High-voltage isolation switch shunt system

Abstract

The invention discloses a high-voltage isolation switch shunt system. The high-voltage isolation switch shunt system comprises a wire holder, an internal wire and a drainage wire, wherein the internal wire is arranged inside the wire holder; and the drainage wire is arranged outside the wire holder and is connected with the internal wire in parallel. The drainage wire is arranged on the outer side of an original isolation switch wire holder, the drainage wire and an original wire inside the wire holder form a parallel connection relation, a part of current passing through the original wire is shunted to the drainage wire, and the current on the original wire is correspondingly reduced, so that the calorific value of the wire holder is reduced, and the operation of the calorific value in a safe range is guaranteed. In the design, the isolation switch does not need to be replaced completely, and the wire holder also does not need to be dismantled to maintain components, so that time, troubles and money are saved, the problem of heating is thoroughly solved, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of high-voltage isolating switches, in particular to the field of troubleshooting of heating faults of isolating switches. Background technique [0002] In the high-voltage power distribution equipment installations of power generation, power transmission and transformation, and power distribution network systems, the isolating switch is the main equipment used to reliably isolate the part that needs power failure from the live part. points to ensure the safety and reliability of on-site maintenance work. Since the isolating switch does not have an arc extinguishing device, the contact terminal blocks are all exposed to the air, so they cannot be used to cut off the load current or short-circuit current, otherwise under the action of high voltage, a strong arc will be generated at the disconnection point, and it is difficult to extinguish itself , Even cause arc short circuit, burn equipment, endanger perso...

AI Technical Summary

Problems solved by technology

[0003] Every summer and autumn with high heat and high water season, most transmission lines, disconnectors, and busbars are in a state of high-load energy operation, resulting in severe heating of the disconnector terminal block due to oxidation, poor contact, and excessive energy load.

Among them, when high-energy-carrying and high-current passes through the soft copper sheet curled in the relatively sealed and small-space terminal block, under the dual effects of the eddy current effect and the high-voltage skin effect generated on the soft copper sheet, it will inevitably lead to wiring failure. severe fever

In view of the above situation, the existing solutions include two kinds of overall replacement and disassembly of maintenance parts. The above-mentioned solutions can only last for a long time without power supply, huge economic losses, and incomplete solution to the heating problem.

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