Overvoltage suppression device

Abstract

The invention discloses an overvoltage suppression device. The overvoltage suppression device comprises a voltage transformer, a high-capacity overvoltage protector, a high-voltage fuse, an intelligent resonance elimination switch and a microcomputer integrated protection device, wherein one end of the high-capacity overvoltage protector and one end of a fast fuse are connected with a high-voltage isolation switch, the other end of the high-capacity overvoltage protector is connected with the ground, the other end of the fast fuse is connected with the voltage transformer, the voltage transformer is connected with the intelligent resonance elimination switch and the microcomputer integrated protection device, the microcomputer integrated protection device is connected with the intelligent resonance elimination switch, the intelligent resonance elimination switch is connected with the ground, the high-capacity overvoltage protector comprises a base, a capacitor, a compensation capacitor, a voltage regulator, a photoelectric switch and a high-voltage current limiting switch, the capacitor is arranged on the base, a detector is arranged between the capacitor and the interior of the base, the compensation capacitor is connected with the capacitor, a lightning prevention module is connected with a signal emitter, the voltage regulator is arranged at one side of the base, the photoelectric switch is arranged at one side of the voltage regulator, and the high-voltage current limiting fuse is arranged at the other side of the base.

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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