周士超¹, 刘晓林², 熊展¹, 王旭¹(), 蒋传文¹, 张沈习¹

1.上海交通大学 电力传输与功率变换控制教育部重点实验室,上海 200240
2.国网江苏省电力有限公司苏州供电公司,江苏 苏州 215004

收稿日期:2021-06-30出版日期:2021-12-28发布日期:2021-12-30
通讯作者:王旭E-mail:wangxu1989@sjtu.edu.cn
作者简介:周士超(1992-),男,浙江省温州市人,博士生,从事韧性配电网及电力系统优化运行研究.
基金资助:国家自然科学基金(51907120);上海市青年科技英才扬帆计划(19YF1423600)

Line Hardening and Energy Storage System Configuration Strategies for Resilience Enhancement of a Hybrid AC-DC Distribution System

ZHOU Shichao¹, LIU Xiaolin², XIONG Zhan¹, WANG Xu¹(), JIANG Chuanwen¹, ZHANG Shenxi¹

1. Key Laboratory of Control of Power Transmission and Conversion of the Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
2. State Grid Suzhou Power Supply Company, Suzhou 215004, Jiangsu, China

Received:2021-06-30Online:2021-12-28Published:2021-12-30
Contact:WANG Xu E-mail:wangxu1989@sjtu.edu.cn

摘要/Abstract

摘要： 线路加固和储能配置是灾前规划性防御策略的重要组成部分,可以有效提升交直流混合配电网防灾应急能力.在极端事件频发的背景下提出了考虑线路加固和储能资源配置的交直流混合配电网韧性提升方法,构建两阶段鲁棒优化模型.模型本质上为3层混合整数非线性规划问题,最外层为配电网主动行为,确定线路加固和储能配置策略;中间层为被动行为,确定极端事件发生后的最严重故障集;内层为配电网主动行为,确定灾中配电网故障应对和调度运行策略.基于嵌套列和约束生成算法(Nested Column and Constraint Generation, NC&CG)对3层混合整数线性规划模型进行求解.最后,以9节点直流配网和改进的IEEE-33节点含环交流配网耦合的交直流混合配电网为例进行仿真分析,结果表明所提方法可以有效提升配电网韧性,保障其在极端事件下安全可靠运行.
关键词: 韧性配电网, 交直流混合配电网, 两阶段鲁棒优化, 嵌套的列与约束生成法
Abstract: Line hardening and energy storage configuration are important parts of the pre-disaster planning defense strategy, which can effectively improve the disaster prevention and emergency response capabilities of the hybrid AC-DC distribution system (HDS). Under the background of frequent extreme events, a method to improve the resilience of hybrid AC-DC distribution system considering line hardening and energy storage resource allocation is proposed, and a two-stage robust optimization model is constructed. Essentially, the model is a tri-level mixed integer nonlinear programming problem. The outer level evaluates the active behavior of HDS to determine the line hardening and energy storage system configuration strategies, the middle level determines the worst line failure set after the extreme event occurs, which is the passive behavior of HDS, and the inner level evaluates the active behavior of HDS to determine the emergency response and the operation strategies. Based on the nested column and constraint generation algorithm (nested column and constraint generation, NC&CG), the 3-level mixed integer linear programming model is solved. Finally, a simulation analysis is conducted with a 9-node DC distribution network and an improved IEEE-33 node hybrid AC-DC distribution system coupled with a ring AC distribution network as an example. The results show that the proposed method can effectively improve the resilience of the distribution network and ensure its safe and reliable operation in extreme events.
Key words: resilient distribution system, hybrid AC-DC distribution system, two-stage robust optimization, nested column-and-constraint method


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