2012-2013ELECTRICAL ENGINEERING

GOVERNMENT ENGINEERING COLLEGE ,AJMER

ABHISHEK MATHURVIII th semester

Electrical Branch

Dr. Lata Gidwani

Assistant professor

Guided By :-

Presented By:-

PROTECTION OF INDUCTION MOTOR USING

PLC

A SEMINAR PRESENTATION ON

Seminar Coordinator

Mr. K.G Sharma

Associate professor

ABSTRACT In most modern industries there is a growing need for

high efficiency and availability in motor driver systems.

Moreover, motor operation monitoring is necessary for the implementation of proper and cost effective motor maintenance.

In this research, a PLC-based protection method for three-phase induction motors is used .

The PLC automated process costs less, provides higher accuracy. The PLC correlates and controls the operational parameters to the set point requested by the user and monitor the motor.

INDUCTION MOTOR PROTECTION

INTRODUCTION

o Main aim of this research based project is to design a motor driver system with the help of PLC to control induction motor and protect induction motor from possible faults .

o All operational data is provided by a device that is able to read line currents, line-to-line voltages, unbalanced current, unbalance voltage and temperature.

o This systems are equipped with special I/O units appropriate for direct usage in industrial automation systems

EXISTING SYSTEM Fault Detection and Protection of

Induction motor using PIC Controller in Sept 2006 .

The application of wireless sensor networks for condition monitoring in three-phase induction motors in 2007.

A Connectivity Improving Mechanism for ZigBee Wireless Sensor Networks.

FAULTS

OVERLOAD

UNDER VOLTAGE

OVER VOLTAGE

SINGLE PHASING

EARTH FAULTS

PHASE REVERSAL

PROTECTION SYSTEM HARDWARES

PROGRAMMABLE LOGIC CONTROLLER

POWER SUPPLY

RMS TO DC CONVERSION AD536 A

RS-232 CABLE

CURRENT/VOLTAGE TRANSFORMERS

COMPUTER SYSTEM

PROGRAMMABLE LOGIC CONTROLLER

A PLC is a small computer used for automation of real world processes, such as control of machinery on factory assembly lines.

It was originally developed to replace mechanical relay, timers, counters.

Its purpose to monitor crucial parameters & adjust process operation accordingly.

APPLICATIONS OF PLC

PLC COMPONENTS Sensors - converts a physical

condition into an electrical signal.

Discrete Input/output- referred to as a digital input/output, is an input/output that is either in an ON or OFF condition.

Analog Input/output:-An analog input/output is a continuous, variable signal.

CPU :- is a microprocessor system that contains the system memory & decision making unit.

PLC PROGRAMMING

Statement list Function block

Ladder diagram

The ladder diagram is the most popular programming language

CONNECTION OF PLC

POWER SUPPLY

A Constant Power Supply of 5V is required in the proposed system using rectifiers , filters and voltage regulator.

RMS TO DC CONVERSION(AD536A)

AD536A is a complete monolithic integrated circuit that performs true rms to dc conversion

RS-232 CABLE it is a serial communication physical

interface through which information transfers in or out one bit at a time.

it provides the connection between PLC and computer system.

CURRENT & VOLTAGE TRANSFORMER

A current transformer is a type of "instrument transformer" that is designed to provide a current in its secondary which is accurately proportional to the current flowing in its primary.

Voltage transformers (VT) or potential transformers (PT) are another type of instrument transformer, used for metering and protection in high-voltage circuits.

SOFTWARE INTERFACING

VIEW OF PROTECTION SYSTEM

SCADA MONITORING  SCADA stands for SUPERVISORY

CONTROL AND DATA ACQUISITION

its systems are used to monitor and control a plant or equipment in industries graphically along with the control hardware .

VIEW OF SCADA SOFTWARE

APPLICATION OF SYSTEM

Textile IndustriesIndustrial Pumps & FansElevatorsCement millsRubber millsCranes

FUTURE SCOPE This paper presents a part of an ongoing

work.

In all growing industries ,there is need of motor driver systems to control and monitor of induction motor from one central point using PLC .

This motor driver system will identified the fault and protect the motor within a second

.

CONCLUSION

In this study, a novel digital protection system for three phase Induction motor designed and implemented successfully.

If any fault is observed during online operation of the motor, a warning message appears on computer and then the motor is stopped.

it provides a visual environment, which makes the system more user friendly than other protection system.

REFERENCES M. Peltola, “Slip of ac induction motors and how to minimize it” ABB Drives

Press Releases Technical Paper, ABB, New Berlin, 2003, pp. 1–7.

I. Colak, H.Celik, ˙I.Sefa “On line protection system for induction motors” Energy Convers. Manage.vol. 46, no. 17, pp. 2773–2786, 2005.

A. Siddique, G.S.Yadava, and B.Singh, “A review of stator fault monitoring techniques of induction motors” IEEE Trans. Energy Convers.vol. 20, no. 1, pp. 106114, Mar. 2005.

Y. Zhongming and W. Bin, “A review on induction motor online fault diagnosis” in 3rd Int. Power Electron. Motion Control Conf.(PIEMC 2000),vol. 3, pp. 1353–1358.

M. E. H. Benbouzid, “Bibliography on induction motors faults detection and diagnosis” IEEE Trans. Energy Convers.vol. 14, no. 4, pp. 1065–1074, Dec. 1999.

M.G. Ioannides, “Design and implementation of PLC-based monitoring control system for induction motor,” IEEE Trans. Energy Convers.vol. 19, no. 3, pp. 469–476, Sep. 2004.

QUERIES ????