  Optimally operating an integrated electricity-gas system (IEGS) is
significant for the energy sector. However, the IEGS operation model's
nonconvexity makes it challenging to solve the optimal dispatch problem in the
IEGS. This letter proposes an improved Benders decomposition (IBD) algorithm
catering to a commonly used steady-state dispatch model of the IEGS. This IBD
algorithm leverages a refined decomposition structure where the subproblems
become linear and ready to be solved in parallel. We analytically compare our
IBD algorithm with an existing Benders decomposition algorithm and a typical
piecewise linearization method. Case studies have substantiated the higher
computational efficiency of our IBD algorithm.
