Voltage Variation Source Identification System

Hamzah, Muhamad Zainal (2019) Voltage Variation Source Identification System. Project Report. Universiti Teknikal Malaysia Melaka, Faculty of Electrical Engineering. (Submitted)

Text (24 Pages) Voltage Variation Source Identification System.pdf - Submitted Version Download (1MB)

Abstract

In this report, the power quality (PQ) disturbance which is the voltage variations consist of voltage swell, sag and interruption are model and analyse. Different types of voltage variations PQ disturbances models are developed and created by using MATLAB/Simulink. The Simulink model are display in terms of time-frequency representation (TFR). The Simulink models include shutting down enormous capacities from system to resemble voltage swell, large loads energizing and three-phase fault to simulate voltage sag as well as implementing permanent three-phase fault to simulate voltage interruption. The signals generated are analysed by using linear time-frequency distribution (TFD). The signal parameters such as root mean square voltage (Vrms), total harmonic distortion (THD) and power value are estimated from the TFR to identify the characteristics of the voltage variation. The results of analysis on the PQ disturbance waveforms generated are identical to the actual real-time PQ signals and the models can be modified to any desired situation respectively. The PQ waveforms obtained are suitable to be further analysed.

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