含可再生分布式电源参与调控的配电网动态分区实时无功优化方法

可再生分布式电源高比例接入，其出力随机性叠加负荷波动性，极大地增加了配电网无功电压调控难度。结合风电、光伏等可再生分布式电源的动态无功调节特性，提出配电网动态分区实时无功优化方法。基于配电网辐射状结构特性，根据支路末端节点性质逆向初步合并，以最大模块度函数为衡量指标进行初始分区，并根据实时运行状态和无功储备约束调整分区，形成可满足动态无功调节的最佳分区方案，然后执行分区实时无功电压调控。最后，以IEEE33节点系统为例通过MATLAB编程进行仿真分析，结果表明:日内实时控制与动态分区相结合，有效提高系统无功电压控制快速性和精确性。

Dynamic Partitioning Real-Time Reactive Power Optimization Method for Distribution Network with Renewable Distributed Generators Participating in Regulation

With high proportion of renewable distributed power access to distribution network,the difficulty of reactive power and voltage regulation is increased greatly by its random output overlapped with load fluctuation.By considering dynamic reactive voltage regulation characteristics of renewable power sources such as wind power and photovoltaic,a dynamic partitioning real-time reactive power optimization model for distribution network is proposed.Based on the radial structure characteristics of distribution network and the reverse preliminary merging according to the nature of branch terminal nodes,the initial partition is performed with the maximum modularity function as the metric.The partition is adjusted according to the real-time operating status and the reactive reserve constraint to form the optimal partition scheme.Then the partitioning realtime voltage is regulated.Finally,the simulation analysis is carried out by MATLAB programming with the IEEE-33 node system as an example.The results show that the combination of intra-day real-time control and dynamic partitioning can effectively improve the speed and accuracy of system reactive voltage control.