PRODUCTION COST EVALUATION OF PUMPED STORAGE POWER STATION AND OPTIMIZED UTILIZATION OF RESERVOIR IN ELECTRICITY MARKET
LONG Jun (Electrical Engineering College, Guangxi University, Nanning 530004, Guangxi Zhuang Autonomous Region, China)
According to two probabilities, i.e., the forced outage rate and the outbidding rate of generating sets and based on Monte-Carlo stochastic simulation model, a stochastic production cost model for pumped storage power station is put forward. On the basis of this stochastic model a mathematical model for production cost evaluation of pumped storage power station is presented and the dynamic utilization strategies of reservoir, including the optimal power generation strategy of generating sets and the optimal pumping strategy of pumping sets, under the competition condition are researched. To solve this cascade optimization problem, a feasible algorithm based on stochastical theory and optimization method is given. Taking the simulation result of a practical problem for example, the bidding strategy and utilization strategy of pumping storage reservoir are explicated.