Probabilistic modeling of three-phase voltage unbalance caused by load fluctuations

Three-phase voltage unbalance is a frequently encountered disturbance that deteriorates the quality of power supply in electric distribution systems. The present work aims at studying and modeling of random variation of voltage unbalance through in situ measurement and Monte Carlo simulation. The probabilistic model of voltage variation would be helpful to effectively improve the quality of electric power and to the development of engineering recommendations/standards concerning voltage unbalance.