跨流域补偿调节的梯级水电站主要参数优选

本文应用非线性规划,优选规划阶段的水电站群的主要设计参数,并提出了相应的数学模型和算法。这一模型能较好地适应水电系统大规模和非线性的特点,在考虑水电站群跨流域补偿调节的条件下,同时优选各个水库的正常蓄水位和死水位,同时优选各水电站的最佳装机规模及其装机程序,使规划期内全电力系统的总费用现值最小。 本文曾结合某电力系统,对分布在四个不同流域上的五座具有不同调节性能的水库,和十一个水电站所组成的系统,对待建水电站进行了参数优选,得到了比较满意的结果,已提供有关部门在规划阶段中参考。

Optimization of the parameters for cascade atations with interbasin compensating regulation

On the basis of existing mathematical models of choosing reservoir parameters, this paper for the first time suggests the use of nonlinear programming(NLP)model. When the construction sequence of cascade development is determined, NLP wil be used under the constrained conditions of reservoir storages, current discharges, installed capacities and annual power energy. With interbasin compensating regulation of some reservoirs and joint operations of some thermal plants in an electric system, by using NLP, it is possible at the same time to optimize the reservoir parameters under the objective function of minimizing the total cost of electric system. The model is capable of handling 1720 independent variables and 8660 linear and nonlinear constrained conditions. A case study of optimization of the cascade development projects on the Lancang River is discussed.