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Numerical integration method for electric power system full dynamic simulation

A technology of dynamic simulation and numerical integration, applied in electrical digital data processing, information technology support systems, electrical components, etc., can solve problems such as slow simulation speed, shorten simulation time, overcome low calculation efficiency, and ensure numerical stability and the effect of simulation accuracy

Active Publication Date: 2010-12-01
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But its disadvantages and problems are: in the medium and long-term dynamic process, the step size is basically the same as that of the electromechanical transient process, and the simulation speed is slow

Method used

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  • Numerical integration method for electric power system full dynamic simulation
  • Numerical integration method for electric power system full dynamic simulation
  • Numerical integration method for electric power system full dynamic simulation

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Abstract

The invention discloses a numerical integration method for electric power system full dynamic simulation, combining a fixed-step trapezoidal integration method and a variable-step Gear integration method organically in the full dynamic simulation. In the method, the fixed-step trapezoidal integration method, a differential equation of a dynamic element and an algebraic equation of power network are adopted to carry out iterative solution in a mechanical and electrical transient state process of the electric power system full simulation; in the method, the variable-step Gear integration method, the differential equation of the dynamic element and the algebraic equation of the power network are adopted to carry out simultaneous solution in a medium and long-term dynamic process. The fixed-step method and the variable-step method are switched automatically according to a certain strategy in the simulation. The method integrates the advantages of the two original numerical integration methods, thereby overcoming the defect of low calculational efficiency resulting from too small step in the simulation of mechanical and electrical transient state process of the electric power system ofthe existing full dynamic simulation program while ensuring numerical calculation stability and calculation accuracy.

Description

A numerical integration method for dynamic simulation of the whole process of power system technical field The invention relates to a simulation and calculation of a power system, in particular to a numerical integration method for dynamic simulation of the whole process of the power system. Background technique The dynamic simulation of the whole process of the power system refers to the organic unity of the electromechanical transient state, medium-term and long-term process of the power system for digital simulation. The dynamic simulation of the whole process of power system can describe the whole continuous dynamic process after the power system is disturbed. The dynamic process from the electromechanical transient process to the medium and long-term process of the power system is continuous and not completely separated: the transient process has an impact on the medium- and long-term process, and the medium- and long-term process also has an effect on the subsequent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06F17/10H02J3/00
CPCY04S40/22Y02E60/76Y02E60/00
Inventor 汤涌宋新立刘文焯候俊贤刘涛
Owner CHINA ELECTRIC POWER RES INST
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