Linearization method of large scale unit commitment problem with network constraints
Lizi Zhang · Power System Protection and Control · 2010
To improve computational efficiency of unit commitment(UC) problem,linearization method is put forward.First object function is linearized through piecewise-linear method,startup cost is treated as constraints which are also linearized,and network security constraints are linearized through direct current(DC) flow model,so a complete mixed integer linear programming unit commitment model is built.Then the model is solved through a popular CPLEX solver.Different examples show that calculation is very fast when the dual gap is reasonable,and the above-mentioned method can improve computational efficiency to solve large scale unit commitment problem.