Lightning Protection Using LFA-M
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Computer Science Clay
Active In SP

Posts: 712
Joined: Jan 2009
01-03-2009, 02:19 PM

Lightning Protection Using LFA-M

A new simple, effective and inexpensive method for lightning protection of medium voltage overhead distribution line is using long flashover arresters (LFA). A new long flashover arrester model has been developed. It is designated as LFA-M. It offers great number of technical and economical advantages.

The important feature of this modular long flashover arrester (LFA-M) is that it can be applied for lightning protection of overhead distribution line against both induced overvoltages and direct lightning strokes. The induced over voltages can be counteracted by installing a single arrester on an overhead line support (pole). For the protection of lines against direct lightning strokes, the arresters are connected between the poles and all of the phase conductors in parallel with the insulators.

Lightning is an electrical discharge between cloud and the earth, between clouds or between the charge centers of the same cloud. Lightning is a huge spark and that take place when clouds are charged to at a high potential with respect to earth object (e.g. overhead lines) or neighboring cloud that the dielectric strength of the neighboring medium(air) is destroyed.


There are two main ways in which the lightning may strike the power system . They are

1. Direct stroke

2. Indirect stroke

Direct Stroke

In direct stroke, the lightning discharge is directly from the cloud to the an overhead line. From the line, current path may be over the insulators down to the pole to the ground. The over voltage set up due to the stroke may be large enough to flashover this path directly to the ground. The direct stroke can be of two types

1. stroke A
2. stroke B

In stroke A, the lightning discharge is from the cloud to the subject equipment(e.g. overhead lines). The cloud will induce a charge of opposite sign on the tall object. When the potential between the cloud and line exceed the breakdown value of air, the lightning discharge occurs between the cloud and the line.

In stroke B the lightning discharge occurs on the overhead line as the result of stroke A between the clouds. There are three clouds P,Q and R having positive, negative and positive charge respectively. Charge on the cloud Q is bound by cloud R.If the cloud P shift too nearer to cloud Q,Then lightning discharge will occur between them and charges on both these cloud disappear quickly. The result is that charge on cloud R suddenly become free and it then discharges rapidly to earth, ignoring tall object.
Use Search at wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
seminar paper
Active In SP

Posts: 6,455
Joined: Feb 2012
16-02-2012, 02:42 PM

to get information about the topic protection against overvoltages due to lightning full report ppt and related topic refer the link bellow and presentation-report and presentation-report?pid=52465#pid52465 and presentation-report?pid=42563

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Tagged Pages: lightning protection using lfa thesis, lighning protection using lfa m, lightning protection using lfam, over lightning protection technical seminar, lightning protection using lfa m, lightning protection of overhead line using lfa, protection against overvoltages due to lightning,
Popular Searches: lightning arrestor seminar, electronic project reports on solar lightning, lightning protection institute 175, lightning protection and grounding, latest abstract on lightning protection of overhead lines by lfa m, seminar report for lightning protection using lfa m, lightning protection and lightning protection zone ppt,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  switchgear and protection ppt jaseelati 0 198 09-01-2015, 02:44 PM
Last Post: jaseelati
  surge current protection using superconductors ppt jaseelati 0 216 06-12-2014, 04:14 PM
Last Post: jaseelati
  surge current protection using superconductors full report computer science technology 12 18,857 02-09-2013, 10:15 AM
Last Post: study tips
  Examination Paper Leakage Protection seminar ideas 4 3,372 02-08-2013, 02:57 PM
Last Post: Guest
  Solar-Rains-Wind-Lightning Energy Source Power Generation System pdf study tips 0 420 28-06-2013, 12:46 PM
Last Post: study tips
  Convolutional interleaver for unequal error protection of turbo codes pdf study tips 0 357 17-04-2013, 04:38 PM
Last Post: study tips
  Artificial Intelligent Application to Power System Protection seminar tips 0 434 06-02-2013, 04:16 PM
Last Post: seminar tips
  8 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection project girl 0 330 06-02-2013, 02:51 PM
Last Post: project girl
  Transmission Line Boundary Protection UsingWavelet Transform and Neural Network seminar class 1 1,540 29-11-2012, 12:00 PM
Last Post: seminar tips
  Protection of DG seminar flower 0 389 05-10-2012, 05:17 PM
Last Post: seminar flower