The Better Optimization Technique for the Placement of DG In Order To Reduce Overall Cost of Power System
Subin Sunny1, P.Balaji2
1Subin Sunny, Electrical and Electronics Engineering, Paavai Engineering College, Namakkal, (Tamil Nadu), India.
2P. Balaji, Electrical and Electronics Engineering, Paavai Engineering College. Namakkal, (Tamil Nadu), India.
Manuscript received on May 24, 2013. | Revised Manuscript received on June 13, 2013. | Manuscript published on June 30, 2013. | PP: 159-162 | Volume-2, Issue-5, June 2013. | Retrieval Number: E1734062513/2013©BEIESP
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Abstract: In a radial distribution system, the voltages at buses decrease and losses increase with increasing distance from the substation. DG can be utilized to overcome these problems. DG can deliver a portion of real and/or reactive power for reducing feeder current and thus improving both voltage profile and transmission efficiency. However, studies also shows incorrect placement of DG would lead to higher losses than the losses without DGs. This paper focuses on maximizing the net saving by minimizing the energy loss cost while considering installation and running cost of the Distributed generators. Both GA and PSO algorithms are used to find the optimal locations and sizes of DG. The obtained results are discussed and compared to each other. The proposed method is programmed and tested in a 33 bus distribution system using MATLAB software. For load flow analysis of the distribution network, forward backward sweep algorithm is used.
Keywords: Voltage Profile Improvement, Genetic Algorithm, Particle Swarm Optimization, Distribution Generators, Forward/Backward Sweep Algorithm.