BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20250309T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20241103T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20241123T150524Z UID:3D378773-495C-4C9C-A28C-80C0B7A85C73 DTSTART;TZID=America/Los_Angeles:20241120T100000 DTEND;TZID=America/Los_Angeles:20241120T110000 DESCRIPTION:The replacement of directly connected synchronous generators wi th power electronics interfaced generation has led to a decrease in system ’s inertia posing a significant challenge on frequency dynamics. In isol ated systems with reduced inertia the role of storage becomes crucial. Ind icative abstracts from the CIGRE WG C6.43 and results from studies in isla nd systems will be overviewed. Moreover\, predefined limits for renewable penetration and primary reserves are frequently set for dynamic security p urposes. This approach might not ensure dynamic security or can prove cons ervative in certain conditions. Furthermore\, these approaches rarely cons ider the capabilities of inverter based renewable generation to provide fr equency services. In this presentation\, a data driven approach\, based on optimal classification trees is described to extract\, from a detailed dy namic model of the system\, the constraints for a frequency dynamic unit c ommitment formulation. Hence\, both dynamic security and optimal exploitat ion of renewable and conventional units for power production and frequency support can be achieved. The advantages of the proposed method compared t o conventional and state of the art approaches in frequency security are v alidated through dynamic simulations on a realistic model of Rhodes island . Its economic performance\, computational overhead and modelling complexi ty is compared to alternative approaches.\n\nDespite the benefits however\ , system operators may be reluctant to embrace AI solutions\, as the model s may be challenging to interpret\, perceived as black boxes. Additional c oncerns may arise regarding the adequacy of testing under realistic condit ions. In the presentation these concerns are addressed by introducing a di gital twin designed for the realistic testing of dynamic security assessme nt applications in the system of Rhodes. The developed digital twin incorp orates two options for the virtual model of the island: an interface with a commercial RMS/EMT software and a real time simulator together with an i ndustrial under frequency load shedding protection equipment. The settings of the actual field devices on the island are tested through a hardware i n the loop interface.\n\nCo-sponsored by: University of California\, River side\n\nSpeaker(s): Dr. Nikolas Hatziargyriou\, \n\nAgenda: \n- Welcome an d Speaker Introduction – 3 minutes\n- Presentation – Approximately 45 minutes\n- Q&A Session – Approximately 10 minutes\n- Future Webinar Anno uncement and Closing Remarks – 2 minutes\n\nVirtual: https://events.vtoo ls.ieee.org/m/444890 LOCATION:Virtual: https://events.vtools.ieee.org/m/444890 ORGANIZER:mail@maxcherubin.com SEQUENCE:24 SUMMARY:Data-Driven Frequency Dynamic Unit Commitment for Island Systems wi th High RES Penetration URL;VALUE=URI:https://events.vtools.ieee.org/m/444890 X-ALT-DESC:Description: <br /><p class="IETPaperTitle" style="text-align: j ustify\;"><span lang="EN-AU" style="font-size: 14pt\; font-family: Aptos\, sans-serif\; font-weight: normal\;">The replacement of directly connected synchronous generators with power electronics interfaced generation has l ed to a decrease in system&rsquo\;s inertia posing a significant challenge on frequency dynamics. In isolated systems with reduced inertia the role of storage becomes crucial. Indicative abstracts from the CIGRE WG C6.43 a nd results from studies in island systems will be overviewed. Moreover\, p redefined limits for renewable penetration and primary reserves are freque ntly set for dynamic security purposes. This approach might not ensure dyn amic security or can prove conservative in certain conditions. Furthermore \, these approaches rarely consider the capabilities of inverter based ren ewable generation to provide frequency services. In this presentation\, a data driven approach\, based on optimal classification trees is described to extract\, from a detailed dynamic model of the system\, the constraints for a frequency dynamic unit commitment formulation. Hence\, both dynamic security and optimal exploitation of renewable and conventional units for power production and frequency support can be achieved. The advantages of the proposed method compared to conventional and state of the art approac hes in frequency security are validated through dynamic simulations on a r ealistic model of Rhodes island. Its economic performance\, computational overhead and modelling complexity is compared to alternative approaches.</ span></p>\n<p><span style="font-size: 14pt\; line-height: 107%\; font-fami ly: Aptos\, sans-serif\;">Despite the benefits however\, system operators may be reluctant to embrace AI solutions\, as the models may be challengin g to interpret\, perceived as black boxes. Additional concerns may arise r egarding the adequacy of testing under realistic conditions. In the presen tation these concerns are addressed by introducing a digital twin designed for the realistic testing of dynamic security assessment applications in the system of Rhodes. The developed digital twin incorporates two options for the virtual model of the island: an interface with a commercial RMS/EM T software and a real time simulator together with an industrial under fre quency load shedding protection equipment. The settings of the actual fiel d devices on the island are tested through a hardware in the loop interfac e.</span></p><br /><br />Agenda: <br /><ul>\n<li><strong>Welcome and Speak er Introduction</strong> &ndash\; 3 minutes</li>\n<li><strong>Presentation </strong> &ndash\; Approximately 45 minutes</li>\n<li><strong>Q&amp\;A Ses sion</strong> &ndash\; Approximately 10 minutes</li>\n<li><strong>Future W ebinar Announcement and Closing Remarks</strong> &ndash\; 2 minutes</li>\n </ul> END:VEVENT END:VCALENDAR