Incorporation of Uncertainties in Radial Distribution System Load Flow with Voltage-dependent Loads

Author: Das, Biswarup

Source: Electric Power Components and Systems, Volume 37, Number 10, October 2009 , pp. 1102-1117(16)

Publisher: Taylor and Francis Ltd

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In this article, application of interval arithmetic is proposed for considering the uncertainties of the input parameters in the power flow solution of a balanced radial distribution system with voltage-dependent loads. The uncertainties in both the feeder parameters and the load demands have been considered. The feasibility of the proposed method has been tested on two different balanced radial distribution systems by comparing the results obtained by this technique with those obtained by repeated power flow solutions. Further, it is also shown that the use of voltage-dependent loads (as compared to constant power loads) in an interval load flow solution provides more accurate estimation of the bus voltage limits.

Keywords: interval arithmetic; load flow; radial distribution system; voltage-dependent loads

Document Type: Research Article


Affiliations: Department of Electrical Engineering, Indian Institute of Technology, Roorkee, Uttarakhand, India

Publication date: October 1, 2009

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