{"id":1343,"date":"2010-09-30T15:06:32","date_gmt":"2010-09-30T15:06:32","guid":{"rendered":"http:\/\/www.joswassink.nl\/insight\/?p=1343"},"modified":"2010-09-30T15:06:32","modified_gmt":"2010-09-30T15:06:32","slug":"superconducting-breakthrough","status":"publish","type":"post","link":"https:\/\/www.joswassink.nl\/insight\/?p=1343","title":{"rendered":"&#8216;Superconducting breakthrough&#8217;"},"content":{"rendered":"<p><strong> <\/strong><\/p>\n<div id=\"attachment_1344\" style=\"width: 310px\" class=\"wp-caption alignleft\"><strong> <\/strong><strong><a rel=\"attachment wp-att-1344\" href=\"http:\/\/www.joswassink.nl\/insight\/?attachment_id=1344\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1344\" class=\"size-thumbnail wp-image-1344\" title=\"sciencejos_dsc5723bew\" src=\"http:\/\/www.joswassink.nl\/insight\/wp-content\/uploads\/sciencejos_dsc5723bew-300x221.jpg\" alt=\"\" width=\"300\" height=\"221\" \/><\/a><\/strong><p id=\"caption-attachment-1344\" class=\"wp-caption-text\">Ir. Roy Zuijderduin:&quot; Such cables wil be replaced by supercondutors&quot;. (Photo: Tomas van Dijk)<\/p><\/div>\n<p><strong>High voltage researchers last week announced a breakthrough in the  development of a superconducting transmission cable.<\/strong><\/p>\n<p>The Delft high voltage laboratory collaborates with the German-Danish  power cable producer NKT in the development of a high temperature  superconducting (HTS) power cable. The superconducting cable should  replace one of the existing 6 kilometre long transmission cables  connecting the centre of Amsterdam with a distribution point further  north.<!--more--><\/p>\n<p>Losses in the cable should be kept below 1 Watt per meter  for each of the three phases at maximum power (3,000 Amperes at 50,000  Volt). The breakthrough that researchers Roy Zuijderduin and Dr Oleg  Chevtchenko (both from the faculty Electrical Engineering, Mathematics  and Computer Sciences) have achieved is that the losses are \u201can order of  magnitude lower\u201d than this threshold value. NKT cables do not allow  chief researcher Professor Johan Smit to give an exact value for the  measured losses.<\/p>\n<p>Smit explains that minimising the losses is vital  for a superconducting cable, since any heat production has to be cooled  off in order to maintain superconductivity.<br \/>\nOn both sides of the  Amsterdam HTS cable, cooling stations will be pumping liquid nitrogen  down the hollow centre of the cable in order to keep its temperature  below 90 Kelvin. All included, a superconducting cable features about  half the loss of normal high voltage power transmission (typically 5  percent).<\/p>\n<p>The main losses are due to thermal leakage and  alternating electromagnetic fields. By spiralling the thin, 3 millimetre  wide superconducting strips neatly side by side along the hollow  centre, the researchers succeeded in closing any gaps between the tapes,  thus minimising the electromagnetic losses.<br \/>\nSmit foresees HTS cables  taking the place of copper wires in the next decade, not only in power  transmission, but also in motors and generators for wind turbines. This  will be especially true when copper prices rise.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>High voltage researchers from TU Delft announced a breakthrough in the development of a superconducting transmission cable for NKT cables, Germany.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,6],"tags":[227,344,421],"class_list":["post-1343","post","type-post","status-publish","format-standard","hentry","category-articles","category-delta","tag-hts-cables","tag-power-transmission","tag-superconduction"],"_links":{"self":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts\/1343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1343"}],"version-history":[{"count":0,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts\/1343\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}