English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Isolation switch of the high voltage alternating current usually emerge some faults, as the suffered losses of electrical power system is increasing, people will begin to pay attention to the fault problems of isolation switch. Through knowing the basic performance of isolation switch, people give some typical faults and solving problems of isolation switch that often happens in the electrical power system, and improve operating qualities of isolation switch, reduce some faults, improve the stability and security of system. Introduction Isolation switch plays an important role in isolating power,separating and closing the low load current,switching operation in the electrical power system. As devices update,Substations where nobody is on duty transform and Substations devices from regular maintenance system to condition maintenance system, the running outside isolation switch appears some problems that are rising greatly in recent years, affect power supply reliability and security of the system directly. In this thesis, it analyzes isolation switch of the alternating current problems, give some solving problems with these problems[1-3]. The isolation switch of the high voltage alternating current in needing technology In the electrical network, isolation switch of the high voltage alternating current is used to close and separate the circuit of no load and electrical equipments, its function includes achieving transmission of electricity and security isolation through normal operating current and fault current for the regulation short time credibly in the switching stage, but there are canonical insulation distance and apparent disconnected dots with switch contact in the separating switching stage, and it can make power equipments and power supply security isolation in the load side. The function of isolation switch is relative a little, so its construction is relative simple, there is arc-control device, and it can’t connect and disconnect load current. The overwhelming majority of isolation switch of the high voltage alternating current is operating in the open air, expose directly in the atmospheric environment, it is influenced easily by environment and climate, Product design and manufacturing should give full consideration to the factors, to ensure that all can work reliably in rain, wind, ice, snow, dust, cold and hot conditions[4].

The Research of Common Fault and Processing Methods of 220kV Isolation Switch