Test method for series compensation protection device

Abstract

The invention discloses a testing method of a series compensation protection device. The series compensation protection device comprises a capacitor bank C, a normally open contact GS1, a normally open contact DS1, a normally open contact GS2, a normally open contact DS2, a normally open contact Contact MBS, varistor MOV1, varistor MOV2, damping circuit, spark gap GAP, bypass switch BPS and insulating platform; capacitor bank C includes capacitor C1, capacitor C2, capacitor C3 and capacitor C4, capacitor C1 and capacitor C2 are connected in series, capacitor C2 and capacitor C3 in series, capacitor C3 and capacitor C4 in series, capacitor C4 and capacitor C1 in series; the damping loop includes resistor R1, varistor R2 and inductor L, resistor R1 and varistor R2 in series, varistor R2 and inductor L in series, inductor L in series with resistor R1. The series compensation protection device of the invention ensures the triggering reliability of the spark gap, the continuity of spark gap triggering, the correctness of the action behavior of the spark gap, high trigger reliability, high withstand voltage level and low failure rate.

Description

technical field [0001] The invention relates to the technical field of series compensation protection, in particular to a testing method of a series compensation protection device. Background technique [0002] The series capacitor compensation technology is to improve the transmission capacity of the line. The capacitor is connected in series to the line. When the high-voltage line is faulty, the metal oxide arrester (MOV) connected in parallel with the capacitor will act immediately, and at the same time limit the voltage change across the capacitor, but When the energy accumulated by the MOV cannot be dissipated quickly, it will explode and be damaged. Therefore, a spark gap is connected in parallel at both ends of the MOV. When a fault is found, the spark gap is triggered, and finally the control system controls the bypass circuit breaker to quickly bypass. Protect capacitors and MOVs. It can be seen that the triggering device of the spark gap is very important. If it c...

AI Technical Summary

Problems solved by technology

2) There are many analog acquisition circuits and many protection functions

3) The action results of the series compensation protection device have high similarity

[0005] Existing test methods for series compensation protection devices have a high failure rate of spark gaps and are often unreliable in triggering

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