SUMMER TRAINING SUMMER TRAINING REPORT REPORT At At BHEL BHEL Anurag Chand 10607032
Nov 18, 2014
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