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Analytical model for saturable reactor for converter valve

An analytical model, reactor technology, used in instruments, electrical digital data processing, special data processing applications, etc.

Active Publication Date: 2010-12-29
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The literature (Barnes, M.J. The prediction and control of transients in thyristor valves, PhD thesis, University of Aston in Birmingham, May 1985) first analyzed the model of the saturable reactor, considering the nonlinear inductance characteristics, but for its iron loss characteristics The equivalent resistance is regarded as a constant value, which is far from the actual situation of the saturable reactor

Method used

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  • Analytical model for saturable reactor for converter valve
  • Analytical model for saturable reactor for converter valve
  • Analytical model for saturable reactor for converter valve

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Embodiment Construction

[0033] figure 1 A schematic structural diagram of an electrical model of the saturable reactor of the present invention is shown.

[0034] figure 2 An analytical model of the saturable reactor of the present invention is shown.

[0035] figure 1 in, R dc is the coil resistance of the saturable reactor, C o is the equivalent capacitance between the saturable reactor terminals, L o is the air-core inductance of the saturable reactor. Nonlinear core inductance parameter L m and nonlinear iron loss resistor R m parameters such as figure 2 shown.

[0036] The coil resistance of the saturable reactor can be calculated by the resistance formula Calculated, where ρ is the resistivity of the coil, l is the length of the coil wire, and s is the effective cross-sectional area of ​​the coil wire.

[0037] The equivalent capacitance between the saturable reactor terminals is the equivalent value seen from the coil port of the saturable reactor after combining the stray capaci...

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Abstract

The invention provides an analytical model for a saturable reactor for a converter valve. The saturable reactor for the converter valve consists of a coil and an iron core; and the working state of the iron core has a linear stage and a nonlinear stage under rated operation. In order to better perform electrical design and electrical analysis on the saturable reactor, the invention provides an analytical model for the saturable reactor for the converter valve. The analytical model comprises a coil resistance, a coil inductance, a core inductance, a core resistance, a terminal capacitance and other parameters. Corresponding electrical parameters of saturable reactors with different shapes and dimensions can be calculated. The analytical model has the advantages of clear physical conception, and capacities of easily acquiring each parameter needed in the model through a real object and providing a foundation for deep analysis of the saturable reactor.

Description

technical field [0001] The invention relates to the field of power system devices, in particular to an analytical model of a saturated reactor for a converter valve. Background technique [0002] The saturable reactor for DC power transmission converter valve is one of the important components to protect the thyristor in the converter valve. It consists of a core and a winding, using the saturation characteristics of the core material to obtain the saturation characteristics of electrical parameters. Since the nonlinear characteristics of the saturable reactor are related to the material of the iron core, and the operating point of the iron core is related to the opening current of the thyristor in the converter valve where it is located, the premise of its electrical design and electrical characteristic analysis must be based on the reasonable electrical characteristics of the saturable reactor. Model. [0003] The structures of existing saturable reactors are mainly divi...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张文亮查鲲鹏于海玉刘杰
Owner CHINA ELECTRIC POWER RES INST
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