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| Study of Characteristics of Vibration and Noise for Capacitor Installation in Converter Station |
| Shen Qi1, Ji Shengchang1, Ren Jie1, Wu Peng2, Wang Song3 |
| 1. State Key Laboratory of Electrical Insulation for Power Equipment Xi’an Jiaotong University Xi’an 710049 China2. Jiangsu Electric Power Research Institute Nanjing 210096 China 3. Guangzhou Bureau EHV Power Transmission Company of CSG Guangzhou 510663 China |
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Abstract The filter capacitor installation is one of main noise sources in converter station. With the increasing of HVDC voltage and transmission power, more and more attention is paid to the noise of capacitor installation. In this paper, the capacitor installation in the 220kV filtering field of a converter station is taken as the research object to analyze the vibration characteristics of single capacitor and capacitor stack. Through measuring the noise level around the filtering field, the relationship between the noise and vibration is studied. The results show that the vibration of capacitor installation is generated by the fundamental and harmonic current. It has great difference among the vibration intensity on each surface of single capacitor, especially, the bottom surface has the greatest vibration amplitude. The frequency spectrum of noise has the same frequency components as the vibration. With the noise radiating pattern of filtering field, it can determine that the surrounding of capacitor installation and reactor has the greatest radiation quantity. Finally, a series of noise reduction measures are proposed from vibration reduction, sound insulation and the layout of filter component through the above research results.
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Received: 11 August 2010
Published: 20 March 2014
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2012, Vol. 27 
