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中国电机工程学报 2006, 26(3) 112-118 DOI:
ISSN: 0258-8013 CN: 11-2107/TM |
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| 电工电机 |
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换流站中电容器装置噪声水平计算方法的研究 |
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汲胜昌 寇小括 李彦明 |
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西安交通大学电气工程学院 西安交通大学电气工程学院 西安交通大学电气工程学院 |
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摘要：
滤波、并联电容器装置的噪声是换流站中噪音来源的主要因素之一，有必要对其计算方法进行研究。文中介绍了电容器振动及噪声产生的机理，即：电极间的电场力将使电容器的外壳振动并最终变为噪声辐射出去；根据电容器在机械力激励作用下其表面的振动响应，计算得到了电容器外壳振动的频响函数以及在电容器流过特定电流时其外壳的振动响应；提出了电容器表面振动速度与其产生的噪声之间的关系，并由此计算了单台电容器在流过含有高次谐波分量的电流时的噪声水平；对一滤波电容器装置的噪声水平进行了计算，结果表明利用文中提出的方法可以有效、方便地计算电容器及电容器装置的噪声水平，为换流站的建设提供参考；文中最后对灵宝换流站中滤波电容器装置的噪声水平进行了测量，并与计算值进行了比较，分析了二者产生差异的原因，验证了文中所提出方法的正确性。 |
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关键词：
换流站
电容器塔
振动
频响函数
噪声
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JI Sheng-chang KOU Xiao-kuo LI Yan-ming |
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Abstract:
The noise of filter and shunt capacitor installation is one of main noise source at converter station, it is necessary to study its calculation method. The mechanism of capacitor vibration and noise is described, the electric field force between electrodes leads to the vibration of capacitor tank and then the noise is produced and radiates out. According to the vibration response of capacitor tank when the capacitor is excited by an impact force, the frequency response function of capacitor tank can be acquired and then the vibration response of capacitor tank can be calculated when the current with high harmonic components flows through the capacitor. The relationship between the vibration velocity of capacitor surface and its noise is presented, and the noise level of single capacitor is calculated when the current with high harmonic components flows through it. The noise level of a filter capacitor installation is calculated, the results show that the capacitor installation noise level can be predicted effectively and conveniently, and it can be taken as reference for construction of converter station. Finally, the noise level of filter capacitor installation at LingBao converter station is measured and compared with calculation value and the reasons leading to their difference are also analyzed. The comparison between measurement and calculation validates the presented method. |
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Keywords:
Converter station
Capacitor stack
Vibration
Frequency response function
Noise
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收稿日期 2005-04-11 修回日期 1900-01-01 网络版发布日期 |
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DOI: |
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基金项目:
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通讯作者: 汲胜昌 |
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作者简介: |
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作者Email: jsc@mail.xjtu.edu.cn |
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| 参考文献： |
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| 本刊中的类似文章 |
| 1．宿志一 范建斌 谷琛 周军.高压直流换流站污秽水平预测方法研究[J]. 中国电机工程学报, 2007,27(13): 1-5 |
| 2．孙海峰 刘磊 崔翔 齐磊 王琦 黎小林.高压直流换流站换流系统宽频建模研究[J]. 中国电机工程学报, 2009,29(12): 24-29 |
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| Copyright by 中国电机工程学报 |
