Abstract
In this paper, a new iterative algorithm for unique optimal deterministic solution, selected from fuzzy environment, in the integrated distribution management system real-time functions, is presented. The integrated fuzzy algorithm simultaneously finds solution of the consumer node load estimation, Var/Volt coordination and load flow problems. As fuzzy variables, the effective current and power factor of consumer nodes and source-node voltage are considered. The topology and parameters of the distribution system, as well as, on/off switching of shunt capacitors and the adjustment of off-nominal turn ratios of transformers, are considered as crisp variables. For determination of the most credible defuzzified solution, the minimum operator procedure applied on active loss minimization, subject to ‘soft’ voltage constraints in the different type of consumer nodes (commercial, industrial and residential), is used. Proposed integrated fuzzy model is tested on a real-life distribution system.
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