{"id":1752,"date":"2018-07-16T15:43:50","date_gmt":"2018-07-16T13:43:50","guid":{"rendered":"https:\/\/www.hsu-hh.de\/ees\/?page_id=1752"},"modified":"2021-05-27T13:12:50","modified_gmt":"2021-05-27T11:12:50","slug":"impacts-of-the-decentralised-generation-structure-on-the-coordinated-mains-and-plant-protection","status":"publish","type":"page","link":"https:\/\/www.hsu-hh.de\/ees\/en\/research\/research-aeras\/impacts-of-the-decentralised-generation-structure-on-the-coordinated-mains-and-plant-protection","title":{"rendered":"Impacts of the decentralised generation structure on the coordinated mains and plant protection"},"content":{"rendered":"<h2>Current and perspective situation of the German energy supply system<\/h2>\n<p>The raising share of renewables in power generation affects the power flow direction of the energy supply system as well as its network structure. In traditional energy supply systems with large power plants (left Figure) the power flows downwards from the transmission network (high-voltage level) to consumers in the distribution system (mid-voltage and low-voltage level). Due to the high number of renewables, connected to all voltage levels, the power flow direction is no longer predictable. Thus, the power flow can reverse totally. This change is accompanied by a grid expansion that results in a new supply structure (Figure right).<\/p>\n<p>The system reliability and safety are the major objectives of any network operator. Hence, the mains protection has to detect and switch off failures fast, selective, and safe to guarantee the supply reliability and protection of individuals.<\/p>\n<figure id=\"attachment_1717\" aria-describedby=\"caption-attachment-1717\" style=\"width: 676px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1717\" src=\"https:\/\/www.hsu-hh.de\/ees\/wp-content\/uploads\/sites\/680\/2018\/07\/Abb07-Model-1.jpg\" alt=\"Netzebenen\" width=\"676\" height=\"400\" srcset=\"https:\/\/www.hsu-hh.de\/ees\/wp-content\/uploads\/sites\/680\/2018\/07\/Abb07-Model-1.jpg 2679w, https:\/\/www.hsu-hh.de\/ees\/wp-content\/uploads\/sites\/680\/2018\/07\/Abb07-Model-1-300x178.jpg 300w, https:\/\/www.hsu-hh.de\/ees\/wp-content\/uploads\/sites\/680\/2018\/07\/Abb07-Model-1-768x455.jpg 768w, https:\/\/www.hsu-hh.de\/ees\/wp-content\/uploads\/sites\/680\/2018\/07\/Abb07-Model-1-1024x606.jpg 1024w\" sizes=\"auto, (max-width: 676px) 100vw, 676px\" \/><figcaption id=\"caption-attachment-1717\" class=\"wp-caption-text\"><strong>Figure: <\/strong>New problems arise from the decentralised generation structure<\/figcaption><\/figure>\n<p>Already today the mains protection has to be adapted to the change in power flow and generation. Additional problems which affect the protection principles have to be solved. These problems will aggravate due to the decentralisation of power generation.<\/p>\n<p>The affecting parameters are:<\/p>\n<ul>\n<li>lower short-circuit current capacity,<\/li>\n<li>weather depending short-circuit current capacity,<\/li>\n<li>intended islanding operation of grid areas,<\/li>\n<li>changing network impedance.<\/li>\n<\/ul>\n<p>These parameters and their impact on the mains protection system are evaluated in this cooperation project. Also new protection concepts, including new detection methods for failures, form a main part of the research work.<\/p>\n<h2>Contact Persons:<\/h2>\n<p>Prof. <abbr title=\"Doktor der Ingenieurwissenschaften\">Dr.-Ing.<\/abbr> <abbr title=\"habilitatus\">habil.<\/abbr> Detlef Schulz (<u>subproject manager<\/u>)<br \/>\nFaculty of Electrical Engineering<br \/>\nElektrical Power Systems<\/p>\n<hr \/>\n<h2>Cooperation Partner:<\/h2>\n<h2><\/h2>\n<p><a href=\"https:\/\/www.dehn-usa.com\/en-us\" target=\"_blank\" rel=\"noopener\">DEHN <abbr>SE + Co <abbr title=\"Kommanditgesellschaft\">KG<\/abbr><\/abbr><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Current and perspective situation of the German energy supply system The raising share of renewables in power generation affects the power flow direction of the energy supply system as well [&hellip;]<\/p>\n","protected":false},"author":57,"featured_media":0,"parent":4394,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[348,7],"tags":[],"class_list":["post-1752","page","type-page","status-publish","hentry","category-projects","category-research"],"_links":{"self":[{"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/pages\/1752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/users\/57"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/comments?post=1752"}],"version-history":[{"count":8,"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/pages\/1752\/revisions"}],"predecessor-version":[{"id":4627,"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/pages\/1752\/revisions\/4627"}],"up":[{"embeddable":true,"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/pages\/4394"}],"wp:attachment":[{"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/media?parent=1752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/categories?post=1752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hsu-hh.de\/ees\/wp-json\/wp\/v2\/tags?post=1752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}