Research on the Measurement Performance of a Wide Range Current Transformer Based on Passive Compensation

ZHANG Dingqu; SONG Qiang; YANG Lu; WANG Yan; SONG Hongtian; DANG Sanlei; MENG Qingliang; WANG Baoshuai

doi:10.13296/j.1001-1609.hva.2026.05.016

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Research on the Measurement Performance of a Wide Range Current Transformer Based on Passive Compensation

Research & Analysis | 更新时间：2026-05-13

- Research on the Measurement Performance of a Wide Range Current Transformer Based on Passive Compensation
- High Voltage Apparatus Vol. 62, Issue 5, Pages: 141-148(2026)
- 作者机构：
  
  广东电网有限责任公司计量中心，广州 510600
  南方电网科学研究院有限责任公司，广州 510630
  广东省电网智能量测与先进计量企业重点实验室，广州 510630
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.05.016
  CLC：
- Received：03 October 2025，
  
  Revised：2025-12-08，
  
  Published：16 May 2026
- 稿件说明：
移动端阅览
ZHANG Dingqu, SONG Qiang, YANG Lu, et al. Research on the Measurement Performance of a Wide Range Current Transformer Based on Passive Compensation[J]. High Voltage Apparatus, 2026, 62(5): 141-148.
DOI：

ZHANG Dingqu, SONG Qiang, YANG Lu, et al. Research on the Measurement Performance of a Wide Range Current Transformer Based on Passive Compensation[J]. High Voltage Apparatus, 2026, 62(5): 141-148. DOI： 10.13296/j.1001-1609.hva.2026.05.016.

摘要

电网中光伏风电等新能源的接入比例不断提高，由于新能源的间歇性和宽量程负荷变化特性，使得并网点处呈现出电流宽范围的特性。传统的电磁式电流互感器对宽范围电流的测量将产生较大的误差。针对励磁电流是影响电流互感器传变精度的主要因素，文中提出一种基于复合铁心的零磁通电流互感器结构。该电流互感器以复合铁心作为主铁心，设置辅助铁心和补偿绕组对电流互感器进行无源补偿，使主铁心工作在近似零磁通状态，减小电流互感器的传变误差，拓宽电流互感器的量程。通过分析该电流互感器的误差传递函数，并利用有限元仿真软件进行仿真，理论和仿真分析结果均验证了该零磁通电流互感器具有较高的测量精度和良好的宽量程特性，一次电流在（0.1%～200%）

范围内满足0.2S级电流互感器的精度要求。

Abstract

The continuous increase of integration proportion of such new energy sources as photovoltaic wind power

due to the intermittency of renewable energy and the characteristics of wide-range load variations

enables the grid connection points to exhibit a wide range current characteristic. Traditional electromagnetic current transformer will cause significant errors in the measurement of wide range currents. In view of the fact that excitation current is the main factor affecting the transmission accuracy of current transformers

in this paper zero flux current transformer structure based on a composite iron core is proposed. The current transformer uses a composite iron core as the main iron core

and an auxiliary iron core and compensation winding are set for passive compensation of the current transformer

making the main iron core operate in an approximately zero magnetic flux state

reducing the transmission error of the current transformer and expanding the measuring range of the current transformer. Throughout the analysis of the error transfer function of the current transformer and the use of finite element simulation software for simulation

it is proved by both theoretical and simulation results that the zero-flux current transformer has higher metering accuracy and excellent wide range characteristics

and the primary current can meet the accuracy requirement of class 0.2S current transformer within the range of 0.1%

to 200%

关键词

Keywords

references

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