http://castaway7.infodiscussion.net/feed/? Latest topics Wed, 19 Mar 2008 14:08:19 GMT 10 http://illiweb.com/fa/prosilver/site_logo.gif http://castaway7.infodiscussion.net/feed/? http://castaway7.infodiscussion.net/ideas-f1/all-simulations-now-working-t12.htm Alex
At least it works!]]> Ideas Wed, 19 Mar 2008 14:08:19 GMT http://castaway7.infodiscussion.net/ideas-f1/all-simulations-now-working-t12.htm#25 http://castaway7.infodiscussion.net/ideas-f1/all-simulations-now-working-t12.htm http://castaway7.infodiscussion.net/ideas-f1/simulations-up-to-2028-are-working-t11.htm Alex I've started 2031 but it doesn't work. The upgraded coal plant is producing over 1000MVARs!
It shouldn't take too long to sort out (I hope)

Alex]]> Ideas Tue, 18 Mar 2008 16:32:08 GMT http://castaway7.infodiscussion.net/ideas-f1/simulations-up-to-2028-are-working-t11.htm#24 http://castaway7.infodiscussion.net/ideas-f1/simulations-up-to-2028-are-working-t11.htm http://castaway7.infodiscussion.net/ideas-f1/more-things-to-consider-t10.htm Admin I am in the labs right now by the way, if anyone wants to join me... Anyway - some more thougths. Firstly, we need to get the Powerway simulations finished - if people have spare time can they please come in and help? I am working on a presentation, but have noticed a few things that we need to consider - 1. We have built a coal power station in the mountains - this gives us greater stability if this power station is down for maintenance, but it means that we have increased transmission ... Ideas Mon, 17 Mar 2008 10:25:16 GMT http://castaway7.infodiscussion.net/ideas-f1/more-things-to-consider-t10.htm#20 http://castaway7.infodiscussion.net/ideas-f1/more-things-to-consider-t10.htm http://castaway7.infodiscussion.net/ideas-f1/problem-with-demand-calculations-t9.htm Alex All of our generation figures are an apparent power (MVA) but our loads are a real power. To supply a real load of 100W at a power factor of 0.9 (the minimum as listed in handbook), then it will need an overall apparent power of approx 111MVA. i.e. real component of 100MW and a reactive power of approx 48.3MW (just based on quick and rough calculations). All plant capacities also have a 0.9 power factor associated so a 300MVA CCGT plant would be 270W real and 130MVAR reactive. So ... Ideas Fri, 07 Mar 2008 00:30:55 GMT http://castaway7.infodiscussion.net/ideas-f1/problem-with-demand-calculations-t9.htm#14 http://castaway7.infodiscussion.net/ideas-f1/problem-with-demand-calculations-t9.htm http://castaway7.infodiscussion.net/ideas-f1/google-maps-version-of-sri-lanka-t8.htm Alex
http://maps.google.com/maps/ms?ie=UTF&msa=0&msid=115063475016250246278.000447c7a6b3190e834e7

Should be a bit easier to use for getting an idea of distances between areas etc.]]> Ideas Thu, 06 Mar 2008 18:07:23 GMT http://castaway7.infodiscussion.net/ideas-f1/google-maps-version-of-sri-lanka-t8.htm#12 http://castaway7.infodiscussion.net/ideas-f1/google-maps-version-of-sri-lanka-t8.htm http://castaway7.infodiscussion.net/ideas-f1/not-enough-gas-supplies-t7.htm Alex It would appear that we can import enough gas in order to run two CCGT Plants. I couldn't add it to the current spreadsheet and keep the formulae so I've uploaded a new spreadsheet that should be shared with everyone. Ideas Wed, 05 Mar 2008 21:45:17 GMT http://castaway7.infodiscussion.net/ideas-f1/not-enough-gas-supplies-t7.htm#8 http://castaway7.infodiscussion.net/ideas-f1/not-enough-gas-supplies-t7.htm http://castaway7.infodiscussion.net/ideas-f1/nuclear-t6.htm Admin
More to the point, does anyone want to volunteer to find out?

David]]> Ideas Wed, 05 Mar 2008 19:47:45 GMT http://castaway7.infodiscussion.net/ideas-f1/nuclear-t6.htm#7 http://castaway7.infodiscussion.net/ideas-f1/nuclear-t6.htm http://castaway7.infodiscussion.net/ideas-f1/upgrade-vs-big-build-t5.htm Admin Emailed Sasa Djokic asking about upgrading costs - for example if we built a hydro power station with a capacity of 200MW, and later decided to upgrade it to 400MW what the costs would be. He said the costs would be equivalent to building a new 200MW power station. This means that we can build more power stations (to increase stability) and upgrade them as necessary. The problem with this, is that more power stations means more transmission lines, which cost double in the mountains, so ... Ideas Mon, 03 Mar 2008 18:33:40 GMT http://castaway7.infodiscussion.net/ideas-f1/upgrade-vs-big-build-t5.htm#6 http://castaway7.infodiscussion.net/ideas-f1/upgrade-vs-big-build-t5.htm http://castaway7.infodiscussion.net/ideas-f1/cooling-towers-t3.htm Admin
Still don't know if the additional cost is 25% of the capitol cost of construction for that unit or something else - will email Sasa Djokic to find out.

David]]> Ideas Sat, 01 Mar 2008 16:47:33 GMT http://castaway7.infodiscussion.net/ideas-f1/cooling-towers-t3.htm#3 http://castaway7.infodiscussion.net/ideas-f1/cooling-towers-t3.htm http://castaway7.infodiscussion.net/ideas-f1/updates-to-castaway-spreadsheet-t4.htm Admin Have updated the spreadsheet, but downloaded it to my computer to do so, and now struggling to update the online version with the changes! Hopefully will get this sorted out. Main change (apart from aesthetic stuff) was an error I noticed in the calculation of capitol cost for the hydro stations - it is £800 per kVA, so formula should be 3 x 800 x 100 x 1000 or 800 x 300 x 1000. This makes it £300 million for capitol costs in the first year, so I increased the loan accordingly. Aesthetically, ... Ideas Sat, 01 Mar 2008 16:58:31 GMT http://castaway7.infodiscussion.net/ideas-f1/updates-to-castaway-spreadsheet-t4.htm#4 http://castaway7.infodiscussion.net/ideas-f1/updates-to-castaway-spreadsheet-t4.htm http://castaway7.infodiscussion.net/ideas-f1/purpose-of-forum-t1.htm Admin
Have set up a forum so we can more easily share ideas adn how we are getting on - if you find out information then post it on here so we all know what is happening.

Thanks

David]]> Ideas Thu, 28 Feb 2008 13:23:38 GMT http://castaway7.infodiscussion.net/ideas-f1/purpose-of-forum-t1.htm#1 http://castaway7.infodiscussion.net/ideas-f1/purpose-of-forum-t1.htm