Dynamic random scheduling control method for power distribution network containing micro-grid

Abstract

The invention discloses a dynamic random scheduling control method for a power distribution network containing a micro-grid. The method is a dynamic random scheduling control method of comprehensively considering the minimal planned operation cost of the micro-grid and the distribution network. The method comprises the following steps: firstly, respectively building chance-constraint programming models for the minimal expected planned operation cost of the micro-grid and the distribution network, and determining the chance-constraint programming models by a particle swarm optimization algorithm and a two-point estimation method; searching a power exchange value with the minimal comprehensive expected planned operation cost by the particle swarm optimization algorithm according to a power exchange control interval, between the micro-grid and the distribution network, obtained by respective optimization results of the micro-grid and the distribution network, so as to determine the optimal dynamic random scheduling control scheme of the micro-grid and the power distribution network; and finally validating the practicability by an improved IEEE 33 node standard system algorithm.

Description

technical field [0001] The invention relates to a dynamic random scheduling control method of a distribution network including a microgrid. Background technique [0002] Micro-grid (Micro-Grid) is a small power system that integrates power generation, transmission, and distribution. become an important part of the smart grid. As more and more microgrids are connected to the distribution network, it is of great theoretical and practical significance to study the dynamic dispatching of distribution networks including microgrids. [0003] At present, most of the domestic and foreign studies on microgrid access to distribution network are independent, or study the optimal dispatch of microgrid alone, or study the optimal dispatch of distribution network alone. While researching microgrid dispatch control in existing technologies, the security and economy of the distribution network are not considered, and the one-sided pursuit of maximizing the economic benefits of the microgr...

AI Technical Summary

Problems solved by technology

While researching microgrid scheduling control in existing technologies, the security and economy of the distribution network are not considered, and the one-sided pursuit of maximizing the economic benefits of the microgrid may affect the security of the distribution network operation.

On the other hand, research on the joint dispatching mode of multi-microgrid and distribution network considers system network loss, load fluctuation and microgrid operation economy, and establishes a two-layer optimization model for joint operation, which partially realizes the joint operation of microgrid and distribution network. However, this method optimizes the distribution network first, and then optimizes the microgrid with a fixed value of the power exchange value between the distribution network and the microgrid. Although it can maximize the economic benefits of the distribution network, it does not consider the safety of the microgrid operation. Sex and economic benefits, can not maximize the overall benefits of microgrid and distribution network

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