Research of 35 kV Electronic Current Transformer

YANG Hong1; FANG Chun-en1; REN Xiao1; DONG En-yuan2; LI Wei1; WANG Jun1; HOU Xiang-yu3

doi:10.13296/j.1001-1609.hva.2011.02.003

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Research of 35 kV Electronic Current Transformer

更新时间：2025-04-26

- Research of 35 kV Electronic Current Transformer
- High VoltageApparatus Vol. 47, Issue 2, Pages: 12-16(2011)
- 作者机构：
  
  1. 西华大学电气信息学院
  2. 大连理工大学电气工程与应用电子技术系
  3. 四川泰克电器有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.02.003
  CLC： TM452
- Published：2011
- 稿件说明：
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[1]杨洪,方春恩,任晓,董恩源,李伟,王军,侯祥玉.35kV电子式电流互感器的研究[J].高压电器,2011,47(02):12-16.

YANG Hong1, FANG Chun-en1, REN Xiao1, et al. Research of 35 kV Electronic Current Transformer[J]. High voltageapparatus, 2011, 47(2): 12-16.
[1]杨洪,方春恩,任晓,董恩源,李伟,王军,侯祥玉.35kV电子式电流互感器的研究[J].高压电器,2011,47(02):12-16. DOI： 10.13296/j.1001-1609.hva.2011.02.003.

YANG Hong1, FANG Chun-en1, REN Xiao1, et al. Research of 35 kV Electronic Current Transformer[J]. High voltageapparatus, 2011, 47(2): 12-16. DOI： 10.13296/j.1001-1609.hva.2011.02.003.

摘要

基于小铁心电流传感器LPCT和空心线圈原理的35 kV电子式电流互感器具有测量精度高、动态范围宽等优点

与传统的电磁式电流互感器相比有着明显的优势。文中分析了35 kV电子式电流互感器的测量用LPCT传感器和保护用PCB空心线圈电流传感器的工作原理及影响电子式电流互感器测量准确度的主要因素;采用有限元法对电子式电流互感器的电场进行仿真计算

优化了互感器的电场结构。在理论分析基础上

研制了一台35 kV电子式电流互感器

给出了准确度测试。测试结果表明

设计的35 kV电子式电流互感器符合GB/T 20840.8—2007要求

满足电力系统测量准确度0.2级和保护准确度5P要求。

Abstract

The 35 kV electronic current transformer based on low power instrument transducer LPCT and air core coil has some performances such as high accuracy and wider dynamic range

in which it shows obvious advantages over the traditional current transformer of the inductive type.In this paper

the principle of the 35 kV electronic current transformer and the influence factors on the transformer’s accuracy were analyzed in detail.And the electrical field of the electronic current transformer was simulated by a FEM and the electric field has been optimized.A 35 kV electronic current transformer has been developed and tested.The accuracy test results showed that the transformer could satisfy the requirement of GB/T 20840.8—2007 and the measurement accuracy could reach class 0.2/5P.

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