摘 要

电流电压互感器测试仪是电力系统中非常重要的一个设备，电流电压互感器的好坏决定了电力系统的运行状态，所以需要测试仪去检测电流电压互感器的运行状态。在目前国外的研究发展远远超过了我国，所以对于电流电压互感器测试仪的研究是非常具有意义的。

本文首先介绍了电流电压互感器的研究背景和国内外的现状，从市场形式上阐述了本次研究的意义，对于需要测量的电力参数进行了简要的介绍。本次的研究是基于DSP芯片进行设计的，DSP芯片具有非常高的运算速度和运行稳定性，这样的高性能保证了整个系统的正常运行。对于软件程序部分，本文也做了简要的介绍，软件部分采用模块化设计，在主程序框架中包含了液晶显示部分、打印机驱动部分和中断服务程序部分，对于液晶显示部分做了比较详细的介绍。

最后对成本进行了分析，对整个工作过程进行了总结。

关键字：电流电压互感器测试仪；DSP芯片；硬件原理图分析；成本分析

Abstract

Current and voltage transformers in the power system tester is a very important device, current and voltage transformers determines whether the power system operating state, so it is necessary to detect the current and voltage tester transformer operation. In the current research and development abroad far more than the country, so the research current and voltage transformer tester it is very meaningful.

This paper introduces the background and research status at home and abroad of current and voltage transformers, described the significance of this research from the formal market, the need to measure the electrical parameters of a brief introduction. This study was designed based on DSP chip, DSP chip has a very high operation speed and operation stability, and performance to ensure the normal operation of the entire system. For the software part of the program, the paper also made a brief introduction, the software part of the modular design, in the main frame contains a liquid crystal display section, part of the printer driver and the interrupt service routine part of the liquid crystal display part do a more detailed description .

Finally, an analysis of the costs of the entire work process is summarized.

Keywords: current and voltage transformer tester; DSP chip; hardware schematic analysis; cost analysis

目 录

摘要·······························································Ⅰ

Abstract························································Ⅱ

第1章 绪论·····················································1

1.1 研究背景··················································1

1.2 国内外研究现状···············································1

1.3 研究内容··················································2第2章 电力参数原理及测量···········································3

2.1 电流互感器···············································3

2.2 电压互感器················································3

2.3 电力参数···············································5

第3章 系统硬件设计··············································7

3.1 方案论证··············································7

3.2 主程序电路板················································8

3.2.1 TMS320LF2407APGEA······································10

3.2.2 AD7865 BSZ-1········································10

3.2.3 IS61LV12816L·········································11

3.2.4 EPM7128STC100········································11

3.2.5 SST39VF800A···········································12

3.3 显示模块电路板··········································13

第4章 系统软件设计··········································19

4.1 主程序部分···········································19

4.2 液晶显示模块···············································20

4.3 打印机模块·············································21

第5章 成本分析················································24

第6章 总结·············································27

参考文献·························································28

致谢···························································29

第1章 绪论

1.1 研究背景

在智能电网蓬勃发展的今天，电流电压互感器在电力系统中的作用已经不容小觑，电力系统设备的发展也越来越大型化和智能化，电力系统的容量也越来越大，可承受的电压也越来越高。电流电压互感器作为电力系统中的关键的计量设备，它的计量性能直接关系到整个电网系统计量的准确性。电流电压互感器对电力系统中的信号直接采集、测量和保护，它的好坏将直接影响到整个电网系统的正常的运行。因此，作为监控设备的电流电压互感器测试仪的作用也凸显出来。电流电压互感器测试仪可测量电流电压互感器的各个电力参数，对互感器的运行状态进行实时监控，当互感器出现线圈绕组短路或者接点电阻过大时，互感器测试仪可将异常数据反馈给工作人员并对互感器进行保护操作，避免电力系统出现重大事故。因此，电流电压互感器测试仪对于电力系统具有至关重要的作用。

1.2 国内外研究现状

在20世纪50年代之前，电力系统中普遍使用的是机械式电参数测试仪，也叫做感应式电参数测试仪。但那时，限于技术的发展，这种电参数测试仪由于机构和原理上的不足，使得测量结果十分不准确，因此需要发展新的技术来突破这个瓶颈。到20世纪50年代，电子数字技术的出现加快了电参数测试仪的发展，到20世纪70年代，微电子技术和微计算机技术迅猛发展使得数字采样方法诞生，这种关键的技术使得电参数测试仪的发展逐渐走向成熟。

到20世纪80年代，电测与仪表技术蓬勃发展，特别是近十几年来，电测与仪表技术随着大规模集成电路、计算机技术、网络通信技术的发展而飞速发展，各种新的技术和概念不断出现，各种学科技术不断融合在一起，测量系统与计算机、通信、以及控制系统的界限越来越模糊，测量系统由传统的集中式逐渐发展为分布模式，成为越来越智能化的测控系统。