A Fast Local Bus Current-Based Primary Relaying Algorithm for HVDC Grids

Azad, Sahar Pirooz; Hertem, Dirk Van

doi:10.1109/tpwrd.2016.2595323

Cited by 61 publications

(10 citation statements)

References 20 publications

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“…Phase domain: Several algorithms for VSC dc systems with cables are reported in the literature [3–14]. However, the choice of domain for the algorithm development is only specified for [13].…”

Section: Review Of Existing Protection Algorithmsmentioning

confidence: 99%

“…In the recent literature on protection algorithms for HVDC grids, e.g. in [3–14], various grid configurations are studied, but the selection of the appropriate domain for protection algorithm design has received insufficient attention. For protection algorithms applied to VSC HVDC grids, the wave propagation characteristics in each domain depend on the combination of HVDC grid configuration, i.e.…”

Section: Introductionmentioning

confidence: 99%

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HVDC grid protection algorithm design in phase and modal domains

Leterme¹,

Azad

Hertem³

2018

IET Renewable Power Generation

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To meet the required operation speed for protection of meshed voltage source converter (VSC) high voltage direct current (HVDC) grids, traveling wave-based algorithms operating in the sub-millisecond time-frame can be used. The domain in which these algorithms operate, i.e., modal or phase, determines their performance in fault discrimination, fault type classification and faulted pole selection. In the recent literature, high-speed algorithms have been proposed for various VSC HVDC grid configurations and transmission line types; yet the choice of domain has received insufficient attention. This paper offers recommendations for the choice of domain for protection algorithm design of HVDC overhead line or cable systems in symmetric monopolar and bipolar configurations. The theoretical analysis of this paper, which is based on fundamental wave propagation theory, indicates that the preferred domain for protection algorithms for cable and overhead line systems are the phase and modal, respectively. Furthermore, the paper provides comprehensive guidelines to construct detection functions for both configurations and discusses the errors introduced by approximations. Finally, study results from a bipolar overhead line test system demonstrate the advantages of modal over phase domain for fast fault discrimination and classification and illustrate practical problems associated with non-ideal detection functions.

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Section: Review Of Existing Protection Algorithmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

HVDC grid protection algorithm design in phase and modal domains

Leterme¹,

Azad

Hertem³

2018

IET Renewable Power Generation

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“…In meshed HVDC grids, the DC fault clearing should typically be achieved in the order of few milliseconds; therefore, selective fault detection and discrimination typically has to be achieved within 1 ms after the fault reaching the relay [9][10][11]. During this time frame, the fault behaviour is dominated by the travelling wave phenomenon.…”

Section: Travelling Waves In Bipolar Hvdc Gridsmentioning

confidence: 99%

“…Although HVDC circuit breakers are not commercially available yet, the development of several HVDC circuit breaker prototypes indicates that interrupting DC currents in the order of kA can be CrossCheck date: 20 June 2016 achieved in just few milliseconds [3][4][5]. In the literature, most research on DC protection has focused on developing fast and selective DC protection algorithms, which can be categorized into unit protection [6,7] and non-unit protection [8][9][10][11][12]. Current differential and travelling wave differential algorithms are proposed in [6,7], respectively, where the first travelling waves are used to distinguish the faulted cable.…”

Section: Introductionmentioning

confidence: 99%

Frequency domain based DC fault analysis for bipolar HVDC grids

Wang

Beerten

Hertem

2017

J. Mod. Power Syst. Clean Energy

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This paper proposes a frequency domain based methodology to analyse the influence of High Voltage Direct Current (HVDC) configurations and system parameters on the travelling wave behaviour during a DC fault. The method allows us to gain deeper understanding of these influencing parameters. In the literature, the majority of DC protection algorithms essentially use the first travelling waves initiated by a DC fault for fault discrimination due to the stringent time constraint in DC grid protection. However, most protection algorithms up to now have been designed based on extensive time domain simulations using one specific test system. Therefore, general applicability or adaptability to different configurations and system changes is not by default ensured, and it is difficult to gain in-depth understanding of the influencing parameters through time domain simulations. In order to analyse the first travelling wave for meshed HVDC grids, voltage and current wave transfer functions with respect to the incident voltage wave are derived adopting Laplace domain based component models. The step responses obtained from the voltage transfer functions are validated by comparison against simulations using a detailed model implemented in PSCAD TM . Then, the influences of system parameters such as the number of parallel branches, HVDC grid configurations and groundings on the first travelling wave are investigated by analysing the voltage and current transfer functions.

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“…Non‐unit protection algorithms commonly use travelling wave signal, voltage deviation etc. [6, 7]. The current protection methods are mostly used for the HVDC system with point‐to‐point or radial topology [8, 9].…”

Section: Introductionmentioning

confidence: 99%