WelcomeByMd. Abu Jauad Kahn AlivID# 11105137 Student of Bsc.EEE

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Multiple Transformers Oil Temperature Monitoring with

Automatic Circuit Breaker Operation with SMS Based Alerts

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Objective1. Continuous oil temperature reading of multiple

Transformers 2. GSM, SMS based alert 3. LCD display based visual alerts and continuous

monitoring 4. Reliable for industrial needs

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Requirements of Oil Temperature Monitoring

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Hardware Requirement Transformer Temperature Sensor (IC-LM35) Microcontroller (IC-AT89C51) Regulator GSM modem LCD (with driver) & LED

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4 Parts6

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Oil Effects on Transformer

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Why Oil ?

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Function of Transformer OilTo provide dielectric strength of the transformer insulation system

To provide efficient cooling

To protect the transformer core and coil assembly from chemical attack

To prevent the build up of sludge in the transformer

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Importance of Sensor

Measure temperature more accurately than using a thermostatGenerate a higher output voltage than thermocoupleRated for full -55˚ to +150˚C rangeOperates from 4 to 30 voltsLow cost 12

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Regulator

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Importance of Regulator Provided with maximum threshold temperature after which X-former need to turn off Controller also displays the oil temperature over an LCD display Gives Permission to circuit breaker to disconnect the X-former from power line

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Display System

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Getting Information

GSM modem is used for sending the information of critical situation of X-former

Alerts the electricity department through SMS

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Monitoring

Monitored as soon as SMS reached through GPS

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Microcontroller

ADC LCD

ADC

RS 232 INTERFACING

TEMPERATURE SENSOR 1

RELAY DRIVER

RESET

LCD DRIVER

TEMPERATURE SENSOR 2

RELAY

LED INDICATOR

GSM MODEM

Block Diagram

REGULATED POWER SUPPLY

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Summery Initialization of ADC module of Microcontroller

Temperature sensor characteristics

Serial communication protocols

LCD interfacing to Microcontroller21

Question Session

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Thank You

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References www.mycollegeproject.com www.wikipedia.com www.gredesence.com www.energy-seimence.com A Text Book of Electrical Technology

– B.L Theraja

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