含储能健康运行域与电压安全约束的配电网重构方法  

Distribution Network Reconfiguration Method With Health Operating Area of Energy Storage Life and Voltage Security Constraints

作　　者：方斯顿 黄莘杰 孔赖强 牛涛 陈冠宏 廖瑞金[1] FANG Sidun;HUANG Xinjie;KONG Laiqiang;NIU Tao;CHEN Guanhong;LIAO Ruijin(State Key Laboratory of Power Transmission Equipment Technology(School of Electrical Engineering,Chongqing University),Shapingba District,Chongqing 400044,China)

机构地区：[1]输配电装备技术全国重点实验室(重庆大学电气工程学院),重庆市沙坪坝区400044

出　　处：《中国电机工程学报》2025年第2期577-587,I0015,共12页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家电网有限公司科技项目(5108-202218280A-2-314-XG)。

摘　　要：随着未来各类新能源及用户侧需求互动技术引入配电网,配电网电压安全管理将面临更严峻挑战,带来双向潮流、电压越限等运行问题。在此背景下,该文挖掘网络侧及储能设备的运行灵活性,以限制配电网节点电压波动指数(voltage volatility index,VVI)为目标,提出融合储能能量管理的配电网网络重构方法。同时,为减小储能频繁充放引起的寿命损失,该文基于储能寿命曲面的超空间投影定义储能寿命水平集表征储能健康运行域(health operating area,HOA),并提出水平集凸逼近方法替代非线性储能寿命约束,可在保障储能寿命前提下实现网络重构问题的高效求解。最后,选取IEEE-33节点系统进行分析,验证所提方法的有效性与实用性。With the integration of renewable energy and various demand response strategies into the distribution network,the voltage security of the distribution network will face unprecedented challenges,resulting in the problems such as bi-directional power flow,voltage limit violations,etc.This paper explores the operating flexibility of distribution network and energy storage devices,and proposes a network reconfiguration method combing with energy storage management to limit the voltage volatility index(VVI).At the same time,to reduce the lifetime degradation caused by frequent charging and discharging,this paper defines the life level set of energy storage based on the hyperspace projection of lifetime surface to represent the health operating area(HOA).Then,this paper proposes the convex approximation for the defined life level set to replace the nonlinear energy storage lifetime constraint,which can solve the reconstruction problem efficiently.Finally,the IEEE-33 node system is selected as an example system to analyze and verify the effectiveness and practicability of the proposed method.

关 键 词：储能寿命水平集 电压安全 电压波动指数 健康运行域 配电网重构 超空间投影 

分 类 号：TM73[电气工程—电力系统及自动化]