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An optical telemetry method for ground flashback strike current

A current and optical technology, applied in the direction of measuring current/voltage, measuring device, measuring electrical variables, etc., to achieve the effect of simple installation and debugging process

Active Publication Date: 2022-08-09
ARMY ENG UNIV OF PLA
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Problems solved by technology

At present, there is no report on the optical telemetry method that can be used for the lightning return stroke current

Method used

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  • An optical telemetry method for ground flashback strike current
  • An optical telemetry method for ground flashback strike current
  • An optical telemetry method for ground flashback strike current

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with specific embodiments.

[0026] like figure 1 As shown, an optical telemetry method for ground flashback strike current includes the following steps:

[0027] Step (10) Train the NARX model: perform sequence interpolation or extraction on a large number of ground flashback currents and their radiated light obtained from long-term actual observations, adjust them to sequence signals with the same sampling rate, and use them as nonlinear autoregressive signals with external input. (NARX) the output and input data of the model for model training;

[0028] The input data of the described (10) training NARX model is the radiated light of the recoil current, the output data is the recoil current, and the input radiated light signal has been corrected by the light intensity distance factor;

[0029] like figure 2 As shown, the process of (10) training the NARX model is an open-loop training ...

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Abstract

The invention relates to an optical telemetry method for ground flashback strike current. A large number of ground flashback strike currents and their radiated light obtained from long-term actual observation are subjected to sequence interpolation or extraction, and after being adjusted to sequence signals with the same sampling rate, they are respectively used as external signals with the same sampling rate. The output and input data of the input nonlinear autoregressive model are used to train the NARX model; the high-speed optical observation system is used to obtain the radiation light signal of the new ground flashback current, and after interpolation or extraction, it is adjusted to the sample during training with the NARX model The data has a sequence signal of the same sampling rate; multiply the acquired new radiation optical signal by the light intensity distance correction factor to correct the optical signal to provide input data for the trained NARX model; input the corrected new radiation optical signal into the trained NARX model The output of the NARX model is the optically measured flyback current. The method does not need to enter the current channel in series, nor does it need to surround the current channel, the installation and debugging process is simple, and it is free from external electromagnetic interference.

Description

technical field [0001] The invention is applied to the technical field of lightning characteristic observation, in particular to an optical telemetry method for ground flashback strike current, which can realize non-electromagnetic interference measurement of the strike back current. Background technique [0002] The strikeback current is the basis for lightning cognition and protection. It is generally characterized by parameters such as peak value, maximum current change rate, waveform front, duration, half-peak width, and total transferred charge. To achieve an accurate description of the current, it must be based on a large number of observational data. For example, Wang Fei et al. pointed out in the article "Review of Ground Flashback Current Measurement" that the ground flashback current is an important characteristic parameter of lightning, and the accumulation of its measurement data is of great significance for the improvement of lightning protection technology. At...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
CPCG01R19/00
Inventor 张琪石立华陈海林段艳涛王建宝付尚琛
Owner ARMY ENG UNIV OF PLA
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