摘要
长距离大功率输电系统,在因故障引起的暂态过程中,功角振荡衰减得很慢,有时甚至不衰减,主要原因是系统本身缺乏足够的阻尼。本文从理论上论证了一种基于PWM的静止无功补偿器(PSVC)能够提高系统阻尼特性的原理;并利用等面积法则证明了PSVC采用频率作为控制信号时具有最佳的阻尼效果,给出了PSVC的模型;最后通过仿真计算所得的结果,验证PSVC提高系统阻尼特性的效果。
In the long distance and large power transmission system, the vibration of power angle hardly decays. The main reason is the shortage of system damping. This paper demonstrates that PWM static var compensator (PSVC) increases the system damping. And by the use of equal area principle, the most optimal damping is tested when PSVC adopts frequency as a control signal. And then the PSVC model is presented. Finally the simulation and calculation results certify the damping characteristics of PSVC.
出处
《继电器》
CSCD
北大核心
2003年第10期18-22,共5页
Relay
