A parallelized power distribution network reconfiguration method and system

Abstract

The invention relates to a parallelized distribution network reconfiguration method and system. The distribution network reconfiguration problem is divided into three stages: network decomposition, ring-level reconfiguration and merging process, and the parallelized distribution network reconfiguration system is divided into three stages. The number of sub-networks is the same as the number of loops, the ring-level reconstruction model of each sub-network is established, and the branch switching method is used to calculate the open state of the tie switch and the open state of the segment switch in each sub-network, and extract all sub-networks. The open state of the tie switch of the uncompressed loop in the network and the open state of the segmented switch constitute the reconstruction result of the parallelized distribution network, which realizes the parallelized network reconstruction and effectively reduces the calculation time of the network reconstruction. Improve the efficiency of network reconstruction.

Description

technical field [0001] The 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 requirements of distribution network radial operation and voltage and transmission line operation, to find the tie switches and segment switches in the distribution network. optimal disconnection state. The reconfiguration problem is affected by the switching state and the network power flow, in which the switching state is a binary variable, while the network power flow is a continuous variable, which makes the solution of the distribution network reconfiguration problem a challenge. As distributed photovoltaics are widely connected to the distribution network and the scale of the distribution netw...

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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