毕业设计电气吴之亮(最终).docVIP

电能质量分析及其监测系统的硬件设计 摘 要 电能质量监测仪是一种用于监测电网运行状态的的工业仪表。它能提供电压、电流、有功功率、无功功率、频率等电能质量基本参数的实时监测，而且能对电力系统的谐波、三相电压不平衡度、电压波动和闪变等电能质量指标进行分析，为电力部门对电能质量的监测提供了强有力的支持。 本文主要研究分析谐波对电力系统的影响，现有谐波或电能质量监测（或检测）方法优缺点，实现电能质量参数快速、准确监测的硬件系统的设计。研究电能质量监测的硬件系统，包括以下几个基本功能模块的设计：单片机微处理器模块，数据测量与转换电路，计算并送终端设备显示电路，通信转换电路等。希望通过对电能质量监测的硬件系统的设计，以实现对三相谐波电流和电压的基波和各次谐波、功率因数、有效值、有功、无功参数的计算、显示等功能。 关键词：电力系统，电能质量监测，谐波，硬件设计 The Hardware Design of Power Quality Analysis and Monitoring System ABSTRACT The Power quality monitor is a kind of measuring instrument monitoring the operation state of electric power in industry，which can provide the real-time monitoring of the basis parameters of power quality such as voltage，electric current，active power，reactive power and frequency，and more over， can analyze the indexes of power quality such as power harmonic，three phase voltage asymmetry and grid harmonic voltage fluctuation and flicker for the fake of providing the better support for Electric Power department monitoring Power quality. In this paper, we main force on the harmonic impact on the power system, the advantages and disadvantages of existing harmonics or power quality monitoring (or testing) method, to achieve the hardware system design of rapid, accurate monitoring of power quality parameters. We main research the hardware system of power quality monitoring, including some designs of the basic functional modules: single-chip microprocessor module, data measurement and conversion circuits, calculated and sent to terminal equipment display circuit, Communication Converter, etc. we hope that through the design of the hardware system of the power quality monitoring, to achieve the functions of the fundamental and harmonics of current and voltage of the three-phase harmonics, power factor, RMS, active parameters, reactive parameters and the display. Keywords: Power system, power quality detection, harmonic, Hardware design 目 录 摘要 ………………………………………………………………………………………… Ⅰ ABSTRACT …………………………………………………………………………………… Ⅱ