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Nov. 20031 Voltage Collapse in Electrical Power Systems by Zivan Zabar ECE Dept.

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Presentation on theme: "Nov. 20031 Voltage Collapse in Electrical Power Systems by Zivan Zabar ECE Dept."— Presentation transcript:

1 Nov. 20031 Voltage Collapse in Electrical Power Systems by Zivan Zabar ECE Dept

2 Nov. 20032 Voltage collapse Voltage collapse of an electric distribution network means that the system can no longer maintain voltage at the load site.

3 Nov. 20033 Electrical grid (system) Electrical grid consists of three main components: Generating plants Transmission and distribution networks Customer loads

4 Nov. 20034 Transmission of electric power (Bonneville Power Adm.)

5 Nov. 20035 Basic Components of Power System (H. Saadat)

6 Nov. 20036 Subtransmission Grid & Low-Voltage Secondary Ntwk (W)

7 Nov. 20037 Voltage Collapse (DC circuit) From and we get: and

8 Nov. 20038 Voltage Collapse (DC circuit); cont.

9 Nov. 20039 AC power where:

10 Nov. 200310 Power transfer over a transmission line Active power: Reactive Power:

11 Nov. 200311 Power transfer curves

12 Nov. 200312 Voltage collapse (AC circuit) Power [W]: Reactive power [VAr] Defining:

13 Nov. 200313 Voltage collapse (AC circuit) cont.

14 Nov. 200314 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

15 Nov. 200315 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

16 Nov. 200316 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

17 Nov. 200317 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

18 Nov. 200318 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

19 Nov. 200319 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

20 Nov. 200320 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03] Summary of the situation at 4:10:38

21 Nov. 200321 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

22 Nov. 200322 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

23 Nov. 200323 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

24 Nov. 200324 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

25 Nov. 200325 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

26 Nov. 200326 August 14, 2003 Blackout-- Sequence of events [US/Canada Outage Task Force; 9/12/03]

27 Nov. 200327

28 Nov. 200328

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