Main insulating anti-corona structure optimization calculating method used for high-voltage motor

Abstract

The invention discloses a main insulating anti-corona structure optimization calculating method used for a high-voltage motor. The method includes: utilizing finite element multi-physical-field coupling simulation software to perform physical modeling, material attribute defining, boundary condition and excitation source adding and solver frequency setting on a main insulating anti-corona structure for solving, and unloading the calculating process into a script file; modifying the script file to be a simulation calculating function file, taking a to-be-optimized parameter introducing variable vector p as an input variable of the simulation calculating function file, and building a target function used for evaluating effect of the anti-corona structure; setting changing range of parameters of the anti-corona structure to be optimized and calculated, generating multiple groups of variable vectors, circularly calling a simulation calculating function to calculate the variable vectors respectively, and outputting a variable vector corresponding to optimal solution of the target function after circular calculating is finished. By the method, troublesome processes like repeated modeling, simulation calculating and analyzing in the optimization process of the anti-corona structure can be avoided, manual cost is lowered, and designing efficiency is improved.

Description

technical field [0001] The invention relates to the field of high-voltage insulation design, in particular to an optimization calculation method for a main insulation anti-corona structure of a high-voltage motor. Background technique [0002] The notch at the end of a large high-voltage motor is likely to cause electric field concentration and cause local corona or even discharge. The generation of corona not only makes the motor unstable during operation and reduces efficiency, but also destroys the structure of the motor insulation layer and affects the stator. The service life of the coil has also become a limiting condition for large-scale high-voltage motors to increase their own capacity. There are three main methods for traditional motor insulation anti-corona structure design: experience and engineering approximation method, link model method and finite element method, among which finite element method has been widely used in motor design in the process of continuou...

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Problems solved by technology

[0002] The notch at the end of a large high-voltage motor is likely to cause electric field concentration and cause local corona or even discharge. The generation of corona not only makes the motor unstable during operation and reduces efficiency, but also destroys the structure of the motor insulation layer and affects the stator. The service life of the coil has also become a limiting condition for large-scale high-voltage motors to increase their own capacity

There are three main methods for traditional motor insulation anti-corona structure design: experience and engineering approximation method, link model method and finite element method, among which finite element method has been widely used in motor design in the process of continuous development and improvement in recent years , but due to the high correlation between the structural parameters of the main insulation anti-corona layer of the high-voltage motor, it is meaningless to simply consider the influence of one parameter change on the electric field distribution at the end of the motor, and the repeated calculation of the parameters in the manual modification calculation process will consume too much More artificial and material resources, more inconvenient for analysis

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