摘要
在基于节点导纳矩阵的故障计算方法中,由于部分线路间零序互感的存在,使得零序节点导纳矩阵的形成、尤其是互感线路故障情况下零序节点导纳矩阵的形成复杂化。该文对电网中多回互感线路及存在部分互感情况下的等值处理方法进行了统一的数学分析,提出了简便的算法,并在此基础上,对互感线路故障情况下增设节点后故障线路的分解进行了研究,提出了通用的分解规则。该算法和规则对电网中任意重互感线路、任意复杂部分互感结构和互感线路上任意重故障都具有灵活的处理能力,有助于推进电力系统故障计算软件的实用化。
In the power system fault calculation method based on node admittance matrix Y, the construction of Y is complicated because of the existence of lines with mutual inductance, especially when there are faults on them. This paper presents a simple algorithm to treat multiple mutual lines as well as segmental mutual lines based on mathematical analysis. And a universal rule as the guidance in the separation of segmental mutual lines under fault condition is proposed. The algorithm and rule presented make the fault calculation method flexible enough to meet the requirements of large power system with multiple mutual lines, multiple segmental mutual lines, and multiple faults on mutual lines. And the practicability of fault calculation software can be greatly promoted.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第7期58-61,共4页
Proceedings of the CSEE
基金
教育部高等学校优秀青年教师教育与科研基金项目。
