Parallelized power distribution network reconstruction method and system

Abstract

The invention relates to a parallelized power distribution network reconstruction method and system, and the method comprises the steps: dividing a power distribution network reconstruction problem into three stages: a network decomposition process, a ring-level reconstruction process and a merging process, dividing the parallelized power distribution network reconstruction system into sub-networks with the same number as loops, building a ring-level reconstruction model of each sub-network, adopting a branch switching method, calculating the on-off state of the interconnection switch and the on-off state of the section switch in each sub-network, extracting the on-off states of the interconnection switches and the on-off states of the section switches of the uncompressed loops in all the sub-networks to form the reconstruction result of the parallel power distribution network, so that parallel network reconstruction is achieved, the calculation time of network reconstruction is effectively shortened, and the network reconstruction efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of distribution network reconfiguration, in particular to a parallelized distribution network reconfiguration method and system. Background technique [0002] Distribution network reconfiguration is based on one or more network operation objectives, such as the minimum network loss, on the premise of meeting the distribution network radial operation and voltage, transmission line operation requirements, to find the tie switch and section switch in the distribution network. optimal off state. The reconfiguration problem is affected by the switch state and the network power flow. The switch state is a binary variable, while the network power flow is a continuous variable, which makes the solution of the distribution network reconfiguration problem face challenges. With the widespread access of distributed photovoltaics to the distribution network and the increasing scale of the distribution network, t...

AI Technical Summary

Problems solved by technology

The reconfiguration problem is affected by the switch state and the network power flow. The switch state is a binary variable, while the network power flow is a continuous variable, which makes the solution of the distribution network reconfiguration problem challenging.

With the widespread access of distributed photovoltaics to the distribution network and the increasing scale of the distribution network, traditional heuristic and mathematical calculation algorithms require a long calculation time and are difficult to cope with the rapid changes in photovoltaic power generation.

Moreover, traditional algorithms are mostly centralized algorithms, which need to occupy too many computing resources when facing large-scale networks.

However, most of the existing research on distributed algorithms requires a time-consuming iterative process or a layered serial execution architecture, which is inefficient.

Existing parallel reconstruction methods are mostly aimed at heuristic algorithms, and assign each child generated in the heuristic algorithm to different processors for parallel computing. Since the heuristic algorithm still requires a serial process, that is, in the heuristic algorithm The next generation is based on the previous generation, and the calculation efficiency is still not high

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