Transient stability distributed simulation method of electric power system

Abstract

The invention relates to a transient stability distributed simulation method of an electric power system, belonging to the transient stability analysis technical field of the electric power system; the transient stability distributed simulation method is characterized in that: variable dimension of boundary coordination equation is reduced to one half of that of a partitioning method based on connecting line by using the partitioning method based on a node decomposing method, so as to improve the simulation efficiency; the accurate initial Jacobi inverse matrix is obtained by using a boundary perturbation method, so as to reduce iterations; the calculation process is accelerated by comprehensively adopting the methods that the boundary node voltage value of the next time step is pre-estimated and the Jacobi inverse matrix is coordinated and dynamically updated simultaneously in multiple time steps; by adopting coordination algorithm based on inverse Broyden quasi-Newton method, the solving times of the boundary coordination equation are reduced greatly, so as to improve the simulation efficiency. In the technical proposal, the data interface is simple, the data transmission capacity is low, the system model is simplified, superlinear convergence speed close to the newton method is provided, and hyper real-time simulation can be realized in a wide area communication network, therefore, the method is conveniently applied to the practical electric power system.

Description

technical field [0001] A distributed simulation method for transient stability of a power system belongs to the technical field of distributed simulation of a power system, and more specifically relates to a distributed simulation algorithm for transient stability of a power system. Background technique [0002] my country's regional power grid interconnection is constantly strengthening. In order to maintain the safe and efficient operation of the interconnected large system, it is necessary to carry out integrated and non-simplified simulation analysis of the entire network. Distributed transient stability simulation can effectively integrate various heterogeneous computing resources, and obtain consistent simulation results of the entire network while maintaining the computing independence of the regional dispatch center. It is an effective way to realize the integrated simulation analysis of the interconnected power grid. [0003] At present, the research on distributed ...

AI Technical Summary

Problems solved by technology

However, the biggest difficulty currently exists is the long communication time during the simulation

This is because the distributed transient stability simulation between dispatching centers needs to be carried out in the wide-area power communication network, which has limited bandwidth (generally 2Mbps) and high communication delay (generally tens to more than one hundred milliseconds), while Distributed transient stability simulation often requires a large number of communications, which will inevitably lead to low simulation efficiency

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