Method for designing interface with harmonic characteristic hybrid simulation function

A technology of interface design and hybrid simulation, applied to harmonic reduction devices, AC networks to reduce harmonics/ripples, complex mathematical operations, etc., can solve problems that affect the calculation accuracy of the electromagnetic side and affect the reliability of large power grid calculations, etc. , to achieve the effect of increasing accuracy and reliability, small design error, and small amount of calculation

Active Publication Date: 2012-10-03
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

In the electromechanical-electromagnetic hybrid simulation, because the scale of the electromechanical transient calculation sub-network is often large, including many harmonic source devices, a large number of harmonics will be generated, the electromagnetic transient calculation sub-network requires accurate calculation, and often through the physical interface When connecting actual physical equipment, the impact on harmonics needs to be fully considered. If the harmonic characteristics of the electromechanical large grid are ignored, this will affect the calculation accuracy of the electromagnetic side, and even affect the calculation reliability of the entire large grid.

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  • Method for designing interface with harmonic characteristic hybrid simulation function
  • Method for designing interface with harmonic characteristic hybrid simulation function
  • Method for designing interface with harmonic characteristic hybrid simulation function

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Embodiment Construction

[0038] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] The interface design method of hybrid simulation harmonic characteristics provided by the present invention, Figure 7 It is a flow chart of the interface design method of the hybrid simulation harmonic characteristic provided by the present invention, such as Figure 7 As shown, the method includes the following steps:

[0040] (1) Establish Thevenin equivalent interface matrix and interface equivalent voltage source;

[0041] Through the frequency scanning calculation of the harmonic power flow module on the electromechanical side, the voltage and current of each harmonic at the interface are obtained; the fundamental frequency division network equivalent circuit algorithm is used to obtain the Thevenin at the interface on the electromechanical side under each harmonic value interface matrix and an equivalen...

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Abstract

The invention relates to a method for designing en interface for an electric system, in particular to a method for designing an interface with harmonic characteristic hybrid simulation function. The method comprises the following steps: 1, building a Thevenin equivalent interface matrix and an interface equivalent voltage source; 2, building a frequency-dependent equivalent model; and 3, building an equivalent interface circuit of a multi-frequency harmonic power supply. The method not only combines the interface model frequency harmonic characteristics of an electromechanical transient subnetwork, but also utilizes the harmonic source characteristics of the electromechanical transient subnetwork, can transmit the harmonic characteristics of the electromechanical transient subnetwork to an electromagnetic transient subnetwork for calculation, and increases the precision and reliability of the simulating calculation.

Description

technical field [0001] The invention relates to an interface design method of a power system, in particular to an interface design method for hybrid simulation harmonic characteristics. Background technique [0002] Time-domain simulation has become an important tool for power system analysis, design and research. With the wide application of power electronics technology, flexible AC transmission, high-voltage direct current Generally, energy generation equipment needs to be connected to the power grid through power electronic converters. In the electromechanical-electromagnetic hybrid simulation of power systems, due to the difference in step size and algorithm between electromechanical transient calculation and electromagnetic transient calculation, the traditional Norton - When the Thevenin equivalent interface circuit is used, the harmonic characteristics of the electromechanical subnet cannot be fed back to the calculation of the electromagnetic subnet. With the popular...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01G06F17/13
CPCY02E40/40
Inventor 郑伟杰陈绪江田芳张星
Owner CHINA ELECTRIC POWER RES INST
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