Summer Training Report on Power Plant

SUMMER TRAINING SUMMER TRAINING REPORTREPORT

At At

BHELBHEL

Anurag Chand

10607032

Overview of Captive Power PlantOverview of Captive Power Plant Established by an industry to meet its own Established by an industry to meet its own

requirements. requirements. Capacity-23.6 MWCapacity-23.6 MW

•Coal Powered

Control & Instrumentation Control & Instrumentation Important ParametersImportant Parameters Temperature –Bimetallic Thermometer, Temperature –Bimetallic Thermometer,

Thermocouples,RTDs,PyrometersThermocouples,RTDs,Pyrometers

Level – Float, Pressure Head , UltrasonicLevel – Float, Pressure Head , Ultrasonic

Pressure – Manometer ,Diaphragm, Pressure – Manometer ,Diaphragm, Bourden Tube, Bellows Bourden Tube, Bellows

Flow-DPT like Orifice , Venturimeter, Dall TubeFlow-DPT like Orifice , Venturimeter, Dall Tube

Electromagnetic FlowmeterElectromagnetic Flowmeter

Boiler : Most ImportantBoiler : Most Important

Boiler ControlsBoiler Controls Drum Level Control Drum Level Control

Single element water level controlSingle element water level control

Two element Level ControlTwo element Level Control

Other Temperature, Flow and Pressure control is done by

-Feedback loop

-Cascaded Feedback loop control

-Feed Forward Control

Ratio ControlRatio Control Ratio control is used to ensure that two flows are Ratio control is used to ensure that two flows are

kept at the same ratio even if the flows are kept at the same ratio even if the flows are changing. E.g. Air-Fuel Ratiochanging. E.g. Air-Fuel Ratio

Automation of Processes Automation of Processes To minimize human intervention to reduce the To minimize human intervention to reduce the

errors errors

Done by PLCs and SCADA

PLC (Programmable Logic Controller)PLC (Programmable Logic Controller)

Digital electronic device that uses a programmable memory to store instructions and to implement specific functions such as logic , sequencing , timing etc to control machine and processes.

PLC Features

•Large no of I/O•Flexibility in programming and reprogramming

Hardware of PLC

Program Scan CycleProgram Scan Cycle

Deadman Switch (Ladder logic)Deadman Switch (Ladder logic)

SCADASCADA Supervisory Control and Data AcquisitionSupervisory Control and Data Acquisition. It generally refers . It generally refers

to an industrial control system: a computer system to an industrial control system: a computer system monitoring and controlling a process. monitoring and controlling a process.

Features

•Only supervisory control

•Redundancy

•Historical and Real Time Trends

•Alarm

•LAN Connectivity

Dynamic Process GraphicDynamic Process Graphic Brought about revolution.Brought about revolution. Has good library of symbols to represent whole Has good library of symbols to represent whole

process process

Thank YouThank You