多直流馈入华东受端电网暂态电压稳定性分析.pdf

第 35 卷 第 12 期 电 网 技 术 Vol. 35 No. 12 2011 年 12 月 Power System Technology Dec. 2011 文章编号：1000-3673 （2011 ）12-0050-06 中图分类号：TM 744 文献标志码：A 学科代码：470·4054 多直流馈入华东受端电网暂态电压稳定性分析 邵瑶，汤涌，郭小江，周勤勇 （中国电力科学研究院，北京市海淀区 100192 ） Transient Voltage Stability Analysis of East China Receiving-End Power Grid With Multi-Infeed HVDC Transmission Lines SHAO Yao, TANG Yong, GUO Xiaojiang, ZHOU Qinyong (China Electric Power Research Institute, Haidian District, Beijing 100192, China) ABSTRACT: Based on the summer peak load operation mode 摘要：基于 2015 年“三华”特高压规划电网的丰大运行方 of the planned “North China-Central China-East China” UHV 式，利用短路比和多馈入短路比指标分析了华东受端电网的 power grid in 2015, there will be 10 HVDC transmission lines 强度，并讨论了受端系统网架调整和直流系统落点位置对短 feeding into East China power grid. The strength of East China 路比/ 多馈入短路比的影响。采用 PSD-BPA 暂态稳定程序， receiving-end power grid is analyzed by short circuit ratio 分析了华东受端电网在各种故障下的暂态电压稳定性。结果 (SCR) and multi-infeed short circuit ratio (MISCR), and the 表明：直流系统落点位置对华东受端电网强度的影响较大； impacts of network topology adjustment in receiving-end 交直流系统单一故障、受端特高压交流通道和逆变站换流母 power grid and the positions where the multi-infeed DC 线附近线路发生三相永久性短路跳双回故障，大部分直流系 transmission lines are connected with East China receiving-end 统双极闭锁均不会导致华东受端电网暂态电压失稳；锦屏— power grid on SCR/MISCR are dissected. By use of PSD-BPA 同里、锡盟—金坛、复龙—奉贤和溪洛渡—浙西特高压直流 transient stability program, transient voltage stability of East 发生双极闭锁故障后，送端电网需采取切机措施才能保持系 China receiving-end power grid under various faults is 统稳定。 analyzed. Analysis results show that the p