摘要
综述了XLPE电力电缆局部放电检测技术的研究现状,重点介绍了用于电缆的各种局部放电检测技术和定位方法。根据检测原理及选用传感器的不同,目前电缆局部放电的检测方法大致有声发射法、电容耦合法、电感耦合法、超高频法和方向耦合法等。对于电缆而言,局部放电源定位具有重要的实际意义,笔者在讨论电缆信号传输模型的基础上,给出了目前主要的定位方法,包括时域反射法及多种改进技术。根据各种方法优缺点的综合比较,对各种方法的适用性分别进行了论述,同时结合电缆局部放电检测的实际需求,对未来的研究方向进行了展望。
This paper overviews the partial discharge detection techniques and partial discharge source location for cross-linked polyethene （XLPE） power cable. According to different detection principles and chosen sensors, current methods for XLPE power cable partial discharge detection are classified into acoustic emission, capacitive coupling, inductive coupling, ultra high frequency and directional coupling, etc. As the significant importance of source location to power cable, widely used location methods including time domain reflectometry and improved techniques, are presented on the basis of transmission line model. The characteristics and applications of different detection methods are also compared and briefly analyzed respectively. In addition, the tendency of research is summarized and forecasted.
出处
《高压电器》
CAS
CSCD
北大核心
2009年第3期56-60,共5页
High Voltage Apparatus
