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Smoothing reactor broadband electromagnetic transient analysis equivalent circuit based on transmission line structures

A technology of smoothing reactor and equivalent circuit, applied in the fields of instruments, electrical digital data processing, special data processing applications, etc., can solve the problem that the reactor model cannot meet the disturbance conditions, etc., and solve the calculation problem of electromagnetic disturbance caused by DC field conduction. , The calculation process is simple and efficient, and the effect is convenient to achieve

Active Publication Date: 2015-02-04
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology

[0007] The purpose of the invention is to overcome the deficiencies of the prior art, to propose a smoothing reactor broadband electromagnetic transient analysis equivalent circuit based on the transmission line structure, the present invention is based on the unit length equivalent circuit of the smoothing reactor, Considering the changes of parasitic capacitance, stray inductance and winding resistance of smoothing reactor distribution parameters under the action of high-frequency skin effect and proximity effect, it solves the problem that the existing reactor model cannot meet the electromagnetic transient analysis under disturbance conditions. It has outstanding advantages in the electromagnetic transient analysis of the smoothing reactor of the DC transmission system and the analysis of the electromagnetic disturbance level of the DC field conduction

Method used

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  • Smoothing reactor broadband electromagnetic transient analysis equivalent circuit based on transmission line structures
  • Smoothing reactor broadband electromagnetic transient analysis equivalent circuit based on transmission line structures
  • Smoothing reactor broadband electromagnetic transient analysis equivalent circuit based on transmission line structures

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Embodiment Construction

[0028] The equivalent circuit of the smoothing reactor broadband electromagnetic transient analysis based on the transmission line structure proposed by the present invention is described in detail as follows:

[0029] The present invention proposes a smoothing reactor broadband electromagnetic transient analysis equivalent circuit based on a transmission line structure, which is characterized in that n identical smoothing reactor unit length broadband equivalent circuits are sequentially connected in series to form multiple distributed type transmission line structure, such as Figure 4 As shown, the boxes corresponding to 1, 2, 3, ..., n in the figure respectively represent a distributed smoothing reactor unit length broadband equivalent circuit, and the connecting lines at both ends of the box indicate the unit length broadband equivalent circuit between series relationship. In this way, the propagation of the transient wave process inside the smoothing reactor can be simu...

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Abstract

The invention relates to a smoothing reactor broadband electromagnetic transient analysis model based on transmission line structures, in particular to a smoothing reactor broadband electromagnetic transient analysis equivalent circuit based on transmission line structures which belongs to the field of electromagnetic transient broadband models for power systems. n like smoothing reactor unit length broadband equivalent circuits are sequentially connected in series to form the equivalent circuit provided by the invention, so that a plurality of distributed transmission line structures are formed, and the distributed transmission line structures are utilized to simulate the transmission of the transient wave process in a smoothing reactor. The smoothing reactor broadband electromagnetic transient analysis equivalent circuit takes the changes of parasitic capacitance, stray inductance and winding resistance of distribution parameters of the smoothing reactor under the high-frequency skin effect and the proximity effect into consideration, and can accurately simulate the electromagnetic transient of the smoothing reactor under power frequency characteristics and disturbance characteristics.

Description

technical field [0001] The invention belongs to the field of electromagnetic transient broadband models of electric power systems, and in particular relates to a broadband electromagnetic transient analysis equivalent circuit based on a transmission line structure, which considers the parasitic capacitance, The change of stray inductance and winding resistance is suitable for the electromagnetic transient analysis of the smoothing reactor of the DC transmission system and the analysis of the electromagnetic disturbance level of the DC field conduction. Background technique [0002] The smoothing reactor is one of the main equipments in the HVDC converter station, and it is the key equipment connecting the converter valve and the DC side. The accuracy of the smoothing reactor broadband equivalent circuit model directly affects the validity of the calculation of the electromagnetic disturbance level of the DC field conduction, and then affects the accuracy of the prediction of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 黄莹余占清朱童张晓邱伟赵晓斌曾嵘何金良王云超张波
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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