【作者】 胡庆有；

【导师】 王倩；

【作者基本信息】 西南交通大学 ， 电力系统及其自动化， 2013， 硕士

【摘要】 随着大量的风电场和太阳能光伏电站的建设完成,为了减弱单一风电场或者光伏电站并网后输出功率的波动间歇特性造成的影响,提高可再生能源电力的并网率,风电场和光伏电站集群互补入网调度与控制已逐步开始应用。由于风电场和光伏电站的并网增加了系统中的不确定量,使得系统更加复杂更加难以应对,为了及时正确的应对系统中风电、光伏电力以及负荷的波动性,系统的运算处理速度就显得尤为关键。对含有大规模风光互补电力的电力系统进行动态经济调度的研究,就是在保证系统安全稳定可靠运行的前提下,考虑到系统中的各种约束条件,使系统的经济实用性达到最佳。本文针对风电场和太阳能光伏电站互补并网,首先分析了风能和太阳能资源的特性,风力发电系统和太阳能光伏发电系统的数学模型。然后,针对火电机组的排污特性引入环境污染惩罚项,针对风电场和太阳能光伏电站输出功率的间歇波动特性引入备用容量惩罚项,同时考虑了电力系统动态经济调度中的系统供需平衡、机组爬坡率等约束建立了含有风光互补电力的电力系统动态经济调度数学模型。接着以等耗量微增率准则为核心,分析推导了高速动态经济调度算法。根据风能和太阳能的天然互补特性,给出了风电场和光伏电站的互补调度策略,并以风电和光伏电力同负荷一起作为“广义负荷”,给出了考虑风光互补调度策略的高速动态经济调度新算法。最后,在IEEE-30节点测试系统中,应用新高速动态经济调度算法,对实例进行了动态经济调度,验证了模型和新调度策略的合理性及优越性。仿真结果表明,新高速动态经济调度算法能够快速的解决含有大量可再生能源电力的电力系统动态经济调度问题,风光互补调度策略可以平抑单一风电的出力波动,提高风电和光伏电力的并网率。更多还原

【Abstract】 Wind and solar power have natural complementary characteristics. With the completion of the construction of large number of wind and solar photovoltaic power plant, in order to reduce the fluctuation of output power of intermittent characteristics of single wind or photovoltaic power grid integration and improve the renewable energy power grid-connected rate, connecting wind power and photovoltaic power station cluster complementary to grid scheduling and control have gradually began to be applied. Wind power and photovoltaic power station increased the uncertainties in the system, making the system more complex and more difficult to deal with. Processing speed is particularly important to properly deal with the fluctuation of wind power as well as photovoltaic power and load. Research on the dynamic economic dispatch of power system contain large capacity’s wind-photovoltaic complementary power, is to guarantee the stable security and reliable operation of system, taking into account the various constraints in the system, so that the utility system to achieve the best.This paper in the light of connecting wind farm and solar photovoltaic power station complementary to grid, Firstly, quiet analysis the wind and solar energy resources, and introducing the mathematical model of wind power generation system and solar photovoltaic power generation system. Then, introducing punitive measures to thermal power unit because of it’s output pollute the environment, and to wind and solar photovoltaic power station because of their output is intermittent fluctuation add the requirement of spare capacity. At the same time, Considering the supply-demand balance, unit ramp rate etc constraints of the dynamic economic dispatch of power system formed the mathematical model of power system dynamic economic dispatch with wind-photovoltaic complementary grid-connect. Secondly, With equal consumed energy ratio criterion as the core, deduce and analyse the high speed dynamic economic dispatch algorithm. According to the complementary characteristics of wind and solar power, proposed wind power and photovoltaic power complementary dispatch strategy. Treating wind power and photovoltaic power with the load as "generalized load", give new high-speed dynamic economic dispatch algorithm consideration of wind-photovoltaic complementary dispatch strategy. Lastly, In the IEEE-30node test system, using new high-speed dynamic economic dispatch algorithm deal with the practical examples, verified the rationality of the model and scheduling policies and the superiority of new high-speed dynamic economic dispatch algorithm. The results show that, new high-speed dynamic economic dispatch algorithm can fast solve dynamic economic dispatch problem of power system containing large amount of renewable power, wind-photovoltaic complementary dispatch strategy can stabilize the fluctuation of output of single wind power, and increasing the rate of Grid-connected wind power and photovoltaic power.更多还原