摘要
在讨论零序电流法、谐波电流法、注波法和残差增量法选线的优缺点的基础上根据补偿电网的特点和要求提出了复合型选线方式 ,即利用现代计算机技术对配电网的运行状态进行信息融合 ,在线检测其零序电流、谐波、暂态电流 ,并综合分析 ,必要时增值谐波电流 ,以增大检测信号 ,提高选线准确率。
In this paper, the characteristics, requirement and some practical problems of fault line detection in medium voltage power network are analyzed. And some main grounding fault line detection are compared and researched. Based on all above methods, a composite intelligent approach for fault line detection is brought forward. Namely, information combined technology is used for distribution operation status and zero current, harmonic current, transient current are detected online with modern computer technology, then composite comparison and analysis is conducted. If necessary, harmonic current will be increased to enhance the tested signal and improve the accuracy of fault detection.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2004年第2期22-23,共2页
High Voltage Engineering
基金
国家自然科学基金项目 (编号 :5 0 2 0 70 0 1)
关键词
配电网
接地选线方式
供电可靠性
零序电流
电力系统
distribution network fault line detection harmonic increment information combination
