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Lightning location method based on lightning multi-variant data auto-correlation time difference algorithm

A technology of time difference positioning and multi-data, applied in the measurement of electrical variables, electromagnetic field characteristics, measurement devices, etc., can solve the problems of inaccurate positioning, short detection distance, difficult to operate, etc., and achieve high positioning accuracy, small calculation amount, and flexibility. high sex effect

Inactive Publication Date: 2017-08-04
YUNNAN POWER GRID CO LTD KUNMING POWER SUPPLY BUREAU
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Problems solved by technology

The characteristic of this method is that it can locate cloud flashes and ground flashes at the same time, and can understand the general discharge process of lightning, but the detection distance is short, it is difficult to commercialize, and it can only be used for scientific research
The thunder location method uses the propagation speed of sound in the air and the propagation speed of light in the air. After the lightning occurs, the observer will first see the lightning process and then hear the thunder, and use this time difference to estimate the distance between the lightning occurrence location and the observer. The distance, this method can only be used for estimation, not for precise positioning

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  • Lightning location method based on lightning multi-variant data auto-correlation time difference algorithm
  • Lightning location method based on lightning multi-variant data auto-correlation time difference algorithm
  • Lightning location method based on lightning multi-variant data auto-correlation time difference algorithm

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Embodiment Construction

[0032] A lightning discharge process can generally locate hundreds to thousands of radiation sources, obtain the three-dimensional fine structure of the lightning discharge, the energy of the lightning VLF radiation source, and invert the important physical characteristics and parameters of the thunderstorm cloud charge structure. The three-dimensional positioning process of the lightning VLF radiation source actually uses the arrival time ti of the lightning VLF radiation source measured by the detection antennas distributed in the same area, combined with the space position coordinates (xi, yi, zi), the process of solving an overdetermined equation system containing four unknowns (t, x, y, z), where t is the start time of the lightning VLF radiation source, and (x, y, z) is the space-time of the VLF radiation source Position coordinates. The calculation of the coordinates of the lightning radiation source is an important part of the lightning location.

[0033] see figure ...

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Abstract

The application discloses a lightning location method based on a lightning multi-variant data auto-correlation time difference algorithm. The method comprises the following steps: performing noise suppression preprocessing on electromagnetic wave signals monitored by each monitoring station; cutting synchronous data of each monitoring station; solving auto-correlation time difference t among the synchronous data; performing lightning position calculation according to a time difference location equation, wherein the time difference location equation is as shown in the specification, (x, y, z, t) represents the generation position and generation time of a radiation source; (xi, yi, zi) represents the position of the ith observation station; ti represents time of signals measured at the ith observation station; and c is an electromagnetic wave propagation speed in the atmosphere. The lightning location method based on the lightning multi-variant data auto-correlation time difference algorithm provided by the application is small in calculated amount, high in speed, high in flexibility and high in locating precision and has extremely high practical value in the field of lightning study.

Description

technical field [0001] The present application relates to the technical field of lightning location, in particular to a lightning location method based on the multivariate data autocorrelation time difference algorithm of lightning. Background technique [0002] The occurrence of lightning may cause many hazards. For example, it may cause the tripping of the transmission line of the power grid. Troubleshoot the fault point. Areas with frequent lightning and lightning are usually located in mountainous areas, and line inspection and maintenance personnel have to travel over mountains and mountains, which is time-consuming and labor-intensive. The failure of some key lines may cause serious consequences such as delaying power transmission and reducing the safety and stability of the power grid. In order to improve the troubleshooting efficiency of lightning-induced faults and reduce the consequences of lightning, people continue to study lightning location. [0003] Existin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08
CPCG01R29/0842
Inventor 王磊周懋坤梁仕斌陈柏希田庆生肖冬杜景琦陈柯豪张其林王金虎李详超王烁
Owner YUNNAN POWER GRID CO LTD KUNMING POWER SUPPLY BUREAU
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