Active power distribution network reconstruction algorithm and device based on improved teaching optimization

Abstract

The invention discloses an active power distribution network reconstruction algorithm and device based on improved teaching optimization, and the algorithm comprises the following steps: (1), definingthe minimization of an active power transmission loss expected value as an objective function, and obtaining the active power transmission loss expected value; (2) introducing an adaptive teaching factor and a self-learning mechanism on the basis of a traditional teaching optimization algorithm; and (3) adopting a non-repetitive spanning tree strategy to quickly optimize and reconstruct the powersupply path of the distributed power supply. The apparatus includes a computer-readable storage medium on which a computer program is stored, the program being executed by a processor with respect toa program. In the active power distribution network with a distributed power supply, the fluctuation of the output of the wind driven generator and the photovoltaic system is considered; an improvedteaching optimization algorithm introducing an adaptive teaching factor and a self-learning mechanism is proposed by taking the minimum network loss as an objective function, so that local optimization is avoided when a complex problem is processed, the operation speed and the global search capability can be improved, and the active power distribution network reconstruction algorithm and device are more suitable for optimization of a power supply path of a power distribution network.

Description

technical field [0001] The invention relates to an active distribution network reconfiguration algorithm and device based on improved teaching optimization, and belongs to the technical field of distributed power supply protection and control. Background technique [0002] As more and more distributed power sources are connected to the grid, the uncertainty of distributed power sources may cause large fluctuations in the voltage of the distribution network, resulting in overvoltage. This increases the complexity of the distribution network and makes distribution network reconfiguration difficult. However, the grid does not exclude these distributed energy resources. The active distribution network can efficiently utilize renewable energy and realize the flexible control of two-way power flow. Therefore, how to realize the reconstruction strategy of the active distribution network including distributed generation is the key. Contents of the invention [0003] The purpose ...

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Problems solved by technology

[0003] The purpose of the present invention is, in order to avoid falling into local optimum when dealing with the fluctuation of wind power generator and photovoltaic system output in the active distribution network containing distributed power, the present invention proposes an improved method based on The teaching-optimized active distribution network reconstruction algorithm and device improve the calculation speed and global search ability, and are more suitable for the optimization of the power supply path of the distribution network

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