考虑故障恢复策略的有源配电网可靠性评估  

Reliability assessment of active distribution networks considering fault recovery strategies

作　　者：吴毓奋 余立志 符史坚 王诒隆 许环湖 丁士凯 吴崇玉 WU Yufen;YU Lizhi;FU Shijian;WANG Yilong;XU Huanhu;DING Shikai;WU Chongyu(Wuzhishan Power Supply Bureau,Hainan Power Grid Co.,Ltd.,Qionghai 571400,China;Electric Vehicle Service Co.,Ltd.,Hainan Power Grid Co.,Ltd.,Qionghai 571400,China)

机构地区：[1]海南电网有限责任公司五指山供电局,海南琼海571400 [2]海南电网有限责任公司电动汽车服务有限公司,海南琼海571400

出　　处：《电力需求侧管理》2025年第2期99-104,共6页Power Demand Side Management

基　　金：南方电网有限公司科技项目(070000KK52210030)。

摘　　要：源网荷协同调度背景下,为实现配电网可靠性的准确评估,提出一种考虑负荷恢复策略的有源配电网可靠性评估方法。首先,基于马尔可夫过程构建元件时变故障率模型以及分布式电源(distributed generator,DG)多状态模型,并基于此提出一种适用于故障重构以及孤岛划分的改进Distflow潮流模型,利用大M法对其进行线性化处理,并引入线性辐射状约束方法,将负荷恢复策略策略建模为混合整数线性规划问题(mixed-integer linear programming,MILP)。其次,对各种故障场景进行停电后果分析,实现有源配电网的可靠性评估。最后,通过IEEE标准算例分析负荷恢复策略对可靠性的影响,结果表明考虑负荷恢复策略能够有效挖掘有源配电网恢复供电能力,进一步提升供电可靠性。In the context of source grid load collaborative scheduling,a reliability evaluation method for active distribution networks considering load recovery strategies is proposed to achieve accurate assessment of distribution network reliability.Firstly,a time-varying failure rate model for components and a multi state model for distributed generators(DG)are constructed based on Markov processes.Based on this,an improved Distflow power flow model suitable for fault reconstruction and islanding partitioning is proposed.The model is linearized using the big M method and a linear radial constraint method is introduced to model the load recovery strategy as a mixed integer linear programming(MILP)problem.Secondly,power outage consequences analysis is conducted for various fault scenarios to achieve reliability assessment of active distribution networks.Finally,the impact of load recovery strategy on reliability was analyzed through IEEE standard examples,and the results showed that considering load recovery strategy can effectively tap into the power supply recovery capability of active distribution networks and further improve power supply reliability.

关 键 词：负荷恢复策略 可靠性评估 网络重构 孤岛划分 线性化 

分 类 号：TM73[电气工程—电力系统及自动化] TP18[自动化与计算机技术—控制理论与控制工程]