An area of an interconnected power system has two fossil fuel units operating on economic dispatch. The variable operating costs of these units are given by C = 10P, + 0.008P? $/hr C2 = 8P2 + 0.009P $/hr Where P, and P, are in megawatts and are subjected to following constraints 100 < P, < 600 MW 400 < P2 < 1000 MW Total transmission losses for the power system are given by P = 0.00015P? + 0.00002P,P2 + 0.00003P MW For area 1 = 16.00 $/MWhr Determine a. The output of each unit b. Total transmission losses c. Total load demand, and d. Total operating cost

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Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.