Talk:Lyon–Moutiers DC transmission scheme

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia

References[edit]

I'll have to take this one out of the library again:

  • R. M. Black The History of Electric Wires and Cables, Peter Pergrinus, London 1983 ISBN 0 86341 001 4

This talks about the Lyons scheme and has a picture of the cable.

Bill

Bill, this picture and the text actually is online. Regretably the photo is post 1922, or I would have uploaded it. Not much there, but it does corroborate the facts so I will cite it and add whatever details aren't already there. A wild system- 6 miles of underground HVDC in 1906, with all loads in series. Maybe I am imagining the lack of independent loads presented more problems than there actually were. I'd like to know more about that. If it was a hassle, I wonder how they coordinated adding and subtracting loads- do they telegraph the hydro station to tell them they are taking a 300 kW motor offline? -J JMesserly (talk) 00:28, 9 January 2009 (UTC)[reply]
Cool. I'm still looking for a definitive HVDC history but have not had much library time the last few months. From what I've read this was a series constant-current system, so I imagine if a load went off, the source machines would speed up and the governor would bring them back into regulation - compared to an AC system they had no need to keep constant generator speed. Reading about old tech is always humbling - I'm often wondering which of our shiny toys today will be considered laughably complicated and quaint in only a few years. Check out Apollo Guidance Computer and compare with the processors in appliances, etc. --Wtshymanski (talk) 14:51, 9 January 2009 (UTC)[reply]
Check out Alfred Still, Overhead Electric Power Transmission, McGraw Hill, 1913 page 145, available from the Internet Archive, for a description of the Thury system. There's also an article (with list of installations) in the November 1915 edition of the General Electric Journal but I haven't found this on-line; perhaps my local university library has access? --Wtshymanski (talk) 19:00, 22 January 2009 (UTC)[reply]
Interesting. Yes. Google books has "Electric Power Transmission", so you can search for whatever you want in it. I couldn't find General electric journal issue either. Re: computers- yeah. Oddly enough, I am second generation computer geek. my father got his start in computers on one of the first two Univac I's built. After his duty in Korea, he got a job at Boeing replacing tubes in that beast. The Sol computer and Imsai microcomputers I first worked on were roughly equivalent in processing power to the AGC, but the UI on the Imsai was far less friendly- we had to program the bootstrap loader from mylar tape in binary- using toggle switches. It is odd this form of programming, because it is tactile- like a load register A instruction has a certain pattern. If it is from another register one of your fingers flips the toggle up- and it is always that same toggle for source register whether it is loading A or B etc. You are unaware of these details when coding in hexadecimal or symbols. Anyway- all this stuff is a completely lost world to the programmers these days. I feel like I am a cooper sometime describing how to make a barrel to carpenters who are lost without their deWalt battery powered power tools. It's a lost world, but it was glorious while it lasted. I am fiddling with some time-space templates on Commons right now, but I will be back on WP soon to help out on the electricity articles.-J JMesserly (talk) 08:02, 23 January 2009 (UTC)[reply]

External links modified[edit]

Hello fellow Wikipedians,

I have just modified one external link on Lyon–Moutiers DC transmission scheme. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

  • If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
  • If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 22:19, 9 January 2018 (UTC)[reply]

Retrieved from "https://en.wikipedia.org/w/index.php?title=Talk:Lyon–Moutiers_DC_transmission_scheme&oldid=1213580058"