{"id":1916,"date":"2015-10-26T09:33:26","date_gmt":"2015-10-26T09:33:26","guid":{"rendered":"https:\/\/www.svasek.nl\/project\/cobra-cable\/"},"modified":"2023-10-09T14:09:26","modified_gmt":"2023-10-09T14:09:26","slug":"cobra-cable","status":"publish","type":"project","link":"https:\/\/www.svasek.nl\/en\/project\/cobra-cable\/","title":{"rendered":"COBRA cable"},"content":{"rendered":"<p>The COBRA HVDC cable is to connect the Dutch grid at Eemshaven with the Danish grid at Endrup. It will be installed &#8230;<\/p>\n","protected":false},"featured_media":1905,"template":"","tags":[],"project_category":[22,24,27,21,28],"class_list":["post-1916","project","type-project","status-publish","has-post-thumbnail","hentry","project_category-currents-en","project_category-engineering-en","project_category-finel-en","project_category-morphology-en","project_category-swan-en"],"acf":{"download_pdf_button":1915,"download_pdf_button_en":1913,"project_info":{"left":{"diensten":"Trench Sedimentation modelling and installation depth optimisation","opdrachtgever":"TenneT TSO","locatie":"Wadden Sea, the Netherlands","datum":"2014 - 2015"},"right":{"google_map":{"address":"9F58JHW6+RV","lat":53.64712215912637,"lng":6.56223973359376,"zoom":9,"place_id":"GhIJ_sF25tTSSkARKQ2Qw7s_GkA"}}},"content":{"title":"Installation impact & Installation depth optimisation","text":"The COBRA HVDC cable is to connect the Dutch grid at Eemshaven with the Danish grid at Endrup. It will be installed through the morphological dynamic area of the Ems estuary and the Wadden Sea.\r\n\r\nAs an option under the contract it is possible that along parts of the cable route a trench will be dredged prior to cable installation. Dumping of the dredged material close to the trench can be cost efficient as long as the back fill remains low.  Furthermore it is relevant to know the natural sedimentation rates in order to establish the necessary overdepth of the trench to be constructed.\r\n\r\nFor this purpose several simulations have been performed with our process based  hydro-morphological model <a href=\"https:\/\/www.svasek.nl\/model-onderzoek\/finel\/\">FINEL<\/a>\u2013<a href=\"https:\/\/www.svasek.nl\/model-onderzoek\/swan\/\">SWAN<\/a> in 2D modus. This model calculates sediment transports and bottom changes due to both (tidal) currents and waves.\r\n\r\nFor the Wadden Sea section of the COBRA cable significant maintenance on the depth of burial is expected over its 40 years life time. The extent of the maintenance relates, amongst others, to the initial burial depth. Deeper installation to reduce maintenance is faced with significant technical challenges and higher initial costs. As part of a life cycle approach the additional efforts and CAPEX costs for deeper initial installation are to be balanced against the cable burial related efforts and OPEX costs during the operation phase.\r\n\r\nA historical analysis is made of the maintenance frequency and reburial length, if the cable would have been installed in 1985. In the second step a model prediction is made of 40 years of seabed development. The model is validated by comparing the historical data and the hindcast over the period 1985-2014.\r\n\r\nAn important conclusion of the study is that the reduction in maintenance on the depth of burial for deeper installation is significant."},"slider":[{"image":1905,"video":""},{"image":1907,"video":""},{"image":1909,"video":""},{"image":1911,"video":""}],"expert_guy":{"left":{"title":"More information?","content":"Please contact Anna Kroon.","linkedin_link":"https:\/\/www.linkedin.com\/in\/anna-kroon\/","email":"kroon@svasek.nl"},"right":{"title":"Anna Kroon","designation":"Project leader","photo":892}},"cta":{"title":"MORE INFORMATION ABOUT SVA\u0160EK OR OUR EXPERTISES?","text":"Please contact us or make an appointment.","link":{"title":"CONTACT US","url":"https:\/\/www.svasek.nl\/en\/contact\/","target":""}},"custom_links":{"linked_url":""},"hide":[]},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.svasek.nl\/en\/wp-json\/wp\/v2\/project\/1916","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.svasek.nl\/en\/wp-json\/wp\/v2\/project"}],"about":[{"href":"https:\/\/www.svasek.nl\/en\/wp-json\/wp\/v2\/types\/project"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.svasek.nl\/en\/wp-json\/wp\/v2\/media\/1905"}],"wp:attachment":[{"href":"https:\/\/www.svasek.nl\/en\/wp-json\/wp\/v2\/media?parent=1916"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.svasek.nl\/en\/wp-json\/wp\/v2\/tags?post=1916"},{"taxonomy":"project_category","embeddable":true,"href":"https:\/\/www.svasek.nl\/en\/wp-json\/wp\/v2\/project_category?post=1916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}