Differential Protection of Optical-fiber Line Based on Electronic Current Transformer

WANG Xiao-fang1; ZHOU You-qing2; LI Fu-liang2

您当前的位置：

首页 >

文章列表页 >

Differential Protection of Optical-fiber Line Based on Electronic Current Transformer

更新时间：2025-05-17

- Differential Protection of Optical-fiber Line Based on Electronic Current Transformer
- High VoltageApparatus Vol. 45, Issue 4, Pages: 29-33+36(2009)
- 作者机构：
  
  1. 邵阳学院电气工程系
  2. 湖南大学电气与信息工程学院
  3. 湖南水利水电职业技术学院电力工程系
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM773
- Published：2009
- 稿件说明：
移动端阅览
[1]王晓芳,周有庆,李付亮.基于电子式电流互感器的线路光纤纵差保护[J].高压电器,2009,45(04):29-33+36.

WANG Xiao-fang1, ZHOU You-qing2, LI Fu-liang2. Differential Protection of Optical-fiber Line Based on Electronic Current Transformer[J]. High voltageapparatus, 2009, 45(4): 29-33+36.
[1]王晓芳,周有庆,李付亮.基于电子式电流互感器的线路光纤纵差保护[J].高压电器,2009,45(04):29-33+36. DOI：

WANG Xiao-fang1, ZHOU You-qing2, LI Fu-liang2. Differential Protection of Optical-fiber Line Based on Electronic Current Transformer[J]. High voltageapparatus, 2009, 45(4): 29-33+36. DOI：

摘要

基于Rogowski线圈的电子式电流互感器（ECT）没有饱和现象

可以从根本上解决由于CT饱和造成差动保护误动情况的发生。笔者阐述了ECT的暂态传变特性

论述了积分时间常数对Rogowski线圈暂态特性的影响。以线路光纤纵差保护为例

利用实验数据分析了采用ECT后纵差保护的性能

指出采用ECT后保护在区外故障可靠性、区内故障灵敏度方面有显著提高

继而改进了传统的二段式比率制动差动保护动作特性。鉴于实用化的要求

遵循IEC 61850标准给出了ECT与线路光纤纵差保护的接口实现方案

并设计了一款信息合并单元的硬件方案。

Abstract

The Rogowski coil based electronic current transformer has no saturation phenomenon

thus it can completely eliminate the misoperation of differential protection due to CT saturation.The transient characteristics of ECT and the impact of integration time constant on transient characteristics of Rogowski coil are described in this paper.Taking the fiber longitudinal differential line protection as an example

the performance of longitudinal differential protection using ECT is analyzed based on experimental data.It is shown that by using ECT

both the sensitivity and reliability of the relay protection are improved

and the operation property of conventional two-stage percentage restraint differential protection is meliorated.To meet the practical requirements

an implementing scheme of the interface between ECT and fiber longitudinal differential line protection is designed conforming to IEC 61850 standard.Moreover

a hardware scheme of data merging unit is proposed.

关键词

Keywords

references

Views

198

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Synchronization Test Technology for Line Merging Units Based on Voltage Following

RESEARCH OF THE ROGOWSKI CURRENT TRANSDUCER USED IN 110 kV TRANSFORMER

THE DEVELOPMENT OF CURRENT TRANSDUCER BASED ON THE ROGOWSKI COIL

DESIGN OF OPTICAL CURRENT TRANSFORMER WITH LOW POWER CONSUMPTION

Study of the Influences of Dimensions and Electromagnetic Parameters on the Performance of Rogowski Coil

Related Author

LI Zhenxing

PI Zhiyong

HU Cong

LI Zhenhua

ZHAO Ziyi

CAO Dongyu

GUO Xiao hua

?YE Miao yuan

Related Institution

State Grid Hubei Jingmen Electric Power Supply Company

College of Electrical and New Energy, China Three Gorges University

华中科技大学电气与电子工程学院湖北武汉430074

Huazhong University of Science and Technology

河北石家庄050031

⁰