发电技术2024，Vol.45Issue(2)：273-281,9.DOI:10.12096/j.2096-4528.pgt.22172
考虑概率分布的分布式光伏无功下垂控制策略
Droop Control Strategy of Distributed Photovoltaic Reactive Power Considering Probability Distribution
摘要
Abstract
Distributed photovoltaic access to the distribution network has gradually become a trend,but the large-scale distributed photovoltaic grid connection will cause serious power flow reversal,resulting in out-of-limit voltage and network loss increase.Aiming at the out-of-limit voltage problem generated by distributed photovoltaic access to distribution network,a distributed photovoltaic reactive power droop control strategy considering the probability distribution was proposed.Firstly,the influence of probability distribution of photovoltaic output on the current active power of different photovoltaic units of photovoltaic power plants was considered,and the available reactive capacity of each photovoltaic inverter was evaluated and calculated.Then,the reactive power droop coefficient was adjusted according to the current available reactive capacity of each photovoltaic unit,and the reactive power support capacity of the photovoltaic power station was maximized without sacrificing active power.Finally,the effectiveness of the proposed control strategy was verified by PSCAD/EMTDC simulation software.关键词
分布式光伏/电压越限/光伏概率分布/无功电压控制/下垂控制Key words
distributed photovoltaic/out-of-limit voltage/photovoltaic probability distribution/reactive power and voltage control/droop control分类
能源科技引用本文复制引用
钱乙卫,田浩,刘财华,田昕泽,周霞,戴剑丰..考虑概率分布的分布式光伏无功下垂控制策略[J].发电技术,2024,45(2):273-281,9.基金项目
国家自然科学基金项目(61933005). Project Supported by National Nature Science Foundation of China(61933005). （61933005）
