TWO DAYS WORKSHOP

ON

LIGHTNING PROTECTION

Organized by

High Voltage Division

Central Power Research Institute

(Govt. Of India Society, Ministry of Power)

Prof. Sir. C.V. Raman Road, P.B. No.8066,

Bangalore - 560 080, Karnataka, India.

Web: www.cpri.in

INTRODUCTION

Lightning is a natural weather related phenomenon, fascinating to watch, but extremely dangerous with

disastrous direct and indirect effects. The direct effect being the high current (in the range of several

hundreds of kilo amperes) passing through structures or equipment or living beings and the indirect effects

being temporary rise of supply voltages for a very short duration, known as current or voltage transients. The

amount of loss of human life and properties due to lightning is significantly high. It is found in the recent years

that lightning kills more people each year than tornadoes or hurricanes globally. The nature of lightning has never

changed. But the structures and systems we expose to it, as well as the need for safety and dependability

have changed dramatically. Understanding of the effects of lightning has also grownup as a result of numerous

research efforts on the interaction of lightning with structures and systems. There are no devices or methods

capable of modifying the natural weather phenomena to the extent that they can prevent lightning discharges.

Lightning flashes to, or nearby, structures (or lines connected to the structures) are hazardous to people, to the

structures themselves, their contents and installations as well as to power and signal lines. Therefore, application

of lightning protection measures is essential. Traditional methods used for protection of ground based facilities

and operating systems against the effect of lightning strikes, including use of air terminals, down conductors

and grounding systems have not been understood fully well (eg. resistance or impedance of earthing

system?). The increasing reliance on sophisticated & sensitive electronic systems for control of critical

functions has created the need to re-evaluate lightning protection design and create new protection systems

to compensate for the inadequacy of traditional methods. And properly protected systems will not only survive

but will continue to function following exposure to direct or nearby lightning strikes. Considering the growing

needs, High Voltage Division, CPRI, Bangalore, India is arranging a 2 days training course in order to create

awareness and educate utilities as well as individuals the significance for lightning protection. It will be a platform

where the utilities can interact with the manufacturers and technical consultants who are into design and

implementation of lightning protection system. The workshops are designed with the view of addressing key

issues related to lightning protection from both direct and indirect effects.

OBJECTIVES

The two-day training program is aimed to create awareness of lightning hazards and offers technical guidance on

- (a) protection of buildings and other structures (including commercial, industrial and heritage sites), (b)

protection of human beings and livestock (from death and injury) and (c) protection of low-voltage operated

electrical and sensitive electronic systems and installations against the direct and indirect effects of lightning

discharges - by applying good engineering practices.

TOPICS

1. Lightning Science – an overview: Thunderstorm development and electrification of thunder cloud, initiation

of a step leader and return stroke, types of flashes, sub-sequent dart leaders and return strokes, upward leaders

and discharges, electrical characteristics of lightning strokes, direct and indirect effects of lightning stroke on

ground based structures, people, electrical and electronic systems.

2. National and International Standards (IS IEC 62305 part 1-4) on Lightning Protection – a summary:

Standards on lightning protection both national and international outlines the technical aspects of lightning (IS

IEC 61643-11, IS IEC 61643-12, IEC 62561 series), guidance on risk assessment, and evaluation of the need for

protection. They also recommend good engineering practices, selection of suitable materials, design and

installation, periodic inspection and maintenance of protection systems.

3. Risk Analysis and Management – a first-step in LPS design: Identification of the sources of damage, type of

damages, consequent losses, defining risk and risk components, tolerance risk, factors influencing risk

components, evaluation of risk components, determination of the need for protection and cost benefits. A sample

case study on risk analysis and management.

4. Structural Protection Against Lightning – both external and internal: Selection of protection level (I to IV)

based on risk assessment, methods of positioning of air-termination systems – (a) rolling sphere (b) protective

angle (c) mesh method, type of air-termination systems, selection of down conductor systems, and earth-

termination systems (A and B type earthing), selection of materials and dimensions, use of natural materials

(metal frame work, reinforced steel and foundation earthing), site inspection and maintenance.

5. Introduction to EMI/EMC – a new concept in lightning protection engineering: Sources of electromagnetic

interference (EMI – natural and man-made), interference coupling mechanism, susceptibility of electrical and

electronic systems. How to control conducted and radiated EMI by grounding (Safety and Signal), use of bonding

networks (CBN, BRC and BM), cable shielding, routing and termination.

6. Protection of LV Electrical/Electronic Systems and Installations – often over looked: Implementation of

Lightning Protection Measure Systems (LPMS) and EMC guidelines, zone of protection, protection measures at

zonal interface (grounding, bonding, shielding and use of SPD), type of SPDs, selection of SPD (power, data and

signal), SPD failure modes and performance monitors, SPD installation guidelines.

7. Earthing Systems – for safety: Low earth resistance of earth termination system and low-impedance of down

–conductor system (key elements of lightning protection system) are essential for effective energy dissipation

without causing fire, side-flash or shock hazards. How to achieve low earth resistance and impedance for the safety

of the people, electrical distribution systems and installation are covered.

8. Practical Aspects of Structural Earthing: Importance of Type B earthing, Foundation earthing, Ring Earthing,

Natural earth electrodes , Importance of shielding , Bonding of RCC to LPS in steel reinforced building, Special care

for building with insulation at the foundation level, controlling step and touch potential inside and outside the

building.

9. Personal Safety – life is precious: No place on the earth is safe against thunder storms and lightning, especially

when you are outdoors. Lightning could strike all exposed objects including buildings, water tanks, hill tops,

vehicles, electrical poles, animals and people. People are either killed or disabled by lightning just because they

take a shelter under a tree or continue to work etc.

10. Protection for Critical Installations of National Importance: Defense installation, Portable communication

Towers, Ships, Structure with risk explosion, RADAR stations etc.

VENUE

CCAR Auditorium, Central Power Research Institute, Prof. Sir. C.V. Raman Road, Sadashivanagar, Bengaluru-

560080.

REGISTRATION

1) Delegates from Industry: Rs. 10,000/- * + 14.5 % service tax.

2) Faculty Members of any Educational Institution & Utilities / Electricity Boards (DISCOMS & Govt. Utilities only):

Rs. 7,000/- + 14.5 % service tax.

3) Students: Rs. 5,000/- + 14.5 % service tax.

* Group discount for an organization for the sponsorship of

a) Minimum 3 participants --- 10% of the total amount.

b) 4 or more participants --- 20% of the total amount.

Registration fee to be paid by DD drawn in favor of “Senior Accounts Officer, CPRI, Bangalore” payable at

Bangalore, along with duly filled in Registration form and to be submitted to the program coordinator on or before

2nd March 2016. The registration is done on first come first serve basis.

Registration fee includes kit, course notes, certificate, Lunch & Tea on both the days of the workshop.

TRAVEL & ACCOMODATION

CPRI will try to provide accommodation in its Guest House (twin share basis) on chargeable basis, subject to

availability. The request for accommodation may please be sent in advance to the program coordinator.

Bangalore is well connected by Road, Rail and Air.

Participants have to make their own travel arrangements.

CPRI is situated on the road between Mekhri Circle and Tata Institute Circle (Indian Institute of Science).

RESOURSE PERSONS:

Prof. Dr. Chandima Gomes is the Head of The Centre for Electromagnetics

and Lightning Protection Research, Malaysia. He is also a Professor of Electrical

Engineering at University Putra Malaysia. He has held Professorships in

Physics, Meteorology and Engineering in several Universities in Asia and Asian

campuses of USA and Australian Universities. Prof. Gomes is a senior consultant

in Lightning Protection for several companies throughout the world. He is also

an international trainer in lightning protection, grounding and bonding and

electrical safety who has conducted over 120 programs in 12 countries so far.

He has published over 200 research papers and several books on his expertise.

Mr. K.V. Varadharajan is a Graduate in Electronics and Communication

Engineering with PG Diploma in Marketing Management. He has more than 15

years of experience in the field of Lightning and Surge protection. He has held

key positions in MTL – India and OBO Bettermann – India, the reputed

international organizations in the field of Power, Signal & Instrumentation

lines transient protection. He has visited Germany, U.K, USA, Hong Kong,

Bangladesh & Sri Lanka and shared his Knowledge and experience to prevent

industry related field failures.

Presently, he is a Director of LP Consultants International Pvt. Ltd. and also holding the position of a distinguished

member of Technical Committee (TC) in Bureau of Indian Standard (BIS) for Low Voltage equipment, He has

written many articles in Electrical Magazines- IEEMA, Electrical India etc. and offered more than 1000

presentations on Lightning and Surge protection to various industries in India and abroad. He has offered guest

lectures in program organized by FICCI, CII, Fire Safety Association of India & offered presentation to Students in

Anna University & IIT- Chennai. He has participated in a TV program on the importance of Lightning and Surge

Protection for a leading Chennai based Tamil TV Channel.

Mr S. Gopa Kumar is the Managing Director of OBO Bettermann India Pvt.

Ltd. He is an Electrical Engineer. He founded Cape Electric near Kanyakumari

and was involved in the development of WIND FARMS during the initial days

of this green energy initiative. He is also involved in the development of various

reactive power compensation techniques during this time including “STATIC

Compensator”.

Cape Electric is into several diversified business now including power

generation, O&M of Wind turbines, outdoor industrial electrical solutions etc.

OBO Bettermann India Pvt. Ltd., is started in 2008 as a Joint Venture with M/s. OBO Bettermann GmbH, Germany

and Cape Electric.

He has done numerous site studies, projects & technical seminars on Lightning Protection System across

continents and have vide experience in civil engineering as well. One of his most remarkable achievement was

establishment of a lightning protection design for Solid-State Interlocking System used in Indian Railways during

2001, which has become a standard practice in Railways now. He is also involved in the drafting of Lightning

Protection and Earthing sections in National Building code 2015 of BIS which is under final stages of publishing.

CPRI PROFILE

Central Power Research Institute (CPRI) set up in 1960 by the Government of India, functions as a National

organization for applied research in power sector and also serves as an Independent Laboratory for testing and

certification of power equipment. CPRI is a member of STL (Short Circuit Testing Liaison) of Europe and is

accredited by M/s ASTA of UK. CPRI also provides consultancy services on various facets of power sector. CPRI has

expertise in the area of Simulation, Diagnostics, System Analysis and Testing. CPRI laboratories have modern

equipment needed for Power system simulation, Short circuit testing, Diagnostics of equipment, Materials

Engineering, Seismic qualification etc. CPRI has experienced faculty in different subjects concerned to power

sector with practical experience in their areas of interest, as well as extensive experience in presenting courses/

seminars. Over the period, CPRI officers have gained lot of practical knowledge concerning to testing and

operational problems of the industry. CPRI is a leading provider of Training and Continuing Education to Utilities,

PSUs across the country for the past 50 years. CPRI is continually setting new standards in training and continuing

education from basic theoretical information to practical hands-on electrical equipment training. CPRI courses

have made substantial impact on the level of training and education to India’s electricity utilities, manufacturing

companies, transmission and distribution companies. By upgrading the occupational skill of technical workers,

CPRI training courses have improved the career path of many electrical personnel as well as contributed to an

improvement in electricity efficiency, plant productivity, electrical system reliability an overall competitiveness of

Indian Industry.

HIGH VOLTAGE DIVISION

The division undertakes quality assurance tests on all electrical equipment as per National (IS) and International

Standards like BS, IEC, ANSI, Canadian standards etc. All the test facilities are of the state of the art type and

compare well with the facilities available at other International laboratories like KEMA-Holland, CESI, Italy, IREQ,

Canada etc., provides consultancy on transmission line insulation related problems and develops indigenous high

voltage test and measurement systems.

Registration form shall be sent by email / fax / Post / to

Programme Co-ordinator

Smt. M. Kanyakumari, Shri. Jithin Pauly P.

HIGH VOLTAGE DIVISION

Central Power Research Institute

Prof. Sir. C. V. Raman Road, Sadashivanagar PO, P.B. No. 8066,

Bangalore – 560080 (INDIA) Tel : 080-23601905(2381) Telefax : 080-23601917,

Mob : 09620078473, 08861556520; Email: kanya@cpri.in, jithin@cpri.in