Vibration displacement calculation method and device for electrical equipment iron core and terminal equipment

Abstract

The invention is suitable for the field of electrical technology, and provides a vibration displacement calculation method and device for an electrical equipment iron core and terminal equipment. The method comprises the steps: calculating a vector magnetic potential according to a mass matrix and a magnetic field stiffness matrix of a target iron core and an electric field parameter of an electric field where the target iron core is located, and calculating the magnetic field distribution corresponding to the target iron core; calculating a Maxwell force corresponding to the target iron core according to the magnetic field distribution; inputting the mass matrix, the magnetic field stiffness matrix and the Maxwell force into a preset mechanical vibration equation, and solving the vibration displacement of the target iron core based on a harmonic balance method. According to the method provided by the invention, the influence of a mass matrix, a magnetic field stiffness matrix and Maxwell force on vibration is fully considered in a mechanical vibration equation, and the accuracy of vibration displacement calculation can be improved; a harmonic balance method is applied in the solving process, the vibration displacement can be calculated in the frequency domain, the calculation speed can be increased, and a basis is provided for harmonic analysis of the vibration displacement.

Description

technical field [0001] The invention belongs to the field of electrical technology, and in particular relates to a calculation method, device and terminal equipment for vibration displacement of iron cores of electrical equipment. Background technique [0002] Iron core structures are widely used in electrical equipment, such as iron cores in transformers and generators. The vibration generated by the core structure during operation will not only accelerate the aging of electrical equipment, but also affect the normal operation of the power grid. On the other hand, the vibration noise of the iron core structure will also affect people's health and daily life. In order to ensure the normal operation of electrical equipment, it is necessary to analyze the magnetic field and vibration of the iron core. [0003] At present, the vibration research on the iron core of electrical equipment is usually based on the actual product or model for actual detection and time-domain soluti...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method, device and terminal equipment for calculating the vibration displacement of the iron core of electrical equipment, so as to solve the problem of low accuracy in the calculation of the vibration displacement of the iron core in the prior art

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