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Arc model construction method and system

An arc and model technology, applied in the fields of electrical digital data processing, instrumentation, calculation, etc., can solve the problems of small application range of arc models and reduce the efficiency of arc test research, and achieve a wide range of applications, accurate simulation, and improve the efficiency of experimental research. Effect

Pending Publication Date: 2019-03-19
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0005] In order to solve the problem that the scope of application of the arc model provided in the prior art is relatively small, resulting in a reduction in the efficiency of arc test research, this application discloses a method and system for constructing an arc model through the following embodiments

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Embodiment Construction

[0059] In order to solve the problem that the range of application of the arc model provided in the prior art is relatively small, resulting in a reduction in the efficiency of arc test research, the present application discloses a method and system for constructing an arc model through the following embodiments.

[0060] The first embodiment of the present application discloses a method for constructing an arc model, see figure 1 As shown in the schematic diagram of the workflow, the method includes:

[0061] Step S11, acquiring arc data, the arc data includes arc voltage, arc current and arc stable arcing voltage.

[0062] Specifically, in actual operation, the arc data is obtained by conducting an electrode arcing experiment. The process of the electrode arcing experiment is as follows: first, the copper electrode and the carbon electrode are set in a contact state, and then the copper electrode is pulled by the motor to generate an arc . By measuring the arc generated du...

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Abstract

The invention discloses an arc model construction method and system. The method comprises the steps that electric arc conductance is calculated according to acquired electric arc data, then mayr electric arc resistance and cascode electric arc resistance are acquired, a proportionality coefficient is set, and the mayr electric arc resistance and the cascode electric arc resistance are connected inseries according to the proportionality coefficient, so that electric arc stable resistance is acquired. Then establishing a first function relational expression and a second function relational expression; and finally, constructing an arc model according to the first function relational expression, the second function relational expression, a principle equation based on a mayr arc model and a principle equation of a class arc model. Compared with the prior art, the constructed arc model is wide in application range, the arc model can be dynamically constructed for the high-resistance arc andthe low-resistance arc by reasonably setting the proportionality coefficient, accurate simulation of the arc voltage and the arc current is achieved, and the experimental research efficiency of the arc is effectively improved.

Description

technical field [0001] The present application relates to the technical field of power system fault detection and protection, in particular to a method and system for constructing an arc model. Background technique [0002] During the breaking period of the high-voltage circuit breaker, the gap between the contacts of the high-voltage circuit breaker is prone to arc due to breakdown. The arc is a gas discharge phenomenon, which poses a great threat to the safe operation of the power system. Therefore, the research on the arc Dynamic behavior is of great significance for improving the breaking performance of high-voltage circuit breakers and ensuring the safe operation of power systems. In the prior art, experiments are usually conducted to conduct simulation research on the dynamic behavior of the arc, so as to further achieve the purpose of improving the breaking performance of the high voltage circuit breaker. [0003] In the process of simulating the dynamic behavior of ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367Y02E60/00
Inventor 于广辉刘红文王科杨庆聂鼎杨金东
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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