高压直流受端电网暂态电压安全预防控制方法  

Transient Voltage Security Preventive Control Method for HVDCReceiving-End Power Grid

作　　者：赵泽麟 赵晋泉[1] 单瑞卿 张振安 崔惟 刘明洋 ZHAO Zelin;ZHAO Jinquan;SHAN Ruiqing;ZHANG Zhen’an;CUI Wei;LIU Mingyang(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;State Grid Henan Electric Power Company,Zhengzhou 450052,China)

机构地区：[1]河海大学能源与电气学院,南京211100 [2]国网河南省电力公司,郑州450052

出　　处：《南方电网技术》2023年第3期1-9,共9页Southern Power System Technology

基　　金：国家自然科学基金资助项目(51577049);国家电网有限公司总部管理科技项目“含新能源、储能及柔性负荷的无功电压协调控制关键技术研究”(5108-202024029A-0-0-00)。

摘　　要：随着直流馈入电能的增加,受端电网的“空心化”趋势对暂态电压安全构成严重威胁。为此提出了一种面向直流受端电网的暂态电压安全预防控制方法。将预防控制问题分解为暂态电压安全评估、灵敏度分析和优化控制3个子问题来迭代求解。采用适于灵敏度方法的暂态电压严重性指标实现暂态电压安全约束的构建。通过限制线性灵敏度有效控制区间、参与控制集筛选等策略提高求解的准确性及效率。该方法在河南电网得到实际应用,应用结果表明所提模型与方法是有效的。With the increase of HVDC feed power,the"hollowing"of receiving-end power grid poses a serious threat to the transient voltage security.Therefore,a transient voltage security preventive control method for HVDC receiving-end power system is proposed in this paper.The preventive control method is decomposed into three sub problems:transient voltage security assessment,sensitivity analysis and optimal control.A transient voltage severity index suitable for sensitivity method is used to construct transient voltage security constraints.The ac⁃curacy and efficiency of the solution are improved by limiting the effective control interval of sensitivity and selection of control set.The method has been applied in Henan power grid.The application results verifies the effectiveness of the proposed method.

关 键 词：高压直流受端电网 暂态电压安全 预防控制 灵敏度 

分 类 号：TM761[电气工程—电力系统及自动化]