An online groundwall and phase-to-phase insulation quality assessment technique for AC-machine stator windings

被引：45

作者：

Lee, Sang Bin ^{[1
]}

Yang, Jinkyu

Younsi, Karim

Bharadwaj, Raj Mohan

机构：

[1] Korea Univ, Dept Elect Engn, Seoul 136701, South Korea

[2] GE Global Res Ctr, Elect Machines & Dr Lab, Moscow 123098, Russia

[3] Honeywell Aerosp AT, Vehicle Hlth Mangement & Decis Technol, Minneapolis, MN 55418 USA

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2006年 / 42卷 / 04期

关键词：

AC machines; capacitance; dissipation factor; fault diagnosis; groundwall (GW) insulation; insulation resistance (IR); insulation testing; online condition monitoring; phase-to-phase (PP) insulation;

D O I：

10.1109/TIA.2006.876077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An online technique for monitoring the condition of the groundwall (GW) and phase-to-phase (PP) insulation for three-phase ac-machine stator windings is proposed in this paper. Insulation-condition indicators such as capacitance, dissipation factor (tan 6), and ac insulation resistance are calculated online based on the differential leakage-current measurements for each phase. A model for a three-phase ac-machine insulation system is derived and analyzed for both offline and online testing. Guidelines for interpreting the measured indicators for determining the: 1) overall condition and 2) significant degradation in the individual GW and PP insulation for each phase of the stator are given based on the analysis. Experimental results on a 15-hp induction motor under intentional GW and PP insulation degradation conditions show that incipient insulation degradation can be detected and classified with high sensitivity.

引用

页码：946 / 957

页数：12

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