一种新型全数字闭环光纤电流互感器方案

WANG Xiaxiao; ZHANG Chunxi; ZHANG Chaoyang; WU Zhanjun

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一种新型全数字闭环光纤电流互感器方案

更新时间：2025-08-13

- 一种新型全数字闭环光纤电流互感器方案
- Automation of Electric Power Systems Vol. 30, Issue 16, (2006)
- 作者机构：
  
  北京航空航天大学仪器科学及光电工程学院,北京市,100083
- 作者简介：
- 基金信息：
- DOI：
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- Published：2006
- 稿件说明：
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WANG Xiaxiao, ZHANG Chunxi, ZHANG Chaoyang, et al. [J]. Automation of electric power systems, 2006, 30(16).
DOI：

WANG Xiaxiao, ZHANG Chunxi, ZHANG Chaoyang, et al. [J]. Automation of electric power systems, 2006, 30(16). DOI：

摘要

介绍了一种新型的基于全数字闭环检测的在线Sagnac型光纤电流互感器方案。该检测方案以数字信号处理器（DSP）为核心，采用方波调制方案，并通过数字阶梯波反馈实现闭环检测。文中对闭环互感器的变比计算进行了分析。实验结果表明系统的百分电流误差在-40 ℃～60 ℃温度范围内可以达到0.5％的准确度，且相差小于30′，基本满足了实际应用的要求。

Abstract

A new in-line Sagnac fiber optic transformers (FOT) based on all digital closed-loop detection is introduced. With the core of digital signal processor (DSP)

the square wave scheme is used for biasing modulation and the digital ramp feedback is adopted for closed-loop detection. The coefficient of the factor for the closed-loop transformer is analyzed. The test results show the design viability with the system percentage current error less than 0.5% in the range of -40 ℃～+60 ℃ and phase error less than 30′.

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