National Key R D Program on Smart Grid   Integrated Sensing  Storage  and Computing Micro Nano Sensor Devices and Key Technologies for Multi dimensional Fusion Perception of Main Substation Equipment Status  2024ZD0803400  Analysis and diagnosis of the causes of unbalanced voltage protection action in 10kV parallel capacitor devices

LiKun; Zhang Die

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National Key R D Program on Smart Grid Integrated Sensing Storage and Computing Micro Nano Sensor Devices and Key Technologies for Multi dimensional Fusion Perception of Main Substation Equipment Status 2024ZD0803400 Analysis and diagnosis of the causes of unbalanced voltage protection action in 10kV parallel capacitor devices

更新时间：2026-10-18

- National Key R D Program on Smart Grid Integrated Sensing Storage and Computing Micro Nano Sensor Devices and Key Technologies for Multi dimensional Fusion Perception of Main Substation Equipment Status 2024ZD0803400 Analysis and diagnosis of the causes of unbalanced voltage protection action in 10kV parallel capacitor devices
- Vol. 29, Issue 7, Pages: 9--(2026)
- 作者机构：
  
  1. 贵州电网公司电力科学研究院
  2. 贵州电网有限责任公司安顺供电局
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2026
- 稿件说明：
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李堃,张蝶.10 kV并联电容器不平衡电压保护动作分析[J].电力大数据,2026,29(07):9-10.

LiKun, Zhang Die. National Key R D Program on Smart Grid Integrated Sensing Storage and Computing Micro Nano Sensor Devices and Key Technologies for Multi dimensional Fusion Perception of Main Substation Equipment Status 2024ZD0803400 Analysis and diagnosis of the causes of unbalanced voltage protection action in 10kV parallel capacitor devices[J]. 2026, 29(7): 9--.
李堃,张蝶.10 kV并联电容器不平衡电压保护动作分析[J].电力大数据,2026,29(07):9-10. DOI：

LiKun, Zhang Die. National Key R D Program on Smart Grid Integrated Sensing Storage and Computing Micro Nano Sensor Devices and Key Technologies for Multi dimensional Fusion Perception of Main Substation Equipment Status 2024ZD0803400 Analysis and diagnosis of the causes of unbalanced voltage protection action in 10kV parallel capacitor devices[J]. 2026, 29(7): 9--. DOI：

摘要

并联电容器主要作用是通过提供容性无功功率来提高功率因数

从而降低损耗提升系统电压。针对一起10kV并联电容器装置在投切过程中发生三相不平衡电压保护动作的事件

通过试验诊断和理论计算

综合分析是由于现场电容器中性点和放电线圈中性点未进行短接导致保护动作。并利用PSCAD仿真软件对电容器和放电线圈中性点短接和未短接工况下的不平衡电压值进行仿真计算

得到未短接工况下仿真计算结果和保护录波数据基本一致

复现了保护动作的过程

同时仿真得出在短接情况下不会引起保护动作

并基于仿真计算结果最终给出相关的结论及建议。

Abstract

The main function of parallel capacitors is to improve power factor by providing capacitive reactive power

thereby reducing losses and increasing system voltage. In response to an incident of three-phase unbalanced voltage protection action during the switching process of a 10kV parallel capacitor device

through experimental diagnosis and theoretical calculation

it is comprehensively analyzed that the protection action was caused by the lack of short circuiting between the neutral point of the on-site capacitor and the neutral point of the discharge coil. And PSCAD was used to simulate and calculate the unbalanced voltage values of capacitors and discharge coils under neutral point short circuiting and non short circuiting conditions. The simulation results under non short circuiting conditions were basically consistent with the protection recording data

reproducing the process of protection action. At the same time

it was simulated that no protection action would be caused under short circuiting conditions. Based on the simulation results

relevant conclusions and suggestions were finally given.

关键词

Keywords

references

杨红权,高竣,邱炜,等.10 kV 并联电容器组不平衡保护动作诊断及分析[J].电力电容器与无功补偿,2024,45(2):27-31.

张建军,李雪,李岩. 高压并联电容器装置运行可靠性的运维改进措施[J]. 电力电容器与无功补偿,2018,39(2):1?5.

张智光,倪秋龙,廖培,等. 计及新能源消纳的地区电网无功电压优化控制策略[J]. 浙江电力,2023,42(1):46?53.

杨昌兴,王明毫.并联电容器装置设计及应用的若干议题[J].电力电容器与无功补偿,2015,36(3):1?9.

倪学峰,盛国钊,严飞,等.110?500 kV变电站电容器装置典型规范应用说明[J].电力设备,2007,8(6):28?31.

杨旗,谢百明,陈沛龙,等.变电站双星形并联电容器组电容量快速测量方法[J].电力大数据,2020,23(07):54-61.

郑隆,申涛. 一起集合式电容器差压保护动作后解体分析[J]. 电工电气,2018(3):47?49.

毛磊,刘旭,颜玮,等.10 kV并联电容器组的跳闸分析与计算[J].电力电容器与无功补偿,2018,39(02):49-53+71.

张宗喜.220 kV变压器低压侧10 kV无功补偿装置电容器绝缘故障分析[J].电力电容器与无功补偿,2024,45(02):38-43.

廖斌,梁晨,陈松,等.一起35kV并联电容器装置故障原因分析[J].电力电容器与无功补偿,2022,43(05):1-6.

何建龙,张少江,郑歆,等. 放电线圈引起电容器组不平衡电流保护动作分析[J]. 电力电容器与无功补偿,2020,41(2):8?12.

覃智贤. 放电线圈引起电容器电压保护动作分析[J]. 电力电容器与无功补偿,2018,39(6): 95?98.

冯汝明,赵建利,杨波,等. 一起35kV并联电容器内绝缘故障分析与研究[J]. 电力电容器与无功补偿,2021,42(5):14?20.

电气装置安装工程电气设备交接试验标准:GB 50150-2016[S].2016.

电力设备预防性试验规程:DL/T 596-2021[S]. 2021.

电力设备检修试验规程:Q/CSG1206007-2017[S]. 2017.

标称电压1000 V以上交流电力系统用并联电容器第3部分:并联电容器和并联电容器组的保护:GB/T 11024.3-2019[S]. 2019.

杨昌兴,赵启承,杨立川,等.并联电容器组保护起始不平衡值的估算[J].电力电容器与无功补偿,2010,31(04):30-34.

杨红权,高竣,邱炜,等.10 kV 并联电容器组不平衡保护动作诊断及分析[J].电力电容器与无功补偿,2024,45(2):27-31.

张建军,李雪,李岩. 高压并联电容器装置运行可靠性的运维改进措施[J]. 电力电容器与无功补偿,2018,39(2):1?5.

张智光,倪秋龙,廖培,等. 计及新能源消纳的地区电网无功电压优化控制策略[J]. 浙江电力,2023,42(1):46?53.

杨昌兴,王明毫.并联电容器装置设计及应用的若干议题[J].电力电容器与无功补偿,2015,36(3):1?9.

倪学峰,盛国钊,严飞,等.110?500 kV变电站电容器装置典型规范应用说明[J].电力设备,2007,8(6):28?31.

杨旗,谢百明,陈沛龙,等.变电站双星形并联电容器组电容量快速测量方法[J].电力大数据,2020,23(07):54-61.

郑隆,申涛. 一起集合式电容器差压保护动作后解体分析[J]. 电工电气,2018(3):47?49.

毛磊,刘旭,颜玮,等.10 kV并联电容器组的跳闸分析与计算[J].电力电容器与无功补偿,2018,39(02):49-53+71.

张宗喜.220 kV变压器低压侧10 kV无功补偿装置电容器绝缘故障分析[J].电力电容器与无功补偿,2024,45(02):38-43.

廖斌,梁晨,陈松,等.一起35kV并联电容器装置故障原因分析[J].电力电容器与无功补偿,2022,43(05):1-6.

何建龙,张少江,郑歆,等. 放电线圈引起电容器组不平衡电流保护动作分析[J]. 电力电容器与无功补偿,2020,41(2):8?12.

覃智贤. 放电线圈引起电容器电压保护动作分析[J]. 电力电容器与无功补偿,2018,39(6): 95?98.

冯汝明,赵建利,杨波,等. 一起35kV并联电容器内绝缘故障分析与研究[J]. 电力电容器与无功补偿,2021,42(5):14?20.

电气装置安装工程电气设备交接试验标准:GB 50150-2016[S].2016.

电力设备预防性试验规程:DL/T 596-2021[S]. 2021.

电力设备检修试验规程:Q/CSG1206007-2017[S]. 2017.

标称电压1000 V以上交流电力系统用并联电容器第3部分:并联电容器和并联电容器组的保护:GB/T 11024.3-2019[S]. 2019.

杨昌兴,赵启承,杨立川,等.并联电容器组保护起始不平衡值的估算[J].电力电容器与无功补偿,2010,31(04):30-34.

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