基于机电–电磁混合仿真的交直流混联受端电网连锁故障筛选指标及搜索策略  

Screening indices and Search Strategy for AC-DC Hybrid Receiving-end Power Grid Cascading Failures Based on Hybrid Electromechanical-electromagnetic Simulation

作　　者：边晓燕 杨云轶 黄阮明[2] 周歧斌 王晓晖 李东东 BIAN Xiaoyan;YANG Yunyi;HUANG Ruanming;ZHOU Qibin;WANG Xiaohui;LI Dongdong(College of Electric Power Engineering,Shanghai University of Electric Power,Pudong Distirct,Shanghai 200090,China;Economic&Technological Institute,State Grid Shanghai Municipal Electric Power Company,Xuhui District,Shanghai 200233,China;School of Mechatronic Engineering and Automation,Shanghai University,Baoshan Distirct,Shanghai 200444,China)

机构地区：[1]上海电力大学电气工程学院,上海市浦东区200090 [2]上海市电力公司经济技术研究院,上海市徐汇区200233 [3]上海大学机电工程与自动化学院,上海市宝山区200444

出　　处：《中国电机工程学报》2023年第17期6614-6627,共14页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51977127)。

摘　　要：现有交直流连锁故障筛选指标和仿真手段不能准确反映交直流耦合作用和直流暂态过程,难以得到准确的连锁故障演化路径。因此,该文提出一种基于机电–电磁混合仿真的交直流连锁故障筛选指标及搜索策略。首先,基于PSD-PSModel构建交直流混联受端电网机电–电磁混合仿真模型;其次,考虑交直流耦合作用与直流控制环节,提出多馈入交直流交互作用因子(multi-infeed AC-DC interaction factor,MIADIF)和连续换相失败时间窗口(continuous commutation failure time window,CCFTW)指标,能够精确反映交流故障对多馈入系统关键状态变量暂态过程的影响;然后,基于筛选指标与混合仿真提出一种交直流连锁故障搜索策略,实现交直流连锁故障的快速、准确、全面搜索;最后,依托上海交直流混联受端电网进行仿真验证和分析,验证所提指标和搜索策略的有效性。The existing AC-DC cascading failures screening indices and simulation methods can not accurately reflect the AC-DC coupling and DC transient process,which makes it difficult to obtain the accurate cascading failures evolution path.Therefore,this paper proposes the novel screening indices and search strategy for AC-DC cascading failures based on hybrid electromechanical-electromagnetic simulation.First,based on PSD-PSModel,the hybrid simulation model of AC-DC hybrid receiver power grid is constructed.Secondly,considering the AC-DC coupling and DC control,the multi-infeed AC-DC interaction factor(MIADIF)and Continuous Commutation Failure time window(CCFTW)are proposed,which can effectively reflect the influence of AC faults on the transient process of key state variables of multi-infeed systems,and improve the accuracy of AC fault search.Then,an search strategy for AC-DC cascading failures is proposed based on the screening indices and hybrid simulation to realize the fast,accurate and comprehensive search of AC-DC cascading failures.Finally,the effectiveness of the proposed indices and search strategy is verified by test simulation based on Shanghai AC-DC hybrid receiving-end power grid.

关 键 词：机电–电磁混合仿真 交直流混联受端电网 连锁故障 多馈入交直流交互作用因子 连续换相失败时间窗口 

分 类 号：TM73[电气工程—电力系统及自动化]