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GB/T 40621-2021: [Including 2025XG1] Drawing method of cloud-to-ground lightning density distribution map
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| GB/T 40621-2021 | English | 219 |
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[Including 2025XG1] Drawing method of cloud-to-ground lightning density distribution map
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GB/T 40621-2021
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Basic data | Standard ID | GB/T 40621-2021 (GB/T40621-2021) | | Description (Translated English) | | | Sector / Industry | National Standard (Recommended) | GB/T 40621-2021: [Including 2025XG1] Drawing method of cloud-to-ground lightning density distribution map
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Drawing method of cloud-to-ground lightning density distribution map
ICS 91.120.40
CCSM04
National Standards of People's Republic of China
Method for drawing the distribution map of CG lightning density
Released on 2021-10-11
2022-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Classification rules of CG lightning density grade 2
5 Plotting of the CG lightning density distribution map 2
5.1 Drawing requirements 2
5.2 Lightning data collection and processing 2
5.3 Plotting the distribution map 3
5.4 Drawing 3
Appendix A (informative) Block diagram of the procedure for drawing the distribution of CG lightning density 5
Reference 6
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed and managed by the National Standardization Technical Committee for Lightning Protection (SAC/TC258).
This document was drafted by. State Grid Electric Power Research Institute Wuhan Nanrui Co., Ltd., State Grid Zhejiang Electric Power Co., Ltd., Guangxi Zhuang
National Autonomous Region Lightning Protection Center, State Grid Shaanxi Electric Power Company Electric Power Research Institute, Hebei Meteorological Bureau, State Grid Hubei Electric Power Co., Ltd.
Power Research Institute, State Grid Jiangxi Provincial Electric Power Co., Ltd. Electric Power Research Institute, Hefei Aerospace Power Physics Technology Co., Ltd., North China Electric Power Division
Research Institute Co., Ltd., Shanghai Electric Power University, State Grid Beijing Electric Power Research Institute, State Grid Liaoning Electric Power Co., Ltd.
Division of Electric Power Research Institute.
The main drafters of this document. Gu Shanqiang, Wang Jian, Ding Haifang, Jiang Wendong, Zhi Yaoling, Yao Ximei, Pu Lu, Wu Mengheng, Zhao Chun, Wang Pei, Feng Zhiqiang,
Hu Jing, Li Zhibao, Li Yu, Bian Xiaoyan, Ye Kuan, Zheng Weigang.
Method for drawing the distribution map of CG lightning density
1 Scope
This document specifies the classification rules of the CG lightning density and describes the method of drawing the CG lightning density distribution map.
This document is applicable to the drawing of the CG lightning density distribution map based on the monitoring data of the lightning positioning system.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 24354 General map symbols for public geographic information
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Cloud-to-groundlightning;CG
Atmospheric discharge between clouds and ground.
Note. Consists of one or more lightning strikes.
[Source. GB/T 21714.1-2015, 3.1, with modification]
3.2
Cloud-to-ground lightning density
NG
The average number of ground flashes per unit area and unit time.
Note. The unit is times per square kilometer per year [times/(km2·a)].
[Source. GB/T 37047-2018, 3.1.7, with modification]
3.3
Cloud-to-ground lightning density distribution map
Calculate the density of ground flashes in a certain area, classify according to certain rules, and use the corresponding color rendering for each level for
A graph that characterizes the spatial distribution of ground flash density.
3.4
Lightning location system; LLS
Lightning Positioning System
By detecting the electromagnetic radiation signal generated during the lightning discharge process, using a variety of lightning positioning technologies and methods to determine the occurrence of lightning
A system of multiple lightning parameters such as time, location, and polarity.
Note. There are multiple lightning sensors (also called sub-stations), data processing and system monitoring centers (also called central stations), product output and display located in different geographical locations.
System and supporting communication facilities, etc.
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