电力市场环境下独立发电商的机组优化调度

Optimal dispatching model of independent power producer units in electricity markets

针对火电机组的煤耗特性随着发电机的运行状况不断变化的特点,在满足发电运行的各种约束条件下,综合考虑发电会计成本,提出了电力市场环境下基于两部制电价成本的优化调度模型。根据独立发电商发电机数量较少和实际运行的特点,利用改进动态规划法,通过减少机组运行状态组合对其快速求解。采用上述模型对采用两部制电价的某电厂进行了仿真计算,结果表明该模型可明显提高大功率发电机组利用率,对节能减排和高效设备投资具有引导作用。

As to the character of coal consumption of coal-burning units varying with running state, on condition that kinds of constraint of generating operation are contented,this paper presents an optimal dispatching model based on two-part electricity price cost under electricity market, in which accountant cost of power plant operation is considered. According to the feature of independent power producer and its actual running state, an improved dynamic programming method which reduces the combined conditions is adopted. Simulation is made using the above model on an actual power plant which adopts two-part electricity price cost. It is shown that the model can increase the operation rate of high-power generator and has a leading role in energy-saving, reducing pollutant emission and investment of highly-efficient equipment.