摘要
传统分布式光伏并网调压控制方法在改进一致性算法中对通信频率和迭代次数考虑不充分,导致在光伏并网调压控制时电压变化速度较慢且运行电压不稳定,无法高效且稳定地实施光伏并网调压控制,对此提出基于改进一致性算法的大规模分布式光伏并网调压控制方法。通过分析光伏并网动态调节功率电压变化曲线,评估大规模分布式光伏并网电压的偏移情况;通过简化复杂性支路模型,根据输出电流与电压关系,构建分布式光伏并网模型;调整通信频率和迭代次数等参数,引入电网电压与光伏并网点的非线性函数关系,从而改进一致性算法模型;通过电压灵敏度分析和集群划分结果,制定并实施统一的大规模分布式光伏并网调压控制策略。实验证明,该方法在对有载调压变压器进行调压控制时,电压变化速度较快且运行电压较稳定,电压偏差函数期望值在第50次迭代后达到最优。
Due to the fact that the traditional distributed photovoltaic grid-connected voltage regulation control method does not fully consider the communication frequency and the number of iterations in the experimental improved consistency algorithm,resulting in the slow voltage change speed and unstable operating voltage during the photovoltaic grid-connected voltage regulation control work,and the photovoltaic grid-connected voltage regulation control work cannot be implemented efficiently and stably.By analyzing the dynamic regulation power voltage curve of photovoltaic grid-connected,the offset of large-scale distributed photovoltaic grid-connected voltage was evaluated.By simplifying the complex branch model,a distributed photovoltaic grid-connected model is constructed according to the relationship between output current and voltage.Parameters such as communication frequency and iteration times were adjusted,and the nonlinear function relationship between grid voltage and PV grid-connected points was introduced to improve the consistency algorithm model.Based on the results of voltage sensitivity analysis and cluster division,a unified large-scale distributed photovoltaic grid-connected voltage regulation control strategy is formulated and implemented.Experiments show that the proposed method has a fast voltage change speed and a stable operating voltage when the on-load voltage regulator transformer is controlled,and the expected value of the voltage deviation function reaches the optimal expected value after the 50th iteration.
作者
于心泽
宋金徉
YU Xinze;SONG Jinyang(Shandong Tailei Electrical Co.,Ltd.,Jinan 271100,China;Shandong Hengwei Electric Power Equipment Co.,Ltd.,Jinan 271100,China)
出处
《电工技术》
2025年第16期141-144,共4页
Electric Engineering
关键词
改进一致性
分布式光伏
通信频率
灵敏度分析
集群划分
improved consistency
distributed photovoltaics
communication frequency
sensitivity analysis
cluster division
