电网技术2016，Vol.40Issue(8)：2430-2436,7.DOI:10.13335/j.1000-3673.pst.2016.08.026
一种计及主变可载性约束的三阶段配电网供电能力实时评估方法
A Three Stage Real-Time Evaluation Method for Power Supply Capability of Distribution Network With Constraint of Transformer Overload Capacity
摘要
Abstract
To solve the problem that existing methods for power supply capability evaluation of distribution network do not consider transformer overload capacity,a transformer overload constraint model is proposed.The model considers constraints of winding hot-spot temperature,failure rate and economy,and inspects capacity-increasing coefficient via rating risk severity level.Besides,existing methods can't adapt to complex scenes,so this paper proposes different evaluation principles.Based on above two points,a new evaluation method with transformer overload capacity is proposed.The method includes three stages:pre-evaluation,constraint analysis and verification evaluation,and final results are obtained with repeated power flow method.Simulation results show that the method takes transformer overload capacity into account.Maximum power supply capability has obvious time-dependent feature under overload condition and its percentage increase of shot-time emergency loading is bigger than that of normal cyclic loading.The method can provide an assistant decision-making basis for different scenes.关键词
变压器/可载性/三阶段/配电网/供电能力评估Key words
transformer/overload capability/three stage/distribution network/evaluation of power supply capability分类
信息技术与安全科学引用本文复制引用
张行,何迪,章禹,郭创新,李大虎,孙建波..一种计及主变可载性约束的三阶段配电网供电能力实时评估方法[J].电网技术,2016,40(8):2430-2436,7.基金项目
国家重点基础研究计划(2013CB228206) （2013CB228206）
国家自然科学基金资助项目(51177143) （51177143）
浙江省自然科学基金资助项目(LZ14E070001).Project Supported by the National Basic Research Program of China (973 Program) (2013CB228206) （LZ14E070001）
Project Supported by National Natural Science Foundation of China (NSFC) (51177143) （NSFC）
Project Supported by Zhejiang Provincial Natural Science Foundation (LZ14E070001). （LZ14E070001）
