Abstract
This paper discusses optimal planning problems for dispersed generating sources so as to give a guideline of their introduction to power systems. First, a recursive method is developed from the viewpoint of supplying electric power only, in which solutions for one unit are superposed. The computational loads are decreased by selecting alternatives of busses based on the so-called penalty factor. However, for effective utilization of dispersed generating sources, it is indispensable to consider their thermal merits in addition to electric power. After applying the Khun-Tucker theory to the optimal dispatching problem including boiler fuel costs, thermal values of the dispersed generating units are evaluated quantitatively. Finally, the above-mentioned technique for the optimal planning is also effective basically and is extended into this case. The validity of the proposed algorithms are demonstrated using a real-scale model system.
