Optimal Design of Primary and Secondary Fusion Electronic Current Transformer for Intelligent Distribution System

YANG Guiping; XIONG Jiangyong; GUO Yi; XIONG Liu

doi:10.14044/j.1674-1757.pcrpc.2019.05.021

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Optimal Design of Primary and Secondary Fusion Electronic Current Transformer for Intelligent Distribution System

更新时间：2024-09-14

- Optimal Design of Primary and Secondary Fusion Electronic Current Transformer for Intelligent Distribution System
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 40, Issue 5, Pages: 122-127(2019)
- 作者机构：
  
  江苏靖江互感器股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2019.05.021
  CLC： TM452
- Published：2019，
- 稿件说明：
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[1]杨桂平,熊江咏,郭毅,熊刘.智能配电一二次融合电子式电流互感器优化设计[J].电力电容器与无功补偿,2019,40(05):122-127.

YANG GUIPING, XIONG JIANGYONG, GUO YI, et al. Optimal Design of Primary and Secondary Fusion Electronic Current Transformer for Intelligent Distribution System. [J]. Power capacitor & reactive power compensation, 2019, 40(5): 122-127.
[1]杨桂平,熊江咏,郭毅,熊刘.智能配电一二次融合电子式电流互感器优化设计[J].电力电容器与无功补偿,2019,40(05):122-127. DOI： 10.14044/j.1674-1757.pcrpc.2019.05.021.

YANG GUIPING, XIONG JIANGYONG, GUO YI, et al. Optimal Design of Primary and Secondary Fusion Electronic Current Transformer for Intelligent Distribution System. [J]. Power capacitor & reactive power compensation, 2019, 40(5): 122-127. DOI： 10.14044/j.1674-1757.pcrpc.2019.05.021.

摘要

电子式电流互感器二次输出时

特征信息的线性保持与非特征信息的限制是一二次融合的物理本质要求

影响一二次融合的因素主要是复合误差、时间常数、结构对称性和相邻元件的电磁干扰。本文设计采用参数关联方程计算的方法

以获得优化设计方案。测量铁芯、保护铁芯和零序电流铁芯都采用高磁导率纳米晶合金作为铁芯

测量铁芯和保护铁芯采用同一铁芯

零序电流铁芯采用整体铁芯。额定短路准确限值电流时

测量铁芯及保护铁芯磁密取1.1 T

零序电流铁芯磁密取0.96 T

避免非线性现象发生。电流/电压转换电阻置于控制单元输入接口

调试以电流为准。实验表明

全电流范围内:测量保护达0.5 S级

零序电流比值差和复合误差都小于1%

能够满足一二次融合要求。

Abstract

In case of secondary output of electronic current transformer

the linear preservation of characteristic information and the restriction of non-characteristic information are the physical essential requirements of primary and secondary fusion.The factor affecting the primary and secondary fusion is mainly compound error

time constant

structural symmetry and electromagnetic interference of adjacent elements.The parameter correlation equation is used in this paper to design the optimal design scheme.The nano-crystalline alloy with high permeability is used as the core for measurement

protection and zero sequence

and the same core is used for measurement and protection

while the whole core is used for zero sequence current core.When rating the accurate limit current of short circuit

1.1 T of protective magnetic hermetic and0.96 T of zero sequence magnetic hermetic are measured so to avoid nonlinear phenomena.The current/voltage converting resistor is placed in the input interface of the control unit and the regulation is based on current.It is shown by the experiment that in the full current range

the measurement protection reaches 0.5 S level

the zero sequence ratio difference and composite error are less than 1%

which can meet the requirements of primary and secondary fusion.

关键词

智能配电一二次融合电子式电流互感器时间常数结构与参数优化设计

Keywords

intelligent power distributionprimary and secondary fusionelectronic current transformertime constantstructure and parametersoptimal design

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