现代电力2025，Vol.42Issue(2)：281-292,12.DOI:10.19725/j.cnki.1007-2322.2023.0022
计及运行风险的配电网故障后供电恢复决策及广义动态孤岛划分
Power Restoration Decision and Generalized Dynamic Islanding Strategy After Distribution Network Failure Considering Operational Risks
摘要
Abstract
A reasonable islanding operation strategy is of great significance for power restoration as well as system resilience enhancement when major failures occur in the distribution net-work.Therefore,the problem of utilizing traditional contact lines and emerging distributed generation(abbr.DG)to restore integrated power to outage areas in the distribution network was profoundly studied.Firstly,the integrated power restoration problem was uniformly simplified as a generalized DG-based islanding problem by equating the contact lines to virtual DGs.Secondly,to adequately quantify the risk of islanding operation during failure hours,the islanding operation risk indicators were defined from the perspectives of power balance and voltage stability,and a dynamic constraint method for island-ing operation risk was proposed based on the opportunity con-strained optimization model.Subsequently,a generalized dy-namic islanding strategy for distribution networks considering operational risks was proposed.This strategy can dynamically adjust the island range based on risk factors such as DG output,load timing changes,and node voltage levels,maximizing the utilization of DG resources during fault periods while ensuring the stability and sustainability of island operation.In allusion to the problem of high difficulty in solving the dynamic islanding strategy,the improved branch-and-bound method in combina-tion with the heuristic algorithm was used to solve and dynam-ically modify the islanding strategy to ensure the rationality and timeliness of recovery decisions under emergencies.Finally,simulation experiments and analysis were carried out based on a 40 node distribution network example to verify the effective-ness of the proposed method.关键词
配电网/供电恢复/广义孤岛/动态孤岛划分/运行风险Key words
distribution network/power supply recovery/generalized islands/dynamic islanding/operational risk分类
信息技术与安全科学引用本文复制引用
李振坤,张天翼,徐冰雁,赵向阳,叶影,符杨..计及运行风险的配电网故障后供电恢复决策及广义动态孤岛划分[J].现代电力,2025,42(2):281-292,12.基金项目
国家电网有限公司总部科技项目"含大规模分布式电源和多微网的配电系统柔性控制技术研究及应用"(52093220000H).Science Project of the Head of State Grid Corporation of China"Research and Application of Flexible Control Technology for Distribution Systems with Large-Scale Distributed Generation and Multiple Microgrids"(52093220000H). （52093220000H）
