电力系统自动化2017，Vol.41Issue(3)：39-45,7.DOI:10.7500/AEPS20160710004
防止输电断面连锁过载的快速控制算法
Fast Control Algorithm for Preventing Cascading Overload on Transmission Section
牟颖 1张保会 1薄志谦2
作者信息
- 1. 西安交通大学电气工程学院,陕西省西安市710049
- 2. 国家电网许继集团有限公司,河南省许昌市461000
- 折叠
摘要
Abstract
If the trip of overload branch should cause cascading overload inside the corresponding transmission section,rapid overload control should be executed within the time delay of overload protection.The protected object is the whole transmission section,and it is ensured that no branch in the section will be overloaded while power flow of the whole section is decreased.The calculation of integrative sensitivity either neglects normal branches,or is just the algebraic sum of sensitivity of the overload branch and branches near the limit,which cannot reflect the node's capability to alleviate overload on the whole section more reasonably.In addition,prioritization of control nodes,selection of node pairs and constraint conditions of the adjustment amount are still imperfect.Thus,in inheriting the general idea of integrative sensitivity algorithm and making up for the defects,this paper holds that integrative sensitivity is the weighted sum of sensitivity of overload branches and normal branches.Then the classification and operation sequence of control nodes should be determined.And the sensitivity of node to branch and integrative sensitivity are all used to prioritize control nodes.In addition,the principle of ensuring safety of the whole section is added to the selection of node pairs and the power limit of the slack generator is considered.Reverse constraints are added to keep power flow from increasing reversely with too much adjustment.The rapidity and validity of the proposed algorithm is verified by calculation results of a certain actual system.关键词
输电断面/综合灵敏度/断面安全控制/调整量约束Key words
transmission section/integrative sensitivity/security control of section/adjustment quantity constraints引用本文复制引用
牟颖,张保会,薄志谦..防止输电断面连锁过载的快速控制算法[J].电力系统自动化,2017,41(3):39-45,7.
