Dynamic sub-transmission system expansion planning incorporating distributed generation using hybrid DCGA and LP technique |
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| Affiliation: | 1. Technical Engineering Department, University of Mohaghegh Ardabili, Ardabil, Iran;2. Department of Electrical Engineering, Islamic Azad University, Abhar Branch, Abhar, Iran;1. Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong;2. School of Electrical and Information Engineering, The University of Sydney, NSW 2006, Australia;1. North Carolina State University, Raleigh, NC 27695, USA;2. Southern California Edison, Westminster, CA 92705, USA;3. California State University, Los Angeles, CA 90032, USA;1. Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China;2. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, China;1. College of Electrical and Information Engineering, Hunan University, Changsha, China;2. School of Information Science and Engineering, Central South University, Changsha, China |
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| Abstract: | Since the emerging of distributed generation (DG) technologies, their penetration into power systems has provided new options in the design and operation of electric networks. In this paper, DG units are considered as a novel alternative for supplying the load of sub-transmission system. Thus, the mathematical model of considering DG on the expansion planning of sub-transmission system is developed. Fix and variable costs of the plan and the related constraints are formulated in the proposed model. The proposed objective function and its constraint are converted to an optimization problem where the hybrid decimal codification genetic algorithm (DCGA) and linear programming (LP) technique are employed to solve it. Solution of the proposed method gives the optimal capacity of substations; optimal location and capacity of DGs as well as optimal configuration of the sub-transmission lines. To demonstrate the effectiveness of the proposed approach, it is applied on a realistic sub-transmission system of Zanjan Regional Electrical Company, Iran, and the results are evaluated. |
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