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PRESENTATIoNPRESENTATIoN
Generator fault indicator with auto shut down and overload control (GSM Based)
Project advisor:
Sir Mirza Shabbir
Presenter Moon Shahzad
5
Contents
Historical back ground
Introduction
Motivation
Objectives
Requirements
Operation and control
Block diagram
Over load reasons
Function of current control circuit
Hardware
Applications
Advantages
Future aspects
Historical Back ground
Presently at overload the whole power system is tripped
Halt the continuous power supply
Reducing the efficiency
Which than require manual procedure to come back in operation.
Introduction
Continuous supply
Overload control
Auto trip
Healthy loads stay in operation
Gsm alert
Alarming buzzer
Better supervision
security
Motivation
The reason which motivated us toward this project is that we wanted a digital control (Microcontroller and Gsm Based) generator for controlling overload.
Objectives
1. Automatic and manual mode of operation
2. To isolate the fault condition in the shortest time possible
3. Sensing the system parameters: Current, Voltage Temperature Frequency RPM (Revolution Per
Minute)
4. Protection system
5. Digital display using LCD
6. Serial port interfacing
Requirements
circuit Designing of current and voltage control modules.
Programming of PIC16F877A microcontroller. Designing PCB for each module.
Making circuit hardware of modules.
Assembly of all parts on a single board.
Finalize checking of the working of all circuit modules.
Digital display of current and voltage rating
Secterized loads Industrial, municipal load
Agricultural,
Voltage sensor
Current sensor
Protection relay
Tripping overloaded load only
Alerting system
Operation and control
Overload Reasons
Reasons Under voltage
Short circuit
Over current
Function of current control circuit:
ADC is built in microcontroller to measure the analog parameter.
To monitor and display the generator parameters on the LCD display.
To monitor the variations in the value of parameters of generator to determine whether these values exceed the limit given in the programming.
When any value of parameter exceed the predefined limit specific numbed is send to main control unit through serial port of microcontroller. This number is recognized in the main control unit to trip the load at overload .
A LCD is used for displaying the different parameters.
Hardware Microcontroller PIC16F877A GSM Modem Lcd Relays Crystal Integrated circuits sensors
1.Current transformer2.Voltage transformer3.Rpm sensor4.MAX232
Hardware Ratings
Hardware Ratings
Current monitoring circuit
Voltage monitoring circuit
Advantages
Reliable power source
Only trips the load causing overload
Better supervision
Improve economy
Efficient system
Security in off shift or no load timings
Applications
Industrial base
Banks, Malls, hospitals
Housing schemes, big complexes
Security agencies
Universities, colleges
National grid
Wapda
Future aspects
Queries