中文摘要：

当前大型光伏电站自动功率控制算法没有针对不同用电量进行相应的功率控制,且易受到光照的影响,导致功率控制效果不佳,稳定性较差。为此,提出一种新的不同用电量时大型光伏电站自动功率控制算法,给出大型光伏电站功率分层控制系统结构。在用电量相对较高的用电量时,采用平均分配算法对大型光伏电站功率进行自动控制;在用电量相对较低的用电量时,采用关停光伏逆变器技术和开启光伏逆变器技术对大型光伏电站功率进行控制。在保证大型光伏电站功率平稳过渡的情况下,给出关停逆变器技术的实现过程。当光伏阵列中的某一阵列接收到的发电功率目标值呈上升趋势时,开启逆变器。实验结果表明,所提算法不仅控制效果佳,而且稳定性高,不易受到光照的影响。

英文摘要：

At present, the automatic power control algorithm for large scale photovoltaic power station does not correspond to the power control at different time interval of power consumption, and it is easy to be affected by light, result in that power control effect is not good, and the stability is poor. So, a new automatic power control algorithm for large scale photovoltaic power station at different power consumption is proposed, the structure of power hierarchy control system for large scale photovoltaic power plant is presented. At relatively high power consumption time interval, using shutting down photovoltaic inverter technology and open the PV inverter technology to control the power of large photovoltaic power station. In the case of a large photovoltaic power plant to ensure a smooth transition, the implementation process to exit stop inverter technology. When the target value of the received power of a certain array in the photovoltaic array is increased, then turned on the inverter. Experimental results show that, the proposed algorithm not only has better control effect, and with high stability, not easy to be affected by illumination.