电气技术Issue(10)：20-23,4.
一种测量变压器接地电阻电流的电子式电流互感器
The Kind of Electronic Current Transformer for Measuring the Current Through Ground Resistance of Power Transformer
赵旭彤 1彭搏 1肖登明1
作者信息
- 1. 上海交通大学电气工程系,上海200030
- 折叠
摘要
Abstract
A kind of electronic current transformer for measuring the current flowing through power transformers' ground resistance of is designed to overcome the disadvantage of low accurancy, linearity sent, complex insulation structure, easily magnetic saturated existing in traditional current transformers. It has a high accurancy over a wide current range. The high voltage side is laser powered and Hallelement is used for sensing, signal of primary current is transmitted to low voltage side to process after modulation, analog to digital converting and electrical to optical converting. The accuracy test results showed that the transformer could satisfy the requirement of GB/T 20840.8-2007 and the measurement accurancy could reach class 0.2/5E关键词
电子式电流互感器/激光供能/光纤/A／D转换Key words
Electronic current transformer (ECT)/laser powered/optical fiber/analog to digital convert分类
信息技术与安全科学引用本文复制引用
赵旭彤,彭搏,肖登明..一种测量变压器接地电阻电流的电子式电流互感器[J].电气技术,2012,(10):20-23,4.
