Development

1
Development Implementation of a SCADA System
for The Power System Simulator
UAE UniversityCollege of EngineeringTraining
Graduation Project UnitElectrical Engineering
Dept.

• Faculty Advisor
• Dr. Naser Abdel Rahim
• Group Members
• Abdullah Qadri 980711183
• Hamam Abdel Magid 980215148
• Ramsey Selim 980711398
• Mohammed Hassan 199901548

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Contents
Project Objective
Demonstration
System Layout
Software
CITECT
ISaGRAF
Hardware
Remote Terminal Unit
Distribution Board
Power System Simulator
Results Comments
Conclusion Recommendations
3
Problem Definition
4
Project Objective

• Fully automate the Generation Station-3 on the
  PSS
• Automation Sequence
• Start the motor
• Start the generator
• Adjust the optimum operation rating conditions
  (600V, 50Hz)
• Begin power transmission
• Upon load connection
• SCADA system adjusts motor speed, and generator
  voltage to ensure optimum rating conditions

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System Layout
PSS
Computer Software
Distribution Board
RTU
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System Layout
4
1
6
3
5
2
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GPI Review

• Developed the background theory
• Familiarity with the project environment
• First prototype implemented
• Controlled GS-3
• Lacked decision making
• Lacked monitoring options

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Software
Software Approach
CITECT
ISaGRAF
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Software - CITECT

• User friendly interface (GUI)
• Reads the variables from ISaGRAF
• Displays the PSS actions graphically
• The program is divided into several pages

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Software - CITECT
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Software - ISaGRAF

• Many programming options
• Function Block Diagram (FBD)
• A graphical representation of many different
  types of equations
• SCADA programming is done here

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Software - ISaGRAF
Starting Sequence
Automatic Control
Manual Control
Shut Down Sequence
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ISaGRAF Starting Sequence

• Introduces start resistance for 10 sec
• Turn the motor ON in 5 sec
• Turn the generator ON in 15 sec
• Results
• Generator Voltage at 150 V, Frequency lt 45 Hz

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ISaGRAF Automatic Control

• Compares the reading from the sensors to set
  points in the program
• Set the appropriate action based on the error
  signal from comparator blocks
• Necessary interlocks are utilized to avoid
  conflicts between Manual and Automatic Control
• Results Generator Voltage at 600V, frequency at
  50 Hz

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ISaGRAF Manual Control

• The following commands are used along with
  timers
• Rise Motor (for raising the frequency)
• Lower Motor (for lowering the frequency)
• Rise Generator (for raising the output voltage of
  the generator)
• Lower Generator (for lowering the output voltage
  of the generator)
• Results Based on the timers settings, different
  values of generator voltage and frequency are
  obtained

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ISaGRAF Shutdown Sequence

• One command is used to run the whole process of
  shutting down the system
• The process starts by disabling the automatic
  control
• Generator voltage is then lowered to a value of
  150 V
• Motor speed is lowered to its minimum value
• Timers are used to ensure that the motor and the
  generator are running during the above lowering
  processes
• Necessary interlocks are utilized to avoid
  conflicts with manual and automatic commands
• Results The system is OFF. With the generator at
  150V and the motor at minimum speed

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Hardware
Hardware
Remote Terminal Unit
Power System Simulator
Distribution Board
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Hardware - RTU

• RTU Remote Terminal Unit
• Linking point between the software hardware
• Sends feedback signals to the PC delivers the
  actuating commands to the relays

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Hardware - RTU

• The RTU is constructed of several connection
  points
• 32 Digital Inputs
• 16 Digital Outputs
• 12 Analog Inputs
• 4 Analog Outputs

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Hardware - DB

• DB Distribution Board
• Sensors
• Relays
• Circuit breakers
• Duct DIN bars

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Hardware - DB

• Sensors
• Voltage (0-150V)
• Frequency (0-100Hz)
• Power (0-W)
• Current (0-5A)

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Hardware - DB

• Relays
• Control (12V)
• Monitoring (110V)

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Hardware - PSS

• PSS Power System Simulator
• Constructed of
• 3 Generation stations
• 3 Loads
• Residential
• Commercial
• Industrial
• Interconnection Sectionalization

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Hardware - PSS
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Hardware - PSS

• Generation station 3
• Motor
• Generator
• Transformer (208 600V)
• 2 Circuit breakers
• Control
• Monitoring

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Troubleshooting Methods
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Results Comments

• Testing Running the System
• No load
• With load
• RL load
• Lighting
• Combination (RL Lighting)

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Problems Encountered

• Network Restrictions
• Time Delay (CITECT)
• Slow Response (Feedback)
• Power Supply
• Sensor unrealistic readings
• Incomplete Circuitry

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Conclusion Recommendations

• Final Summary
• Impact Significance
• Outcomes
• Recommendations

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Conclusion Recommendations

• Final Summary
• Impact Significance
• Outcomes
• Recommendations

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Conclusion Recommendations Final Summary

• Successfully automated Generation station-3
• ISaGRAF CITECT
• RTU Distribution board
• Successfully tested the SCADA system for various
  loading states (600V 50Hz)
• RL load
• Lighting
• Combination (RL lighting)

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Conclusion Recommendations Impact Significance

• Create local SCADA solutions
• Decreases dependency upon abroad assistance
• Economically effective
• Develop students hardware experience
• Develop students software skills

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Conclusion Recommendations Outcomes

• Great opportunity for hands-on experience
• Developed and improved the engineering skills
• Developed hardware experience
• Developed software experience
• Helped develop progressive thinking

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Recommendations

• System development through complete PSS control
• Create opportunities for EE students to work on
  the system
• Hold seminars in the UAEU concerning all GPII
  projects for the benefit of all students and staff

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Demonstration