The Manthan Award South Asia 2011
Title of the Project: Transformer
Protection from Unauthorized Person.
Dhaka, Bangladesh
Presented By:
Engr. Tanvir Ahmed Chowdhury
Engr. Aleya Ferdousi Urmi
Supervisor
Mr. Ashim Kumar Saha
Assistant Professor
Faculty of Engineering
American International University-Bangladesh
(AIUB)
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Content:
 Objective
 Overview
 Cost of the Product
 Background
 Block diagram
 Implementation
 Future work
 Paper published
 Award achievement
 Practical working video
clip
 Website & Other Links
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Objective
 In this project, the idea to protect the transformer from
unauthorized person is mainly come from the national problem
of the rural area of Bangladesh. Day by day Transformer stolen
by the unauthorized person became a verse problem. Because
of this problem every year huge amount of money go in vain.
Especially for the people of rural areas, it is very difficult to
bear this amount. So the project is established by considering
this great problem.
 It is noted that 31st March 2010 The national daily newspaper
“Prothom-alo” also published a article on it.
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Transformer:
A transformer is a device that transfers electrical energy from
one circuit to another. Transformers are essential for high
voltage to low voltage or vise verse. So to give the protection
of this important device this circuit has been implemented.
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Overview of the product:
In this project a non-inverting Op-Amp is used to compare the
on/off conditions which will be provided by the two neutrals
(one is connected to the Transformer side & another is
connected to the customers side). With the disconnection of the
line the amplifier will send off condition (zero). Then it will be
inverted to on condition (one) and send it to the relay. After the
activation of that relay it will contact the switch to the device,
and then a signal will send the central control room. Until the
authority takes any action, it will ring. Under load shedding also
it can be operate, because a charge controller device is
connected to the circuit which will give backup to the device.
The whole device should be packed in an isolated box and it
will be attached to the Transformer.
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Reason for selecting Mobile Network
• Grameenphone was able to keep 98% of its
entire network operational throughout the
critical first 36-hour period after the cyclone,
which battered the Khulna-Barisal coastal belt
and passed through the country.
• Grameenphone has over 15000 base stations
sites located around the country.
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Background of the Product:
 A transformer is a device that transfers electrical energy from
one circuit to another through inductively coupled conductors
the transformer's coils.
 Transformers are essential for high voltage power, which
makes long distance transmission economically practical.
 It is major part of Electricity transmission. So that it is
important for us that it should be kept safe from being wasted.
That is how the idea of the transformer protection got
introduced.
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Block Diagram of the Product
Figure : Block diagram of transformer protection by sending signal
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to the control room.
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Implementation
This circuit has been implemented for the protection of the
transformer in the rural areas of Bangladesh. There are two
switches which has been connected to the neutral. One from
transformer neutral side and another from customers.
Depending on the ON/OFF situation the circuit has been
implemented. Then the output will send to the communication
device ,then it will passed the information to the control room
and it will identify the location of the problem.
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D1
D3
R3
1 kΩ
C1
100uf
AC
D2
R4
13.33 Ω
D4
Transformers
R1
470Ω
R2
470Ω
Opamp 741
Inverter Relay
Coil
Relay
Contacts
Mobile Device
S1
S2
Figure : Schematic diagram which will provide protection to the transformer.
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Operation of the circuit
Case:
I.
When T and C both are close then output show on 1.1V approximately,
after inverted (using NOT gate) the output show “zero” volt and relay does
not operated. Figure is shown below:
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II.
When “T” is close and ”C” is open then output show on 1.1V approximately,
after inverted the output show “zero” volt and relay does not still operated. “T”
is represented by Transformer side neutral and “C” is represented by customers’
side neutral. Figure is shown below:
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III. When “T” is open and “C” is close then output near to zero after Inverted
(using NOT gate) the output show 1V and relay is close and conduct to mobile
device for transmitted the signal to control room. Figure is shown below:
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IV. When “T” and “C” both are open then output near to zero after Inverted (using
NOT gate) the output show 1V and relay is close and conduct to mobile device
for transmitted the signal to control room. Figure is shown below:
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Conditions observed in Graph
Case 3
Case1
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Case 2
Case 4
Case1
Case 2
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PCB Layout
A printed circuit board or PCB, is used to mechanically support and
electrically connect
electronic components using
conductive
pathways, tracks or signal traces etched from copper sheets
laminated onto a non-conductive substrate.
Need for PCB
No wires
Makes a design permanent
In industrial scale production of circuits
So the circuit has been implemented also in the PCB board.
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Printed Circuit Board on
This Project
Patterning (Etching)
Screen Printing
Drilling
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Connect the Components and Soldering
Main Preview of Printed Circuit Board
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Internal view of the Product
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Outside view of the Product
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Cost of the Product:
 The cost of my invented Product or Device is only BDT
5000.That way every rural area poor people easy to buy for
protect his / her area's Transformer from Thief. And Also
Our Bangladesh Govt. can also buy our device at lowest
cost. If the 1st time any problem occur in the transformer
then govt. will give the support but if it is happened again
then consumer itself have to take the responsibility. In case
they will might have to bought the transformer which prize
is 60000-80000.So that amount of prize is not possible to
afford our rural area’s people. That’s why our invented
device is only BDT 5000 , that help to protect Transformer
from Unauthorized person (Thief).
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Future Work
The circuit which has been designed in this project is capable to meet
the demand of the age. It provides a lot of facilities. It is cheaper and
lighter. And the requirement that has been used is also available. It
provides the consumer with the opportunity to have the record the
information. Though this project is successful to detect the problems
but it won’t be fruitful without any physical development. By doing
some additional work it can be developed. suppose by using a sensor
(to sense the problem),alarm(to give alarm to the control room) and a
display board (To identify the problems location) it can be developed.
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Paper Published
 In my B.Sc in Electrical & Electronic Engineering (EEE) course in
the part of Project & Thesis in a group work me and my others
members we invented a device which could protect Transformer from
stolen at the rural area those are control by Rural Electrification
Board (REB). This is renowned by REB member’s engineers. Also
published in “THE DAILY KALERKANTHO” at 8th October’2010.
And THE DAILY PROTHOM-ALO & THE DAILY STAR at 8th
July’2011. Also 7th July, ATN News TV in Bangladesh.
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8th October’ 2010 Published in
“THE DAILY KALERKANTHO”
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THE DAILY STAR at
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th
8
July’2011
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7th July, Live Telecast in ATN News TV
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ATN News TV came to my home for our Project
Briefing.
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Award Achievement
 In
our University
of
American International
University-Bangladesh
(AIUB) 11th convocation
Ceremony, we are selected
for "Best Design Project
Award B.Sc in Electrical &
Electronics (EEE) 2010"
And achieved the "Vice
Chancellor's GOLD Medal
Award" in 11th Convocation
Ceremony.
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Award Received from our University’s Vice Chancellor
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In 7th July ‘2011, Achieved Champion of the National Digital
Innovation Award 2011 contest, as the category of m-Science &
Technology in Bangladesh.
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Others Award Nomination
 Our Project Nominated for the eAsia Award 2011,as the
category of connecting people. It will be held 1-3
December’2011
at
Bangabandhu
International
Conference Center, Dhaka, Bangladesh.
 Our Project was also Nominated for the World Summit
Award 2011 (WSA) in Austria Global contest, as the
category of e-Science & Technology.
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Project is Unique
 Our project is unique.
Because we are apply for
Patent in the
Department of
Patents, Designs and
Trademarks (DPDT),
Ministry of Industries
Govt. of Bangladesh.
And already achieved the
first inventor Patent's 2nd
papers.
 Patent Application
number is 322/2010.
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Practical Working Video Clip
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Website & Other Links
 Our Website Address:
http://www.bestprojectengineer.webs.com
 Other Links:
Link 1:( Page 89-90)
http://www.eaward.org.bd/eaward_new/PDF/Catalogue%202
011.pdf
Link 2:
http://www.eaward.org.bd/eaward_new/
Link 3: YouTube Practical working Video Clip of
Transformer Protection from Unauthorized Person
http://www.youtube.com/watch?v=ZBpBj2N3yoo
Link 4:
http://www.e-asia.org/2011/Default.aspx
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Thank You
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