Abstract:
Bangladesh Power System (BPS) does not use optimization technique to
schedule its generating units. This results in higher production cost. Moreover, the
hydro potential of Kaptai is not utilized properly to generate electricity. This thesis
evaluates the production cost of BPS considering appropriate generation scheduling
and exhaustive use of hydro potential.
This thesis uses dynamic programmll1g (DP) method for the generation
scheduling. It neglects the transmission loss. A multi-state model of Kaptai hydro
plant is developed using the historical data of water head of Kaptai reservoir and
forced outage rate (FOR) of the units of the plant. The input output characteristics of
the units of BPS are not readily available. These characteristics are developed by
collecting data from different power stations. The startup and shutdown cost of the
generating units are also collected.
This thesis evaluates production cost of BPS for four cases. First case
considers only the thermal power generating units optimally scheduled using DP and
hydro units are scheduled as peak shaving unit. All the thermal generating units of
BPS are optimally scheduled and the hydro unit is scheduled as energy limited (El)
unit in the second case. In both cases, first and second, the duration of study is
considered to be 2006. The production.cost savings is calculated by comparing the
actual energy production cost of2006. In the third case the production cost of2006
is evaluated using segmentation method, which considers merit order loading based
on average incremental cost of the units and neglecting startup and shutdown cost.
The results are compared with those obtained by optimal scheduling of the units by
DP method without considering startup and shutdown costs. The fourth case
evaluates the energy generation cost of BPS for a period from 2007 to 2025 using
DP optimal scheduling approach. The savings in production cost is evaluated by
comparing with that obtained using merit order loading.
