As large enterprises, there a lot of emotional load, power grids need to absorb

the large number of non-functional capacity, the electricity sector in order to save power

and improve the quality of power, the need for reactive power compensation

system.Thyristor switched capacitor(TSC)is a new direction of the static vat

compensator(SVC)technology

．

The characteristics of its various main circuits are

analyzed

．

Some key problems on developing TSC device are introduced including the

criterion of switched capacitor

，

the data detectionmethod

，

zero—voltage switching—on

and the triggering circuit for thyristors- As　large　enterprises,　there　are　a　lot　of　emotional　load,　power　grids　need　to　absorb

the large number of non-functional capacity, the electricity sector in order to save power

and　improve　the　quality　of　power,　the　need　for　reactive　power　compensation

system.Thyristor　switched　capacitor(TSC)is　a　new　direction　of　the　static　vat

compensator(SVC)technology

．

The　characteristics　of　its　various　main　circuits　are

analyzed

．

Some　key　problems　on　developing　TSC　device　are　introduced　including　the

criterion of switched capacitor

，

the data detectionmethod

，

zero—voltage switching—on

and　the　triggering　circuit　for　thyristors