Overvoltage suppression device

Abstract

The invention discloses an overvoltage suppressing device, which comprises a voltage transformer, a high-capacity overvoltage protector, a high-voltage fuse, an intelligent harmonic elimination switch, and a microcomputer comprehensive protection device; one end of the high-capacity overvoltage protector, and a fast fuse One end is connected to a high-voltage isolation switch, the other end of the high-capacity overvoltage protector is grounded, and the other end of the fast fuse is connected to a voltage transformer. Switch, intelligent harmonic elimination switch grounding; high-capacity overvoltage protector includes base, capacitor, compensation capacitor, voltage regulator, photoelectric switch and high-voltage current-limiting fuse; the capacitor is installed on the base, between the capacitor and the inside of the base Set up the detector, connect the compensation capacitor to the capacitor, connect the lightning protection module to the signal transmitter, install a voltage regulator on one side of the base, install a photoelectric switch on one side of the voltage regulator, and install a high-voltage current-limiting fuse on the other side of the base device.

Description

technical field [0001] The invention specifically relates to an overvoltage suppression device. Background technique [0002] At present, for the non-direct grounding system of the neutral point, the current electric power regulations in my country allow the operation with a single-phase ground fault for 2 hours. Here it refers to the metallic grounding. If it is grounded by arc light, it will cause serious harm. The single-phase ground fault is Arcing grounding will generate an arcing overvoltage with a maximum value of 3.5 times or more of the phase voltage in the system. If such a high overvoltage acts on the power grid for several hours, it will inevitably cause cumulative damage to the insulation in the electrical equipment. The weak link causes insulation to ground breakdown, which will lead to a major accident of short circuit between phases. Contents of the invention [0003] The purpose of the present invention is to provide a kind of electric system that can reduc...

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Problems solved by technology

[0002] At present, for the non-direct grounding system of the neutral point, the current electric power regulations in my country allow the operation with a single-phase ground fault for 2 hours. Here it refers to the metallic grounding. If it is grounded by arc light, it will cause serious harm. The single-phase ground fault is Arcing grounding will generate an arcing overvoltage with a maximum value of 3.5 times or more of the phase voltage in the system. If such a high overvoltage acts on the power grid for several hours, it will inevitably cause cumulative damage to the insulation in the electrical equipment. The weak link causes insulation to ground breakdown, which will cause a major accident of phase-to-phase short circuit

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