Method and system for establishing broadband model of damping bus for gas insulated switchgear equipment

A gas-insulated switch and damping technology, which is applied in the field of power transmission and transformation, can solve the problems that standard models and modeling cannot be used

Inactive Publication Date: 2017-07-07
CHINA ELECTRIC POWER RES INST +6
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Problems solved by technology

In the method of adding damping bus to suppress VFTO, there is a problem that the standard model cannot be used for modeling due to the change of wave impedance during the transient calculation process

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  • Method and system for establishing broadband model of damping bus for gas insulated switchgear equipment
  • Method and system for establishing broadband model of damping bus for gas insulated switchgear equipment
  • Method and system for establishing broadband model of damping bus for gas insulated switchgear equipment

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[0062] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0063] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

A method and a system for establishing a broadband model of a damping bus for gas insulated switchgear (GIS) equipment are provided. The method comprises: measuring a frequency variation parameter of the damping bus for the equipment; plotting an admittance characteristic curve based on the frequency variation parameter of the damping bus for the equipment; based on the parameter of each local peak point of the admittance characteristic curve, obtaining a parameter value of each component of the RLCG (resistor, inductor, capacitance, and conductance) branch, and carrying out superposition on the RLCG branch by using the image method so as to obtain an equivalent circuit model; using the multi-iteration calculation of the crossover and mutation of the genetic algorithm to determine the optimal value of each component of the RLCG branch in the equivalent circuit model, and obtaining an optimal circuit model; and carrying out frequency sweep and simulation on the optimal circuit model, and comparing the frequency sweep result with the actual measurement result to verify the accuracy of the optimal circuit model, and to determine the broadband model of the damping bus for the GIS equipment.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation, and more specifically, relates to a method and a system for establishing a broadband model of a damping busbar for a gas insulated switchgear. Background technique [0002] In gas insulated switchgear (GIS) equipment, the operation of the isolating switch generates a very fast transient overvoltage (VFTO), which has an important impact on the safe operation of GIS equipment, external connection equipment and secondary equipment , and with the increase of the voltage level, this effect becomes more and more significant, especially in the UHV system. [0003] At present, the methods of suppressing VFTO mainly include installing parallel resistors in the isolation switch, adopting a slow-moving isolation switch, adding a magnetic ring, and adding a damping busbar. In the method of adding a damping busbar to suppress VFTO, there is a problem that the standard model cann...

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Application Information

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IPC IPC(8): G06F17/50G06N3/12
CPCG06N3/126G06F30/20
Inventor 李璿张爱祥王平宋士瞻王晓琪张健王磊吴士普冯宇戴敏汪本进王欢余春雨毛安澜邱进陈江波王玲陈晓明杜砚徐思恩费烨何妍朱丝丝
Owner CHINA ELECTRIC POWER RES INST
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