Development

1
Development Implementation of a SCADA System
for Load Control of the Power System Simulator
(PSS)
United Arab Emirates University College Of
Engineering Electrical Engineering Department
Graduation Project (II)

• Student Name ID
• Ahmed Fayez Fikry 199905252
• Khalid Yousuf 199900237
• Moh' d Hashem Al Kilani 199901444
• Salman Al katheeri 199900317

2
Software Part

• Troubleshoot
• ISaGraF

3
Troubleshooting

• I/O port in the PC

4
Troubleshooting

• XOR operation (00 or 11 ? 0)
• (01 or 10 ? 1)

5
Troubleshooting

• RTU Diagnostic Switch mode (FE)

6
Under Voltage logic
7
Variables in ISaGRAF
8
Hardware Part
9
Trouble shooting

• Check the electric drawing of the PSS.
• Connection Check.
• Make sure that all the safety considerations are
  functioning well (Interlocks).
• Monitor the response time of the system and try
  to improve it.

10
Adding generator II

• An Extra standby Generator will be added to the
  system
• Generator II will be used in case Generator I
  fails.
• This will increase the system reliability? if one
  generator goes down the loads will still be fed
  by power.
• Adding an extra generator to the system will
  increase the loads that can be supplied by power.

11
Advantages of parallel operations

• Several generators can supply bigger loads than
• one machine itself.
• Increase reliability (what is reliability?).
• - If one fails the total power is not lost.
• If many generators - can shut down one and do
• the maintenance.
• If only one generator, then when operating at
  low
• load it is inefficient.

12
Parallel Operation conditions

• The two generators must have
• Same rms line voltages.
• Same phase sequence.
• Same phase angle.
• Almost same frequency.
• Same phase sequence.
• Then the two generators can be put in
• parallel operation.

13
Parallel Operation

• A syncrocheck

14
Power Factor

• Real Power (P)
• Reactive Power (Q)
• Apparent Power (S)
• S P jQ
• PF P/S cos ?
• 0 lt PF lt1
• "leading" or "lagging" to show the sign of the
  phase angle between the voltage and current.

15
Reactive Power
16
Troubleshooting
17
PF Logic
18
Capacitor Logic
19
Troubleshooting

• Checking the type of wires used in
• the connection and there compatibility.
• (shielded wires or unshielded)

20
Troubleshooting

• Checking the circuit diagrams and the electric
  drawings of the of the PSS.
• Making sure the safety precautions are working
  properly (Interlocks).

21
Adding Generator II

• Generator II will be added to the system
  allowing
• Feeding more loads with power
• Increase system reliability.
• Allows parallel operation with Generator I.

22
Adding Generator II

• In order to add Generator II to the system the
  following components are required
• Active power transducer
• Voltage Transducer.
• Current Transducer.
• Frequency Transducer.

23
Transducers

• A transducer is a device that converts
• one type of energy to another, or responds
• to a physical parameetr, generally it
• has two electrical terminals.

24
Parallel Operation advantages

• Supplying bigger loads
• Increase the system reliability i.e if one
  Generator goes down the network is still
  supplied with power.
• If one generator is open for maintenance the
  network is still supplied with power.

25
Parallel Operation conditions

• Same RMS voltage.
• Same Phase sequence.
• Same Phase difference.
• Almost same frequency
• When these conditions are met its only then that
  the parallel operation is possible.

26
Synchroscope

• The Synchroscope will be used to check the
  frequency and the phase difference of the 2
  generators.
• It will alert the user when the
• two generators are ready
• to be synchronized.

27
Synchroscope

• The rotation of the pointer is with reference to
  the bus voltage.
• Clockwise
• Generator frequency gt BUS frequency. ? speed of
  the generator must be reduced.
• Anticlockwise
• Generator frequency lt BUS frequency. ? speed
  of the generator must be increased.

28

• Thanks for Listening,
• If You have any Questions please Ask.