Design of Power Supply for On-line Monitoring Contact-type Temperature Sensor in Switchgear

XU Yu-yu; ZHENG Yi; WANG Xiao-hua; RONG Ming-zhe; ZHAO Tong-xu

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Design of Power Supply for On-line Monitoring Contact-type Temperature Sensor in Switchgear

更新时间：2025-04-26

- Design of Power Supply for On-line Monitoring Contact-type Temperature Sensor in Switchgear
- High VoltageApparatus Issue 6, Pages: 424-426(2004)
- 作者机构：
  
  1. 西安交通大学电气工程学院
  2. 西安交通大学电气工程学院陕西西安710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP212
- Published：2004
- 稿件说明：
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[1]许玉玉,郑义,王小华,荣命哲,赵同旭.成套开关设备用接触式在线监测温度传感器电源的研制[J].高压电器,2004(06):424-426.

XU Yu-yu, ZHENG Yi, WANG Xiao-hua, et al. Design of Power Supply for On-line Monitoring Contact-type Temperature Sensor in Switchgear[J]. High voltageapparatus, 2004, (6): 424-426.
[1]许玉玉,郑义,王小华,荣命哲,赵同旭.成套开关设备用接触式在线监测温度传感器电源的研制[J].高压电器,2004(06):424-426. DOI：

XU Yu-yu, ZHENG Yi, WANG Xiao-hua, et al. Design of Power Supply for On-line Monitoring Contact-type Temperature Sensor in Switchgear[J]. High voltageapparatus, 2004, (6): 424-426. DOI：

摘要

接触式温度传感器应用于成套开关设备

其前端电源的获取是一个主要问题。笔者利用磁饱和原理

在开关柜母线上安装一电流互感器

使其铁心在小电流时正常励磁

大电流时磁饱和

并通过计算确定其尺寸

研制了满足功率和电压要求的前端电源

从而为后端的接触式传感器和温度在线监测系统提供了稳定、不间断的电源。

Abstract

How to power the contact-type temperature sensor is a main problem for its application in high voltage switchgear. This paper introduces a method which utilizes magnetic saturation principle to solve the problem. A kind of current transformer is installed around the inside bus bar. It is excited normally when lower current passes through it; and saturated when higher current. Therefore

the dimensions of iron-core of current transformer can be calculated to meet the power supply requirement of the sensor at the front end

providing a stable power source for the subsequent circuit.

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