花瓣型配电网区域备自投系统控制策略优化研究及应用  

Research and Application of Control Strategy Optimization for Regional Standby Automatic Switching System of Petal-Type Distribution Network

作　　者：冯宝成 金震 侯炜 徐光福 FENG Baocheng;JIN Zhen;HOU Wei;XU Guangfu(NR Engineering Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保工程技术有限公司,江苏南京211102

出　　处：《中国电力》2024年第1期244-254,共11页Electric Power

基　　金：国家电网有限公司科技项目(面向新型电力系统的配电网二次系统规划设计关键技术研究,SGTYHT/21-JS-223)。

摘　　要：针对花瓣型配电网发生故障后,若故障无法被保护可靠隔离时会导致区域备自投系统无法实现“花瓣”恢复供电的问题,基于控制策略对等式的思想,提出一种新型区域备自投系统控制策略。新型控制策略主动进行故障隔离并通过相邻开关房的信息交互,实现“花瓣”的恢复供电及恢复供电后线路过载时各开关房中负荷的智能选切功能,通过信息交互也确保了安全稳定系统切负荷功能的有效性;同时提出了经主保护闭锁的后备保护,解决了“花瓣”内合环运行时后备保护定值整定配合困难和工作量大的技术问题。现场应用结果验证了新型控制策略的有效性,对其他配电网区域备自投系统控制策略的研究具有一定的借鉴意义。In view of the problem that the regional sandby automatic switching system will not be able to realize the“petal”power supply restoration if the fault cannot be reliably isolated by protection,when fault occurs with the petal-type distribution network,a new control strategy for the regional standby automatic switching system is thereby proposed based on the idea of control strategy equation.The new control strategy actively carries out fault isolation and realizes,through information exchange between adjacent switch rooms,the“petal”function of restoring power supply and the intelligent load switching function in each switch room in case of line overload after power supply restoration.The information exchange also ensures the effectiveness of the load switching function of the safety and stability system.At the same time,this paper proposes a backup protection locked by the main protection,which solves the setting and coordination difficulty of the backup protection and the large workload during the operation of the“petal”inner closed loop.The field application has verified the effectiveness of the proposed new control strategy,which has certain reference significance for the research of the control strategy of the regional standby automatic switching system in other distribution networks.

关 键 词：花瓣型配电网 区域备自投系统 控制策略 信息交互 智能选切负荷 

分 类 号：TM762.1[电气工程—电力系统及自动化]