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本文提出联合使用开发次序数学模型、补偿调节数学模型、电力系统电力电量平衡 计算模块和经济计算模块的方法,用以求解水电站群的最优开发次序.开发次序数学模 型是一个以电站个数为阶段变量的动态规划模型,其目标函数是在考虑水、火电站联合 运行并满足电力系统电力电量平衡的条件下使电力系统的总费用折算现值最小。补偿调 节数学模型是两个高维动态规划模型,利用逐步优化算法进行求解。 本文提出的这一方法有效地克服了求解大规模系统在计算机内存和计算时间方面的困难。利用这一方法求解了澜沧江中下游水电站的最优开发次序,计算结果是比较满意的。
In this paper, we propose a method to jointly use the mathematical model of development sequence, the compensation and adjustment mathematical model, the power system power balance calculation module and the economic calculation module to solve the optimal development sequence of hydropower station group. The objective function of the dynamic programming model of stage variables is to minimize the present value of the total cost of the power system under consideration of the joint operation of water and thermal power plants and to satisfy the power system power balance. Compensation adjustment mathematical model is two high-dimensional dynamic programming model, the use of step by step optimization algorithm for solving. This method proposed in this paper effectively overcomes the difficulty of solving large-scale systems in computer memory and computing time. This method is used to solve the optimal order of hydropower stations in the middle and lower reaches of the Lancang River. The calculation results are satisfactory.