Method for obtaining lightning current based on artificial neural network

Abstract

The invention relates to a method for obtaining lightning current based on an artificial neural network, which belongs to the lightning monitoring technology in the field of electric engineering. The method includes: using electric field and magnetic field sensors at different distances from the observation point in a lightning optical and electromagnetic synchronous observation system to obtain data of the electric field and magnetic field The training sample set and the test sample set are composed, and then preprocessing measures such as wavelet noise reduction and smoothing are performed on the data in the training sample set, and the artificial neural network is trained through the training sample set to obtain the network parameters of the artificial neural network: connection weights, Finally, use the test sample set to test the trained artificial neural network. The present invention is based on the Elman artificial neural network, and uses the electromagnetic field generated by the measured lightning discharge to calculate the lightning current data, thereby obtaining characteristic parameters such as the amplitude of the lightning current, providing basic parameters for lightning protection, and making lightning protection targeted.

Description

technical field [0001] The invention belongs to the lightning monitoring technology in the electrical field, and in particular relates to a method for obtaining lightning current based on an Elman artificial neural network. The lightning current data is obtained by monitoring electric field and magnetic field data when lightning occurs. Background technique [0002] Lightning is one of the top ten natural disasters. The large current, high voltage and strong electromagnetic field it generates in an instant will not only cause human and livestock casualties, but also have a huge destructive effect on the natural resources on which human beings depend and the material wealth created by human beings. Equipment and facilities in national economic sectors such as aerospace, railway transportation, and even financial securities have caused damage. Therefore, issues such as lightning phenomena, lightning physics, lightning warning and protection are still hot research issues in th...

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Problems solved by technology

However, this method must ensure that the model for accurately calculating the electromagnetic field generated by lightning using lightning current is very accurate, and the electromagnetic field will have refraction and reflection in the process of propagation, so the electromagnetic field-lightning current model will be very different in different regions. The electromagnetic field-lightning current model is also very difficult

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