Economic Dispatch with Transmission Losses in a Distributed Generation Network of Bahawalpur

Ahmad Khan, Zeeshan Rashid, Farhana Umer, Abdur Rehman Yousaf, Arif Saeed


In an electrical power system, the ultimate aim is to generate and deliver electrical energy to consumer side with minimum cost involved. As there are a number of ways to generate electrical power such as wind, solar, thermal etc. and different fuel costs and incremental fuel costs associated with them. So, least fuel cost, effective unit commitment, least transmission losses involvement are desirous to achieve economic dispatch in a distributed generation network. In this research, we are committed to do study of economic load dispatch with transmission losses consideration in a distributed generation network of Bahawalpur since earlier, there is no consideration of economic load dispatch in Bahawalpur. As different fuel cost, incremental fuel cost and transmission losses involve with each power station, designing an algorithm considering all these factors and then giving optimal combination is the ultimate solution to achieve economic load dispatch of Bahawalpur district. A MATLAB algorithm is designed in this research paper which gives optimum division of power between two thermal power plants with consideration of transmission losses as well. The two power plants considered here are thermal power plant Muzafargarh and Kot Addu Power Company (KAPCO), the former being located at smaller distance from Bahawalpur district. Then, at the end, load trend of Bahawalpur district, optimum generation verses power demand, associated transmission losses, penalty factor for each generation level and fuel cost economy using the algorithm is shown in results section through graphs and tables. It is concluded that thermal power plant shares higher contribution of load power due to smaller distance from load and thus smaller transmission losses ensuring minimum cost operation.

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