User defined simulation method for electrical power system based on mixed variable step size stimulation

A user-defined, power system technology, applied in the field of simulation, can solve the problems that the fixed-step simulation main program hybrid variable-step-size UD simulation method has not yet been realized, the self-defined model calculation does not converge, and the simulation accuracy and efficiency are affected. Achieve the effect of improving calculation convergence, reducing possibility, and improving calculation speed

Active Publication Date: 2017-01-04
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0003] Among the existing power system simulation software in China, the UD function technology is relatively backward. There is a UD function in the Power System Analysis Software Package (PSASP), but its simulation uses a fixed step size consistent with the main program, which is prone to spontaneous Define the problem that the model calculation does not converge or the calculation redundancy is too large, which affects the accuracy and efficienc

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  • User defined simulation method for electrical power system based on mixed variable step size stimulation
  • User defined simulation method for electrical power system based on mixed variable step size stimulation

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[0023] The present invention will be further described in detail below in conjunction with the drawings.

[0024] The present invention provides a power system user-defined simulation method based on hybrid variable step size simulation. The method includes the following steps:

[0025] Step 1: Preprocessing of user-defined model;

[0026] Step 2: Initialization of the user-defined model;

[0027] Step 3: Simulation calculation of user-defined model.

[0028] In the step 1, the control parameters of the simulation calculation are set, and the preprocessing of the user-defined model is completed;

[0029] The control parameters of the simulation calculation include the subdivision step size multiple, the start time of the hybrid variable step size simulation and the end time of the hybrid variable step size simulation.

[0030] In the step 2, it is judged whether the start time of the hybrid variable step size simulation is zero time, if it is, the initial calculation is performed accordin...

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Abstract

The invention provides a user defined simulation method for an electrical power system based on mixed variable step size stimulation. A user defined function of an analyzing packaged program of the electrical power system is optimized through the pretreatment, initialization and stimulation calculation of a user defined model; the redundancy of the user defined model is reduced when the dynamic process of the system is stable; the calculation speed is increased while the acceptable accuracy of the engineering calculation is not lost; the fine accurate calculation is performed in the to-be-concerned period; the mixed step size stimulation function in the electromechanical-electromagnetic transient and electromechanical-medium and long term processes of the analyzing packaged program of the electrical power system is achieved; the variable step size stimulation is realized to some extent; the calculation convergence, accuracy and calculation efficiency of the analyzing packaged program of the electrical power system are increased; the use scope of the analyzing packaged program of the electrical power system is widened.

Description

technical field [0001] The invention relates to a simulation method, in particular to a user-defined simulation method of a power system based on hybrid variable step size simulation. Background technique [0002] With the rapid development of power system and power electronics technology, new system components are continuously invested and system control technology is improving day by day. It is required that several new components and various control functions can be simulated in the calculation of power system. General simulation analysis software is equipped with user-defined (UD) modeling and / or third-party software interface functions to realize open simulation of the software and make up for the lack of professional simulation software. [0003] Among the existing power system simulation software in China, the UD function technology is relatively backward. There is a UD function in the Power System Analysis Software Package (PSASP), but its simulation uses a fixed ste...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 夏天安宁徐得超李蒙李岩松张景明
Owner CHINA ELECTRIC POWER RES INST
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