Optimization of the Power System Operation Security in Power Market Environment

It is favorable to the reducing of the power rate to keep a reasonable security of the power system operation.For the market regimes of maximum social benefits and maximum the grid company's profits,the paper proposes respectively two kinds of optimal security models and a kind of practical algorithm.In the new models,the network structure,the operation mode,the ancillary service price,the outage loss and the loadshedding price have influenced on purchase of the auxiliary service,and then influenced the systematic operation security.The simulated results of a reliability test system show that the method is feasible.