摘要
对配电网最大供电能力(TSC)计算准确性这一基础性问题进行了研究。现有文献的模型法和解析法均基于主变压器互联关系,经N-1安全校验仿真验证发现这些方法均存在一定的误差。为解决这一问题,文中提出了基于馈线互联的TSC模型及其计算方法。该模型能精确描述馈线间的手拉手和多分段多联络的互联方式,完整反映网架信息;计算结果能精确到TSC在馈线上的负荷分布,并在主变压器N-1故障基础上同时计及了馈线N-1故障。通过算例对比了文中方法与现有两种主要方法的结果。N-1安全校验仿真验证表明,文中所得TSC结果是N-1安全边界的临界点,结果准确。
The calculation accuracy of total supply capability （TSC） for power distribution network is investigated. Both the currently used model method and analytical method of TSC calculation for power distribution network as reported in literature are based on interconnections between substation transformers. Their TSC results failed to pass the N -- 1 simulation test, which is a proof that there exist definite errors with these methods. A new model and its calculating method for TSC are proposed based on interconnections between feeders, which takes into account the contingencies of both substation transformers and feeders, plus an overall consideration of the network topology. The calculating method is capable of calculating the load of each feeder when the distribution system is operating at TSC. A case study is presented to compare the proposed method and the two typical methods available. The results of the N--1 simulation show that the TSC result is on the boundary of N- 1 security, which means the proposed feeder-based TSC model is accurate.
出处
《电力系统自动化》
EI
CSCD
北大核心
2013年第17期72-77,共6页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51277129)
国家高技术研究发展计划(863计划)资助项目(2011AA05A117)
教育部新世纪优秀人才支持计划资助项目(NCET-10-0624)~~
关键词
配电网
最大供电能力
主变压器互联
馈线互联
distribution network
total supply capability （ TSC ）
interconnections among substation transformers
interconnections among feeders
作者简介
肖峻（1971-），男，通信作者，教授，主要研究方向：配电系统规划、微网规划设计的研究和应用。E—mail：xiaojun@tju．edu．cn
谷文卓（1988-），男，硕士研究生，主要研究方向：配电系统规划。
贡晓旭（1988-），男，硕士研究生，主要研究方向：配电系统规划。
