CN113295935B - Lightning stroke risk assessment method based on high-precision lightning positioning technology - Google Patents
Lightning stroke risk assessment method based on high-precision lightning positioning technology Download PDFInfo
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- CN113295935B CN113295935B CN202110606551.2A CN202110606551A CN113295935B CN 113295935 B CN113295935 B CN 113295935B CN 202110606551 A CN202110606551 A CN 202110606551A CN 113295935 B CN113295935 B CN 113295935B
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- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0842—Measurements related to lightning, e.g. measuring electric disturbances, warning systems
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Abstract
The invention discloses a lightning risk assessment method based on a high-precision lightning positioning technology, relates to the field of lightning risk assessment, and solves the problems that the provided cloud lightning information cannot be distinguished to influence the development process of early lightning electromagnetic radiation and limit the assessment of lightning risk activities. The method comprises the steps of carrying out gridding division on optical pulse signals acquired by a plurality of acquisition devices, calculating lightning segmentation positions, combining all the segmentation positions to obtain a motion model map of lightning, receiving cloud layer electric field quantity parameters collected by an electric field quantity collector, combining the electric field quantity parameters collected by the electric field quantity collectors, predicting the area range influenced by the electric field quantity driven by the lightning based on a Logitics function, calculating the influence area according to the predicted area range influenced by the lightning, and generating a three-dimensional lightning map by the strength of a field intensity signal acquired by a radio frequency receiver to obtain information influenced by a target area. The comprehensive analysis data of the invention is more comprehensive and has high accuracy.
Description
Technical Field
The invention relates to the field of lightning risk assessment, in particular to a lightning risk assessment method based on a high-precision lightning positioning technology.
Background
Lightning is one of ten disasters with the greatest harm to human beings. Lightning has long been a great threat to natural resources on which humans live and material civilization created by humans, and particularly, direct and indirect disasters caused by lightning are increasingly serious nowadays when microelectronic devices are widely applied, so that research on lightning is more and more emphasized, and a lightning location network LLS operated in China covers most of areas in China and can well monitor lightning. However, influences of the provided cloud flashing information on the early lightning electromagnetic radiation development process cannot be judged, and assessment of lightning stroke risk activities is limited.
Disclosure of Invention
The invention aims to solve the technical problems that: influences of the provided cloud flashing information on the early lightning electromagnetic radiation development process cannot be judged, and assessment of lightning stroke risk activities is limited. The invention provides a lightning stroke risk assessment method based on a high-precision lightning positioning technology, which solves the problems.
The invention is realized by the following technical scheme:
the lightning stroke risk assessment method based on the high-precision lightning positioning technology comprises the following steps:
A. acquiring one or more light pulse signals measured by a plurality of acquisition devices;
B. the method comprises the steps that light pulse signals acquired by a plurality of acquisition devices are subjected to gridding division according to a region set where all the acquired light pulse signal acquisition devices are located, lightning segment positions are calculated for three or more acquisition devices in each grid, the lightning segment positions are calculated for all the regions in the grids, and a motion model diagram of lightning is obtained by combining all the segment positions;
C. receiving cloud layer electric field quantity parameters collected by an electric field quantity collector, and carrying out energy segmentation judgment on a lightning track of a motion model diagram; the lightning track comprises a plurality of electric field quantity collector coverage areas, electric field quantity parameters collected by the electric field quantity collectors are combined, the Euclidean distance of data measured at the overlapping positions of the blocks where the electric field quantity collectors are located is analyzed, and the area range influenced by the electric field quantity driven by lightning is predicted based on a Logitics function;
D. calculating the strength of field intensity signals collected by a radio frequency receiver in an affected area according to the predicted area range affected by the lightning to generate a three-dimensional graph, wherein the three-dimensional graph comprises the energy intensity of each point value;
E. and associating the target area to be detected with the area where the three-dimensional graph is located, wherein the associated content comprises the steps of setting parameters of the target area as the environmental coefficients of the area where the three-dimensional graph is located, and calculating the data cross correlation of the two areas to obtain the information of the target area affected by lightning.
Further, the parameter setting of the target area comprises lightning activity characteristics, line geographic information, line structure characteristics and line insulation characteristic setting of each line in the target area power grid.
Further, the method also comprises the steps that the radio frequency receiver sends a radio frequency signal, the radio frequency receiver processes clutter according to the echo signal received in time sequence, and the processing comprises amplifying circuit processing and conversion processing; and filtering out a noise channel, independently comparing the fluctuation similarity between the noise channel and the echo signal, and calculating the influence degree of lightning on the echo signal. The single-channel gain circuit comprises an automatic gain circuit, wherein the single-channel gain is carried out on noise clutter in the filtered echo signals, and the gain intensity is consistent with the processing multiple of an amplifying circuit.
Furthermore, the overlapping positions of the blocks where the electric field quantity collectors are located include the electric field quantities of the overlapping positions collected by the two or more electric field quantity collectors, abnormal data are removed from the electric field quantities, and the rest of data are subjected to mean processing to serve as the electric field quantities of the overlapping positions.
The invention has the following advantages and beneficial effects:
the method combines the light pulse of the lightning generating area and the electric field data in the cloud layer for comprehensive analysis, determines the correlation degree between the target area to be detected and the generating area, and simultaneously combines the parameter setting of the target area for judging the risk degree of the lightning stroke of the power grid, and the comprehensive analysis data is more comprehensive and has high accuracy.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention is described in detail below with reference to the following figures and embodiments:
a lightning stroke risk assessment method based on a high-precision lightning positioning technology is shown in figure 1 and comprises the following steps:
A. acquiring one or more light pulse signals measured by a plurality of acquisition devices;
B. the method comprises the steps that light pulse signals acquired by a plurality of acquisition devices are subjected to gridding division according to a region set where all the acquired light pulse signal acquisition devices are located, lightning segmentation positions are calculated for three or more acquisition devices in each grid, the lightning segmentation positions are calculated for all the regions in the grid, and all the segmentation positions are combined to obtain a motion model diagram of lightning;
C. receiving cloud layer electric field quantity parameters collected by an electric field quantity collector, and carrying out energy segmentation judgment on a lightning track of a motion model diagram; the lightning track comprises a plurality of electric field quantity collector coverage areas, electric field quantity parameters collected by the electric field quantity collectors are combined, the Euclidean distance of data measured by the overlapping positions of the blocks where the electric field quantity collectors are located is analyzed, and the area range influenced by the electric field quantity driven by lightning is predicted based on a Logitics function;
D. calculating the strength of field intensity signals collected by a radio frequency receiver in an affected area according to the predicted area range affected by the lightning to generate a three-dimensional graph, wherein the three-dimensional graph comprises the energy intensity of each point value;
E. and associating the target area to be detected with the area where the three-dimensional graph is located, wherein the associated content comprises setting parameters of the target area as environment coefficients of the area where the three-dimensional graph is located, and calculating data cross-correlation of the two areas to obtain information of the target area affected by lightning.
Further, the parameter setting of the target area comprises lightning activity characteristics, line geographic information, line structure characteristics and line insulation characteristic setting of each line in the target area power grid. The radio frequency receiver sends radio frequency signals, and processes the signals according to the clutter of the echo signals received in time sequence, wherein the processing comprises processing by an amplifying circuit and conversion processing; and filtering out a noise channel, independently comparing the fluctuation similarity between the noise channel and the echo signal, and calculating the influence degree of lightning on the echo signal. The single-channel gain circuit comprises an automatic gain circuit, wherein the single-channel gain is carried out on noise clutter in the filtered echo signals, and the gain intensity is consistent with the processing multiple of an amplifying circuit. The overlapping positions of the blocks where the electric field quantity collectors are located comprise the electric field quantities of the overlapping positions collected by the two or more electric field quantity collectors, abnormal data are removed from the electric field quantities, and the rest data are subjected to mean processing to be used as the electric field quantities of the overlapping positions.
Claims (5)
1. The lightning risk assessment method based on the high-precision lightning positioning technology is characterized by comprising the following steps of:
A. acquiring one or more light pulse signals measured by a plurality of acquisition devices;
B. the method comprises the steps that light pulse signals acquired by a plurality of acquisition devices are subjected to gridding division according to a region set where all the acquired light pulse signal acquisition devices are located, lightning segment positions are calculated for three or more acquisition devices in each grid, the lightning segment positions are calculated for all the regions in the grids, and a motion model diagram of lightning is obtained by combining all the segment positions;
C. receiving cloud layer electric field quantity parameters collected by an electric field quantity collector, and carrying out energy segmentation judgment on a lightning track of a motion model diagram; the lightning track comprises a plurality of electric field quantity collector coverage areas, electric field quantity parameters collected by the electric field quantity collectors are combined, the Euclidean distance of data measured at the overlapping positions of the blocks where the electric field quantity collectors are located is analyzed, and the area range influenced by the electric field quantity driven by lightning is predicted based on a Logitics function;
D. calculating the strength of field intensity signals collected by a radio frequency receiver in an affected area according to the predicted area range affected by the lightning to generate a three-dimensional graph, wherein the three-dimensional graph comprises the energy intensity of each point value;
E. and associating the target area to be detected with the area where the three-dimensional graph is located, wherein the associated content comprises setting parameters of the target area as environment coefficients of the area where the three-dimensional graph is located, and calculating data cross-correlation of the two areas to obtain information of the target area affected by lightning.
2. The lightning strike risk assessment method based on high-precision lightning location technology according to claim 1, characterized in that the parameter settings of the target area comprise lightning activity characteristics, line geographical information, line structure characteristics, line insulation characteristic settings of each line in the grid of the target area.
3. A lightning strike risk assessment method based on a high-precision lightning positioning technology according to claim 2, characterized by further comprising that the radio frequency receiver sends a radio frequency signal, the radio frequency receiver processes according to echo signal clutter received in a time sequence, and the processing comprises amplification circuit processing and conversion processing; and filtering out a noise channel, independently comparing the fluctuation similarity between the noise channel and the echo signal, and calculating the influence degree of lightning on the echo signal.
4. A lightning strike risk assessment method based on a high precision lightning localization technology according to claim 3, characterized by comprising an automatic gain circuit, wherein the single-channel gain is performed on the noise clutter in the filtered echo signal, and the gain intensity is consistent with the processing multiple of the amplification circuit.
5. The lightning risk assessment method based on a high-precision lightning positioning technology according to claim 4, characterized in that the overlapping positions of the blocks where the plurality of electric field quantity collectors are located include the electric field quantities of the overlapping positions collected by two or more electric field quantity collectors, abnormal data are removed from the electric field quantities, and the rest of the data are processed as the electric field quantities of the overlapping positions by averaging.
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| CN116739185B (en) * | 2023-08-09 | 2023-12-19 | 国网江苏省电力有限公司苏州供电分公司 | Real-time lightning area prediction and line early warning method and system based on lightning energy |
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| CN111881723A (en) * | 2020-06-09 | 2020-11-03 | 南瑞集团有限公司 | Automatic identification method and system for lightning ground flashback waveform and electronic equipment |
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| CN108427041B (en) * | 2018-03-14 | 2020-03-17 | 南京中科九章信息技术有限公司 | Lightning early warning method, system, electronic equipment and storage medium |
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| CN110941902B (en) * | 2019-11-26 | 2023-09-12 | 云南电网有限责任公司 | Lightning stroke fault early warning method and system for power transmission line |
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