10kV过流保护控制器的软件设计
关键词 ADE7878 单片机 数字信号处理 采样 过流保护
Title Software Designing of 10kV Overcurrent Protection Controller
Abstract
This paper firstly analyzes the importance of protection devices in the
power system, and use DSP and microcontroller technology to achieve the
function of power monitoring and protection equipment. Then it introduce
the features and performance of metering chip, ADE7878, and ARM
microcontroller, LPC1114, describes the design of the overcurrent
protection controller’s hardware circuits and the relationship between
them. After discussing the functions which the overcurrent protection
controller can realize, the paper develops a design and implementation
process of the software. The software is pided into the following
functional modules, sampling, calculation of current, voltage and other
electrical parameters, fault monitoring and identification. Each of the
functional modules is described in detail. Afterward, the paper shows the
steps to download the programs through the J-Link emulator and RS-232
serial. At last, download the program to the microcontroller to debug the
SPI and test the system function. After testing, the program runs properly
and achieves the desired effect, achieving the function of current
protection, zero-sequence overcurrent protection, definite time
overcurrent protection.
Keywords ADE7878 MCU DSP Sampling Overcurrent Protection
目 录
1 绪论 . 1
1.1 课题背景及意义 . 1
1.2 研究现状和发展趋势分析 . 1
1.3 本文的研究工作 . 2
2 总体设计方案 . 4
2.1 系统功能要求 . 4
2.2 主要器件简介 . 4
2.3 硬件结构简介 . 6
2.4 软件流程介绍 . 6
3 功能模块介绍 . 8
3.1 采样过程 . 8
3.2 电流采集与计算模块 . 8
3.3 电压采集与计算模块 10
3.4 功率、功率因数计算模块 11
3.5 故障检测与判别模块 14
4 系统功能测试 16
4.1 ADSV1.2 介绍 16
4.2 程序下载方式 17
4.3 SPI 调试 20
4.4 操作说明 29
4.5 模拟过流测试 30
结论 34
致谢 35
参考文献 36
1 绪论
1.1 课题背景及意义
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