Recommendation ITU-T K.154 (01/2024) Operating telecommunication facilities using lightning strikes data obtained from lightning location systems
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 Data acquired by lightning location system
     6.1 Overview of lightning location system
     6.2 Methods to determine location where lightning strikes
          6.2.1 Direction finding system
          6.2.2 Time of arrival system
          6.2.3 Mixed system
     6.3 Error factor of LLS
7 Guidance for data utilization
     7.1 Overview of the lightning data usage
          7.1.1 Maintenance stage
          7.1.2 Design stage
          7.1.3 Other stages
     7.2 Procedure of how to use LLS data
          7.2.1 Flow chart for utilizing LLS data
          7.2.2 Collecting data
               7.2.2.1 LLS data
               7.2.2.2 Subscriber or population density
               7.2.2.3 Locations of telecommunication facilities
               7.2.2.4 Maintenance data
          7.2.3 Analysing data
     7.3 Evaluating and using analysed results
          7.3.1 Management risk of lightning strike
          7.3.2 Selection of appropriate standards
     7.4 Applications
          7.4.1 Risk management of installations
          7.4.2 Preventing damage by lightning
          7.4.3 Use of data for measurement or monitoring system
8 Best practices
Appendix I  Example of risk assessment for telecommunication facilities based on the IEC 62305 series and ITU-T K.39
     I.1 Calculation method and processing of the data provided by LLS (Ng)
     I.2 Using data Ng to calculate frequency of damage, F
          I.2.1 General rules
     I.3 Using Ng data to assess damages to a telecommunication site
     I.4 Using Ng data to calculate lightning protection level of an AC surge protective device (SPD)
Appendix II  LLS data use case – Orange Labs
     II.1 Introduction
     II.2 Meteorage lightning positioning system
     II.3 France Telecom application
Appendix III  LLS data use case – NTT
     III.1 Introduction
     III.2 Procedure for using lightning position data
     III.3 Summary
Appendix IV  LMS information and best practice in China
     IV.1 Case study of lightning monitoring system (LMS)
     IV.2 Methodology for obtaining lightning current data in telecommunication facilities
          IV.2.1 General rules
          IV.2.2 Power port monitoring
          IV.2.3 Antenna and signal port monitoring
          IV.2.4 Earthing port monitoring
     IV.3 China telecom best practice for LMS
          IV.3.1 Overview of the data acquisition system from lightning monitoring system (LMS) in telecommunication facilities
          IV.3.2 Composition of lightning monitoring system (LMS)
          IV.3.3 Functions provided by a lightning monitoring system (LMS)
          IV.3.4 Installation of a lightning monitoring system (LMS)
          IV.3.5 Mounting method for a lightning monitoring system (LMS)
Bibliography