Kompakte Schaltanlagen für vermaschte Offshore-HGÜ-Netze - zwischen Vision und Wirklichkeit
Dr. Uwe Riechert absolvierte das Studium der Elektrotechnik an der Technischen Universität Dresden (TUD). 2001 beendete er die Promotion zum Thema: Eignung kunststoffisolierter Kabel für Gleichspannungsanwendungen, ebenfalls an der TUD. Seit 1999 ist er bei der ABB in Zürich/Schweiz tätig. Dort leitete er mehrere Entwicklungsprojekte in den Bereichen gasisolierter Schaltanlagen, Hochstromsysteme und UHV. 2017 wurde er zum Senior Principal Engineer ernannt. Seit 2011 leitetet er Entwicklungsprojekte im Bereich gasisolierter Schaltanlagen und Leistungsschalter für HGÜ Anwendungen. Uwe Riechert ist Mitglied oder Vorsitzender verschiedener CIGRÉ und IEC Arbeitsgruppen sowie Mitglied in den nationalen Gremien DKE und CES TK42, TK122 und TK115 (Vorsitzender).
Compact switchgear for meshed offshore HVDC networks - between vision and reality
The EU funded project “Progress on Meshed HVDC Offshore Transmission Networks” (PROMOTioN) addresses the challenges for meshed HVDC offshore network development. The project does not only perform demonstrations of different HVDC switchgear, it also gives recommendations of how to test HVDC switchgear, and insight into typical requirements and expectations of HVDC switchgear and especially circuit-breakers in a grid. The project will finish in 2020 and all public material can be found on the project website. There is a need to move this work into standardization bodies to get an agreed and satisfactory testing procedure for the HVDC switchgear. An option to decrease the footprint of HVDC substations is to use Gas Insulated Switchgear (GIS). Even though GIS can be used both onshore and offshore, the limited space on offshore platforms makes the technology particularly attractive for offshore applications. If future offshore grids would be considered with multi-terminal or switching stations offshore, the gain would be considerably larger. Moreover, the gas-insulated components can be applied in other HVDC applications like cable transition stations. Although GIS components have been developed, their performance is today relatively unknown to the market. The presentation will show that the new components in a HVDC substation are far into the development phase and are on a clear path to an even higher Technology Readiness Level (TRL). The activities to increase the technical assurance to implement these components in the grid are described. Based on the development and research results combined with the service experience a new type test philosophy including insulation system tests was developed. Standardization work has been started in committees like CIGRE and performance demonstrations are planned in the PROMOTioN project aligned with this standardization work. The presentation provides a comprehensive update on status of standardization and demonstration efforts and provides suggestions for future work.