直流操作电源监控系统的研究

论文编号:JD087   附开题报告,大图 字数:27120,页数:63

摘  要
电力开关电源是电力系统中为电厂及各类变电所供电的直流操作电源，它是一种大功率的开关电源。直流操作电源的可靠性与稳定性直接影响到发电、变电、通信等运行的安全性。因此应用计算机技术对直流操作电源的运行状态实行监控，对提高操作电源系统的可靠性、稳定性具有十分重要意义。
该设计介绍了直流操作电源的历史、现状及发展趋势，分析研究了直流操作电源监控系统的功能及技术要求，设计了基于RS232通讯方式的直流操作电源监控系统。装置采用模块化设计思路：用主机和从机两个模块来实现电源转换部分和配电部分的监控功能。以AduC812芯片为中心控制芯片，结合CPLD编程来实现多路A/D,D/A转换功能以及计算机和监控器之间的通讯。

关键词  开关电源 监控器 ADuC812 CPLD

Abstract
     Electric switching power is the DC operation power that supply power to power plant and all kinds of transformer substations. The reliability and stability of the DC operation power system relates directly to the security of stations and substations. So by applying the computer technology for monitoring the appearance of circulation of DC operation power system, it plays an important role in improving the reliability and stability of the DC operation power system.
In this design, the history, present condition and development trends of the DC power supply system is introduced, analyzing the function and the technology request of the DC power supply system, designs the total construction of the DC power supply system which based on RS232 communication mode. The device adopts the method of modularization designing. The device consists of Master module and slave module and each module respectively monitors the power transform and power distribution part. The main control Microchip ADuC812 combined with xc95144 CPLD not only has achieved the function of multi-channel A/D and D/A conversions, but also the communication between the computer and the monitor devices.

Key words  power system   monitor   ADuC812   CPLD

目录
摘  要 .......................................................I
Abstract ....................................................II

第1章  绪论 ..................................................1
1.1课题的背景及意义.......................................... 1
1.2直流操作电源的发展 ........................................1
1.2.1 传统直流操作电源 .......................................1
1.2.2电力直流操作电源的发展趋势 ..............................2
1.3设计的主要工作.............................................3
第2章直流电源监控系统总体结构设计........................... 5
2.1直流操作电源的工作原理及结构.............................. 5
2.2 监控系统的作用及特点..................................... 6
2.3 监控系统的总体结构设计....................................8
2.4 主要芯片简介............................................. 9
第3章主机功能及结构设计 ....................................14
3.1 直流充电过程的控制与实现.................................15
3.1.1蓄电池的充放电控制基础 .................................15
3.1.2直流充电模块的技术要求 .................................17
3.1.3并联电源系统常用的均流方法 .............................19
3.1.4直流充电模块的实现 .....................................24
3.2 绝缘检测功能设计.........................................26
3.3主机状态监控功能设计与实现................................28
3.3.1 电源系统状态监控模块的功能.............................28
3.3.2 电源系统状态监控模块的软件设计........................ 29
第4章从机功能及结构设计 ....................................32
4.1 电压测量电路............................................ 32
4.2 多路电池巡检 ............................................37

社会经济效益分析 ............................................39
结论 ........................................................40
致谢 ........................................................41
参考文献 ....................................................42
附录1 .......................................................44
附录2 .......................................................47
附录3....................................................... 52