IDENTIFYING GROUND-FAULT LOCATIONS Using adjustable speed drives in high-resistance grounded systems

被引：8
|
作者：
Wei, Lixiang [1 ]
Liu, Zhijun [1 ]
Kerkman, Russell J. [1 ]
Skibinski, Gary L. [1 ]
机构：
[1] Rockwell Automat, Mequon, WI USA
来源：
IEEE INDUSTRY APPLICATIONS MAGAZINE | 2013年 / 19卷 / 02期
关键词：
Circuit faults; Variable speed drives; Voltage measurement; Fault diagnosis; Resistance; Grounding; Band pass filters; LOW-VOLTAGE;
D O I：
10.1109/MIAS.2012.2215637
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
One of the more difficult problems to solve in industrial plants is how to identify and eliminate ground faults in a high-resistance ground (HRG) system. This is because ground-fault conditions in these systems do not draw enough current to reliably trigger fault current sensors in the drive. This article develops an approach to identify the ground-fault location in HRG systems using voltage sensing, rather than current sensing techniques, inside an adjustable speed drive (ASD). This approach consists of a simple analog circuit and digital signal processing technique to detect a fault condition, as well as to identify the fault location, be it on the load motor side, inside the ASD, or ac line side. The use of this ground-fault identification method is also extended and discussed for application to multiple drive lineups. © 1975-2012 IEEE.
引用
收藏
页码：47 / 55
页数：9
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