含分布式储能系统的交直流配电网动态故障恢复策略  

A dynamic fault recovery strategy for an AC/DC distribution network with distributed energy storage system

作　　者：李英量 孙楠 王德明 郭飞燕 李飞 LI Yingliang;SUN Nan;WANG Deming;GUO Feiyan;LI Fei(School of Electronic Engineering,Xi’an Shiyou University,Xi’an 710065,China;Shaanxi Railway Institute,Weinan 714000,China)

机构地区：[1]西安石油大学电子工程学院,陕西西安710065 [2]陕西铁路工程职业技术学院,陕西渭南714000

出　　处：《电力系统保护与控制》2024年第18期179-187,共9页Power System Protection and Control

基　　金：陕西省自然科学基础研究计划项目资助(2024JC-YBMS-405);西安市科技计划项目资助(2024JH-GXFW-0165);国家重点研发计划项目资助(2023YFC2810902);西安石油大学研究生创新基金项目资助(YCX2413088)。

摘　　要：在多故障场景下,考虑到故障抢修时间差异、分布式电源出力和负荷需求时变性对交直流配电网故障恢复策略的影响,提出了一种面向多故障场景的交直流配电网动态故障恢复策略。对含分布式储能系统的交直流配电网,首先采用分阶段孤岛划分策略以实现对失电区的紧急供电。随后,以故障恢复综合满意度指标的最大化为目标,综合考虑了交直流潮流约束、节点电压约束、支路载流量约束和电能约束等多重约束条件。同时,结合故障抢修的进度以及分布式电源出力、负荷需求等因素,确定最优的故障恢复策略。最后,通过对IEEE33节点系统改造的交直流配电网模型进行算例分析。结果表明,所提出的动态故障恢复策略有效解决了交直流配电网的故障问题。并能根据实时信息对故障恢复策略进行灵活调整,保证了交直流配电网运行的可靠性和安全性。When there are multiple faults,then considering the impact of differences in fault repair times,and the variability in distributed power generation and dynamic changes in load demands on the fault recovery strategy for AC/DC distribution networks,this paper proposes a dynamic fault recovery strategy tailored to such scenarios.For AC/DC distribution networks with distributed energy storage systems,an emergency power supply is achieved through a staged islanding strategy for blackout areas.Subsequently,with the maximization of the comprehensive satisfaction index for fault recovery as the objective,it comprehensively addresses multiple constraints,including AC/DC power flow,node voltage,branch current,and energy constraints.Concurrently,the optimal fault recovery strategy is determined by integrating the progress of fault repairs with factors such as distributed power generation and load demands.Finally,a case study is carried out on a modified IEEE 33-bus system representing an AC/DC distribution network.The results demonstrate the effectiveness of the proposed dynamic fault recovery strategy in resolving faults.The strategy allows for flexible adjustments to the fault recovery approach based on real-time information,ensuring the reliability and safety of the AC/DC distribution network operation.

关 键 词：交直流配电网 故障恢复 动态策略 交直流潮流 综合满意度 

分 类 号：TM721.3[电气工程—电力系统及自动化]