Moving contact of 330kV isolating switch of converting station

Abstract

The invention relates to a moving contact of a 330kV isolating switch of a converting station. The moving contact of the 330kV isolating switch of the converting station is an improvement of the moving contact of a GW7-330/1600 type isolating switch. The moving contact of the 330kV isolating switch of the converting station comprises a moving contact body. A hook fixing rod is fixedly arranged on the moving contact body. A limiting hook is arranged at the head end of the hook fixing rod. The moving contact of the 330kV isolating switch of the converting station is characterized in that a liner plate is arranged at one end of a tube body of the moving contact, and the inner diameter of the liner plate is the same as that of the tube body. A gap is formed between the liner plate and the hook fixing rod. The liner plate is in clearance fit with the inner diameter of the tube body of the moving contact. The liner plate is in a T shape. The contact face, contacting with the inner diameter of the tube body, of the T-shaped liner plate is provided with an arc which is matched with the inner diameter of the tube body. The lower ends of two wings of the T-shaped liner plate are clamped on the upper end face of the tube body of the moving contact. The moving contact of the 330kV isolating switch of the converting station meets operating requirements of the system, improves operating reliability of equipment, prolongs the service life of operation of the equipment, improves stability, avoids and reduces emergencies and serious forced shutdowns, eliminates inherent hidden dangers of the equipment, improves operation security coefficient of the equipment, and provides reliable guarantee for safe and economical operation of a power grid.

Description

technical field [0001] The invention relates to an isolating switch, in particular to a movable contact of a 330KV isolating switch in a substation, which is an improvement on the moving contact of a GW7-330 / 1600 isolating switch. Background technique [0002] There are 37 groups of 330kV isolating switches in Lanzhou West Substation, 26 groups were put into operation in 1999, and 11 groups were put into operation in 2001. The manufacturer is Shenyang High Voltage Switchgear Factory. The product model is: GW7-330 / 1600, hereinafter referred to as GW7 type isolating switch. Lanzhou West Substation is located in Shuping Town, Yongdeng County, which is a heavy chemical pollution area in Lanzhou. Especially since 2007, 26 large and small brick factories have been continuously built around the substation. The brick factories emit a large amount of SO 2 The gas forms corrosive acid rain in wet or rainy days, which leads to serious corrosion and rust of outdoor equipment. After th...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned shortcoming of prior art, provide a kind of substation 330KV isolating switch movable contact that improves equipment operation reliability and service life; In place and the phenomenon of jamming of the rotating part, eliminate the inherent hidden dangers of the equipment itself, improve the operation stability, avoid reducing the occurrence of emergency and major forced stop defects, and ensure the safe operation of the power grid

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