计及传播路径的电力系统连锁故障多阶段阻断控制  

Multi-stage blocking control of power system cascading failures considering propagation path

作　　者：刘雨濛 顾雪平[1] 王涛[1] LIU Yumeng;GU Xueping;WANG Tao(School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电力自动化设备》2021年第12期151-157,共7页Electric Power Automation Equipment

基　　金：河北省自然科学基金资助项目(E2019502195)。

摘　　要：开展连锁故障的多阶段阻断控制研究对于电力系统安全稳定运行及电网的升级改造均具有重要的应用价值。简要阐述了过载主导型连锁故障的传播过程,并分析了该类型的连锁故障传播路径与阻断控制策略间的交互影响。在此基础上,针对考虑传播路径的连锁故障开展了多阶段阻断控制研究,提取了故障/非故障路径线路的停运概率约束以及潮流控制力度约束,建立了以期望控制成本和失负荷风险之和最小为目标的考虑传播路径连锁故障多阶段控制模型。算例分析结果表明,基于该连锁故障阻断控制模型求得的控制策略能够在驱动连锁故障仍按预测传播路径发展的同时有效降低故障路径内线路故障概率,为连锁故障的防御决策提供了重要参考。Carrying out researches on multi-stage blocking control of cascading failures has important application values for the safe and stable operation of power system and upgrading of power grid.The propagation process of cascading failures caused by overload is briefly described,and the interaction effects between propagation paths of this type of cascading failures and blocking control strategies are analyzed.On this basis,in view of cascading failures considering propagation path,the researches on multi-stage blocking control are carried on,the outage probability constraints of lines in fault/non-fault path and the constraints of power flow control strength are extracted.Then,taking the minimum of the sum of expected control cost and the risk of load loss as the objective,the multi-stage control model considering cascading failures of propagation path is established.Finally,numerical results indicate that the control strategies generated by the proposed model can effectively reduce the fault probability of lines in fault path while driving the cascading failures follow the predicted propagation path,which provides an important reference for the defense decision of cascading failures.

关 键 词：电力系统 连锁故障 传播路径 多阶段阻断控制 运行风险 

分 类 号：TM711[电气工程—电力系统及自动化]