基于测试和运行数据的新能源快速调频参数动态修正算法

随着新能源发电接入电力系统比例的不断提升,电力系统对新能源发电参与系统一次调频提出了具体要求.频率调差系数是评估新能源电站一次调频调节量的重要指标,系统对于新能源电站的调差率是预设的.然而系统发生频率波动时,无法预知新能源电站的运行状态,单一控制参数下新能源电站无法保证调频量满足系统需求.鉴于此,本文提出了基于调频量闭环控制的新能源电站一次调频控制参数动态修正方法,根据新能源电站的运行状态,动态调整其频率调差系数,使得新能源电站运行在不同状态下均可以满足调频要求,支撑系统频率稳定性.

Study on parameters real-time revising of primary frequency modulation of renewable energy power station using test and operation data

With the continuous increase of the proportion of renewable energy power generation connected to power system, the power system has put forward specific requirements for the primary frequency modulation of the renewable energy power generation system. The frequency droop coefficient is an important index for evaluating the amount of primary frequency adjustment of the renewable energy power generation station. The frequency droop coefficient of the system for the renewable energy power generation station is preset. However, when the frequency of power system fluctuates, it is impossible to predict the operation status of the renewable energy power generation station. Under a single control parameter, the renewable energy power generation station cannot guarantee that the frequency modulation amount can meet the system requirements. Therefore, a real-time correction method for the primary frequency modulation control parameters of the renewable energy power generation station is proposed, based on the closed-loop control of the frequency modulation. According to the operating state of the renewable energy power generation station, the frequency droop coefficient is adjusted in real time, so that the renewable energy power generation station can meet the frequency regulation requirements in different states and support system frequency stability.