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TIFAC – CORE

CENTRE OF RELEVANCE AND EXCELLENCEON

POWER TRANSFORMER DIAGNOSTICS

NATIONAL INSTITUTE OF TECHNOLOGY HAMIRPUR

PREVENTION IS BETTER THAN CURE

TIFAC-CORE 

B

O

C

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Mission REACH is an offshoot of the Technology Vision 2020, initiated by Technology Information Forecasting

and Assessment Council (TIFAC) to make India a developed nation by the year 2020. The programme will create a

constellation of world class Centers of Relevance & Excellence (COREs) in diverse disciplines across the country

by the up gradation of science and technical institutions, mandated to produce technical manpower of internationa

standard in the area of targeted excellence and tailor made to the needs of industry. It is the befitting combination

of the three most powerful pillars of economic growth - the industry, academic institutions and the government thaprovides the mission much needed strength and success. NIT Hamirpur is one such centre in the area of Power

Transformer Diagnostics established in September 2005. The activities of this centre are supported by TIFAC, an

autonomous entity under DST- Government of INDIA and from the Industry side by Himachal Pradesh State

Electricity Board (HPSEB).

National Institute of Technology Hamirpur is one of the thirty NITs of the country, established in 1986 as Regional

Engineering College, as a joint and cooperative enterprise of the Govt. of India and Govt. of Himachal Pradesh.The goals of the institute as embodied in the logo are truly remarkable in their scope of vision. The institute

provides Undergraduate, Postgraduate and Doctorate Education in Engineering, Sciences & Humanities; fostering

the spirit of national integration among the students, a close interaction with industry and a strong emphasis on

research, both basic and applied. It has been given the status of institute of national importance.

The campus is situated at Anu in Hamirpur district of Himachal Pradesh and is 4 Kms from main bus stand of

Hamirpur on Hamirpur – Toni Devi road. The city of Hamirpur is well connected with the rest of the country by

road. The nearest broad gauge rail head is at Una (Himachal Pradesh) which is 80 Kms from Hamirpur. The

campus has a picturesque surrounding facing snow clad Dhauladhar mountain ranges. Lush green pine trees

surround it. The campus is well laid with roads, electric installations, water supply, underground drainage, etc. The

place has healthy climate with moderate temperature ranging from 1oC to 38oC with an altitude of 900 meters.

NIT, Hamirpur is running 4-years Bachelor Courses (B.Tech.) in five branches of engineering namely; Civil,Electrical, Mechanical, Electronics & Communication Engineering, Computer Science & Engineering and 5-years

degree course in Architecture. NIT Hamirpur has following departments:

  Mathematics   Civil Engineering

  Physics   Electrical Engineering

  Chemistry   Electronics & Communication Engineering

  Humanities & Social Sciences   Computer Science Engineering

  Mechanical Engineering   Architecture

Besides this NIT, Hamirpur offers PG and PhD programs in diverse areas in all the departments.

PG programme on “Condition Monitoring, Control and Protection of  Electrical Apparatus” (first of its

kind in the country) was launched in June, 2009 and 13 students have been registered for this programme.

MISSION REACH 

ABOUT NIT HAMIRPUR

PG PROGRAM IN TIFAC-CORE

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Transformer failure statistics reported in literature indicate that most failures have occurred before reaching their

expected designed life. Transformer failures related to transformer health conditions, such as dielectric problems

are reported as high as 75 percent. A Health Index is a means of combining information related to the physical

condition of a transformer such as inspection results, test results or condition related risk factors, to provide a

comparable measure of condition for individual transformers in terms of proximity to end of life or probability

of failure.

A survey done by a CIGRE working group on failures in large power transformers found that about 41 % of

failures were due to on-load tap changers (O.L.T.C) and about 19 % were due to the windings. The failure origins

were 53 % mechanical and 31% dielectric. On transformers without on-load tap changers, 26.6 % of failures were

due to the windings, 6.4 % were due to the magnetic circuit, 33.3 % were due to terminals, 17.4 % were due to the

tank and dielectric fluid, 11 % were due to other accessories, and 4.6 % were due to the tap changer. Another

report indicates that the average number of failures over a four-year period (1975 to 1979) was 2.6 failures per year

per 100 transformers. The cost and time to repair and replace a power transformer is very high. The following are

the few pictures which show the explosion of power transformer.

FAILURE OF POWER TRANSFORMERS

SURVAY LITERATURE 

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Centre of Relevance & Excellence (CORE) in “Power Transformer Diagnostics” came into existence since 1s

September, 2004. Since then this centre is making every effort to make its presence felt among leading Electric

Power Utilities. It has been seeking valuable suggestions through regular interaction with industry to make a mark

in the on-line and off-line monitoring of electrical power apparatus in general and power transformer in particular

by creating monitoring and testing facilities of International Standards at TIFAC-CORE.

To meet the major objectives set under Mission REACH program of Govt. of India consistent & continuous effort

are being made to excel in the targeted area through proactive support from its industrial partners including

HPSEB. No organization can survive unless there is Vision and this Vision has to be achieved in a missionary

manner, it require setting up of objectives and plan to achieve the same.

To create a duly accredited S tate of the A rt "Power TransformerC ondition M onitoring and D iagnostic Centre" to cater to the

needs of Industry and A cademia.

  To develop expert manpower to cater to the needs of Industry and Academia in the targeted area, though

suitable academic activities (Elective courses and PG programme on Condition Monitoring of Power

Apparatus)

  To meet the training/retraining needs of manpower engaged in Power utilities all over the country in the

area of power transformer diagnostics

  To create experimental facilities and infrastructure to carry out quality research through sponsored R & D

projects

  To establish linkage with pioneer organizations working in the focused area

  Transformer Monitoring at site

  Aging of solid insulation and improvements

  Detection, location& deformation and intensity of winding deformation due to short-circuit.

  Performance evaluation of transformer feeding steel industry.

  Partial discharge measurement at site.

TIFAC-CORE IN POWER TRANSFORMER 

VISION 

OBJECTIVES

RESEARCH AREAS 

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Power Transformer: Provided by our industrial

partner HPSEB as part of 

agreement to develop TIFAC-

CORE and is used for

demonstration to students and

trainees.

M 4100 Insulation

Analyzer:Measures capacitance, power

factor and watt losses in the

solid/liquid insulation of 

power transformer. Also

leakage reactance, turns ratio,

excitation current etc of in

service power transformers

and power generator analysis.

M 5200 Sweep Frequency

Response Analyzer:Utilized to detect the

mechanical failure or

movement of windings and

core.

HPLC :Measures the furans in the

insulating oil

Interfacial Tension

Analyzer :Measures the Interfacial

Tension of insulation oil.

500 MHz Digital Storage

Oscilloscope: Utilized to observe the wave

shape of an electrical signal

and used in High Voltage labto demonstrate lighting

Impulse test.

Domino Moisture in oil

Analyzer:-Measures the water /moisture

contents in the insulating oil.

FTIR:Measure the oxidation

inhibitors in the insulating oil

Portable Dissolved Gas

Analyzer:Measures the dissolved gases

in the insulating oil.

CKFT:Measure the water contents in

the insulating oil

ADTR-2K, Automatic

Capacitance and Tan Delta

Test Set:Measures the dielectric

constant tan delta and

resistivity of insulation oil

Electronic Balance:Measures weight of the small

sample of insulating oil and

paper

Breakdown Voltage Oil Test

Set: 

Measures the BDV of the

insulating oil.

Instrument for Density

Measurement:Measures the density of 

insulating oil.

Combined TGA,DTA, DSC: Measures the thermal changes

in oil, oxidation induction and

identification of paper

insulation

UV/VIS Spectrophotometer:Measures the dissolved decay

contents of insulating liquids.

Simulation Software’s:

Simulation of electric/electronic circuits using MAT LAB 7

(Simulink), LAB VIEW along with hardware (NI ELVIS) &

Electric/Electronic Circuits. 

SOFTRA:

is designed by Soft bit Technologies Pvt. Ltd.Iit can design

transformer in the range:Distribution Transformer: 25KVA to

2000 KVAPower Transformer: 25 KVA to 10 MVA

MAJOR FACILITIES 

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  To pursue the process of tie ups within and outside the country proactively.

  To introduce Electives in the area of “Power Transformer Diagnostics” at UG and PG level. 

  V-SAT Link connectivity for developing quality linkages/ties with reputed world classorganizations in the targeted area.

  The following equipments are under the procurement process in TIFAC-CORE

Prof. R. N. Sharma

Co-ordinator, TIFAC-CORE

Department of Electrical Engineering

National Institute of Technology

Hamirpur (H.P.)-177005

Phone: 01972- 304526(O)

01972- 304527(R)

E-mail: rnaresh@nith.ac.in 

Prof .I.K. Bhat

Director

National Institute of Technology

Hamirpur (H.P.)-177005

E-mail: director@nith.ac.in

S.N EQUIPMENTS PLANNED TO BE PROCURED SHORTLY

1. Automatic Flash Point Apparatus

2. Automatic Total Sulphur Analyzer Apparatus

3. Automatic Total Acidity Titrator

4. Portable Acoustic Emission System For On-Line PD Measurement In Oil Filled Power Transformers

5. Infrared Thermal Imaging Camera

6. Portable Single Channel Data Collector Cum Vibration Analyzer7. Transformer Winding Resistance and TAP Changer Test Set

8. Portable Digital Partial Discharge Detection System And Analysis Software For Field Testing Of Power

Transformers

9. Automatic insulation diagnostics analyzer

FUTURE PLANS 

CONTACTS 

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