Resonance overvoltage suppression device and suppression method

Abstract

The invention relates to the technical field of power distribution network auxiliary equipment, and particularly discloses resonance overvoltage suppression equipment and a suppression method, the resonance overvoltage suppression equipment comprises a bottom plate and a mounting box, the top of the bottom plate is provided with two fixing plates through threads, and two sliding rods are fixed between the two fixing plates. According to the invention, the linear resonance eliminator is connected in parallel with the open triangle of the voltage transformer, and the data acquisition module monitors the energy for generating ferromagnetic resonance in the system, and transmits the monitored information to the comprehensive processing module. The comprehensive processing module receives detection information of the data acquisition module and then sends out a corresponding signal to control and start the linear resonance eliminator, the linear resonance eliminator is used for consuming and triggering energy for generating ferromagnetic resonance, and the linear resonance eliminator is used for consuming and triggering the energy for generating ferromagnetic resonance in the system. Therefore, the voltage transformer in the system is prevented from being burnt out due to resonance overvoltage generated by the voltage transformer, and resonance of the voltage transformer can be thoroughly eradicated from the source.

Description

technical field [0001] The invention relates to the technical field of distribution network auxiliary equipment, in particular to a suppression device and a suppression method for resonance overvoltage. Background technique [0002] The distribution network is composed of overhead lines, cables, towers, distribution transformers, isolation switches, reactive power compensators and some ancillary facilities, and plays an important role in distributing electrical energy in the power network. [0003] There are many inductive and capacitive elements in the power system. During switching operation or failure, these inductive and capacitive elements may form oscillating circuits with different natural frequencies, which will cause resonance under the action of the external power supply and cause resonance overvoltage. Resonance often causes overvoltage in a certain part of the power grid, which endangers the insulation of electrical equipment, and even generates overcurrent to bu...

AI Technical Summary

Problems solved by technology

[0003] There are many inductive and capacitive components in the power system. When the switch is operated or a fault occurs, these inductive and capacitive components may form an oscillation circuit with different natural resonance frequencies, which will generate resonance under the action of an external power supply, causing resonance overvoltage. Resonance often causes overvoltage in a certain part of the grid, which endangers the insulation of electrical equipment, and even burns the equipment due to overcurrent, and may also affect the normal working conditions of the overvoltage protection device. Therefore, in order to solve such problems, we propose a Resonant overvoltage suppression equipment and suppression method

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