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Wind-Thermal-Nuclear-Storage Combined Time Division Power Dispatch Based on Numerical Characteristics of Net Load

机译:风热核储存组合时分电力分配基于净负载的数值特征

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In order to satisfy the strategic needs of energy sustainable development, renewable energy has developed rapidly and the power systems have been transformed to a new generation of power systems. In the renewable energy power generation technologies, the fastest developing wind power generation are highly intermittent and fluctuating. When high penetration of renewable power connects to the power grid and participates in the system dispatch, there will be more difficulties and challenges in the energy balance control. In this paper, a wind-thermal-nuclear-storage combined time division power dispatch strategy based on numerical characteristics of net load is proposed, where a specific thermal generating mode and an unconventional nuclear generating mode are discussed. In the strategy, the dispatch time division method is introduced in detail and the sample entropy theory is used to calculate the net load complexity. An adaptive thermal generating mode is determined according to the numerical characteristics of the net load. The nuclear generating modes of constant power operation, time division operation, and net load tracking time division operation are compared and analyzed, respectively. Finally, the wind-thermal-nuclear-storage combined time division power dispatch strategy aiming at decreasing the ramping power of thermal generators is achieved, and the increasing of the participation of pumped storage and improving of the continuous and steady operation time of thermal generators are realized. The experiment simulation is developed on an actual provincial power system in the northeast of China. The results verify that the thermal generator ramping power in the case based on SampEn are reduced, and the participation of pumped storage is improved. When both of the thermal generating mode and nuclear generating mode are according to the changing of net loads, the ramping powers of thermal generators are further decreased.
机译:为了满足能源可持续发展的战略需求,可再生能源发展迅速,电力系统已转变为新一代电力系统。在可再生能源发电技术中,发电最快的风力发电是高度间歇性和波动的。当可再生电源的高渗透连接到电网并参与系统派遣时,能量平衡控制将会有更多的困难和挑战。本文提出了一种基于净负荷数值特性的风热核储存组合时分电力调度策略,其中讨论了特定的热发电模式和非常规核生成模式。在该策略中,详细介绍了调度时分方法,并使用样本熵理论来计算净负载复杂性。根据净负载的数值特性确定自适应热生成模式。比较和分析恒定功率操作,时分操作和净负载跟踪时间划分操作的核产生模式。最后,实现了旨在降低热发电机的斜坡功率的风热核储存组合的时分电力调度策略,并且泵送存储的参与的增加以及改善热发电机的连续和稳定操作时间意识到。实验仿真是在中国东北的实际省级电力系统开发的。结果验证了基于Sampen的情况下的热发电机斜坡功率降低,并且泵浦存储的参与得到改善。当两个热发电模式和核发生模式都是根据净负载的改变时,热发电机的斜坡功率进一步降低。

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