A real-time digital hybrid simulation interface method based on frequency division impedance compensation

Abstract

The invention relates to a real-time digital hybrid simulation interface method based on frequency division impedance compensation. A studied power system network is divided into an electromechanicaltransient network and an electromagnetic transient network, simulation models of each network are established, the interface equivalent model of the electromechanical-electromagnetic transient networkis established according to frequency division impedance compensation interface algorithm, the corresponding data conversion model and interaction mode are established, and a real-time digital simulator is adopted to realize the electromechanical-electromagnetic transient real-time hybrid simulation. The method provided by the invention can effectively reflect the high-frequency characteristics of the electromechanical transient network and the dynamic interaction characteristics of the dynamic interface, meanwhile, the interface delay impedance compensation is introduced, the interface interaction delay is reduced, and the accuracy of the electromechanical-electromagnetic transient hybrid simulation is improved. The invention provides a solution for building a large-scale electromechanical-electromagnetic transient hybrid real-time simulation system.

Description

technical field [0001] The invention belongs to the technical field of power system transient digital simulation, in particular to a real-time digital hybrid simulation interface method based on frequency division impedance compensation. Background technique [0002] As a large number of power electronic equipment (especially a large number of renewable energy generation equipment) is connected to the grid, the operating characteristics and control characteristics of the grid become very complicated, and the strong nonlinear characteristics of the power system become increasingly prominent. The new trend of power system development has put forward higher requirements for power system simulation technology, that is, in the simulation process, it can not only simulate the electromechanical transient process of large-scale interconnected networks, but also simulate the electromagnetic transient process of local fast-changing power electronic devices. . Electromagnetic transien...

AI Technical Summary

Problems solved by technology

Through the interface method based on frequency division impedance compensation, the present invention can effectively compensate the high-frequency characteristics of the electromechanical transient network and the interface interaction delay error, and solve the problem that the traditional interface algorithm cannot reflect the high-frequency characteristics of the electromechanical transient network and interact with the simulation system delay error problem

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