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A cassie-mayr arc model simulation method

An electric arc and model technology, applied in design optimization/simulation, electrical digital data processing, instruments, etc., can solve the problem of narrow application range of arc model, achieve wide application range, improve simulation efficiency, and simple model

Inactive Publication Date: 2019-02-22
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0007] The purpose of this application is to provide a cassie-mayr arc model simulation method to solve the problem of narrow application range of existing arc models

Method used

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  • A cassie-mayr arc model simulation method
  • A cassie-mayr arc model simulation method
  • A cassie-mayr arc model simulation method

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Embodiment Construction

[0031] refer to Figure 1 to Figure 3 , the embodiment of the present application provides a cassie-mayr arc model simulation method, including:

[0032] Step S1, establish the MHD arc simulation through the finite element simulation software, and determine the relationship between the power dissipation of the arc and the arc voltage and arc current under the fixed medium;

[0033] Further, the step of establishing the MHD arc simulation through finite element simulation software to determine the relationship between the power dissipation of the arc and the arc voltage and arc current under a fixed medium includes:

[0034] The MHD model of the arc is established through the finite element software, and the values ​​of the dissipated power of the arc, arc current and arc voltage are obtained through simulation;

[0035] By numerical fitting, the relationship between the power dissipation of the arc, the arc voltage and the arc current is obtained;

[0036] The relationship b...

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Abstract

The present application discloses a cassie-Mayr arc model simulation method, including: through the finite element simulation software to establish the MHD arc simulation, to determine the arc dissipation power and arc voltage, arc current in a fixed medium; Assuming that the cassier arc model and the mayr arc model are two non-linear arc resistances, the relationship between the arc resistance and the proportional coefficient is established; Build cassie with pscad software- Mayr arc model, and establish the relation function of arc resistance and arc voltage and proportion coefficient; The simulation parameters are selected, and the arc is simulated according to the relation function of the arc resistance and the arc voltage and the proportion coefficient. By combining the cassie arc model and the mayr arc model according to a certain proportion, the application can accurately simulate the characteristics of the arc in the vicinity of the large current region and the current zero region, establish an arc model with wide application range, simple model and high simulation precision, and improve the simulation efficiency and precision.

Description

technical field [0001] The present application relates to the technical field of model simulation, in particular to a cassie-mayr arc model simulation method. Background technique [0002] At present, in the arc simulation, the main models used are the cassie arc model, the mayr arc model, the improved model based on the two arc models and the arc resistance model. However, each model has certain assumptions and its own problems. The cassie arc model is mainly suitable for the high current arcing period before the current crosses zero, which belongs to the occasion of low arc resistance and high current, while the mayr model is suitable for the small current period when the current crosses zero, and is more suitable for small current, High arc resistance occasions. Among them, formula (1) and formula (2) are the principle equations of the Cassie arc model and the Mayr arc model respectively: [0003] [0004] [0005] In the formula, g c Represents the conductance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 于广辉邓云坤彭晶刘洪文王科马仪王达达张少泉陈晓云
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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