Research on Thermal Stability Performance of Power Capacitor Under Power Frequency and Harmonic Condition

WU Yongli; GUO Jiang; FENG Chunlin; MA Yue; HUANG Youxiang; ZHU Qingdong; LIN Feng

doi:10.13296/j.1001-1609.hva.2025.01.016

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Research on Thermal Stability Performance of Power Capacitor Under Power Frequency and Harmonic Condition

Research & Analysis | 更新时间：2025-04-26

- Research on Thermal Stability Performance of Power Capacitor Under Power Frequency and Harmonic Condition
- High Voltage Apparatus Vol. 61, Issue 1, Pages: 136-144(2025)
- 作者机构：
  
  1.桂林电力电容器有限责任公司，广西　桂林　 541004
  2.中国电力科学研究院武汉分院电网环境保护国家重点实验室，武汉　 430074
  3.国家电网有限公司，北京　 100031
  4.国网山东省电力公司电力科学研究院，济南　 250001
- 作者简介：
- 基金信息：
  
  Science and Technology Project of State Grid Corporation of China(5200-201955076A-0-0-00)
- DOI：10.13296/j.1001-1609.hva.2025.01.016
  CLC：
- Received：09 July 2024，
  
  Revised：13 September 2024，
  
  Published：16 January 2025
- 稿件说明：
移动端阅览
WU Yongli, GUO Jiang, FENG Chunlin, et al. Research on Thermal Stability Performance of Power Capacitor Under Power Frequency and Harmonic Condition[J]. High voltage apparatus, 2025, 61(1): 136-144.
DOI：

WU Yongli, GUO Jiang, FENG Chunlin, et al. Research on Thermal Stability Performance of Power Capacitor Under Power Frequency and Harmonic Condition[J]. High voltage apparatus, 2025, 61(1): 136-144. DOI： 10.13296/j.1001-1609.hva.2025.01.016.

摘要

电力电容器在工频交流下的热稳定性能研究较多，但在工频叠加谐波情况下的热稳定性能目前还没有相关报道。为研究电力电容器在实际运行谐波环境下的温升情况，通过分析电容器损耗功率与谐波频率的关系，搭建谐波加载电路，在工程给定的谐波电压、谐波电流条件下和根据标准确定的电容器额定电压下的热稳定试验对比，以及工频叠加单次谐波电压下的热稳定性试验研究，得出当系统谐波含量大到一定程度时，电容器按标准选取的额定电压下的热效应不能覆盖实际运行谐波下的热效应，还需要考虑

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时的热效应核算。

Abstract

There are many researches on thermal stability of power capacitors under AC power frequency

but at present there is no related report on the thermal stability performance under superposition of power frequency and harmonics. For studying the temperature rise of

power capacitor in actual operating harmonic environment

the harmonic loading circuit is set up by analyzing the relationship between the power loss and the harmonic frequency. It is concluded at given harmonic voltage and harmonic current by the project

the comparison of thermal stability test at rated voltage of the capacitor specified by the standard as well as the thermal stability test at the power frequency with single harmonic voltage that when the harmonic contents of the system reaches a certain extent

the thermal effect of the power capacitor at the rated voltage taken as per the standard can not cover that at the actual operation harmonics

and the thermal effect of

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needs to be considered.

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