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  • 1.
    Chaffey, Geraint
    et al.
    ELECTA, KU Leuven, Belgium and EnergyVille, Genk, Belgium.
    Jahn, Ilka
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Elkraftteknik.
    Loenders, Rick
    ELECTA, KU Leuven, Belgium and EnergyVille, Genk, Belgium.
    Leterme, Willem
    ELECTA, KU Leuven, Belgium and EnergyVille, Genk, Belgium.
    Dejene, Firew Z.
    ELECTA, KU Leuven, Belgium and EnergyVille, Genk, Belgium.
    Wang, Mian
    ELECTA, KU Leuven, Belgium and EnergyVille, Genk, Belgium.
    Norrga, Staffan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Elkraftteknik.
    Van Hertem, Dirk
    ELECTA, KU Leuven, Belgium and EnergyVille, Genk, Belgium.
    Requirements for functional testing of HVDC protection IEDs2019Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Development of Intelligent Electronic Devices (IED) for HVDC protection is underway, driven in part by the prospective demands of future multiterminal HVDC systems. There is, however, no consensus on how to test the functionality of an HVDC protection IED. Successful operation of a future multivendor HVDC protection system requires functional specifications and harmonised test procedures for protection system components, including the protection IED. This paper presents an introduction to functional testing methods for HVDC protection IEDs. Evaluating the protection algorithm characteristic using synthetic waveforms is first performed, i.e. ’functional type testing’. Given that test procedures are in part dependent on the protection algorithm, tests are developed and presented for several algorithms. The behaviour of the IED in a power system simulation is then examined during generalised yet representative fault transients, i.e. equivalent to ’dynamic validation type testing’ of AC protection algorithms. The combination of functional and dynamic validation type testing allows the generalised functionality of the IED to be evaluated - testing the algorithm, hardware and software implementation, and overall performance. To provide examples of test procedures, an open-source HVDC IED prototype is tested in a hardware-in-the-loop configuration using a real-time simulator. The operation and accuracy of the protection characteristics are first examined, before the IED performance under representative waveforms is determined. Through tests of several non-unit line protection algorithms, it is shown that, depending on the algorithm applied, the IED is dependable for simulated faults within the protection zone, and secure during external faults. Moreover,the test configurations and procedures required to evaluate the functionality and the criteria for success are developed.

  • 2.
    Jahn, Ilka
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknik, Elkraftteknik.
    Hohn, Fabian
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknik, Elkraftteknik.
    Sharifabadi, Kamran
    Equinor ASA, Fornebu, Norway.
    Wang, Mian
    KU Leuven/EnergyVille, Leuven/Genk, Belgium.
    Chaffey, Geraint
    KU Leuven/EnergyVille, Leuven/Genk, Belgium.
    Norrga, Staffan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknik, Elkraftteknik.
    Requirements for open specifications in multivendor HVDC protection systems2020Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Integrating multiterminal high-voltage direct-current (HVDC) connections into the existing alternating current (AC) power transmission system is a possible solution for transport of large amounts of renewable energy. Protection is considered a key enabler for multiterminal HVDC (MTDC) grids. Designing such a protection system is a challenge, in particular in a multivendor setup. Fault detection during transients might be required to achieve the stringent speed requirements for HVDC protection. This in turn requires knowledge about the expected system behaviour during faults and involves knowledge from all vendors supplying equipment in MTDC grid. Traditionally, HVDC projects are, however, supplied as turn-key solutions and the control and protection systems are the intellectual property of the vendors and not open for the HVDC end-users. This paper aims to provide a starting point on the discussion which information has to be shared between vendorsand HVDC end-users when designing MTDC grid protection. Simulations results show that missing information about certain aspects can lead to a failure of the protection system. A discussion on organization of the available information is added. Open specifications of the used equipment are useful to design safe and reliable MTDC grid protection.

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