电能质量在线分析仪的研制

电能质量在线分析仪是一种基于数字信号处理技术和计算机技术的虚拟仪器，适用于单、三相电能质量的在线测量。与传统分析仪相比，它实现了长期自动运行，实时测量分析，历史数据管理等功能，具有操作简单、处理能力强，图形输出等优点，主要介绍了该装置的基本结构，硬件和软件设计，详细说明了如何利用傅里叶分析进行数据的实时处理，以及采用多线程编程的软件设计思想。

Development of online power quality analyzer

The online power quality analyzer is a new type of virtual instrument based on dig ital signal pro cessing and com puter tech nolo gies.It is suitable for sin gle-phase or three-phase power quali ty on line measure ment .It imple ments the functions of automatic long-term operation,re al-time measure ment and analysis,and man age ment of historic data.Compared with the tradi tional analyzer,it has the ad vantages of easy control,en hanced processing ability and graph ics output .Its basic archi tec ture,HW&SW design are introduced.The re al-time data pro cessing based on Fourier analysis and the software design con cept using multithread pro gram ming are emphasized.