【作者】 李丹；

【导师】 金新民；

【作者基本信息】 北京交通大学 ， 电力电子与电力传动， 2007， 硕士

【摘要】 “1MW风力发电变流器实验平台研制”是校211工程项目,能实现1MW的全功率变流器并网实验和600kW的PWM整流器和逆变器的组合实验。本课题作为该项目的一部分,主要进行风力发电变流器实验平台监控系统部分的设计,实现对整个实验平台的监控和保护。本文首先根据风电实验平台监控系统的要求进行系统的方案设计,将整个监控系统分为了数据采集系统和PLC控制系统两部分;然后进行数据采集系统的设备选型和硬件电路设计;在此基础上,基于VC++6.0的多线程技术,开发了数据采集系统的控制软件,实现对23路关键点电压、电流信号的实时采集、记录和分析,还具有功率测量,谐波分析,波形显示、存储和回放的功能;接下来,以PLCS7-200为核心开发了PLC控制系统,包括设备的配置、接线和控制软件等,实现对整个实验平台的操作控制和状态显示。整个监控系统功能强大、信息量丰富,人机界面友好且操作方便,实验过程中运行良好,达到了设计要求,证明了硬、软件系统设计的正确性和可行性。更多还原

【Abstract】 The project "1MW Wind-power Generation Converter Experiment Platform" is supported by 211 plan of our university. It can implement 1 MW rated experiment of two feeding inverter and 600kW rated rectifier-inverter combined experiment. As an important part of the whole project, this work aims to design and implement the monitoring and control system, realizing the supervising and protect of the plant.According to the requirement of the plant monitoring and control system, the detailed technical scheme is designed, in which the monitoring and control system is divided into data collecting & analyze subsystem and PLC control subsystem. First, the hardware circuit is designed and equipments are chosen. Then, based on multithreading technique of VC++6.0, the data collecting software is developed. It can realize data collecting, recording, and analyze of twenty-three key signals, as well as the function of power measurement, THD calculating, and waveforms display/memorize/recall. Second, the PLC control subsystem is developed based on PLC S7-200. It’s used to finish the control of the plant and display of plant states. In this part, the main task includes the configuration of the PLC, arranging the wire, and developing the software of PLC.The monitoring and control system has the feature of abundant supervising information, friendly interface and convenient operation. It works well in the practical experiments, can completely meet the design requirements, the hardware and software both have high reliability.更多还原