Design and Data Processing of a Real-Time Power Quality Monitoring Instrument
Power quality(PQ) monitoring is an important issue to electric utilities and many industrial power customers. This paper presents a new distributed monitoring instrument based on Digital Signal Processing (DSP) and virtual measuring technology. The instrument is composed of EOC module, Feeder Control Unit(FCU) and Supervision Unit(SU). EOC module is used to implement the data acquisition and high speed data transmission of busbar voltage; FCU performs data acquisition and processing of feeders; sU based on virtual measuring technology is used to further analyze and process power quality parameters, achieves data storage and management. Wavelettransformation which is implemented into SU detects transient power quality disturbance, while digital filtering, windowing, the software fixed-frequency sampling method, linear interpolation and Fast Fourier Transformation(FFT) are realized by DSP. Therefore, the monitoring instrument not only implements real-time, comprehensive high-precision and management for all power quality parameters, but also helps confirm source of the disturbance, improve the quality of power supply and increase the stability performance of power system.
Power quality Wavelet-transform data acquisition FFT EOC.
Zhenghua Zou Yongqiang Liu Fuqiang Zhao Mingzhi Peng
School of Electric Power,South China University of Technology Guangzhou 510640,Guangdong Province,Ch Guang Zhou Nikey Electric Technology Coltd Guangzhou 510640,Guangdong Province,China
国际会议
2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)
北京
英文
3581-3585
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）