Power grid primary system and secondary system combined real-time simulation modeling method and device

Abstract

The invention discloses a power grid primary system and secondary system combined real-time simulation modeling method and device, and the method comprises the steps: carrying out the processing of the key characteristic quantity of a power grid, obtaining the electromechanical transient data, converting the electromechanical transient data into real-time simulation data, and building an initial primary system model; constructing an initial power grid simulation model and correcting the initial power grid simulation model to obtain a corrected power grid simulation model, performing network division design, and obtaining a power grid area simulated by a calculation unit; constructing a broadband equivalent model according to the initial primary system model and the power grid area, and constructing an optimized primary system model and an initial secondary system model by using the broadband equivalent model; constructing a reinforced secondary system model containing three defensive line measures; and carrying out joint compiling on the optimized primary system model, the initial secondary system model and the enhanced secondary system model, constructing a system joint real-timesimulation model, and carrying out performance debugging on the system joint real-time simulation model to obtain a target real-time simulation model. The method can effectively simulate the power grid in real time and accurately describe the physical characteristics of the power grid.

Description

technical field [0001] The invention relates to the technical field of power system simulation, in particular to a real-time simulation modeling method and device for a power grid primary system combined with a secondary system. Background technique [0002] In recent years, China's UHV AC and DC power grid has developed rapidly, a new level of voltage level has gradually formed, new energy sources such as wind power and photovoltaics have been connected to the grid on a large scale, the power system has been restructured at an accelerated pace, and the ability to optimize the allocation of power resources on a large scale has been greatly improved. In order to accurately describe the current and future physical characteristics of the power grid, simulation models are generally established. With the intensification of the interaction between AC and DC, multi-DC, and source-grid loads, the scale of DC transmission continues to expand and become increasingly complex, and the sa...

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Problems solved by technology

[0003]The existing power grid simulation method only simply constructs the primary system and the secondary system, and cannot conduct joint real-time simulation of the primary system and the secondary system to form a complete real-time simulation model that accurately describes the physical properties of the grid

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