Tuesday, August 09, 2011

A tough power situation in the Tohoku, and its roots in the Meiji period

While TEPCO and its Fukushima crapfest disaster idled power plant still occupy much of what little attention the US press pays to the ongoing electricity crisis in Japan, it's worth noting that Northern Japan is having capacity issues on top of the earthquake and tsunami aftermath. My friends in Southern and Western Japan are in comparatively good shape, electricity-wise, but it's difficult to get surplus power to the East and North due to an interesting quirk in Japan's electrical grid.

Power companies in Western Japan produce power at 60 Hz, while the generating firms in the East produce power at 50 Hz. This discrepancy has its roots in the modernization rush in the Meiji period. The link above gives a great capsule summary - the generating firms in Tokyo and Osaka imported equipment from different countries, and the nation grew to have two frequencies as firms in the East followed Tokyo's lead, and those in the West followed Osaka's.

While the frequency discrepancy doesn't cause problems for most devices that use mains power, the nature of power generation and transmission equipment is such that you can't simply send power from West to East, or the other way. There are a few conversion stations (three, to be precise), but there's only so much capacity per station. The combined 1 GW capacity falls far below the nearly 10 GW shortfall in the East. There is also some limited HVDC transmission capacity between the grids, though it isn't enough to transmit much more power.

The rush to modernize, and the uncoordinated growth stemming from long-held regional rivalries, leaves its mark on Japan even today.

Sunday, March 13, 2011

がんばれ日本! がんばれ東北!

It was very sweet that the Independent in the UK had this phrase on their front page. It's been a very busy and exciting (in the negative sense) few days in Japan. Thankfully, everyone I know is accounted for and safe as far as I know, but many were not so fortunate. I've changed the title of my blog to a more somber phrase for a bit - it's a haiku by Issa, written after the death of his young daughter.

I will have more to say on the situation soon, but right now I'm still in processing mode. My one word of advice to observers is to look past the Fukushima reactor complex problems and focus on the un-sexy but far more important human toll in the Tohoku region.

I will say that it's interesting (and really, rather understandable) that much of the world is paying more attention to the reactor problems than many of the other issues. This is perhaps a common human thing - the quakes are (for now) largely over (this is leaving aside the aftershocks), and the tsunami is done (again, for now), so we pay attention to the immediate drama at Fukushima. I don't think the instant gratification culture is to blame here, rather I think it's just in our nature to be attracted to the more dramatic issues. The cleanup and search efforts are just not as exciting, though I'm sure we'll see a few stories of people beating the odds and surviving in amazing circumstances, but soon enough even this will be forgotten by most people not directly involved.

Give money if you can, give your time if you can, give your thoughts and encouragement if that's all you can give.