山东电力技术2024，Vol.51Issue(4)：56-63,8.DOI:10.20097/j.cnki.issn1007-9904.2024.04.006
连续换相失败对大电网功角稳定影响分析
Analysis of Successive Commutation Failure Influence on Power Angle Stability of Large Power Grid
摘要
Abstract
Successive commutation failure is a serious threat to the safe operation of large AC/DC power grid,which may lead to cascading failures across regional power grids.The influence of successive commutation failures on the power angle stability of AC systems was studied by combining theoretical analysis and actual power grid simulation.Firstly,from the perspective of reactive power exchange in AC/DC systems,the cause of successive commutation failure was analyzed.Then,taking a simplified three zone AC/DC interconnected system as an example,the variation of the relative power angle of the synchronous generator in the AC system during the successive commutation failure process was analyzed based on the equal-area criterion.Finally,simulation analysis was conducted on the power angle changes of the sending-side power grid and the receiving-side power grid when the successive commutation failure occurs at the Shaoxing converter station.Simulation results show that successive commutation failure can cause multiple energy shocks on the AC system in a short period of time.Long-term successive commutation failure is able to result in power angle instability of the AC system.关键词
连续换相失败/功角稳定/等面积法则/连锁故障Key words
successive commutation failure/power angle stability/equal-area criterion/cascading failure分类
信息技术与安全科学引用本文复制引用
朱元振,马欢,姜力扬,周宁,蒋哲..连续换相失败对大电网功角稳定影响分析[J].山东电力技术,2024,51(4):56-63,8.基金项目
国家自然科学基金项目(52177096). National Natural Science Foundation of China(52177096). （52177096）
