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电力与能源
430 2024 年 8 月
DOI:10.11973/dlyny202404006
考虑节点响应故障概率的 10 kV 双环网
自愈系统节点优化配置
史 媛
(国网上海市电力公司市北供电公司,上海 200072)
摘 要:10 kV 双环网自愈系统的配置大大提升了配电网的自愈能力和供电可靠性,但配电网络中节点数量
的增加也使得节点动作故障风险增大,节点数量过少不利于双环网供电效率最大化,节点数量过多则降低供
电网络整体可靠性。基于对单个节点响应故障概率的研究,引入事件概率模型,建立兼顾单因风险和迭代风
险的双环网配电站的节点响应故障风险概率模型;基于不同系统运行方式,建立了双环网自愈系统中配电站
的可靠性增量模型;在考虑响应故障风险概率和可靠性双叠加的基础上,引入系统容量、负荷平衡等因素,建
立了配电网自愈系统节点配置优化模型。
关键词:配电网自愈系统;响应故障风险;可靠性增量;节点优化配置;系统容量;负荷平衡
作者简介:史 媛(1991—),女,硕士,工程师,主要从事配电网运行优化工作。
中图分类号:TM76 文献标志码:A 文章编号:2095-1256(2024)04-0430-05
Optimization of Node Configuration in 10 kV Dual-Ring Self-Healing Distribution
Networks Considering Node Response Fault Probability
SHI Yuan
(State Grid Shibei Power Supply Company,SMEPC,Shanghai 200072,China)
Abstract:The configuration of 10 kV dual-ring self-healing systems significantly enhances the self-healing capa⁃
bility and supply reliability of distribution networks. However, the increasing number of nodes in distribution net⁃
works also increases the risk of node operation faults. Too few nodes hinder the maximization of supply efficiency
in dual-ring networks, while too many nodes decrease the overall reliability of the supply network. Based on re⁃
search into the fault probability response of individual nodes, this paper introduces an event probability model and
establishes a dual-ring distribution station node response fault risk probability model that considers single-factor
and iterative risks. Furthermore, based on different system operation modes, a reliability increment model for dis⁃
tribution stations in dual-ring self-healing systems is developed. Building upon the additive combination of re⁃
sponse fault risk probability and reliability, factors such as system capacity and load balance are introduced to es⁃
tablish a node configuration optimization model for distribution network self-healing systems.
Key words:distribution network self-healing system,response fault risk,reliability increment,node optimiza⁃
tion configuration,system capacity,load balance
近年来,国网上海市电力公司立足“世界观察 双环供电网络中电站数量的增加,由于节点本身
中国电力的窗口”高标定位,全面推动电网韧性升 可能存在响应失败而产生拒动或误动的风险,响
级,积极落实配电网升级改造三年行动,加大“钻 应故障风险随着节点数量的增加而增大,使得供
石型”配电网和配电自动化推广力度,全力打造一 电网架整体可靠性下降。如何平衡双环网自愈系
流城市配电网 [1-2] 。针对配电侧自愈系统的网架 统网架的可靠性提升和节点数量增加带来的节点
构架问题,一方面配电站纳入双环网供电结构,这 响应故障风险增大,是当前规划建设配电侧自愈
[3]
将带来明显的供电可靠性提升 ;另一方面,随着 供电网络的重要方向。

