换流站交流滤波电容器振动与噪声研究综述

发布时间：2018-04-05 09:49

本文选题：滤波电容器　切入点：电力电容器　出处：《高电压技术》2016年04期

【摘要】：在高电压、大容量的直流输电系统中,交流侧谐波电流大,滤波电容器数量多,使得交流滤波电容器装置成为换流站可听噪声的主要来源之一。对近年来电容器振动与噪声研究进行了总结。通过分析排除了电容器内部的磁力作用和电容器心子与外壳间的电磁力影响,得出内部静电力是电容器振动与噪声的激励源。从功能转换的角度推导得出电容器极板受力与电压平方成正比。根据电容器振动与噪声特性及产生机理,分析了影响电容器振动噪声的主要因素,包括谐波频率与相位、浸渍剂、压紧系数和安装方式等。最后,论述了目前的噪声预估方法,并介绍了几种主要的降噪措施。综上所述,电容器内部的振动与传递过程是目前其减振降噪研究的重要内容,对电容器装置噪声的预估和降噪措施的研制均具有指导意义。
[Abstract]:In the high voltage and large capacity DC transmission system, the AC side harmonic current is large and the number of filter capacitors is large, which makes the AC filter capacitor device become one of the main sources of audible noise in converter stations.The research on the vibration and noise of capacitors in recent years is summarized.By analyzing and eliminating the influence of the magnetic force inside the capacitor and the electromagnetic force between the core and the shell of the capacitor, it is concluded that the internal static power is the source of the vibration and noise of the capacitor.From the angle of function conversion, it is deduced that the force of capacitor plate is proportional to the square of voltage.According to the vibration and noise characteristics of capacitors and their mechanism, the main factors affecting the vibration and noise of capacitors are analyzed, including harmonic frequency and phase, impregnating agent, compaction coefficient and installation mode, etc.Finally, the present noise prediction methods are discussed, and several main noise reduction measures are introduced.To sum up, the internal vibration and transmission process of capacitors is an important content in the research of damping and noise reduction, which is of guiding significance to the prediction of noise in capacitor devices and the development of noise reduction measures.
【作者单位】：西安交通大学电力设备电气绝缘国家重点实验室;江西省电力公司;
【基金】：国家自然科学基金(51377130;51507128)~~
【分类号】：TM53;TM721.1

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