Hi folks- I lurk here from time to time, a piker with only one little FE-5650 and a Russian ships' chronometer to my name... oh, a few nixie clocks and a scope clock or so- but I saw this post about the power outage and thought I might contribute this snippet-
From the Risks List- http://catless.ncl.ac.uk/Risks/24.46.html Widespread European power failure <"Peter G. Neumann" <[EMAIL PROTECTED]>> /Sun, 5 Nov 2006 13:17:12 PST/ A high-voltage transmission line was shut down over a river to enable a presumably large ship to pass. This is preliminarily being attributed to a propagating outage that affected something like 10,000,000 people in Germany, France, Italy, Austria, Belgium and Spain. [Source: Danna Avsec, Power failure hits Europe, Associated Press, 05 Nov 2006; PGN-ed, TNX to Lauren Weinstein for noting this one.] http://www.wkyc.com/news/news_article.aspx?storyid=58868 Somewhat ironically, my keynote talk at the ACM CCS 06 included discussions on network-propagating outages in power and telephony, how they keep recurring despite efforts to avoid them, and how they might be prevented. [EMAIL PROTECTED] wrote: >Behalf Of Marco IK1ODO >Sent: Monday, November 06, 2006 3:28 PM >To: Discussion of precise time and frequency measurement >Subject: [time-nuts] Blackout in Europe and power line frequency jump > >Saturday evening part of Europe experienced a blackout, caused, it >seems, by a single failure in Northern Germany, then propagated up to >southern Italy. > >A friend that routinely monitors the 0-120Hz ULF/ELF frequency spectrum >captured the power line frequency jump following the fault. >Hre are the links: > > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > >>Date: Mon, 06 Nov 2006 13:08:40 +0100 >>To: [EMAIL PROTECTED] >>From: Renato Romero <[EMAIL PROTECTED]> >>Subject: Overload in Germany's power network >> >>From BBC web site 06 Nov/06: >>"An overload in Germany's power network triggered outages leaving >>millions without electricity on Saturday night." >> >>Here my ELF monitoring from Cumiana (NW Italy) >> >>http://www.vlf.it/temp/05NOV06-0000_E.jpg >>Spectrogram by a geophone (up) and electric field (down) >> >>http://www.vlf.it/temp/05NOV06-0000_H-rdf.jpg >>RDF spectrogram, magnetic component, acquired with two orthogonal >>minimal loop >> >>http://www.vlf.it/temp/fault.jpg >>Details of the fault: power network frequency get down to 49 Hz for >>many minutes, >> >>http://www.vlf.it/temp/fault_timeb.jpg >>Details in the time domain, about 240 mS showed >> >> >>73, de ik1qfk >>Renato Romero >> >> > > >Renato told me that during the frequency jump a faint 50Hz line was >still present. Possibly some part of the network that had detached from >the rest, or is the Russian network not interconnected with the European >Union? > >Marco IK1ODO > > > ==================-- Paul Nelson W5GNF "When I go, I want to go quietly, in my Ames, Iowa sleep, like my grandfather- not Senior Engineer screaming, like his passengers." Sauer-Danfoss Company ([EMAIL PROTECTED]) "More hay, Trigger?" ex-Cessna 140 N77149 (sigh) "No thanks, Roy, I'm stuffed." _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
