电力系统及其自动化学报2017，Vol.29Issue(4)：36-42,7.DOI:10.3969/j.issn.1003-8930.2017.04.006
多支路同时断开时潮流转移危险线路快速搜索
Fast Search of Dangerous Lines in Power Flow Transferring Resulting from Simultaneous Multi-branch Removal
徐岩 1郅静1
作者信息
- 1. 华北电力大学新能源电力系统国家重点实验室,保定071000
- 折叠
摘要
Abstract
A fast search method for the dangerous lines in power flow transferring resulting from simultaneous multibranch removal was put forward to avoid the chain tripping accident caused by power flow transferring.The equal-phase parallel lines in each broken branch could be determined by matrix operation and equal-phase theory,thus the line set affected by branch removal was obtained by path search.The power increment of each line in the set was estimated by direct-current power flow method,and the risk index of power flow transferring was defined comprehensively considering the power increment and thermal stability power limit,by which the dangerous lines with overload risk in power flow transferring were obtained after screening.Moreover,the importance of equal-phase parallel lines in power flow transferring was proved by simulation examples.The difficulty in the computation of power increment in simultaneous multibranch removal was overcome,and the traditional method which only judged the degree of line risk by power increment was improved.Finally,the proposed method was verified in an IEEE 39-node system.关键词
电力系统/潮流转移/多支路同时断开/等相角并行输电线路/直流潮流法Key words
power system/power flow transferring/simultaneous multi-branch removal/equal-phase parallel lines/direct-current power flow method分类
信息技术与安全科学引用本文复制引用
徐岩,郅静..多支路同时断开时潮流转移危险线路快速搜索[J].电力系统及其自动化学报,2017,29(4):36-42,7.
