placement sub-transmission substation considering load uncertainty

چکیده مقاله

Main goal of distribution networks design and expansion is to respond to electricity consumption growth with the most efficiency, while not contravene the constraints governing the system. High amount of investment and along with the ever-increasing demand for energy and equipment price growth make the designers concentrate on more precise and suitable ways to design these networks. Appearance of distributed generation in distribution systems in addition to change in operation stages of these systems has provided the ability for these companies to design systems with lower cost. To gain this goal, the design of distribution systems should be revised. This paper presents a new method to obtain the number, location, capacity and servicing area of each sub-transmission substation through candidate and available substation locations, considering the possibility of DG installation on any of load centers, where The uncertainty of forecasted load of each load center is considered as a fuzzy model. In this method the optimization is performed using genetic algorithm with constraints including voltage drop, substations and DGs loading capacity and unidirectional connection between substations and loads.

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