Talk:HVDC Inter-Island

message: http://www.gridnewzealand.co.nz/n45.html indicates the max capacity of the link is '1040 MW and it operates at voltages of 270 kV and 350 kV', not 1200 MW @ 400Kv.  It would seem that the link could have a higher capacity at the higher voltages, but possibly the current poles aren't configured to produce voltages at that level.  There's quite a bit of history about the cable here http://www.techhistory.co.nz/Electricity/Cookstcable.htm. Brianegge (talk) 21:48, 18 November 2007 (UTC)
replies: text: This is now fixed.  The new Pole 3 converter stations will operate at 350 kV.  This means that at the commissioning of Pole 3, the operating voltage of the  overhead transmission line conductors and the submarine cable used for Pole 1 will increase from 270 kV to 350 kV.  Marshelec (talk) 09:00, 18 September 2011 (UTC)
thread_title: Untitled

message: I have removed the following content from the background that appeared slightly off topic, and made the background too long.
:The South Island is more mountainous than the North Island, containing 38 of the 40 New Zealand peaks over 2500 m, creating larger resources for hydroelectricity. However, the North Island has numerous natural gas reserves, geothermal areas, and suitable coalfields to support thermal generation (South Island coal is generally harder and more suitable for steel manufacture than electricity generation). Both islands are suited for wind generation, although the North Island has more wind generators currently than the South Island. The South Island has a total generating capacity of 3582 MW (37.8%) – of which 98% is hydroelectricity. The North Island's generating capacity is 5905 MW (62.2%) – of which 31.6% is hydro, 29.6% is gas, 16.0% is coal, 10.8% is geothermal, 7.4% is wind, and 4.6% is other fuels.
Marshelec (talk) 20:01, 10 March 2012 (UTC)
thread_title: Geography content removed

message: I have removed the following content that appears slightly off-topic and is already well covered in New Zealand electricity market
:Deregulation of the electricity industry that occurred the 1990s led to the breakup of the generation previously owned by the Electricity Corporation of New Zealand.  With the exception of Contact Energy, the split up of the Electricity Corporation generators was carried out geographically. As a result, two generating companies (Genesis Power and Mighty River Power) were based solely in the North Island, and one (Meridian) solely in the South Island. Contact Energy owned stations in both islands. If the HVDC link didn't exist, or in the event of an unplanned failure, wholesale electricity prices could rise from a shortfall in generating capacity and reduced competition. Planned outages are often advised in advance to mitigate some effects to the market from the link being out of service.
The HVDC outage planning process and the effect of unplanned outages is already mentioned in the section on Transmission Outages and Faults (although I will try to improve this).
Marshelec (talk) 00:19, 11 March 2012 (UTC)
thread_title: Removed content about industry restructuring

message: The reference source "White Diamonds" quotes the value of the original contract with ASEA for the converter stations as 6.5 million pounds.  It gives an equivalence of $13 million, but this seems of little use for the reader.  It would be much more interesting to see this expressed in dollars of today.  By referring to the site: http://www.rbnz.govt.nz/statistics/0135595.html  we can calculate that for a contract value of one pound established in Q3 of 1961, the escalated value in today's dollars (based on CPI changes) is $41.02.  This makes the contract value around $266 million.  However, this does not take into account movement of the New Zealand currency against the Swedish kronor over that time.  Is this worth taking any further ? Marshelec (talk) 06:24, 16 July 2012 (UTC)
replies: text: The CPI inflated price will do, otherwise there would be too many factors to take into account and things will end up being too complicated - the price of equipment for example. Lcmortensen (mailbox) 11:07, 16 July 2012 (UTC)
thread_title:  Putting historic contract costs into context 

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