Abstract:
Two most important steps in generation expansion planning process are:
the evaluation of reliability indices and production cost. Because of the non
existent operating cost of the hydro units,. special care is taken in planning
so that these units are used upto their capacity. This makes the simulation of
hydro unit different from the thermal unit. The complexity in simulation increases
if the hydro unit is energy limited and it grows further if more than
one energy.limited hydro units compete for the same position in the loading
order. Again the possible energy generation by a energy limited hydro unit is
It
a deterministic quantity only for a reservoir of smaller (limited) capacity
for abundant water supply to the reservoir. However,this is not the case for
most of the situations.
This thesis presents a methodology of scheduling any number of energy
limited hydro units competing for the same position in the loading order. ';!'his
method is an extension of the conventional approach of simulating energy
limited hydro units. This thesis also presents a novel approach of scheduling
energy limited unit. This approach takes into account the randomness in energy
constraints of hydro unit by developing a probabilistic model of water levels
and water flows of the reservoir or of run of river. The developed
methodologies are applied to IEEE Reliability Test System and Bangladesh Power
System. In the numerical evaluation, the segmentation method is utilized.
