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Abstract:
The audible noise radiated from the ac filter capacitors in HVdc converter stations has become a serious environment problem. The purpose of this study is to apply portable digital vibrometer for in-situ surface vibration measurement of capacitors, to survey the vibration isolation and noise reduction effect of double-bottom capacitors which are installed in Feng Xian Converter Station for the first time, and to analyze the vibration and noise characteristics of ac filter capacitors. Portable digital vibrometer is a new technology using eye-safe visible laser and digital signal processing to conduct non-contact on-line vibration velocity measurement. The vibration of capacitor surfaces and steel frames are measured and amended according to the measuring elevation angle. On the other hand, the noise at the points arranged around the rail of filter field is measured by NA28 sound-level meter and 1/3 octave band real-time analyzer. The data and analyses show that the main frequency component in vibration spectrums of capacitor surfaces and steel frames are both 100Hz. And as the double-bottom design being adopted, the vibration at bottom surface decreases obviously. Besides, the noise at the side near the top surfaces of capacitors is much higher than that at other places.
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PROCEEDINGS OF 2012 IEEE INTERNATIONAL CONFERENCE ON CONDITION MONITORING AND DIAGNOSIS (IEEE CMD 2012)
ISSN: 9781467310208
Year: 2012
Page: 886-889
Language: English
Cited Count:
WoS CC Cited Count: 1
SCOPUS Cited Count: 3
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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