Abstract:
HVDC systems have recently found increasing importance in
integration of Renewable energy (RE) into the grid for they provide long
distance bulk power transmission by overhead lines with various
economic advantages. The proposed 1045 km, 500kV HVDC Ethiopia –
Kenya Bipole will provide transmission of Wind power from the Lake
Turkana Wind Power Project (LTWWP) to Juja Substation in Nairobi,
Kenya. In this paper, multi objective dynamic economic dispatch
(MODED) with RE and HVDC transmission lines is proposed. All the
possible AC and DC constraints are also formulated and considered.
Probalistic load flow (PLF) is used to determine the HVDC, RE and other
system parameters while the uncertainties and variability of the
renewable sources are modelled using scenario based method (SBM).The
problem is then solved using Improved Genetic Algorithm(IGA). For
MODED with RE, HVDC lines have a better ability to control power
flow, decrease transmission line losses and increase the capability to
maintain voltage stability. There has to a trade-off between the
environmental benefits and slight increase in optimal cost in using
HVDC grids.
