电能质量检测仪.docVIP

毕 业 设 计（论 文） 题 目 基于LABVIEW的电能质量监测仪设计 姓 名 周攀 学 号 0710211214 所在学院 电气与电子工程学院 专业班级 07电气2班 指导教师 余瑜 日 期 2011年06月06日 摘 要 目前，供电企业和用户开始高度重视对电网电能质量监测的问题。一方面是因为影响电能质量的因素日益增多，如今广泛使用非线性设备和电力电子装置，使电网中的电流和电压波形发生畸变，导致电能质量的恶化。另一方面，各种精密、复杂的，对电能质量敏感的电气设备的普及，使人们对电能的可靠性及其质量的要求与日俱增。因此，研究供电质量监测的方法，找出导致电能质量下降的原因具有重要的工程和理论价值。本论文设计并给出了以测控领域的必威体育精装版技术——虚拟仪器平台为基础的电能质量监测系统。该系统能够对电流、电压、频率、相位、电网谐波、三相电压不平衡度、电压波动和闪变等电能质量参数进行实时地监测，并且具有在线分析功能。本文是使用美国NI公司开发的图形化开发软件LABVIEW进行系统程序构建，结合使用NI公司的配套设备PCI-6024E（数据采集卡）以及传感器、变送器等硬件设备，组建了一套电能质量监测仪系统。 关键词：电能质量，在线监测系统，LABVIEW，虚拟仪器 Abstract Power quality is an essential concern of electrical utilities and customers. On one hand, the factors which affect the power quality are increasing, for example, the distorted wave of voltages and currents caused by the extensive application of power electronic apparatus and nonlinear equipment has worsened the power quality. On the other hand, the popularity of the complicated, exactitude and power quality-sensitive electricity appliances has made power quality more important. Research on the power quality monitoring and analysis method is of great value in both theory and practice.This paper was designed based on the latest technology in control field - power quality parameters monitor system on the virtual instrument technology platform. It can monitor electric power parameters including voltage, electrical current, phase, frequency, three-phase voltage unbalance, harmonic and the voltage fluctuation and flicker, and can also provide detailed power quality analysis in realtime. This paper is to use American NI companys graphical LABVIEW software to built the system,by using a combination of construction program NI company auxiliary equipment PCI - 6024E (data acquisition card) ,sensor and transmitters hardware equipment, established a set of power quality monitoring with precis measurement ability . Keywords: power