On 06/03/2018 14:32, T i m wrote:
On Tue, 6 Mar 2018 14:06:24 +0000, Andy Bennet wrote:

On 06/03/2018 13:52, newshound wrote:
On 06/03/2018 13:46, Andy Burns wrote:
They've lost 5 minutes worth of cycles since mid-January

https://www.entsoe.eu/news-events/announcements/announcements-archive/Pages/News/Frequency-deviations-in-Continental-Europe-including-impact-on-electric-clocks-steered-by-frequency.aspx

Seems surprising.

I'm not sure if the continental grid is kept synchronised across all
countries. In the UK, any daily lag is usually fixed overnight.

I am a bit surprised they have let it drift quite so far though. I guess
it must have been very cold everywhere and they lacked any spare
capacity to catch up even in the quiet hours of early morning.

Good job the interconnctors are DC!

I didn't know / imagine that (or guess why)?

It is even more important in Japan where the east half the island is on
UK 50Hz mains and the west half on US kit at 60Hz. The voltage is also
non-standard at 100v which makes it marginal for real US kit to work.

--
Regards,
Martin Brown