中压配电网多目标分布式优化控制策略

The Multi-Object Distributed Optimization Control Strategy of Medium Voltage Distribution Networks

分布式优化控制具有鲁棒性高,可扩展性强等优点,在高渗透率分布式电源接入的中压配电网的控制中得到了越来越广泛的应用。该文基于分布式电源分组合作的模式,设计了适用于中压配电网的多目标分布式优化控制策略。首先给出配电网分布式优化控制的系统框架和多个优化目标;然后针对中压配电网R/X较大的实际,分别以有功/无功功率利用率为一致性变量,设计了分组实现节点电压控制和配电网有功功率控制,以及全局合作实现配电网无功功率控制的分布式优化控制算法,给出了算法参数的整定方法;最后通过在IEEE 33节点系统中的算例结果验证了该方法的正确性和有效性。该文为实现高渗透率分布式电源接入的中压配电网分布式优化控制提供了技术参考。

Distributed control is more appreciated in the field of optimal operation of medium voltage distribution networks with high penetration of distributed generations, due to its advantages of high robustness, easy extensibility and so on. This paper studies a multiple objects optimization control strategy for medium voltage distribution networks on the basis of distributed generations grouping cooperation. To cater for the fact that a medium voltage distribution network has a larger resistance/reactance ratio, the distributed algorithms for node voltage control and active power control in grouping cooperation mode with the consistency variable of active power utilization ratio, and for reactive power control in global cooperation mode with the consistency variable of reactive power utilization ratio are proposed. The method for tuning the parameter values of the control strategy is presented. The correctness and validity of the proposed strategy are verified by numerical examples in IEEE 33-bus system. This paper provides a technical reference for achieving distributed optimization control of medium voltage distribution networks with high penetration of distributed generations.