风气互补发电系统的内部机组组合问题研究

RESEARCH ON INNER UNIT COMMITMENT OF HYBRID POWER SYSTEM COMBINING WIND FARM WITH SMALL GAS TURBINE POWER PLANTS

提出风气互补发电系统,利用燃气轮机的快速启停特性来弥补风电场的出力波动。在已有的互补发电系统容量配比的基础上,通过建立风气互补发电系统内部机组组合问题的优化模型,利用遗传算法,得到了内部燃气轮机机组组合结果,为本系统的工程实践提供了理论基础。

Because of the stochastic characteristic of natural wind speed, the output fluctuation from wind farm will bring lots of bad impact on power grid when the large scale wind farm is connected to grid directly. It＇ s hardly to eliminate this imapct only by wind farm itself. A novel wind/gas turbine hybrid power system, which the fast start-up and closedown characteristics of gas turbines were used to compensate the output fluctuation from wind farm, was presented in the paper. The unit commitment among several gas turbine power plants in the hybrid power system is one of the problems to be in- vestigated. Based on capacity proportion and unit commitment optimal model of hybrid power system, the result of unit commitment among gas turbine power plants was obtained by genetic algorithm. The research provided the theoretic foun- dation for the engineering practice on this wind/gas turbine hybrid power system.