Abstract
AbstractLoad modelling is a very important issue for the power system analysis. It affects the results of the several simulations such as a transient analysis, voltage stability, load shedding amounts and etc. And it is very difficult to describe the load models because there are so many components which have different characteristics in the loads. KEPCO installed the power quality measurements on 154 kV industry sites and measured voltage, current, active power and reactive power. In this paper, an automatic load modelling system which uses those data is presented. It includes an algorithm for estimating load model parameters of two induction motors and ZIP load model. Parameters of load model are calculated automatically and are accumulated in the load modelling automation system server. The results of parameter estimation using the data of the real power system are also shown.
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