SCGS is a high-dimensional, nonconvex, mixed-integer
programming problem, and it is extremely difficult to obtain
the exact optimal solution. Great effort has been made in
studying the generation scheduling problem over the past
decades. Many formulations have been established and many
methods, such as Lagrangian Relaxation [2]-[6] and
mixed-integer programming [7]-[10] are developed for
solving the SCGS problems.
Reference [2], [4] described the direct method based on LR
for the generation scheduling where transmission constraint
was formulated as a set of linear constraints. Reference [11],
[12] proposed Benders decomposition algorithms to
decompose SCGS into a master problem and hourly security
checking subproblems. Reference [13] presented the
necessary and sufficient conditions to determine the feasibility
of dual solutions in LR framework. Reference [14] proposed a
LR-based algorithm for the long-term SCGS problem.
Reference [15] proposed a MIP based algorithm to solve the
SCGS problem for large-scale power systems with heuristics
to speed up the calculation. These literatures have achieved
great success in solving the SCGS problems.