南方电网技术2026，Vol.20Issue(7)：11-21,11.DOI:10.13648/j.cnki.issn1674-0629.2026.07.002
基于低刚度隔振的电力电容器本体减振降噪技术
Vibration and Noise Reduction Technology of Power Capacitor Body Based on Low Stiffness Vibration Isolation
摘要
Abstract
With the implementation of China's"dual carbon"strategy,ultra/high-voltage direct current transmission system has been widely applied as an important technical means for new energy consumption.The power capacitors,as key devices for filtering and reactive power compensation,are widely used in ultra/high-voltage direct current transmission systems.However,the low-frequency vibrations and noises of power capacitors pose a serious challenge to the environmental standards of converter stations.To reduce the emission of low-frequency vibrations and noises of power capacitors,the electric field force of electric core under AC voltage is investigated for a start,and then the time/frequency domain distribution characteristics of the electric field force on electric core under both fundamental frequency voltage and higher harmonic voltage are theoretically derived.Based on this,the excitation of the electric core is used to simulate the vibration characteristics of the power capacitor under electric field force.Based on the vibration characteristics of power capacitors under electric field force,a low stiffness vibration isolation system design for noise reduction of power capacitor body is proposed,and the low-frequency vibration isolation performance of the low stiffness vibration isolator is simulated and studied.Furthermore,combined with acoustic finite element analysis,the comparative study is conducted on the low-frequency noise radiation characteristics of power capacitors are compared with and without the low stiffness vibration isolation system embedded.The results show that the proposed low stiffness vibration isolation system can effectively reduce the low-frequency noise emissions at frequencies 100 Hz,200 Hz,600 Hz,700 Hz and 800 Hz in spite of 500 Hz,which indicate that the noise reduction of power capacitor body can be achieved efficiently.关键词
电力电容器/低刚度/隔振/降噪Key words
power capacitor/low-stiffness/vibration isolation/noise reduction分类
信息技术与安全科学引用本文复制引用
李明,黄润鸿,刘阳,张福增,魏承志,郭小易..基于低刚度隔振的电力电容器本体减振降噪技术[J].南方电网技术,2026,20(7):11-21,11.基金项目
国家重点研发计划资助项目(2016YFB0901004) （2016YFB0901004）
《中国制造2025》项目 （）
中国南方电网有限责任公司重点科技项目(CSGTRC-K163004) （CSGTRC-K163004）
南方电网科学研究院研发专项项目(SEPRI-K22B059). Supported by the National Key Research and Development Program of China(2016YFB0901004) （SEPRI-K22B059）
the"Made in China 2025"Project （）
the Key Science and Technology Project of China Southern Power Grid Co.,Ltd.(CSGTRC-K163004) （CSGTRC-K163004）
the Research&Development Special Project of Electric Power Research Institute,CSG(SEPRI-K22B059). （SEPRI-K22B059）
