Method for modeling electrical analysis model of saturable reactor for converter valve

A modeling method and electrical analysis technology, applied in the fields of instruments, electrical digital data processing, special data processing applications, etc., can solve problems such as increasing the complexity of formula fitting

Inactive Publication Date: 2011-01-05
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the saturation characteristics of the reactor core, when the running core enters the saturation section, the relationship between the core inductance, the core loss equivalent resistance and the branch current is nonlinear, which greatly increases the formula Complexity of fitting

Method used

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  • Method for modeling electrical analysis model of saturable reactor for converter valve
  • Method for modeling electrical analysis model of saturable reactor for converter valve
  • Method for modeling electrical analysis model of saturable reactor for converter valve

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Embodiment Construction

[0026] The equivalent circuit of the saturable reactor announced by the present invention is as figure 1 As shown, the iron loss resistor is connected in series with the core inductor, and then connected in series with the air core inductor and on-state resistance, and the stray capacitance is connected in parallel at the output port.

[0027] The mathematical relationship between the iron core inductance of the saturable reactor, the equivalent resistance of the iron core loss and the inductance branch current is:

[0028] L m = L d I m I oL L d ( ...

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Abstract

The invention relates to the field of power electronics and power systems, in particular to a method for modeling an electrical analysis model of a saturable reactor for a converter valve. In the invention, on the basis of analyzing the electrical properties of a converter valve assembly and a saturable reactor, serial and parallel forms of all electrical assemblies of an equivalent circuit of the saturable reactor are provided; and on the basis of the topological relation of the equivalent circuit, nonlinear relations of two parameters of an iron core inductor and an iron core loss equivalent resistor with current flowing through an iron core inductor branch are expressed in the form of a mathematical formula. Proved by tests, the saturable reactor manufactured with the technological level at present meets the mathematical formula, thereby the scientificity of the formula is further verified.

Description

technical field [0001] The invention relates to the fields of power electronics and power systems, in particular to a modeling method for an electrical analysis model of a saturated reactor for a converter valve. Background technique [0002] The equivalent circuit diagram of a saturable reactor for a DC converter valve plays an important role in the design of the saturable reactor, the theoretical analysis of the overall performance of the converter valve assembly, and the safe and stable operation of the converter valve assembly. important tool. At present, domestic saturable reactors are still in the imitation stage, and there is a lack of in-depth research on the electrical characteristics of saturable reactors. Existing information only gives a relatively rough equivalent circuit model, and qualitatively describes the components of the saturable reactor with circuit components. Due to the saturation characteristics of the reactor core, when the operating core enters t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 汤广福魏晓光刘杰于海玉
Owner CHINA ELECTRIC POWER RES INST
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