摘要
随着银东±660 kV直流系统进入山东,作为受端系统的山东电网必将会对直流系统的正常运行产生影响。基于PSCAD仿真软件,对直流系统以及山东电网进行建模,并基于仿真模型对直流系统受端电网故障时的动态特性进行仿真研究。仿真结果表明,受端电网交流系统联络线发生对称故障以及不对称故障时,均会对直流系统的正常运行产生影响,并划分了交流系统各种故障下会造成银东直流换相失败的范围,提出了使用自适应性低压限流环节进行改进的措施。
Along with the Yindong 660 kV DC system accessed into Shandong power grid, the normal operation of Shandong power grid as the receiving system will be influenced. Based on PSCAD simulation software, the DC system and Shandong power grid modeling, and based on studied the simulation model dynamic characteristics when by end system faulted. The results show that the DC system normal operation will be influenced when the AC system tie-line happened symmetrical failure and asymmetric fault, and divides the AC system commutation failure area under DC system various failure, and the paper puts forward the use of adaptive low current limiting link improvement measures.
出处
《山东电力技术》
2012年第6期26-29,共4页
Shandong Electric Power
关键词
受端电网
PSCAD
故障
仿真
动态特性
receiving end network
PSCAD
fault
simulation
dynamic characteristics
