-------- In message <[email protected]>, Peter Reilley wr ites:
>Isn't this "hard" lock to UTC creating a single point of failure? A >solar burst, an EMP, or >a software error could leave us all in the dark. Well, to be honest, all of those things would wreck havoc with any big grid... The bigger concern is what happens when the three GPS receivers on your 1GW nuclear block disagree 10 milliseconds... >After all, smart inverters could be >programmed to act like big lumps of rotating iron and be compatible with >the current system. It is harder than it sounds. Small solar inverters are the best, they an regulate down at milliseconds notice, and many jurisdictions impose asymetric frequency bands on them to exploit this. Big inverters, no matter what you put behind them, get quite a bit more expensive if they are designed to provide "non-VA" power, because you suddenly have to run the current both ways in the same half-cycle. Nobody wants to pay for that voluntarily, and nobody are particular keen to cause the first explosion/fire while they get the control-law debugged. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
