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A Simulation Calculation Method for the Development Process of Combined Gap Impulse Discharge

A technology of development process and combined gaps, applied in the direction of design optimization/simulation, etc., can solve problems such as unclear mechanism, lack of theoretical guidance, complex discharge behavior, etc., and achieve the effect of solving practical engineering problems

Active Publication Date: 2022-04-15
WUHAN UNIV
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  • Description
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  • Application Information

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Problems solved by technology

Compared with ordinary gaps composed of fixed potential conductors, this type of combined gap often has more complex discharge behavior due to the existence of potential suspension conductors, and it is difficult to simulate and analyze its discharge process and summarize its discharge characteristics
[0003] At present, when solving such problems in actual engineering, due to the unclear mechanism and lack of theoretical guidance, it mainly relies on true type tests to determine the characteristics of specific combined gap impulse discharges. These experimental studies are somewhat blind and tentative, and heavy workload

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  • A Simulation Calculation Method for the Development Process of Combined Gap Impulse Discharge
  • A Simulation Calculation Method for the Development Process of Combined Gap Impulse Discharge
  • A Simulation Calculation Method for the Development Process of Combined Gap Impulse Discharge

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Embodiment Construction

[0046] The specific implementation scheme of the present invention will be further described below in conjunction with the accompanying drawings.

[0047] A simulation calculation method for the development process of combined gap impulse discharge, including the following steps:

[0048]Step 1: In the finite element software, the electric field calculation physical model considering the movement of charged particles is established in the finite element software. The model mainly includes the following physical components: high-voltage rod electrode 1, suspended metal plate 2, low-voltage rod electrode 3 and Outer border4. The high-voltage rod electrode 1 and the low-voltage rod electrode 3 have a cylindrical body and a hemispherical head. Impulse voltage is applied to the high-voltage rod electrode 1, and the low-voltage rod electrode 3 is set to be grounded. The suspended metal plate 2 is placed between the high-voltage rod electrode 1 and the low-voltage rod electrode 3, a...

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Abstract

The present invention relates to a simulation calculation method for the development process of combined gap impulse discharge. The method comprises: step 1: establishing an electric field calculation physical model considering the movement of charged particles in the development process of combined gap discharge in finite element software; step 2: Combining the calculation results of the electric field and the simulation results of the charged particle motion in the pre-discharge stage, determine the potential of the potential suspension conductor in each stage of the discharge development; Simulation of gap breakdown development. The invention can realize the analysis of the actual physical process of the combined gap discharge process, and helps to clarify its discharge mechanism.

Description

technical field [0001] The invention relates to a simulation calculation method for the development process of air gap discharge, in particular to a simulation calculation method for the development process of impulse discharge in combined gaps. Background technique [0002] Air is a widely used insulating medium. In order to select a suitable insulation distance, it is necessary to accurately understand the discharge voltage of the air gap. However, due to the incomplete gas discharge theory, it is difficult to carry out accurate simulation calculations on the discharge process of the gap. At present, the research on the typical gap is sufficient, and people have a clear understanding of its discharge characteristics. Although many of the gaps actually used are not typical electrodes, they can generally be estimated by referring to similar typical gaps. However, in the power system, there is also a special combination gap composed of multiple conductors, which is characte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23
Inventor 鲁海亮姒天军蓝磊文习山
Owner WUHAN UNIV
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