Global Blackouts – Lessons Learned - Siemens
Global Blackouts – Lessons Learned - Siemens
Global Blackouts – Lessons Learned - Siemens
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a)<br />
Blackout: a large Area is out of Supply<br />
Fig. 13: The Blackout Area a) and a Satellite View b), before and after the Outage<br />
Fig. 14 and Fig. 15 depict a view of the systems dynamics during the cascade. It can be seen<br />
that the number of disconnections and fluctuations in power and frequency where in fact<br />
huge. In total, an amount of about 62 GW customer loads were lost, and about 50 million<br />
people in seven states were out of supply. However, 50 GW loads were reconnected within 16<br />
hours.<br />
Source: Cigré Paris Session 2004<br />
Fig. 14: Recordings from HydroOne <strong>–</strong> from 16:05 to 16:12<br />
However, some Islands still have local Supply<br />
b)<br />
Before the Blackout Source: EPRI 2003<br />
Events and GWs<br />
Québec´s HVDCs assist<br />
in Power Supply and<br />
System Restoration<br />
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