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http://dx.doi.org/10.4313/JKEM.2005.18.10.960

A Study on the Measurement of Small Partial Discharges in a Low-voltage Induction Motor  

Kil, Gyung-Suk (한국해양대학교 전기전자공학부)
Song, Jae-Yong (한국해양대학교 전기전자공학부)
Seo, Hwang-Dong (한국해양대학교 전기전자공학부)
Hwang, Don-Ha (한국전기연구원 전력설비진단연구그룹)
Kang, Dong-Sik (한국전기연구원 전력설비진단연구그룹)
Kim, Yong-Joo (한국전기연구원 융합기술연구단)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.18, no.10, 2005 , pp. 960-964 More about this Journal
Abstract
In this paper, we dealt with a partial discharge(PD) measurement method that has been accepted as an effective and non-destructive technique to estimate insulation performance of low-voltage electric and electronic devices. The PD measurement system Is composed of a coupling network, a low noise amplifier, and associated electronics. h shielded box Is adopted to make a better measurement environment against around noise. A low cut-off frequency of the coupling network estimated by a sinusoidal wave input was 125 kHz (-3 dB). Calibration tests on laboratory set-up have shown that the PD measurement system has a stable sensitivity of 10 mV/pC. In an application test oil a low-voltage three phase Induction motor (5 HP), we could detect 0.53 pC level of partial discharge at the applied voltage of AC 650 $V_{peak}$.
Keywords
Partial discharge; Measurement system; Coupling network; Low noise amplifier; Shielded box;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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