Abstract:
The basic objective of economic dispatch operation of power systems is “the
distribution of total generation of power in the network between various regional zones;
various power stations in respective zones and various units in respective power stations
such that the cost of power delivered is a minimum." In the cost of power delivered, the
cost of power generation and transmission losses should be considered. This paper
presents a novel technique to solve the economic dispatch problem of all thermal power
systems, where the system states and control variables are considered fuzzy which is the
case in reality. Formulas for the middle and spread of power generation and
transmission losses as well as for fuzzy incremental fuel cost are derived. These fuzzy
formulas are solved at different degrees of fuzziness and the results are reported in the
text of the paper.