Multiple Time and Space Scale Reactive Power Optimization for Distribution Network with Multi-Heterogeneous RDG Participating in Regulation and Considering Network Dynamic Reconfiguration
Yan Xiangwu, Xu Yun
Key Laboratory of Distributed Energy Storage and Microgrid of Hebei Province North China Electric Power University Baoding 071003 China
Abstract：The locality of voltage distribution, diversity of load/power characteristic and pulsation of active power determine that the voltage and reactive power regulation of the distribution network needs “multi-level coordination and step-by-step refinement” in the time domain and the spatial domain. A multi-time-space-scale reactive power optimization model for distribution network is established. In the spatial domain, the coordination of “global collaborative optimization”, “zonal self-regulation” and “global coordinated regulation” is carried out, and network dynamic reconstruction is integrated into the global collaborative optimization. Herein, the “feasible domain” is optimized; and dynamic partitioning and self-regulation is performed based on the modularity function and dynamic reactive reserve index to achieve “partition autonomy”; the partition autonomy control results return to the global level for system-wide detection and coordinated control to improve control accuracy. In the time domain, the global synergistic optimization is 1d cycle 1h granularity, the partition self-regulation is 5min granularity, and the model predictive control “predictive model”, “rolling optimization” and “feedback correction” is embedded in each layer to achieve the “partition layer by layer” optimization control of space-time coupling. Finally, the IEEE 33-node system is taken as an example for simulation analysis. The results show that the model built in this paper achieves granular control in both spatial and temporal domains, which shows significant engineering application value.
颜湘武, 徐韵. 考虑网络动态重构含多异质可再生分布式电源参与调控的配电网多时空尺度无功优化[J]. 电工技术学报, 2019, 34(20): 4358-4372.
Yan Xiangwu, Xu Yun. Multiple Time and Space Scale Reactive Power Optimization for Distribution Network with Multi-Heterogeneous RDG Participating in Regulation and Considering Network Dynamic Reconfiguration. Transactions of China Electrotechnical Society, 2019, 34(20): 4358-4372.
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2019, Vol. 34 
