基于双侧电流平衡原理的灵宝换流站阀短路保护优化研究  

Improvement of Valve Short Circuit Protection in Lingbao Converter Station Based on Kirhhoff's Current Law with Both Sides

作　　者：姚孟[1] 李应文 孟异山[1] 李小婧[2] 罗朝华[1] 刘天祥[1] 

机构地区：[1]国网河南省电力公司检修公司,河南郑州450000 [2]国网山西省电力公司电力科学研究院,山西太原030000

出　　处：《陕西电力》2016年第5期58-63,共6页Shanxi Electric Power

摘　　要：通过灵宝背靠背换流站直流系统阀短路保护动作方程分析,发现其在测量系统故障时存在误动的可能,针对该问题提出了优化的背靠背直流系统阀短路保护方案,即采用对侧的换流变阀侧交流电流作为制动量,并通过MATLAB仿真试验验证了该优化方案的正确性。Through analyzing the valve short protection（VSCP） equations in Lingbao Converter Station,it is found that the protection equations will mis-operate when the measure system fail.The optimized back-to-back HVDC valve short circuit protection scheme is put forward.The AC current in converter valve at opposite side is used as the amount of braking,the correctness of the scheme is proved by Matlab simulation test.

关 键 词：阀短路 动作方程 可靠性 背靠背 

分 类 号：TM773[电气工程—电力系统及自动化]