Data exchange method for electromechanical and electromagnetic transient hybrid simulation

Abstract

The invention discloses a data exchange method for electromechanical and electromagnetic transient hybrid simulation and relates to the technical field of transient stability research and digital simulation of power systems. The method comprises the following steps of: simulating an electromagnetic transient simulation power grid to obtain the electromagnetic transient simulation data, simulating an electromechanical simulation power grid to obtain the electromechanical simulation data, processing the electromechanical simulation data to obtain a three-phase instantaneous value Thevenin equivalent circuit model of the electromagnetic transient simulation power grid, correcting a power supply frequency and transmitting the parameters of the three-phase instantaneous value Thevenin equivalent circuit model to the electromagnetic transient simulation power grid through an interface bus; and processing the electromagnetic transient simulation data to obtain the active power and the reactive power injected into the electromechanical simulation power grid through the interface bus and form an electromechanical simulation interface bus model, so that the active power and the reactive power can be transmitted to the electromechanical simulation power grid. According to the data exchange method for electromechanical and electromagnetic transient hybrid simulation disclosed by the invention, the real-time simulation of the power grid in a relatively large scale is realized; and the hybrid simulation is not limited by the scale of the power grid.

Description

technical field [0001] The invention relates to the technical field of power system transient stability research and digital simulation, in particular to a data exchange method for electromechanical and electromagnetic transient mixed simulation. Background technique [0002] Power system digital simulation is widely used in transient stability analysis, protection device setting and control, and dispatcher real-time training simulation. The transient process of power system is very complicated. According to different time scales, it can be divided into electromagnetic transient process and electromechanical transient process. The research on these two processes usually adopts EMTP (Electromagnetic Transient Program, electromagnetic transient simulation) and TSP ( Transient Simulation Program, electromechanical transient simulation) two methods. [0003] EMTP calculates the instantaneous value response of the voltage and current in the grid dynamics, and the simulation step...

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Problems solved by technology

[0005] 1. EMTP simulation needs a mathematical model that describes the dynamic behavior of components in the network in detail, so it is difficult to perform real-time simulation on a large-scale power grid;

[0006] 2. With the continuous development of power electronics technology and high-voltage direct current transmission technology, the safety analysis of large power grids often needs to consider the electromagnetic dynamic process of these new components, but TSP simulation cannot perform such simulations

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