Title of the Project: Transformer Protection from Unauthorized Person. Dhaka, Bangladesh Presented By: Engr. Tanvir Ahmed Chowdhury Engr. Aleya Ferdousi

Title of the Project: Transformer Protection from Unauthorized Person.

Dhaka, Bangladesh Presented By:

Engr. Tanvir Ahmed ChowdhuryEngr. Aleya Ferdousi Urmi

Supervisor Mr. Ashim Kumar Saha

Assistant ProfessorFaculty of Engineering

American International University-Bangladesh (AIUB)

The Manthan Award South Asia 2011

Wednesday, April 19, 2023 1

Content:ObjectiveOverviewCost of the ProductBackgroundBlock diagramImplementationFuture workPaper publishedAward achievementPractical working video

clipWebsite & Other Links


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.


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.


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.


• 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.

Reason for selecting Mobile Network


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.


Block Diagram of the Product

Figure : Block diagram of transformer protection by sending signal to the control room.


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.


InverterOpamp 741

R1470Ω

R2470Ω

S 1 S 2

Relay Contacts

Relay Coil

D 1

Mobile Device

D 2

D 3

D 4

C 1100uf

R 31 kΩ

AC

Transformers

R 413.33 Ω

Figure : Schematic diagram which will provide protection to the transformer.Wednesday, April 19, 2023 10

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:

Operation of the circuitCase:


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:


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:


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:


Case1 Case 2

Conditions observed in Graph

Case 3 Case 4

Case1 Case 2


PCB LayoutA 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.


Drilling

Patterning (Etching)

Screen Printing

Printed Circuit Board on This Project


Connect the Components and Soldering

Main Preview of Printed Circuit Board


Internal view of the Product



Outside view of the Product


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).


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.


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.


8th October’ 2010 Published in “THE DAILY KALERKANTHO”


THE DAILY STAR at 8th July’2011


7th July, Live Telecast in ATN News TV


ATN News TV came to my home for our Project Briefing.


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.


Award Received from our University’s Vice Chancellor


In 7th July ‘2011, Achieved Champion of the National Digital Innovation Award 2011 contest, as the category of m-Science & Technology in Bangladesh.


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.


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.

Project is Unique


Practical Working Video Clip


Website & Other LinksOur Website Address:

http://www.bestprojectengineer.webs.com Other Links:Link 1:( Page 89-90)http://www.eaward.org.bd/eaward_new/PDF/

Catalogue%202011.pdfLink 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=ZBpBj2N3yooLink 4:http://www.e-asia.org/2011/Default.aspx


Thank YouWednesday, April 19, 2023 36


Documents

Title of the Project: Transformer Protection from Unauthorized Person. Dhaka, Bangladesh Presented By: Engr. Tanvir Ahmed Chowdhury Engr. Aleya Ferdousi