高压静止无功补偿器用晶闸管阀均压／阻尼电路参数的优化

The optimization of voltage equalizing and damping circuit value of the thyristor valve used in the static var compensator

静止无功补偿器(SVC)在提高电力系统供电质量和运行稳定性等方面发挥了重要作用。本文详细分析了SVC用晶闸管阀的均压/阻尼电路参数对系统电压和电流的影响,通过仿真计算,分析提出了优化晶闸管阀均压/阻尼电路参数的指导原则。试验比较结果表明:采用优化电路参数,关断时刻晶闸管阀产生的电压冲击小,无电压振荡,对系统的影响小。

Static var compensator has played an important role in improving the oprational stability and voltage quality of the Dower system. This parr analyzed the influence of voltage equalizing and damping circuit, and through plentiful simulation and calculation, a guidance, which is to help optimize the ci.rcuit value of the voltage equalizing and damping circuit, has been put forward. The experiment result indicates that the thyristor valve generates a little voltage impulsion without voltage osciiiation at the switching time, and has a little influence on the power system.