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  • 1.
    Wang, Mian
    et al.
    KU Leuven/EnergyVille, Belgium.
    Jovcic, Dragan
    Aberdeen Institute of Energy, UK.
    Leterme, Willem
    KU Leuven/EnergyVille, Belgium.
    van Hertem, Dirk
    KU Leuven/EnergyVille, Belgium.
    Zaja, Mario
    Aberdeen Institute of Energy, UK.
    Jahn, Ilka
    KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
    Pre-standardisation of Interfaces between DC Circuit Breaker and Intelligent Electronic Device to Enable Multivendor Interoperability2019Conference paper (Refereed)
    Abstract [en]

    DC circuit breakers (DCCBs) are one of the key components to facilitate large meshed HVDC grids. Driven by the needs for achieving high speed, low loss and low cost, various DCCB technologies have been proposed for HVDC applications. Unlike AC circuit breakers (ACCBs), some DCCBs provide a variety of functions, such as proactive opening or fault current limiting (FCL), mainly attributed to the high controllability of the power electronic switches used in such DCCBs. To enable these functions, the intelligent electronic devices (IEDs) are expected to provide signals steering these functions in addition to a trip command. Interoperability between IEDs and DCCBs from different vendors is considered feasible, but expected to be more complex than their AC counterparts, due to the different functions provided by various DCCB technologies. It is therefore crucial to understand which of the functions are essential to fulfil the requirements imposed in HVDC grid protection, and to standardise the interfaces between the IEDs and DCCBs to achieve multivendor interoperability between IEDs and DCCBs provided by different vendors. This paper first classifies the DCCB functions into minimally required and auxiliary ones based on reviewing the existing literature. Then, standardised interfaces between the IEDs and DCCBs are proposed to enable both types of DCCB functions. An example of such IED is implemented in PSCAD/EMTDC to demonstrate that the proposed interfaces are adequate to enable both minimally required and auxiliary functions using a four-terminal test system. Auxiliary functions of hybrid DCCBs, such as proactive opening, fault current limiting, fast reclosing and reopening, breaker failure internal detection and repeated O-C-O operation are demonstrated by simulations.

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