An interesting survey of the costs of various types of lightning damage can be found on the first 3 or 4 pages in. A lightning protection system routes high energy through a defined path and. History of lightning protection system design in tactical sstems many older communication systems do not have lightning protection incorporated into their design. Lightning stock flushing density number of thunderstorm. In addition to detailed earthing design studies, apd offer other engineering services relevant to the earthing system, including lightning protection design as per as 1768 and lighting design as per and australian standard client requirements. Cdrisk software helps to calculate the risk assessment and to design a lightning protection system exhaustively.
Lightning protection air termination system design. The rolling sphere method is included in national fire protection association document nfpa 780 standard for the installation of lightning protection systems. During the design of electrical power system structures, it is necessary to form. Method of lightning protection system for building. A beginners guide to lightning risks and protection. Software tool for estimating the 3d lightning protection. Lightning protection is an essential system for any construction and it is thus necessary to understand the design and usage of this system. We will recreate your site in a cad environment including buildings, structures, equipment and lightning protection devices and generate a lp model using the rolling sphere method.
Home download center electrical software lightning protection risk assessment calculator. Lightning protection initially as part of an nfpa task force, since disbanded assembled for. The basis of conventional lightning protection technology. For this purpose, the iec standard comes with software, and additional.
Online calculators method used for need for lightning protection. The first step to ensuring a facility or asset is lightning protected is to quantify the lightning risk to that facility and its personnel. Arguably, the most common use of a catenary lightning protection system is the overhead ground wire used to protect the phase conductors in power transmission lines. Protection measures such as the lightning protection system lps, shielding wires, magnetic shields, and spd determine the lpzs. Calculate whether lightning protection is required or not for following building. Before implementing a lightning protection system, its important to understand the risks associated with lightning.
This paper discusses the design of a lightning protection system lps as per the prescribed rules in as1768. This video aims to give customers an introduction to. Three types of lightning risks that can cause injury or facility downtime. Lightning protection using rods and meshed conductors is intended to share and dissipate the lightning current through. Development of existing lightning protection standards, in the u.
Lightning protection overview lightning protection institute. Angle method according to this method the protection volume is given by a line which origin is at the air terminal, and which angle depends on the height and the. Method to determine position of airtermination system. This software is ideal for consultants and contractors working in the field of lightning protection, as it has been designed to deliver the optimal, flexible solution for ese lightning.
Empirical design methods classical assume that the shielding device wire or mast can intercept all the lightning strokes arriving over the subject area if the shielding device maintains a certain geometrical relation separation and differential height to the protected object. The generalnature of lightning is discussed in clause 2 and the problems associated with providing protection from direct strikesare described in clause 3. The professional planning and realisation of a comprehensive lightning and surge protection system can be rather complicated. It also looks at special applications where it is either very difficult or impractical to adhere to as1768, and offers alternative practical methods. The standard is based upon rigorous scientific research, testing with real lightning, and more than two hundred years of proven performance. Before installation, using leading accepted industry software such as. Iec 62305 also introduces four lightning protection levels lpl iiv. Iec standards, are the rolling sphere method which is. Graphical analysis and design program of shielding systems against.
Materials used shall be resistant to corrosionmaterials used shall be resistant to corrosion aa coppercopper bb copper alloyscopper alloys cc aluminumaluminum i. Using lightning protection rods and wires as lightning arresters, it visually illustrates the required results in form of the lightning protection volumes and areas. This analysis clarifies the absolute risk of a lightning strike, and enables the client to make a more informed decision on the required lightning protection methods and equipment. Make planning easier with the various calculation programmes in dehnsupport toolbox a software for electrical planning engineers, installers of lightning protection systems and electricians. And, compliant to the local regulations, then you are definitely in the right.
Rolling sphere method for lightning protection ecle. Requirements for lightning protection systems, or nfpa 780, standard for. Lighting simulation testing national technical systems. Either because the investment premium required over and above a conventional approach. Design calculations of lightning protection systems part eight design calculations of lightning protection systems part nine today, i will explain the second method for performing the risk assessment study. Lightning protection design using information visualization and virtual reality. Xgslab is one of the most powerful software of electromagnetic simulation for power, grounding and lightning protection systems and the only software on the market that takes into account iec, en and ieee standards in grounding system analysis. The rolling sphere method can even be used to define the zones of. The rsm recommended in as1768 was developed in the 196070s, and is coming up to its 50 year anniversary. Provide a lightning protection system in accordance with bs 6651 and iec 61024 to protect the building structure and personnel from the risk of a lightning strike. Computer tool for comparison of classical and nonconventional lightning protection designs for electric substations by vinit marathe a thesis presented in partial fulfillment. Calculate no of down conductor for lightning protection area of building structure. Read below to learn the basics of lightning risks, as well as common lightning protection methods to lessen damages. To develop these plans utility design engineers use various methods.
Lightning protection requirements in compliance with as1768. We use stateofart software such as cdegs and emtp rv to simulate and perform. Some equipment facilities are more at risk from a lightning strike due to many factors such as the the region where the facility is located, the construction of the building and whether or not there are any existing lightning protection devices such as surge protectors and grounding electrodes installed. Desigr ers thought that protection was not necessary in many cases because the antenna mast was relatively short 10 meters or less. The dehnsupport toolbox software includes ground flash density data. Above all, because it is not a subject that most people deal with on a daily basis. The software does not require the overheads of an electrical design package, the model can be quickly setup using nonattributed graphics with lightning protection devices added and amended using our custom software. The book had to be revised and enlarged due to changes in standardisation and technical progress.
Calculate lightning protection for building structure. Pdf software tool for estimating the 3d lightning protection zone. The intent of this guide is to provide design information for the methods historically and typically applied bysubstation designers to minimize direct lightning strokes to equipment and buswork within substations. Designing and analysis of lightning protection systems of buildings according to new method rolling sphere described in new norms iec 62. Lightning protection design consultants if you have a concern about. Quickly perform a lightning shielding analysis ses. And, in some of the most active regions of the planet. All electrical installations shall be carried out in accordance with the best international standards and codes of practice specifically with the current issue of the iee regulations bs 7671 and the requirements of the supply authority. Lightning protection simulation and modeling provides a safer and more cost effective process to validate the design of your lightning protection.
Technical description sesshield3d is a powerful software package for the analysis and design of lightning shielding protection systems in complex 3d environments, including substations, power plants, industrial plants and other such installations, accounting for the presence of. Well also look briefly at personal lightning protection. Lightning protection design the conventional way, delivered unconventionally. Much of this lecture and the next are adapted from material in umans the art and science of lightning protection cambridge univ. In article design calculations of lightning protection systems part two, i indicated the lightning protection design process involves a number of design steps as in fig. Engineers at alltec, a global manufacturer and installer of grounding and other lightning protection technologies, have identified methods to bolster a projects ability to withstand lightningrelated hazards using a threestep process called the alltec protection pyramid. Lightning protection system design and products axis electrical. Lightning protection risk assessment design services. From our own designed and manufactured products to systems design advice through to onsite supervision and testing and commissioning, furse can provide a total solution to an organisations. A practical guide to lightning protection and australia and nz. This means if you are looking for an effective lighting design service. Understanding direct lightning stroke shielding of substations understanding direct lightning stroke shielding of substations. Building lighting protection calculation excel september 20, 2015 16 comments. This case study also provides recommendations for future lightning protection design for existing.
I like the software, i compared its results with a risk assessment that i did manually and the. Most protection designs need to be implemented during the overall design phase of a project, before a physical test is possible. Knowing the steps of lightning protection system design process, knowing the definitions of main terms in lightning protection system design process, knowing iec 623052 method of risk assessment study, knowing nfpa 780 method of risk assessment study, knowing software method for performing the risk assessment study. Make planning easier with the various calculation programmes in dehnsupport toolbox. Design calculations of lightning protection systems part.
Copper lightning protection materials shall not becopper lightning protection materials shall not be installed on aluminum roofing, siding or otherinstalled on. Lightning protection calculation lightning protection. Design methods electrogoemetric design methods egm attractive effect of the shielding device is a function of the amplitude of the current of the lightning stroke. Physical damage to structures and life hazard software for design and calculation of lightning protection systems when designing lightning protection systems, various parameters must be taken into account. A catenary is a curve formed by a wire, metallic rop, or chain hanging freely from two points that are on the same horizontal level. Cdegs earthing software shifting the system design. Grey matters has a unique mix of specialist experience covering global lightning protection design solutions. Design calculations of lightning protection systems part twenty. For example, when designing a lightning protection system for a building where. Designing lightning protection with sparkta youtube. Like many other engineering systems, lightning protection is not necessarily a design preference, but the need for a lightning protection system is determined by the requirements of nfpa 70 and nfpa 780, a lightning risk assessment, and oftentimes the facilitys insurance carrier.
Lightning protection system an overview sciencedirect. Dexmet is the exclusive supplier for boeing, principle supplier for embraer, and preferred vendor to a majority of aircraft manufactures around the world. Earthing design, protection and testing apd engineering. There are three protection methods that can be used for the design and installation of an ats. Lpi has implemented an inspection program for completed installations under the. Onsite assessments and evaluations design assistance installation drawings manufacturer certified installations regional support teams lightning protection system design lpsd software institute of electrical and electronics engineers ieee. There are three basic methodologies for determining a protection design scheme. Lightning risk assessment study is actually the measure of risk of a lightning strike and probability of damages. Rolling sphere method for four airtermination rods. Whether you are confronted with a complex grounding design, emf studies, electromagnetic compatibility and interference problems or a lightning or surge transient study, you can rely on cdegss accurate, powerful and integrated software components for a realistic and optimized solution. Software for rolling sphere method of lightning protection. Lightning protection design compliant to bs en 62305.
1307 548 435 509 633 1273 340 657 1435 578 1152 873 950 1416 511 754 218 491 303 1008 961 27 219 1547 1105 331 122 324 334 877 204 327 1369 1209 881 1429 571 1139 1001 385 1394 916