中国电机工程学报2023，Vol.43Issue(24)：9481-9495,中插9,16.DOI:10.13334/j.0258-8013.pcsee.221113
配电网N-1最大供电能力的判定定理
Judgment Theorem of N-1 Total Supply Capability for Distribution Network
摘要
Abstract
N-1 total supply capability(TSC)is an important index for evaluating distribution network.This paper proposes and proves the TSC judgment theorems.Theorem 1:each feeder can find a feeder/feeder segment that has a transfer relationship with it,so that the loads of the two are complementary;and the load of backup feeder in N-supply-one-backup mode and asymmetry multiple-section-and-tie mode is the smallest,and the load of feeder segments with backup provided by the same feeder is equal in the symmetry multiple-section-and-tie mode.Theorem 2:after any feeder N-1,all feeders connected with the fault feeder are fully loaded.Theorem 3:redundancy is the smallest.Redundancy is the value of redundancy formula obtained by strict boundary equality constraints.These three theorems are judged from different angles of load characteristics before N-1,load characteristics after N-1 and mathematical model.Above three theorems are proved in this paper,and verified by typical wiring modes in China and distribution network case.Furthermore,an example of the application of the theorem is also given in this paper.Judgment theorem is a basic work of TSC theory system.Compared with existing research,judgment theorems abstract the load distribution characteristics of TSC points,which can easily determine all the system states reaching TSC,provide a direction for optimizing load distribution in planning and operation,and give full play to the power supply capability of distribution network.关键词
N-1最大供电能力/配电网/判定定理/负荷分布Key words
N-1 total supply capability/distribution network/judgment theorem/load distribution分类
信息技术与安全科学引用本文复制引用
肖峻,蔡仲伟..配电网N-1最大供电能力的判定定理[J].中国电机工程学报,2023,43(24):9481-9495,中插9,16.基金项目
国家自然科学基金项目(51877144).Project Supported by National Natural Science Foundation of China(51877144). （51877144）
