基于断线分布因子的连锁故障潮流计算及脆弱线路辨识
Cascading fault power flow calculation and fragile line identification based on line break distribution factor
郝广涛 1张逸 2闻辉 1林清华 1刁浩然3
作者信息
- 1. 莆田学院机电与信息工程学院,福建莆田 351100
- 2. 福州大学电气工程与自动化学院,福建 福州 350108
- 3. 中国南方电网调度控制中心,广东 广州 510623
- 折叠
摘要
针对传统连锁故障潮流无法在线计算及实时辨识电网脆弱线路的问题,提出了在广域量测环境下基于断线分布因子的连锁故障潮流计算及脆弱线路辨识方法.首先,给出了电网注入转移因子在广域量测环境下的计算方法;其次,推导了注入转移因子与功率转移分布因子、断线分布因子的关系以实现断线分布因子的实时求解;再次,以断线分布因子为基础,建立了连锁断线潮流的计算模型,并提出了脆弱线路的度量指标;最后,以IEEE14节点系统为例进行验证,结果表明所提方法是有效的.
Abstract
Aiming at the problem that the traditional cascading fault power flow cannot calculate online and identify the fragile line of power grid in real time,a cascading fault power flow calculation and fragile line identification method based on line break distribution factor is proposed in the wide-area measurement environment.Firstly,the calculation method of grid injection shift factor in wide area measurement environment is given.Secondly,the relationship between injection shift factor,power transfer distribution factor and line break distribution factor is deduced to realize real-time solution of line break distribution factor.Thirdly,based on line break distribution factor,the calculation model of interlocking broken line power flow is established,and the measurement index of fragile line is proposed.Finally,the IEEE14 bus system is taken as an example to verify the effectiveness of the proposed method.
关键词
广域量测/脆弱线路/注入转移因子/功率转移分布因子/断线分布因子Key words
wide-area measurement/fragile line/injection shift factor/power transfer distribution factor/line break distribution factor引用本文复制引用
出版年
2024
NETL
NSTL
万方数据