ABSTRACT
The physical structure of most power systems consists of generation facilities feeding bulk power into a high-voltage bulk transmission network that in turn serves any number of distribution substations. A useful approach to classification of loads is by breaking down the broader classes into individual load components. This process may altogether eliminate the distinction of certain of the broader classes, but it is a tried and proven technique for many applications. There are essentially two approaches to load modeling: component based and measurement based. Load modeling research has included both approaches. The accuracy of the polynomial form deteriorates when the voltage falls significantly its nominal value when the coefficient ao is non zero. Strictly power-flow based solutions utilize load models that include only voltage dependency characteristics. Voltage is varied using a suitable means and the measured real and reactive power consumption recorded.
