# Development of a computer program for lightning protection design

Abstract

Nowadays many of the design tasks become computerized. For a long time, designing of the protection against lightning was an exception. However there isn’t yet a full sollution for the whole design, more and more softwares can solve some parts of it. One of the parts is calculating the protected areas , which is the task of my thesis.

The program calculates the protected area of the objects in an area, typically buildings. The sollution is shown on screen as height colour scales. Tha algorithm is based on the rolling sphere method and the protected angle method. Completed with two dimension desing and mathematical functions for bigger scalability.

The first part explains the basics of the protection against lightning and the standards. It also shows the design itself in the non computerized way. Then i show my program, and it’s user interface in details.

In the next part i explain the capability and limits of the software in a design task. Then i show it working on a few example of design tasks. I also show the sollution of the program, which is also a geometric sollution, independent from standards as long as any ot the methods are allowed with the program’s parameters. For example the actual MSZ EN 62305, and the previous MSZ 274 hungarian standards both allows most parameters of this program.

Because of a design program, like this is rare, i show the algorithms also in matematical way, and the transforming of the methods to computer algorithms. It might be necessary for the further softwares and researches because any further software, wich need to solve the same tasks and problems first. I also explain the possible problems and errors, with one working practical, and some possible theoretic sollutions.

I also make a list of other softwares and algirythms, both the practically exist and possible ones, to show what can the computers and softwares provide to the engineers.