PMU measurement-based active power distribution network-oriented network partitioning method

Abstract

The invention discloses a PMU measurement-based active power distribution network-oriented network partitioning method. The method comprises the following steps: 1, establishing an operation constraint condition of a partitioned microgrid cluster; 2, positioning a faulty island area; 3, dividing a basic microgrid meeting operation constraints; 4, calculating an equivalent circuit of the basic microgrid according to the measurement data acquired by the PMU; 5, determining candidate microgrid clusters according to all the basic microgrid combinations which may be combined; 6, calculating an operation factor of the candidate microgrid cluster set according to the equivalent circuit of the region; and 7, calculating a target function, and selecting an optimal cluster from the candidate microgrid clusters. According to the method, the optimal partition topology can be obtained without a topological structure and equipment parameters of a network model, so that partitions can be adjusted intime when a feeder line at a certain position of the active power distribution network fails, the failure duration of the power distribution network is shortened, and the economic loss is reduced.

Description

technical field [0001] The invention relates to the field of active distribution network fault partitioning, specifically a PMU-based network partitioning method for active distribution networks, which is suitable for failures in random areas in active distribution networks without the need for network models Topological structure and device parameters can get the best partition topology. Background technique [0002] Active distribution network is a highly integrated, fully interconnected and communication-capable electrical system. Compared with the traditional distribution network, the active distribution network can actively control the operation state of the power grid and realize active management of controllable resources to solve the problems of grid compatibility and large-scale intermittent renewable energy application. During normal operation, the active distribution network supplies power to users through the transmission network and distributed generation equip...

AI Technical Summary

Problems solved by technology

However, the model of this scheme abstracts distributed power generation equipment into PQ nodes, and the accuracy and practicability are easily affected by the intermittent behavior of distributed power generation equipment.

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