Design Method of Current Transformer Based on Modulation of Light Intensity Principle

WANG Wei; XU Bingyin; WANG Huaguang; LYU Pan; LIANG Dong

doi:10.13296/j.1001-1609.hva.2016.07.010

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Design Method of Current Transformer Based on Modulation of Light Intensity Principle

更新时间：2025-04-26

- Design Method of Current Transformer Based on Modulation of Light Intensity Principle
- High VoltageApparatus Vol. 52, Issue 7, Pages: 61-67(2016)
- 作者机构：
  
  1. 山东理工大学电气与电子工程学院
  2. 国网山东省电力公司
  3. 3. 国网山东省桓台县供电局
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.07.010
  CLC： TM452
- Published：2016
- 稿件说明：
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[1]王玮,徐丙垠,王华广,吕攀,梁栋.基于光强调制原理的电流互感器设计方法[J].高压电器,2016,52(07):61-67.

WANG Wei, XU Bingyin, WANG Huaguang, et al. Design Method of Current Transformer Based on Modulation of Light Intensity Principle[J]. High voltageapparatus, 2016, 52(7): 61-67.
[1]王玮,徐丙垠,王华广,吕攀,梁栋.基于光强调制原理的电流互感器设计方法[J].高压电器,2016,52(07):61-67. DOI： 10.13296/j.1001-1609.hva.2016.07.010.

WANG Wei, XU Bingyin, WANG Huaguang, et al. Design Method of Current Transformer Based on Modulation of Light Intensity Principle[J]. High voltageapparatus, 2016, 52(7): 61-67. DOI： 10.13296/j.1001-1609.hva.2016.07.010.

摘要

针对数字传输方式的电子式电流互感器存在的不足

提出了一种光强调制式电流互感器的设计方法。分析了光强调制法应用于一次转换器的关键技术

介绍了系统的设计原理及主要电路的设计方法;通过对光信号传输过程中电—光转换、光纤传输及光—电转换过程进行分析

提出了一种计算一次侧交流信号的新方法

并对系统的传输特性进行了详细分析;通过分析LED在温度变化时的发光特性

提出了应对温度变化的电流补偿方法。实验结果表明

文中方法可使电流互感器中的信号传输部分满足0.2级互感器的比差要求

可以用于电子式电流互感器的设计。

Abstract

Aiming at solving the problem existing in the electronic current transformer using digital transmission way

a design method of current transformer using modulation of light intensity principle is proposed. The key techniques of light intensity modulation applying to primary converter are analyzed

and the design principle of the system and the main circuit are introduced; based on the analysis of the transmission of optical signals which including electric optical conversion

optical fiber transmission and photoelectric conversion

a new method for calculating ac signal on the primary side is proposed

and the transfer characteristic is analyzed in detail; by means of analyzing the LED light-emitting characteristics when the temperature changes

a current compensation method response to the temperature changes is proposed. The experimental results show that

the signal transmission of the current transformer has reached the requirement of 0.2 level of current transformer

the method can be used in the design of electronic current transformer.

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