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An approach for daily assessment of active power reserve capacity and spinning reserve allocation in a power system

In this paper a new algorithm for determination of optimal active power reserve capacity requirements and energy and spinning reserve allocation in power system during the 24 hours is presented. In the proposed method, the optimum amount of reserve capacity per hour is determined proportional to network security level required by the system operator. In this way, it is essential to define a proper index for measuring system security. Thus, we have used Expected Load Not Served (ELNS) to evaluate system security in each hour. The proposed method has been implemented over the IEEE 24-bus test system and the results are compared with a deterministic security approach, which considers certain and fixed amount of reserve capacity in each hour. This comparison is done from economic and reliability points of view. The promising results show the effectiveness of the proposed model which is solved using mixed integer linear programming (MILP) and GAMS software is used.