Henrik Menne


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Menne

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Henrik

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Publications 1 - 4 of 4
  • Menne, Henrik; Franck, Christian (2018)
    ETG-Fachbericht ~ Tagungsband, Beiträge der Fachtagung VDE-Hochspannungstechnik 2018, 22.-24. November 2018, Berlin. 2018
    The growing need of an HVDC grid requires the development of HVDC circuit breakers. One possible topology is the hybrid HVDC CB. The mechanical Ultra Fast Disconnector determines its performance. The UFD has to separate the contacts within a few milliseconds and provide a low loss current path. To achieve this goal, the development is split into different tasks; one task contains the development and testing of high current contacts. To test such contacts, a test stand was built which allows measuring the contact resistance and heat distribution of the contacts. With this test stand it is possible to test a number of different contact shapes and experimentally verify their performance. The first measurements could be carried out and the results are promising.
  • Menne, Henrik; Franck, Christian (2019)
    2019 IEEE Holm Conference on Electrical Contacts
    Over the last years, the need for HVDC Circuit Breakers became obvious. The first HVDC grids are in operation and more grids are planned. To fully utilize the advantages of a grid, fast and reliable circuit breaker technology is needed. One technology that fulfills these requirements is the Hybrid HVDC Circuit Breaker. The key component of such a breaker is an Ultra Fast (mechanical) Disconnector (UFD). Such a disconnector must have a very short opening time and very low resistance in closed position. The goal of the present work is to develop a completely novel UFD platform. To minimize the opening time, non-overlapping butt contacts are used. Even though no fault current needs to be interrupted, the contact resistance will change during a large number of mechanical switching operations. An automatic test bench is developed to investigate this behavior. The first measurement investigates the influence of a high contact force on contact resistance. The second measurement determines the change of contact resistance during many operations. Both measurements are conducted with copper and chromium based materials. The performed measurements extend the knowledge of contact resistance to higher contact forces and develop an understanding of the change of contact resistance for non-overlapping butt contacts without arcing. This will enable the dimensioning of high current contacts used in a UFD.
  • Menne, Henrik; Franck, Christian (2020)
    2020 CIGRE e-session. Papers and Proceedings
Publications 1 - 4 of 4