徐钢,吴熙,范子恺,顾文,李辰龙.基于关联分析的光伏电站无功控制能力评估[J].电测与仪表,2017,54(12):. Xu Gang,Wu Xi,Fan Zikai,Gu Wen,Li Chenlong.Relation analysis-based synthetic evaluation of reactive power control ability for photovoltaic power stations[J].Electrical Measurement & Instrumentation,2017,54(12):.
基于关联分析的光伏电站无功控制能力评估
Relation analysis-based synthetic evaluation of reactive power control ability for photovoltaic power stations
With the development of photovoltaic power generation, and with the increasing need of photovoltaic power stations (PVPS) to participate in power grid reactive power and voltage regulation, the evaluation of reactive power control ability of PVPS, which has attracts additionally attentions for its great significance. However, current research on the evaluation of reactive power control ability is still in its infancy and faces more difficulties, further investigations are needed to carry on several aspects, including evaluation indexes construction, index weight determine and relation analysis-based comprehensive evaluation. In this study, a novel dynamic time warping (DTW) relation analysis-based reactive control ability evaluation method for PVPS, it establishes comprehensive evaluation index system and solves the corresponding weight assignment problem based on analytic hierarchy process (AHP), it also transforms the reactive power control indicators evaluation problem into distance correlation matching problem. The proposed DTW algorithm is applied to achieve relation analysis and calculate the correlation matching coefficients among the standard, reference and evaluation index sequences, then the reactive power control level can be determined and the comprehensive classification evaluation can be executed. Simulation results of typical PVPS are illustrated to demonstrate the effectiveness of the proposed DTW-based method.
