提升最大供电能力的配电网馈线联络优化

Optimization Method for Feeder Link of Distribution Network Based on Total Supply Capacity

摘要:

针对城市配电网发展中电源布点及输电走廊紧张问题，提出一种满足 N － 1 约束并提升现有网络供电能力的 馈线联络优化方法。即基于最大供电能力指标，首先明确站内及站间转移路径并精确分析其在各类型故障下负荷转 移作用，以母线 N － 1 故障校验为基础，综合考虑故障前后主变压器、馈线及开关容量约束，通过交替求解最终得到使 现有网络最大供电能力提升最多且建设成本最小的馈线联络，最后通过算例验证了该方法的有效性。

Abstract:

Aiming at the lack of power resource locations and transmission corridors in the development of urban distribution network，a new optimization method for feeder link is presented，which can satisfy N － 1 verification and substantially enhance total supply capacity ( TSC) of distribution network． Firstly，a precise definition of interior transfer path ( ITP) and feeder transfer path ( FTP) is proposed and their effect under various faults is analyzed，which are on the basis of TSC and N － 1 fault verification of bus． And then the constraints of main transformer，feeder and switch capacity before and after the fault are considered synthetically，and the best plan of exterior feeder transfer path ( EFTP) construction is proposed，which can enhance TSC of distribution network and control costs effectively． Finally，the results of calculation examples show that the proposed method is effective．