Combinatorial Optimization Model of Transmission Network Planning Projects Considering Comprehensive Benefit

Abstract

During the medium and short term transmission network planning process, the planning department of power grid will get a large number of planning projects to be selected. These projects have passed the feasibility study. However, it is necessary to select some projects in case of the limited investment funds. At present, the selection of the projects basically relies on expert experience in practical engineering. However, with the increasing number of the projects to be selected, it is more and more difficult to select the projects scientifically and reasonably only relying on expert experience. To date, the existing research methods are not enough to cope with the optimization of the planning projects. In view of the existing problems, this paper puts forward two concepts, Reliability Benefit Coefficient and Project Urgency, to measure the Reliability Benefit of the projects. Combine Reliability Benefit with Economic Benefit as the Comprehensive Benefit, based on which a new combinatorial optimization model of transmission network planning projects is established. It provides a scientific and reasonable method for the combinatorial optimization of the transmission network planning projects. The validity of the method is verified in a case finally.