Design And Development Of Real Time Power Quality Monitoring System

Noor Athira, Abidullah (2013) Design And Development Of Real Time Power Quality Monitoring System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The increasing of sensitive electrical equipment in our technologies is the biggest issues contributor to power line system. The quality of electrical power supplied becomes more concern to customers or electric users. The power quality events will affect manufacturing process, failure of equipment and economic losses. The developments that have been used today are not user friendly and costly. In addition, the equipment that available in the market cannot monitor and stored the data efficiently. Then, the user cannot check the performance of the power line system. This project presents a design and development of real time power quality monitoring system. The system can measure, display and record parameters as well as classify power quality signals from power line system. The measured parameters are calculated from voltage and current signal such as root mean square (RMS) voltage and current, real power, apparent power, reactive power, frequency and power factor. In addition, by using these parameters, the power quality signals such as swell, sag, interruption, under voltage and over voltage are classified based IEEE standard 1159-2009. The voltage and current signals are captured by using NI USB 6009 data acquisition (DAQ) system to convert the analogue signal to digital and then transfer to computer. The DAQ system is chosen because some of its characteristic available gives great advantages upon its usage for this project. Small and portable of physical size can easily bring and move from one place to another place. In addition, the usage of USB as a communication link between personal computer and NI USB 6009 is convenient for either use with laptop or desktop, thus no external supply is needed because it is powered by USB. Besides that, user friendly software is developed on computer by using Visual Basic 2006 to calculate, display, classify and record the power quality signals parameters. This project also shows high accuracy monitoring system that presents very low absolute percentage error (APE) measurements and suitable for power quality monitoring purpose.

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