A Non-Iterative Decomposition Coordination Dynamic Scheduling Method for Transmission and Distribution Network

Abstract

The invention relates to a non-iterative decomposition and coordination dynamic scheduling method of a power transmission and distribution network, belonging to the technical field of power system operation. This method integrates the dynamic scheduling models of the transmission network and the distribution network, and expresses the dynamic scheduling model of the transmission and distribution network coordination in the form of a matrix. For the dynamic scheduling model of transmission and distribution coordination in the form of a matrix, each distribution network calculates the function of the local optimal cost about the boundary injection power, and transmits it to the transmission network. The transmission network combines the local optimal cost function of each distribution network for global optimization. The following The injected power at the boundary of each distribution network obtained through optimization is used, and then each distribution network is independently dispatched. The method of the invention does not require repeated iterations between the transmission network and the distribution network, adopts an asynchronous structure, reduces the dependence on communication and algorithm complexity, has high algorithm execution stability, and is beneficial to practical application.

Description

technical field [0001] The invention relates to a non-iterative decomposition and coordination dynamic scheduling method of a power transmission and distribution network, belonging to the technical field of power system operation control. Background technique [0002] The development of distributed power generation and active distribution network has brought many challenges to the operation of the power grid, and the coordinated scheduling of transmission network and distribution network has become a development trend. Since the transmission network and the distribution network are managed by independent operators, it is difficult to carry out the coordinated dispatching of the transmission network and the distribution network in a centralized manner. Therefore, it is necessary to develop a dynamic dispatching method for the decomposition and coordination of the transmission and distribution network. Most existing transmission and distribution network decomposition coordinat...

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Problems solved by technology

[0003] The patent application number 201710087438.1 proposed by the applicant discloses a dynamic economic scheduling method based on multi-parameter planning for the coordination of transmission and distribution networks. This method uses repeated iterations between the transmission network and the distribution network for transmission and distribution. The disadvantage of the dynamic scheduling of power grid coordination is that repeated iterations between the transmission and distribution networks require continuous information interaction, which is highly dependent on communication between the transmission and distribution networks, and the execution of the method is vulnerable to communication failures, congestion, etc. influences

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