Overvoltage control terminal and distributed management system and method based on equal potential

[0048] Please refer to figure 1 , an overvoltage control terminal 1 in this embodiment, including an overvoltage control module 11, a discharge monitoring module 12, a fatigue monitoring module 13, a self-detachment module 14 and a communication module 15, wherein:

[0049] The overvoltage control module 11 is configured to control the conduction or cutoff of the internal circuit of the module according to the value of the access voltage, which is used to ease the steepness of the overvoltage wave front, limit the peak value of the overvoltage and suppress the energy of the overvoltage;

[0050] The discharge monitoring module 12 is used to monitor the switch state of the overvoltage control module 11, measure the value of the discharge current when the overvoltage control module 11 is connected to the voltage and conduction, analyze the probability of overvoltage and the magnitude of the overvoltage, and The collected and analyzed data is transmitted to the self-detachment modul

[0063] Please refer to image 3 As shown, this embodiment provides an equipotential-based distributed management system, which uses a single power supply distribution network as the background for the arrangement of equipotential-based overvoltage control terminals, where the power distribution network adopts a 10kV system and comes from the same For transformers, overvoltage control terminals 1101, 1102, ... 110N are respectively arranged in each branch according to the needs, and a centralized monitoring device 2 is arranged in the PT cabinet of the busbar. The volt-ampere characteristic curves of the overvoltage control terminals 1101, 1102, ... 110N are consistent , the protection parameters are configured according to the weakest insulation withstand capability of all branch power supply equipment, and the overvoltage control terminals 1101, 1102, ... 110N jointly undertake the overvoltage control of the distribution network at 10kV potential, and the overvoltage control term

[0065] Please refer to Figure 4 , an equipotential-based distributed management system provided in this embodiment, with a dual-power distribution network as the background, is arranged based on an equipotential overvoltage control terminal, and the power distribution network adopts a 10kV system and comes from two different transformers , the power distribution network constitutes two potentials of the 10kV system section I and the 10kV system section II. According to the system operation mode and the needs of power supply and consumption equipment, overvoltage control terminals 1101, 1102, ... 110N are respectively arranged in each branch of the 10kV I section. Overvoltage control terminals 2101, 2102, ... 210N are respectively arranged in each branch of section II of the 10kV system, and centralized monitoring devices 2 are arranged in the PT cabinets of each section of the bus. According to the needs of electrical equipment, the overvoltage control terminals 1101, 1102, ...