摘要
光伏电站建模时,光伏电池种类可能不同。在保证精度的情况下,对不同类型光伏电池进行聚合将有助于建立更简化的光伏电站等效模型。针对不同类型光伏电池,提出了2种等效建模方法,一种是将光伏电站按电池种类分群,对不同类型光伏电池进行直接等效。另一种根据光伏电池的有功功率及输出电压,根据按容量加权等效方法,直接聚合等效。另外,提出通过调整逆变器外环电压控制的参考值来改善等效模型中无功差异较大的问题。通过算例,验证了2种方法均能较好拟合出详细模型的动态特性。
When building the model of photovoltaic power station,the types of photovoltaic cells may be different.In the case of ensuring the accuracy,the aggregation of different types of photovoltaic cells will help to build a more simplified equivalent model of photovoltaic power plants.The paper proposes two equivalent modeling methods for the photovoltaic power station under different types of the photovoltaic cells.One is classifying the photovoltaic power station by the type of cells,attaining the equivalent model directly under different types of the photovoltaic cells,the other one is according to the active power of the photovoltaic cells and output voltage,attaining the equivalent aggregation model directly based on weighting by volume.In addition,the paper improves the equivalent model with big difference in reactive power by adjusting the reference value of the inverter outer loop voltage control.Simulation results show that both methods can fit the dynamic characteristics of the detailed model.
出处
《陕西电力》
2015年第12期27-32,37,共7页
Shanxi Electric Power
关键词
光伏电站
等效建模
光伏电池种类
容量加权法
无功优化
photovoltaic power station
equivalent modeling
photovoltaic cell type
weighting by volume
reactive power control
