voltage switch motor mechanism; the control circuit of the automatic switching device of the reactive power compensation equipment refers to the control circuit of the automatic switching device of the reactive power compensation equipment. Circuit automatic operation switching circuit. the

It also includes an optical transceiver circuit, and the optical transceiver circuit includes an optical fiber cable, an optical receiving circuit, and an optical transmitting circuit; one end of the optical receiving circuit is connected to an optical fiber cable, and is to receive signals transmitted from the distribution network power supply intelligent control center, and transmit the optical signals It is converted into an electrical signal and transmitted to the box-type transformer power supply intelligent control device; the other end is connected to an optical transmission circuit, and the electrical signal of the box-type transformer power supply intelligent control device is converted into an optical signal and transmitted to the distribution network intelligent control center through an optical fiber cable. the

The control and alarm communication circuit is a wireless communication circuit, and the wireless communication circuit includes a wireless transmitting circuit and a wireless receiving circuit;

The wireless transmission circuit includes a signal input circuit, an encoding circuit, and a transmission circuit; the signal input circuit is connected to the signal data acquisition circuit and the data calculation and judgment circuit; the output of the signal input circuit is connected to the encoding circuit, The encoding circuit is connected to the transmitting circuit; it is to transmit the signal of the box-type transformer intelligent control device to the intelligent control center of the distribution network or the mobile phone of the electrician on duty;

The wireless receiving circuit includes a signal receiving circuit, a decoding circuit, and an execution circuit; the signal receiving circuit is connected to the decoding circuit, the decoding circuit is connected to the execution circuit, and the output of the execution circuit is connected to the power control box; The signal from the network intelligent control center or the mobile phone of the electrician on duty is used to control and inspect the box-type transformer power supply equipment. the

The box-type transformer power supply intelligent control device uses advanced computer technology, monitoring technology, control technology, and communication technology to develop a remote control, real-time status, and data detection intelligence for distribution transformers, load switches, and 400V power distribution systems. Advanced monitoring device. Compared with the prior art, the present invention has outstanding substantive features and remarkable progress. Specifically, the intelligent power supply system has advanced technology, reasonable design, and ideally realizes intelligent power supply control, intelligent management, and intelligent analysis of box-type transformers. The development of automatic control of power grid distribution system will play a positive role in promoting. The specific advantages of the box-type transformer power supply intelligent control device:

1. The intelligent control device monitors the safe and economical operation of the power supply of the box-type transformer at any time. It has a protection function and an automatic device that can automatically switch the transformer and reactive power supply according to the settings. Improve power supply reliability. the

2. The intelligent control device monitors the operating technical data of the power supply equipment of the box-type transformer at any time, and can see the voltage, current, temperature of the transformer and the on-site status of the power supply equipment at any time through telemetry and remote signaling. the

3. The intelligent control device has a remote operation transformer and reactive power supply. If it needs to be switched at any time according to the on-site operation status of the equipment, it can be operated remotely, shortening the operating time of the equipment and reducing unnecessary losses. the

Description of drawings

Fig. 1 is a composition block diagram of box-type transformer power supply intelligent control device of the present invention;

Fig. 2 is a block diagram of signal data acquisition circuit of the present invention;

Fig. 3 is a block diagram of signal data calculation and judgment circuit of the present invention;

Fig. 4 is a block diagram of the device operating circuit of the present invention;

Fig. 5 is a block diagram of optical transceiver circuit of the present invention;

Fig. 6A is a block diagram of the composition of the wireless transmission circuit of the present invention;

Fig. 6B is a block diagram of the wireless receiving circuit of the present invention. the

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figure 1, it is a box-type transformer power supply intelligent control device of the present invention to form a block diagram, the device includes signal data acquisition circuit 1, signal data calculation and judgment circuit 2, equipment operation circuit 3, control, alarm communication circuit 4;

Wherein, the signal data acquisition circuit collects signal data from the box-type transformer intelligent control system, the output terminal is connected to the signal data calculation and judgment circuit, the control and alarm communication circuit, and the output of the signal data calculation and judgment circuit is connected to the equipment operation circuit , a control and alarm communication circuit, the control and alarm communication circuit is connected to the intelligent control center of the distribution network or the mobile phone of the electrician on duty. the

The real-time status and data signals collected from the box-type transformer power supply equipment are respectively transmitted to the data calculation and judgment processing circuit, control and alarm communication circuit, and various signal data are compared by the data calculation and judgment processing circuit to determine the status of the system equipment. When the equipment fails to start protection, the action signal is transmitted to the equipment operation circuit for tripping, and at the same time, the transmission control and alarm communication circuit will alarm the failure of the system equipment. When the status of the system equipment changes, the equipment operation will inform the electrician on duty of the status change of the system equipment. When the system equipment needs to change the state, it can be operated remotely, and the electrician does not need to go to the equipment site. the

Fig. 2 is the block diagram of data signal acquisition circuit of the present invention, and signal data acquisition circuit comprises high voltage switch position signal acquisition circuit 2A, low voltage switch position signal acquisition circuit 2B, transformer temperature signal acquisition circuit 2C, cable temperature signal acquisition circuit 2D, low voltage Signal acquisition circuit 2E, low-voltage current signal acquisition circuit 2F, high-voltage current signal acquisition circuit 2G, power factor signal acquisition circuit 2H, zero line current signal acquisition circuit 2I, phase line grounding signal acquisition circuit 2J, neutral line disconnection signal acquisition circuit 2K , Harmonic signal acquisition circuit 2M;

The high-voltage switch position signal acquisition circuit 2A collects the high-voltage switch position signal from the auxiliary contact of the electric operating mechanism of the high-voltage switch, and is connected to the control and alarm communication circuit; when the system equipment fails, the signal data calculation and judgment circuit sends out protection Tripping signal, when the high-voltage switch is displaced, an alarm signal is sent. the

The low-voltage switch position signal acquisition circuit 2B collects the switch position signal from the auxiliary contact of the electric operating mechanism of the low-voltage switch, and is connected to the control and alarm communication circuit; when the low-voltage system equipment fails, the signal data calculation and judgment circuit sends out protection trip signal, the low-voltage switch shifts, and an alarm signal is sent. the

The transformer temperature signal acquisition circuit 2C collects temperature data from the digital temperature sensor of the transformer temperature detection element, and is connected to the signal data calculation and judgment circuit, control and alarm communication circuit; , send out an alarm signal. the

The cable temperature signal acquisition circuit 2D is to connect the temperature detection element digital temperature sensor to a certain position of the cable head, collect cable temperature data from the temperature detection element, control and alarm communication circuit, and connect to the signal data calculation and judgment circuit ; When the collected temperature data is higher than the specified value through calculation, an alarm signal will be sent. the

The voltage signal acquisition circuit 2E is to output the voltage signal suitable for the requirements after stepping down the three-phase 220V 50Hz alternating current of A, B, and C through a resistance of a certain value, and connect it to the signal data calculation and judgment circuit, control and alarm communication circuit ; When the system parameters change, the computer calculates that there is an overvoltage or undervoltage, and it will send out an overvoltage or undervoltage alarm signal, or a trip signal. the

The low-voltage current signal acquisition circuit 2F is to output the current signal suitable for the requirements of the A, B, and C three-phase currents through the current transformer and the load resistance, output the access signal data calculation and judgment circuit, control and alarm communication circuit; When the system parameters change, the computer calculates the over-current parameter and over-regulates the implantation, and sends out an over-current alarm signal or a trip signal. the

The high-voltage current signal acquisition circuit 2G is to output a current signal suitable for the requirements of the high-voltage one-phase current through the current transformer and the load resistance, and access the signal data calculation and judgment circuit, control and alarm communication circuit; when the system power load changes , the current is calculated by the microcomputer, if there is a fault inside the transformer, the protection action will trip. the

The power factor signal acquisition circuit 2H collects active energy and reactive energy signals from the active energy meter and the reactive energy meter and accesses the signal data calculation and judgment circuit, and the control and alarm communication circuit compares the power factor calculated by the microcomputer; Automatic switching of reactive power equipment according to the size of the factor. the

The zero-line current signal acquisition circuit 21 outputs a current signal suitable for requirements from the zero-sequence current transformer twice through a certain load resistance, and accesses the signal data calculation and judgment circuit, control and alarm communication circuit; when collecting the zero-line current signal If the data is higher than the specified value by comparison, an alarm signal will be issued. the

The phase line grounding signal acquisition circuit 2J collects the phase line grounding signal from the residual current protector, and connects it to the control and alarm communication circuit; when the phase line grounding occurs in the system, an alarm signal is sent. the

The zero line disconnection signal acquisition circuit 2K collects the neutral line disconnection signal from the neutral line disconnection protector, and connects it to the control and alarm communication circuit; when the neutral line disconnection occurs in the system, an alarm signal is sent. the

The harmonic signal acquisition circuit 2M collects the harmonic signal from the harmonic detector and connects it to the control and alarm communication circuit; when the harmonic exceeds the standard, the system sends out an alarm signal. the

Fig. 3 is a block diagram of the signal data calculation and judgment circuit of the present invention, the signal data calculation and judgment circuit includes: A/D conversion circuit 31, calculation and judgment circuit 32, executive element 33; said executive element output has two ends, and one end is connected to said The equipment operating circuit, and the other end is connected to the control and alarm communication circuit. the

The input of the A/D conversion circuit 31 is connected to the output terminal of the signal data acquisition circuit, the output of the A/D conversion circuit is connected to the calculation and judgment circuit 32, and the calculation and judgment circuit is connected to the executive element 33, and the executive element One end of the output is connected to the device operation circuit, and the other end is connected to the control and alarm communication circuit. the

After the data calculation and judgment circuit obtains various signal data from the signal acquisition circuit, after the signal data is A/D converted to meet the requirements, it is input into the calculation and judgment circuit for calculation and comparison, and the comparison result is output to the actuator for switching equipment or Call the police. the

Fig. 4 is a block diagram of the equipment operating circuit of the present invention, the equipment operating circuit includes the opening and closing control circuit 41 of the high-voltage switch motor mechanism, the opening and closing control circuit 42 of the low-voltage switch motor mechanism, and the control of the automatic switching device of the reactive power compensation equipment Circuit 43; the equipment operation signals are respectively from the output terminal of the signal data calculation and judgment circuit, the output terminal of the control and alarm communication circuit;

The high-voltage switch opening and closing control circuit 41 is the opening and closing circuit of the high-voltage switch motor mechanism for the operation; when the high-voltage switch obtains the opening and closing signals, the high-voltage switch performs automatic opening and closing operations, and the high-voltage switch Alarm notification after status change. the

The low-voltage switch opening and closing control circuit 42 is the opening and closing circuit of the low-voltage switch motor mechanism of the operation; after the low-voltage switch obtains the switch opening and closing signals, the low-voltage switch performs automatic opening and closing operations, and the low-voltage switch Alarm notification after the switch state changes. the

The control circuit 43 of the automatic switching device for reactive power compensation equipment is the automatic operation switching circuit of the automatic switching device for reactive power compensation equipment; when the power factor signal is obtained, the automatic switching device for reactive power compensation equipment Automatic switching operation, alarm notification when the status of the automatic switching device of reactive power compensation equipment changes. the

Fig. 5 is the composition block diagram of optical transceiver circuit of the present invention, and optical transceiver circuit comprises light receiving circuit 51, light transmitting circuit 52, optical fiber cable 53; Signal, convert the optical signal into an electrical signal and output it to the box-type transformer power supply intelligent control device; the other end is connected to the optical transmission circuit, convert the electrical signal into an optical signal and transmit it to the power distribution intelligent control center through the optical fiber cable. the

When the signal is transmitted outward, the optical transceiver circuit performs encoding according to the regulations, and the signal is transmitted outward after encoding. After receiving a certain signal, the optical transceiver circuit decodes and transmits it to the execution circuit according to regulations. the

When the on-duty personnel need to operate the system equipment remotely, the operation signal can be transmitted through the optical fiber cable circuit, which can shorten a lot of time and improve safety and reliability. When the on-duty personnel need to inspect the system equipment, they can check various operating conditions one by one through the optical fiber cable circuit in the distribution network intelligent control center. the

6A is a block diagram of the wireless communication transmitting circuit of the present invention; the wireless communication circuit includes a wireless transmitting circuit and a wireless receiving circuit; the wireless transmitting circuit includes a signal input circuit 61, an encoding circuit 62, and a transmitting circuit 63; the signal The input circuit is connected to the power control box, the output of the signal input circuit is connected to the encoding circuit, and the encoding circuit is connected to the transmitting circuit; the signal of the box-type transformer power supply intelligent control device is transmitted to the intelligent control center of the distribution network or the electrician's mobile phone superior;

When the signal of abnormal changes in the box-type transformer equipment is obtained, the signal is immediately encoded and transmitted to the electrician's mobile phone and the intelligent control center of the distribution network. the

6B is a block diagram of the wireless communication receiving circuit of the present invention; the wireless receiving circuit includes a signal receiving circuit 65, a decoding circuit 66, and an execution circuit 67; the signal receiving circuit is connected to the decoding circuit, and the decoding circuit is connected to The execution circuit, the execution circuit output is connected to the box-type transformer power supply intelligent control device; receives the signal from the distribution network intelligent control center or the electrician's mobile phone, and controls or checks the power supply equipment. the

The wireless communication circuit can adopt mobile phone module, Internet. the

When the box-type transformer power supply equipment needs to be put into or out of operation, it can be operated remotely through the wireless receiving circuit without going to the site of the power supply equipment, which can save time. the

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention. the

Claims (3)

1. A box-type transformer power supply intelligent control device is characterized in that: comprise signal data acquisition circuit, signal data calculation judgment circuit, equipment operation circuit, control, alarm communication circuit; Wherein, described signal data acquisition circuit is from box-type transformer The signal data is collected by the power supply equipment, the output terminal is connected to the signal data calculation and judgment circuit, the control and alarm communication circuit, the output of the signal data calculation and judgment circuit is connected to the device operation circuit, the control and alarm communication circuit, the control and alarm communication The circuit output is connected to the intelligent control center of the distribution network or the mobile phone of the electrician on duty; The signal data acquisition circuit includes a high-voltage switch position signal acquisition circuit, a low-voltage switch position signal acquisition circuit, a transformer temperature signal acquisition circuit, a cable temperature signal acquisition circuit, a low-voltage voltage signal acquisition circuit, a low-voltage current signal acquisition circuit, and a high-voltage current signal acquisition circuit , power factor signal acquisition circuit, zero line current signal acquisition circuit, phase line grounding signal acquisition circuit, zero line disconnection signal acquisition circuit, harmonic signal acquisition circuit; wherein the high voltage switch position signal acquisition circuit is obtained from the high voltage switch The position signal is collected at the auxiliary contact of the electric operating mechanism, and connected to the control and alarm communication circuit; the position signal acquisition circuit of the low-voltage switch collects the position signal from the auxiliary contact of the electric operating mechanism of the low-voltage switch, and is connected to the control and alarm communication circuit; The transformer temperature signal acquisition circuit is to collect temperature data signals from the transformer temperature sensor, and is connected to the signal data calculation and judgment circuit, control and alarm communication circuit; the cable temperature signal acquisition circuit is to connect the temperature sensor to the cable head At a certain position, the cable temperature data signal is collected from the temperature detection element, and connected to the signal data calculation and judgment circuit, control and alarm communication circuit; After a certain value of resistance is stepped down, a suitable voltage signal is output, connected to the number data calculation and judgment circuit, control and alarm communication circuit; the low-voltage current signal acquisition circuit is to pass the A, B, C three-phase current through the current transformer and After the load resistance is converted, the current signal suitable for the requirements is output, and the signal data calculation and judgment circuit is connected to the control and alarm communication circuit; the high-voltage current signal acquisition circuit is to convert the high-voltage one-phase current through the current transformer and the load resistance. The required current signal is connected to the signal data calculation and judgment circuit, and the control and alarm communication circuit; the power factor signal acquisition circuit is used to collect active and reactive energy signals from the active energy meter and the reactive energy meter to access the signal data calculation and judgment circuit , control and alarm communication circuit; the zero-line current signal acquisition circuit outputs a current signal suitable for requirements from the zero-sequence current transformer twice through a certain load resistance, and accesses the signal data calculation and judgment circuit to control and alarm communication circuit; The phase line grounding signal acquisition circuit collects the phase line grounding signal from the residual current protector, and accesses the control and alarm communication circuit; the neutral line disconnection signal acquisition circuit collects the zero line disconnection signal from the zero line disconnection protector , access control, alarm communication circuit; described harmonic signal acquisition circuit, collect harmonic signal from harmonic detector, access signal data calculation and judgment circuit, control, alarm communication circuit; The signal data calculation and judgment circuit includes an A/D conversion circuit, a calculation and judgment circuit, and an actuator; the input of the A/D conversion circuit is connected to the output terminal of the signal data acquisition circuit, and the output of the A/D conversion circuit is connected to the described A data calculation and judgment circuit, the output of the data calculation and judgment circuit is connected to the actuator; the output of the actuator has two terminals, one terminal is connected to the device operation circuit, and the other terminal is connected to the control and alarm communication circuit; The equipment operation circuit includes the opening and closing control circuit of the high-voltage switch electric mechanism, the opening and closing control circuit of the low-voltage switch electric mechanism, and the control circuit of the automatic switching and switching device of the reactive power compensation equipment; the input signals of the equipment operation circuit are respectively from the signal data Calculation and judgment circuit, control and alarm communication circuit output terminals; wherein, the high-voltage switch opening and closing control circuit refers to the operating high-voltage switch motor mechanism opening and closing circuit; the low-voltage switch opening and closing circuit The control circuit refers to the opening and closing circuit of the low-voltage switch motor mechanism for the operation; the control circuit of the automatic switching device of the reactive power compensation equipment refers to the control circuit of the automatic switching device of the reactive power compensation equipment. Automatic operation switching circuit. 2. The box-type transformer power supply intelligent control device according to claim 1, characterized in that: it also includes an optical transceiver circuit, and the optical transceiver circuit includes an optical fiber cable, an optical receiving circuit, and an optical transmitting circuit; one end of the optical receiving circuit Connecting the optical fiber cable is to receive the signal from the distribution network power supply intelligent control center, convert the optical signal into an electrical signal and send it to the box-type transformer power supply intelligent control device; the other end is connected to the optical transmission circuit, and the box-type transformer power supply intelligent control device The electrical signal is converted into an optical signal and transmitted to the distribution network intelligent control center through the optical fiber cable. the 3. The box-type transformer power supply intelligent control device according to claim 1, characterized in that: the control and alarm communication circuit is a wireless communication circuit, and the wireless communication circuit includes a wireless transmitting circuit and a wireless receiving circuit; The wireless transmission circuit includes a signal input circuit, an encoding circuit, and a transmission circuit; the signal input circuit is connected to the signal data acquisition circuit and the data calculation and judgment circuit; the output of the signal input circuit is connected to the encoding circuit, The encoding circuit is connected to the transmitting circuit; it is to transmit the signal of the intelligent control device of the box-type transformer to the intelligent control center of the distribution network or the mobile phone of the electrician on duty; The wireless receiving circuit includes a signal receiving circuit, a decoding circuit, and an execution circuit; the signal receiving circuit is connected to the decoding circuit, the decoding circuit is connected to the execution circuit, and the output of the execution circuit is connected to the power control box; The signal from the network intelligent control center or the mobile phone of the electrician on duty is used to control the power supply equipment of the box-type transformer or inspect it. the

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