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| Calculation Method of Noise Level for Capacitor Based on Vibration Signal |
| Cao Tao1, Ji Shengchang1, Wu Peng1, Zhang Jin1, Li Yanming1, Li Xiaolin2, Li Yan2 |
| 1. State Key Laboratory of Electrical Insulation for Power Equipment Xi’an Jiaotong University Xi’an 710049 China2. CSG Technology Research Center Guangzhou 510623 China |
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Abstract The noise of capacitor installation is one of main noise sources at converter station, so it has important significance to study noise level calculation method of a single capacitor for reasonable evaluating the noise level of the whole capacitor installation. First, the generation mechanism of capacitor noise is described in the article, the electric field force between electrodes leads to the vibration of capacitor tank and then the noise is produced and radiated out. Then the relationship between the vibration of capacitor surface and its radiation noise is analyzed, and its calculation formulas are also presented. The vibration and noise measuring system is established in the laboratory, acceleration signal in different conditions of the capacitor surface is measured, and then the data is verified by spectrum analysis. Finally, the A weighting sound pressure level (LPA) is calculated by the formulas in the article, the comparison and analysis between calculation and measurement in hemi-anechoic room validate the presented method.
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Received: 26 December 2008
Published: 04 March 2014
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[1] 尹克宁. 电力电容器噪声的产生机理及其特性分析[J]. 电力电容器, 1995(3): 10-13.
[2] Cox M D, Guan H H. Vibration and audible noise of capacitors subjected to non-sinusoidal waveforms[J]. IEEE Transactions on Power Delivery, 1994, 9(2): 856-862.
[3] 汲胜昌, 寇小括, 李彦明. 换流站中电容器装置噪声水平计算方法的研究[J]. 中国电机工程学报, 2006, 26(3): 112-118.
[4] CIGRE Technical report. HVDC stations audible noise[R]. No.202 W.G 14.26, France, 2002.
[5] 杨一鸣, 章旭雯. 特高压直流换流站设备的降噪措施[J]. 高电压技术, 2006, 32(9): 149-152.
[6] 韩辉, 吴桂芳, 瞿雪弟, 等. 我国±500kV换流站设备可听噪声的测量分析及降噪措施[J]. 电网技术, 2008, 32(2): 38-41.
[7] 胡雨龙, 李兴, 赵明. 高压直流换流站噪声综合治理[J]. 南方电网技术, 2009, 3(1): 49-52.
[8] GB16539—1996: 振速法测定噪声声功率级用于封闭机器的测量[S].
[9] 马宏彬, 何金良, 陈青恒. 500kV单相电力变压器的振动与噪声波形分析[J]. 高电压技术, 2008, 34(8): 1599-1604.
[10] (澳)M. P. 诺顿. 工程噪声和振动分析基础[M]. 盛元生译. 北京: 航空工业出版社, 1993.
[11] 高品贤. 振动、冲击与噪声测试技术[M]. 成都: 西南交通大学出版社, 1992.
[12] 何琳, 朱海潮, 邱小军, 等. 声学理论与工程应用[M]. 北京: 科学出版社, 2006.
[13] ISO3745—2003: Acoustics—determination of sound power levels of noise sources using sound pressure—Precision methods for anechoic and hemi-anechoic rooms[S].
[14] GB6882—86: 声学 噪声学声功率级的测定 消声室和半消声室精密法[S]. |
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2010, Vol. 25 
