A parallel capacitor for 800kv circuit breaker

Abstract

The invention relates to the field of capacitors, in particular to a parallel capacitor for an 800kV circuit breaker. The 800kV circuit breaker uses parallel capacitors, including a fixed plate, a capacitor assembly and a fixed seat. The two ends of the fixed plate are respectively equipped with capacitor assemblies. The capacitor assembly and the fixed plate are connected by bolts and gaskets. The ends of the two capacitor assemblies are connected by the fixed plate. The assembly end of the capacitor is connected to the fixed plate through a nut and a washer. Its beneficial effects are: simple structure, easy to use, safe and reliable, get rid of the shackles of products affected by imported parts, facilitate design and installation, greatly improve the pressure equalization performance between fractures and improve the breaking performance, and the price Inexpensive and conducive to promotion.

Description

technical field [0001] The invention relates to the field of capacitors, in particular to a parallel capacitor applied to 800kV circuit breakers. Background technique [0002] With the continuous advancement of my country's power system technology, the research and development strength of major high-voltage electrical appliance manufacturing companies continues to increase, and the structure of high-voltage switches is more reasonable and the performance is more reliable. my country has enough strength to carry out research and development and production of ultra-high voltage and ultra-high voltage high-voltage electrical appliances; Moreover, with the strengthening of the country's economic strength, the continuous implementation of major national construction projects and the development of the western region, the demand for high-voltage switchgear is also increasing, and the voltage level is gradually increasing from 330kV and 550kV to 800kV. The technical and economic comp...

AI Technical Summary

Problems solved by technology

[0003] At present, the shunt capacitors used in high-voltage switches are all imported from abroad, rolled as a whole, then added with electrolyte, and pressed. Such capacitors can be made larger in capacity, but each capacitor is larger in size, and it is ineffective in terms of withstanding overvoltage. Poor and inflexible in application

It affects the design of circuit breakers, and there are certain doubts about its operational reliability. Due to the unique production characteristics of capacitors, domestic manufacturers currently do not have the ability to produce foreign capacitors.

Therefore, the capacitors used in China's current ultra-high voltage circuit breakers can only be imported from abroad, resulting in high production costs for circuit breakers, long supply cycles, and problems that are not easy to solve, affecting the supply cycle of domestic manufacturers

Images