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

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Presentation transcript:

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

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

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

Nov Transmission of electric power (Bonneville Power Adm.)

Nov Basic Components of Power System (H. Saadat)

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

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

Nov Voltage Collapse (DC circuit); cont.

Nov AC power where:

Nov Power transfer over a transmission line Active power: Reactive Power:

Nov Power transfer curves

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

Nov Voltage collapse (AC circuit) cont.

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

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

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

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

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

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

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

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

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

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

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

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

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

Nov

Nov