Decentralized voltage optimization method based on distributed power generation cluster

Abstract

The invention relates to a decentralized voltage optimization method based on a distributed power generation cluster. The method comprises: establishing a distributed power generation cluster power network model, constructing a distributed optimization algorithm: proposing an improved distributed gradient algorithm based on a distributed gradient descent algorithm, performing distributed optimization control on each cluster center point, and performing voltage optimization control in the distributed power generation cluster. On the basis of a traditional distributed gradient descent method, adistributed algorithm utilizing relative state symbols is provided, information exchange between nodes is reduced on the premise that the convergence speed is not reduced, and the robustness to an uncertain state is improved. According to the multi-cluster-oriented decentralized voltage optimization control method provided by the invention, voltage coordination control among a plurality of distributed power generation clusters in a power distribution network is realized by taking a distributed consistency algorithm as a basis and cluster economic optimization as a target.

Description

technical field [0001] The invention relates to the field of distribution network control, in particular to a decentralized voltage optimization method based on distributed power generation clusters. Background technique [0002] Due to the characteristics of distributed power generation, its large-scale access to the distribution network may have a great impact on the safe operation of the power grid and the economic benefits of distributed power generation, and cannot maximize the resource benefits of the whole society. Therefore, it is necessary to effectively manage and control distributed power, and increase the economy of distributed power while reducing security and stability risks. [0003] The traditional distributed power control mode adopts the method of grid dispatching to individually control all distributed power sources, which has high requirements for communication and poor economy. With the development of information, communication, and network technologies...

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Problems solved by technology

However, at present, cluster control at home and abroad mostly stays in the design stage. Although there are preliminary attempts to apply cluster control engineering in China, they are all aimed at the control of large-scale wind farms. The research on the cluster control architecture of distributed power sources is still in its infancy.

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