摘要
通过对小电流接地系统单相接地故障特征现象的分析,指出单相接地故障对变电设备和配网的危害,并以其故障特征作为判断依据,寻找故障点,提出预防和故障处理办法,减少单相接地故障的发生,确保配电网安全、经济和稳定运行。
ussed, which provides reference for similar projects. Because water-saving reconstruction project of irriga- tion district includes many complex contents, which have characteristics of many dots, wide area, long line, and mixed with old installations, it＇ s hard to distinguish its project cost and benefit. All of the reasons cause difficulty in eco- nomic evaluation. Taking reconstruction project of a certain large--sized irrigation district for example, the method of calculation and analysis about cost and benefit is disc
出处
《广东水利电力职业技术学院学报》
2013年第3期29-32,共4页
Journal of Guangdong Polytechnic of Water Resources and Electric Engineering
关键词
电力系统
小电流接地系统
单相接地
判断处理
irrigation scheme
irrigation district
reconstruction
economic evaluation
