Effect of Current Protection Mechanism on Early Fault Warning Strategy of 10 kV Capacitor Bank Without Inner Fuses

ZHANG Peng; YANG Dong; LU Chengyu; WANG Jiachen; ZHAI Guozhu

doi:10.14044/j.1674-1757.pcrpc.2020.05.002

您当前的位置：

首页 >

文章列表页 >

Effect of Current Protection Mechanism on Early Fault Warning Strategy of 10 kV Capacitor Bank Without Inner Fuses

更新时间：2024-09-14

- Effect of Current Protection Mechanism on Early Fault Warning Strategy of 10 kV Capacitor Bank Without Inner Fuses
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 5, Pages: 6-11(2020)
- 作者机构：
  
  1. 上海交通大学电气工程系
  2. 国网江苏省电力有限公司太仓市供电分公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.05.002
  CLC： TM53
- Published：2020，
- 稿件说明：
移动端阅览
[1]张鹏,杨栋,陆承与,王加臣,翟国柱.现行保护机制对10kV无内熔丝电容器组早期故障预警策略的影响[J].电力电容器与无功补偿,2020,41(05):6-11.

ZHANG PENG, YANG DONG, LU CHENGYU, et al. Effect of Current Protection Mechanism on Early Fault Warning Strategy of 10 kV Capacitor Bank Without Inner Fuses. [J]. Power capacitor & reactive power compensation, 2020, 41(5): 6-11.
[1]张鹏,杨栋,陆承与,王加臣,翟国柱.现行保护机制对10kV无内熔丝电容器组早期故障预警策略的影响[J].电力电容器与无功补偿,2020,41(05):6-11. DOI： 10.14044/j.1674-1757.pcrpc.2020.05.002.

ZHANG PENG, YANG DONG, LU CHENGYU, et al. Effect of Current Protection Mechanism on Early Fault Warning Strategy of 10 kV Capacitor Bank Without Inner Fuses. [J]. Power capacitor & reactive power compensation, 2020, 41(5): 6-11. DOI： 10.14044/j.1674-1757.pcrpc.2020.05.002.

摘要

针对近年来国内电容器组在线监测装置罕有成功预警案例的现象

通过分析10 kV无内熔丝电容器组的外熔断器和继电保护协同机制

指出尽管理论条件下

通过监测电容器内部单个元件击穿时的电气量突变情况能够实现预警功能

但在工程实践中

由于保护的实际整定值远低于理论值

单台电容器内部击穿1个元件通常即可触发继电保护动作

各类基于突变量的预警方法将丧失时间裕度

需适当调高保护定值、允许电容器组短期带病运行

方能发挥其预警功效。

Abstract

In view of the rare successful early warning cases of online monitoring devices for domestic capacitor banks in recent years

it is pointed out by analyzing the cooperative mechanism of external fuse and relay protection of 10 kV capacitor bank without inner fusesthat the early warning function can be achieved by monitoring the sudden change of electrical quantity at breakdown of single element of capacitor at theoretical condition

yet in engineering practice

since the actual setting value of protection is much lower than the theoretical value

the breakdown of a single element in capacitor can usually trigger the relay protection.Various kinds of early warning methods based on mutation will lose time margin.It is necessary to adjust the protection setting value appropriately and allow the capacitor bank to run with illness for a short termin order to play warning effect of online monitoring devices.

关键词

在线监测保护协同保护整定预警策略

Keywords

online monitoringprotection coordinationprotection settingearly warning strategy

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on Inter-turn Short Circuit Fault Monitoring of Dry-type Air-core Reactor Based on Phase Difference Change

Failure Analysis and Treatment on Two Capacitor Voltage Transformers

Online Monitoring Technical Proposal for a New Type of Shunt Capacitor

Early Failure Online Intelligent Warning Method for Capacitor Bank

Study on Online Monitoring Algorithm of Internal Fuse Power Capacitor Based on Steady Current

Related Author

LIAO Jing

PAN Zhimin

ZHU Jiayun

WU Shibao

YIN Xu

LI Wei

WANG Zhihong

CAO Xiao-long2

Related Institution

China Electric Power Research Institute Co., Ltd.

Substation Intelligent Operation and Inspection Laboratory of State Grid Hunan Electric Power Co., Ltd.

State Grid Hunan Extra High Voltage Substation Company

Tianshui Extra-high Tension Convey the Changeable Electricity Company

Power Supply Company of Tianshui City

⁰