NRI INSTITUTE OF INFORMATION SCIENCE & TECHNOLOGY

DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING

SEMINAR PRESENTATION ON- “POWER THEFT IDENTIFICATION SYSTEM”

CONTENTS>Introduction-Power theft Definition-How it occurs>Different ways of monitoring power theft >Microcontroller Based power theft monitoring-proposed architecture>Block diagram>Advantages>Disadvantages>Conclusion

INTRODUCTION (POWER THEFT)>it is the use of electrical power without a contract with a supplier with total or partial bypassing of the metering system or interfering with this system in such a way so as to adulterate its measurements,>contract is understood here as a valid oblingation to deliver power and to pay for it.

HOW IT OCCURS ????? 1-(SLOWING DOWN THE METER)>A common method of tempering older meters is to attach magnets to the outside of the meter.>when this happens, the rotor disc is exposed to a high magnetic field. Hence the resultant isopposing magnetic field to the rotor highly increased leading to slowing down of rotor or perfect stopping of the disc rotation.>The electricity meter is thus manipulated and ultimately power is consumed without being paid. Ex-Neodymium magnets

2-(INVERTING THE METER/FEEDER) Another common form of electricity

theft is to invert the meter (pull the meter out of the socket & plug the meter back in upside down, which causes the meter to run backwards & the kWh register to count down instead of up).

MICRO-CONTROLLER BASED POWER THEFT MONITORING OVERVIEW-

The whole system architecture is based on integrating wireless network with existing electrical grid.

The proposed module also incorporates different data aggregation algorithms & effective solutions needed for the different pathways of the electricity distribution system.

PLC (PROGRAMMABLE LOGIC CONTROLLER)

It is a digital computer used for automation of elecctromechanical process.

The PLC’s are designed for multiple input and multiple output.

Program to control machine operation are typically stored in non-volatile memory.

It is an example of a hard real time system since output results must be produced in response to input conditions within bounded time.

PROGRAMMING OF PLC Early PLC’s were programmed by using specific

purpose programming terminals.

The programs were stored in cassette tape cartridges.

Facilities of printing and documentation were very minimal due to lack of memory.

The very old PLC used is non-volatile magnetic core memory.

Modern PLC’s used are EEPROM or EPROM as a memory.

PROGRAMMING OF PLC

MODERN PLC’S.

THANK YOU!

ANY DOUBT…