摘要
基于2016年山东电网规划数据,利用PSASP对山东电网进行等值建模,并结合工程实际,建立交直流混联系统模型。分析特高压交流系统投运对银东直流输电系统的影响,分析结果表明:特高压系统正常运行时可以增大短路容量,增大银东直流输电系统逆变侧短路比,有效抑制由交流系统故障所引起的银东直流系统换相失败;特高压系统发生单相接地故障时会引起银东直流输电系统换相失败,此时若在胶东换流母线加装一定量的无功补偿装置SVC可以有效缩短直流换相失败后的恢复时间。
A physical equivalent model of Shandong power grid was built in PSASP based on the data of Shandong power grid planning in 2016, and the hybrid system model was built combining the practical engineering. Impact of UHVAC on Yindong HVDC System was analyzed. The result showed that the UHVAC system can increase the short circuit capacity and short- circuit ratio of Yindong HVDC system, which have very good prevention effect for commutation failures of Yindong HVDC system caused by AC faults when normal operation. The single-phase-to-ground fault happened at UHVAC line would cause the commutation failure of Yindong HVDC system, while the recovery time will greatly reduce by adding a certain amount of reactive power compensation equipment SVC on the Jiaodong converter bus.
出处
《山东电力技术》
2016年第3期21-26,共6页
Shandong Electric Power
