发电机自动并网控制系统

Among which, power supply component turns 220V voltage into +5V and -5V to system supply, single-chip device control module will implement real-time monitoring on grid voltage based on control commands sent out by detected grid, voltage signal conditioning module, AD sampling module and MOSFET drive module. This paper illustrates the principles of compositing the system, the implementation methods of the hardware, the implementation methods of software, and shows some of the schematic diagrams and circuit diagrams.
本科毕业设计论文
本科毕业设计论文
题 目 发电机自动并网控制系统设计
专业名称 电气工程及其自动化 学生姓名 范瑞宇 指导教师 范蟠果 毕业时间 2012 年 6 月
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本科毕业设计论文
摘要
随着经济和高科技产业的发展，社会对供电可靠性和电能质量有了更高要 求。如今的电力行业依托科研，不断提高自动化水平，对从业人员素质能力要求 更加严格。高校为培养高素质电气工程专业人才，就必须加强实验室建设，研制 出一些反映当前行业特点的实验装置。在国家电网数字化管理的背景下，微机型 电气设备将占据核心位置。采用AT89C51单片机作为实验装置的核心控制，充分 发挥了单片机在实时控制方面的优势，反应了当前电气监控设备的发展趋势，可 实现发电机快速准确的并入电网。实验装置简单灵活，可有效的应用于教学实践， 进一步加强电气工程专业实验室建设。
第三章 硬件电路........................................................................................................17 3.1 单片机............................................................................................................17 3.1.1 单片机技术简介：.............................................................................17 3.1.2 单片机的开发与应用：....................................................................18 3.1.3 单片机工作的主要功能：.................................................................20 3.2 系统硬件设计................................................................................................21 3.2.1 工作电压模块.....................................................................................21 3.2.2 电压信号调理模块.............................................................................25 3.2.3 单片机控制模块.................................................................................27 3.2.4 MOSFET 驱动模块............................................................................ 33 3.2.5 电压基准元.........................................................................................34 3.2.6 系统 pcb 图......................................................................................... 36
KEY WORDS：A / D sampling ，AT89C51 Microcontroller ，grid detection
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本科毕业设计论文
目录
第一章 绪论..................................................................................................................5 1.1 研究背景：......................................................................................................5 1.2 国内外发展状况：..........................................................................................5 1.3 自动并网技术的优势与危害：......................................................................8 1.4 自动并车控制器的研究意义:.........................................................................9
第二章 总体结构........................................................................................................10 2.1 系统方案概述................................................................................................10 2.2 系统总体设计...............................................................................................10 2.2.1 系统的硬件设计方案.........................................................................10 2.2.2 系统的软件设计方案........................................................................10 2.3 发电机自动并网装置：................................................................................11 2.3.1 发电机自动并网原理：.....................................................................11 2.3.2 注意事项：.........................................................................................12 2.4 发电机：........................................................................................................13 2.4.1 发电机简介：.....................................................................................13 2.4.2 同步发电机：.....................................................................................14
This paper introduces the performance indexes and operation principles of AT89C51, and will use AT89C51 as a core to design a grid-connected control system which could detect and monitor the grid voltage. This system is composed by working power supply module, single-chip device control module, voltage signal conditioning module, AD sampling module and MOSFET drive module.
关键词：AD 采样，AT89C51 单片机，电网监测
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本科毕业设计论文
ABSTRACT
Along with the development of economy and the development of high-tech indust ry, social power supply reliability and power quality have higher requirements.Now th e power industry relying on scientific research, and constantly improve the level of au tomation, the personnel quality requirements more stringent.College for the training o f high-quality electrical engineering professionals, we must strengthen the constructio n of laboratory, developed some reflect current industry characteristics of the experim ental device.In the national grid digital management background, microcomputer elect rical equipment will occupy the core ing AT89C51 single-chip microcomp uter as the core control experimental device, give full play to the advantages of single chip computer in real time control, in response to the current development trend of ele ctrical control equipment, can realize fast and accurate power generator.The experime ntal device is simple and flexible, and can be effectively applied to teaching practice, t o further strengthen the electrical engineering professional laboratory construction.
本文介绍 AT89C51 的性能指标和工作原理并将以 AT89C51 为核心设计一个 并网控制系统，使其能够对电网电压就行检测与监控。系统主要由工作电源模块、 单片机控制模块、电压信号调理模块、AD 采样模块和 MOSFET 驱动模块等组 成。
其中电源部分把 220V 电压转换成+5V 和-5V 给系统供电，单片机控制模块 根据检测电网发出控制指令，电压信号调理模块、AD 采样模块和 MOSFET 驱 动模块就电网电压实行实时监测。文中阐述了构成该系统的原理、硬件的实现方 法和软件的实现方法，还给出部分的原理图、电路图。