分布式光伏阵列随机干扰识别方法研究

RESEARCH ON THE METHOD OF RANDOM DISTURBANCE IDENTIFICATION OF DISTRIBUTED PHOTOVOLTAIC ARRAY

为实现分布式光伏阵列随机干扰的有效识别,提高光伏出力预测的准确性,该文以江苏省某光伏企业为案例,分析分布式光伏阵列间距和随机干扰对光伏容量系数模型计算值的影响特点,建立分布式光伏阵列随机干扰识别模型,并结合工程实测数据进行模型的验证,进而实现分布式光伏阵列随机干扰的识别。研究表明,该方法能够较准确实现光伏系统随机干扰的识别,为实现智能光伏系统的出力预测、故障识别奠定基础,可在一定程度上提高光伏发电系统运行效益。

In order to realize the effective identification of random disturbance for distributed PV array,and to improvethe accuracy of PV output prediction,this paper analyzes the influence characteristics of distributed PV array distancesand PV capacity factor on random disturbance,establishes the random disturbance identification model of distributed PVarray,also validates and optimizes the model based on the measured data of a PV enterprise in Jiangsu province. Theresults showed that the method can accurately realize the identification of random disturbance of PV system,which canlay a foundation for the output prediction and fault identification of intelligent PV system,and improve the operatingefficiency of photovoltaic power system in a certain extent.