Power quality detection in low voltage power systems

11 ABSTRACT Master of Science Thesis POWER QUALITY DETECTION IN LOW VOLTAGE POWER SYSTEMS ŞENER A?ALAR Anadolu University Graduate School of Natural and Applied Sciences Electrical and Electronics Engineering Program Supervisor: AssistProf. Doğan Gökhan ECE 2003, 83 pages In this study, power quality which has been getting importance by the development of technology is described; also the factors that affect power quality are considered and the disturbances caused by these factors are analyzed. The data needed for power quality analysis have been acquired from the experimental power distribution network and analyzed by the help of Lab VIEW software. Two different methods are proposed to detect and analyze power quality disturbances. First, Multi-Resolution Analysis is used with Wavelet Transform and then the Symmetrical Components are used. Virtual instruments are formed for analyzing the acquired data with both Wavelet Transform and Symmetrical Components techniques. With the results of the experiments performed in the experimental set, two methods are compared. The results of the two different methods are interpreted and then suggestions about power quality analysis are made. Keywords: Power Quality, Wavelet Transform, Symmetrical Components, Virtual Instrument, Lab VIEW