Analysis of 10kV Shunt Capacitor Device Adopting Differential Protection

LIN Hao; NI Xuefeng; JIANG Shengbao; SHENG Guozhao; GUO Jiang; HUANG Lin

doi:10.14044/j.1674-1757.pcrpc.2014.03.010

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Analysis of 10kV Shunt Capacitor Device Adopting Differential Protection

更新时间：2024-09-14

- Analysis of 10kV Shunt Capacitor Device Adopting Differential Protection
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 35, Issue 3, Pages: 39-43(2014)
- 作者机构：
  
  中国电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2014.03.010
  CLC： TM53
- Published：2014，
- 稿件说明：
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[1]林浩,倪学锋,姜胜宝,盛国钊,国江,黄林.10kV框架式电容器装置采用差压保护的问题简析[J].电力电容器与无功补偿,2014,35(03):39-43.

LIN HAO, NI XUEFENG, JIANG SHENGBAO, et al. Analysis of 10kV Shunt Capacitor Device Adopting Differential Protection. [J]. Power capacitor & reactive power compensation, 2014, 35(3): 39-43.
[1]林浩,倪学锋,姜胜宝,盛国钊,国江,黄林.10kV框架式电容器装置采用差压保护的问题简析[J].电力电容器与无功补偿,2014,35(03):39-43. DOI： 10.14044/j.1674-1757.pcrpc.2014.03.010.

LIN HAO, NI XUEFENG, JIANG SHENGBAO, et al. Analysis of 10kV Shunt Capacitor Device Adopting Differential Protection. [J]. Power capacitor & reactive power compensation, 2014, 35(3): 39-43. DOI： 10.14044/j.1674-1757.pcrpc.2014.03.010.

摘要

本文对近年来10 kV框架式并联电容器装置中推出的差压保护接线用电容器单元的损耗过电压进行了简略计算和分析

得出这种装置中所使用的电容器单元内部只有两个串联段

正常运行时电容器电流大、附加损耗大

易出现发热问题。在电容器出现故障时

易发生过电压传递。由于电容器及连接件的发热和过电压传递而易引起电容器及完好串段破坏

给运行带来隐患。因此

在10 kV电压等级中框架式电容器装置应尽可能少用这种接线

以避免电容器装置故障扩大而危及电力系统安全。

Abstract

In this paper

the loss and overvoltage of capacitor unit for differential protection wiring

which is launched recently for 10 kV frame type shunt capacitor devices

is simply calculated and analyzed

and it is concluded that inside the capacitor unit

used in this device

only two serial section

high current of capacitor in normal operation

additional loss increase

heating problems easy to appear. In case of capacitor failure

overvoltage transmission is easily happened. The capacitor and the intact series section are damaged by heating of capacitor and its connectors as well as overvoltage transmission

which will bring hidden danger for operation. Therefore

such wiring at 10 kV frame type capacitor type shall be used as less as possible so to avoid fault development of capacitor device endanger safety of power system.

关键词

电容器单元串联段差压保护过电压故障击穿完好串段

Keywords

capacitor unitseries sectiondifferential voltage protectionovervoltagefault breakdownintact series section

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