2.2 ECONOMIC SCHEDULING PROBLEM CONSIDERING LOSSES

The economic dispatch problem is defined as that which minimizes the overall operating cost of all generators, CT, of a power system while meeting the total load, PD, plus transmission losses, PL. Mathematically by the problem is defined as follows:

images

Where,

αi, βi, γi are the cost coefficients

Pi = real power generation by ith generating unit (for i = 1, 2, …,).

ng = Total number of generating units in power system.

Subject to the equality constraint the energy balance equation given as:

images

Where ...

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