基于ARM9微处理器的电流互感器变比特性测试的研究  

Transformation Ratio Test of Current Transformer Based on ARM9 Microprocessor

作　　者：吕方兴[1,2] 陈守满[1] 方昕[1] 

机构地区：[1]安康学院电子与信息工程学院,安康725000 [2]西安交通大学电气学院,西安710049

出　　处：《计算机与数字工程》2017年第4期745-750,共6页Computer & Digital Engineering

基　　金：国家自然科学基金项目(编号:51377125);陕西省教育厅项目(编号:12JK0536;16JK1016;16JK1015);陕西省青年科协项目(编号:2015110);安康学院培育项目(编号:2016AYPYZX09);安康学院高层次人才项目(编号:2016AYQDZR06)资助

摘　　要：电流互感器(CT)变比特性是CT性能的重要体现,而测量CT变比特性是判断其性能的重要方法。针对现场使用电流法测量电流互感器变比特性较难等问题,研究了一种以基于ARM920T内核的32位嵌入式微处理器S3C2410为核心的电压比测量电流互感器变比特性的测试方法。其测试系统主要由中央处理器模块、二次侧电压和一次侧电压信号调理模块、数据采集模块等组成,从而提高测量的可靠性和稳定性。通过对不同变比的电流互感器进行测试,电流互感器变比特性的准确度可达到0.87%。试验结果表明,该测试方法简单可行,测试电源容量低、稳定性高。Transformation ratio of current transformer is an important manifestation of CT performance,and measuring CT transformation ratio is an important method to judge its performance.In order to solve the problem that the large current source is difficult to obtain in measuring the ratio of current transformer by current ratio,a test method based on ARM9＇s 32-bit embeds micro processing S3C2410 as the core processor to measure the current transformer ratio characteristic by voltage ratio is studied.This system is mainly composed of a central processor module,secondary voltage and primary voltage signal conditioning module,data acquisition module,in order to improve the reliability and stability of measurement.By the current transformer ratio of different ratio test,the accuracy can reach 0.87%.The test results show that this method is simple and feasible,and has low test power and high stability.

关 键 词：电流互感器 变比 ARM9 S3C2410 测试 

分 类 号：TM452[电气工程—电器] TP274[自动化与计算机技术—检测技术与自动化装置]