基于分区的含DG配电网实时无功优化

针对含DG配电网实时无功优化问题,提出了更适合该问题的目标函数,并将实时无功优化与配电网动态分区、短期无功调度相互配合来实现空间上和时间上的解耦。针对配电网动态分区问题,提出了支路切割枚举法,实现了快速动态分区。考虑系统区内无功储备不足等特殊情况,可能会导致系统电压在优化后仍有越限,为保证系统安全,启动第二次优化。通过对含DG的33节点配电系统算例和某实际线路进行验证,表明了该算法在求解实时无功优化问题时的正确性和有效性。

Real-time reactive power optimization in distribution network with DG based on partitions

In view of real-time reactive power optimization of distribution network including DG, this paper provides a more appropriate object function and coordinates real-time reactive power optimization with dynamic partitioning of power distribution network and short-term reactive power dispatch in order to achieve decoupling of time and space. As for dynamic partitioning of power distribution network, branch cut enumeration is proposed to achieve rapid dynamic partitioning. In case that system voltage is out of limit after optimization due to insufficient reactive power reserve in the system realm or other problems, the second optimization is initiated to ensure the safety of the system. Through verifying the calculation examples of 33-node distribution system including DG and a practical circuit, the algorithm proposed turns out valid and effective in solving real-time reactive power optimization.