ECONOMIC DISPACH USING LAGRANGE MULTIPLIER APPROACH CASE STUDY DIESEL POWER PLANT (PLTD) PT. SUMBER REJEKI POWER
DOI:
https://doi.org/10.51401/altron.v2i02.3253Keywords:
Economic Dispatch, Lagrange Multiplier, Diesel Power Generation, MATLABAbstract
PT. Sumber Rejeki Power is one of the power generation industries that provides the availability of electrical energy in the Sumbawa archipelago which has 3 diesel engines, each of which can generate 7 to 8 MW of electrical power, while the fuel used by the Diesel Power Plant (PLTD) PT. Sumber Rejeki Power uses marine fuel oil (MFO) thermal fuel. However, the cost of producing electrical energy in PLTD is relatively more expensive. Therefore, optimization in managing production and use of fuel in PLTD is needed to reduce operational costs and increase generation efficiency. In this study, researchers used the Lagrange Multiplier method. The results of economic dispatch using the Lagrange multiplier method resulted in a more expensive total production cost of Rp. 1,216,566,690 when compared to the results of the Real system production cost of Rp. 1,126,714,500 during a 24-hour period on May 14 2023. This is caused by the calculation of economic dispatch using the lagrange multiplier method which results in more expensive costs because the lagrange multiplier uses optimum conditions that optimize the generator output for each unit of generating block
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