LOAD MODELING FOR DISTRIBUTION CIRCUIT STATE ESTIMATION

Due to the limited availability of telemetered data on distribution ci rcuits, an integral part of any practical distribution circuit state e stimator is a load modeling procedure that provides estimates of load demands at all circuit nodes. Traditional load modeling techniques use d for distribution power flows are designed for system peak studies, a nd are not suitable for providing real-time statistical load estimates , This paper presents a real time load modeling technique which incorp orates the use of customer class curves and provides a measure of the uncertainty (statistics) in the estimates. it also incorporates the po ssibility of multiple line flow measurements and makes use of customer billing information. The load modeling technique is combined with a p robabilistic distribution circuit state estimation algorithm. Results of the combined load modeling and state estimation algorithm are provi ded on an actual 934-bus distribution circuit illustrating its feasibi lity.