摘要
南方电网直流输电系统中,交流滤波器的电容器不平衡保护的动作正确率非常低,运行中发现,误动往往发生在交流滤波器投入涌流瞬间。这里首先从理论上阐述了交流滤波器投入瞬间产生涌流的原因,然后通过运行实例分析,提出了一些改进建议,以提高直流输电系统的运行可靠性。
The correct actuation rate of the unbalance current protection for capacitor of AC filter is very low in HVDC system of SCG. It was found that most of the mis-operation of this protection occurs at the moment when inrush current of AC filter happened. Here the reason that inrush current happens at the moment when switching on AC filter is formulated theorectically at first, then with analyzing the practical operation examples, suggestions are put forward to improve the reliability of HVDC system operation
出处
《广东输电与变电技术》
2011年第1期19-21,25,共4页
Guangdong Power Transmission Technology
关键词
交流滤波器
电容器不平衡保护
涌流
AC filter The Unbalance Current Protection Inrush Current
