BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Europe/Copenhagen BEGIN:DAYLIGHT DTSTART:20240331T030000 TZOFFSETFROM:+0100 TZOFFSETTO:+0200 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:CEST END:DAYLIGHT BEGIN:STANDARD DTSTART:20231029T020000 TZOFFSETFROM:+0200 TZOFFSETTO:+0100 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:CET END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20240309T163057Z UID:7C9006A8-160A-42CA-8CA5-9FA91120F2F2 DTSTART;TZID=Europe/Copenhagen:20240306T130000 DTEND;TZID=Europe/Copenhagen:20240306T160000 DESCRIPTION:The world must shift from fossil fuels to renewable energies to combat climate change. Wind turbines and photovoltaic cells can generate renewable electricity from wind and solar energy. Electrolyzers can produc e hydrogen from renewable electricity to substitute natural gas. Hydrogen is envisioned to play a major role in decarbonizing the gas sector. Some g overnments consider building electrolyzers on\nartificial islands - so-cal led energy islands - to produce hydrogen using offshore wind power out on the sea.\n\nAs the available wind and solar power potential varies over ti me\, technologies providing flexibility to compensate for those fluctuatio ns are needed. When there is excess renewable electricity\, electrolyzers can produce hydrogen. If there is a renewable electricity shortage\, gas-f ired power plants can quickly adjust their power production. To be able to do that\, the gas network must provide them with sufficient gas.\n\nNonli near physics characterizes electrolyzers and gas flows in the pipelines. C apturing this nonlinearity in models is essential to ensure that the model results coincide with the physical behavior in practice. Depending on the application\, the modeler should consider a different degree of technical and physical detail. This thesis identifies three modeling levels: compon ent\, system\, and policy. One research direction is pursued on each level \, leading to substantial scientific contributions. On the component level \, this thesis proposes a new model to capture the nonlinear\nrelationship between the power consumption and the hydrogen production of the electrol yzer. A new framework for modeling gas flow physics is proposed on the sys tem level\, generalizing and enabling a comparison of various existing app roaches in the literature. Additionally\, the model results show that cons idering gas flow directions variable increases the flexibility of the gas network. On the policy level\, an electricity market model is used to deri ve recommendations that may enhance the flexibility of electrolyzers on en ergy islands.\n\nThe proposed modeling approaches and policy recommendatio ns can support the integration of electrolyzers and gas networks with powe r systems. The integration contributes to the flexibility potential needed to accommodate massively increasing electricity generation from wind and solar energy.\n\nSpeaker(s): Yannick Werner \n\nVirtual: https://events.vt ools.ieee.org/m/409537 LOCATION:Virtual: https://events.vtools.ieee.org/m/409537 ORGANIZER:tweck@dtu.dk SEQUENCE:2 SUMMARY:PhD defense - Yannik Werner - Modeling Electrolyzers and Gas Networ ks for Integration with Power Systems URL;VALUE=URI:https://events.vtools.ieee.org/m/409537 X-ALT-DESC:Description: <br /><p>The world must shift from fossil fuels to renewable energies to combat climate change. Wind turbines and photovoltai c cells can generate renewable electricity from wind and solar energy. Ele ctrolyzers can produce hydrogen from renewable electricity to substitute n atural gas. Hydrogen is envisioned to play a major role in decarbonizing t he gas sector. Some governments consider building electrolyzers on<br>arti ficial islands - so-called energy islands - to produce hydrogen using offs hore wind power out on the sea.</p>\n<p>As the available wind and solar po wer potential varies over time\, technologies providing flexibility to com pensate for those fluctuations are needed. When there is excess renewable electricity\, electrolyzers can produce hydrogen. If there is a renewable electricity shortage\, gas-fired power plants can quickly adjust their pow er production. To be able to do that\, the gas network must provide them w ith sufficient gas.</p>\n<p>Nonlinear physics characterizes electrolyzers and gas flows in the pipelines. Capturing this nonlinearity in models is e ssential to ensure that the model results coincide with the physical behav ior in practice. Depending on the application\, the modeler should conside r a different degree of technical and physical detail. This thesis identif ies three modeling levels: component\, system\, and policy. One research d irection is pursued on each level\, leading to substantial scientific cont ributions. On the component level\, this thesis proposes a new model to ca pture the nonlinear<br>relationship between the power consumption and the hydrogen production of the electrolyzer. A new framework for modeling gas flow physics is proposed on the system level\, generalizing and enabling a comparison of various existing approaches in the literature. Additionally \, the model results show that considering gas flow directions variable in creases the flexibility of the gas network. On the policy level\, an elect ricity market model is used to derive recommendations that may enhance the flexibility of electrolyzers on energy islands.</p>\n<p>The proposed mode ling approaches and policy recommendations can support the integration of electrolyzers and gas networks with power systems. The integration contrib utes to the flexibility potential needed to accommodate massively increasi ng electricity generation from wind and solar energy.</p> END:VEVENT END:VCALENDAR