Protection of multi-terminal and distributed DC systems: Design challenges and techniques

Farhadi, Mustafa; Mohammed, Osama A.

doi:10.1016/j.epsr.2016.10.038

Cited by 79 publications

(50 citation statements)

References 80 publications

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“…Fault conditions are dangerous not only for the system equipment but also for people. Therefore, they should be isolated and cleared as fast as possible (Farhadi and Mohammed, 2017). Hence, HVDC protection systems have to ensure safety and minimize fault impact and component stress.…”

Section: Protection Requirementsmentioning

confidence: 99%

Challenges for Protection of Future HVDC Grids

et al. 2020

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Nowadays, High Voltage Direct Current (HVDC) transmissions are gaining relevance in long distance and renewable energy integration projects over the conventional Alternating Current (AC) transmissions due to several advantages as improved flexibility and independent active and reactive power controllability. Despite that, the high currents and voltage collapses generated by fault conditions in HVDC systems imply some unresolved technical challenges regarding the detection, location and clearance of faults. Faults have to be cleared in a very short time range in order to minimize their impact on the system. For this objective, very fast protection algorithms and reliable HVDC circuit breakers are required. This paper focuses on the technical challenges and limitations of HVDC protection systems. This way, protection requirements and different types of measurement devices are considered. Protection algorithms are classified into local-measurement-based and communication-based, highlighting the most important characteristics. In addition, the different technologies of HVDC circuit breakers are compared. Finally, the characteristics and effects of the different available fault-clearing strategies are presented.

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Section: Protection Requirementsmentioning

confidence: 99%

Challenges for Protection of Future HVDC Grids

et al. 2020

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“…1 Time difference between detection and identification times at relay 13. 2 Time difference between detection and identification times at relay 31. Figure 6.…”

Section: Fault Type Identificationmentioning

confidence: 99%

Analysis of Local Measurement-Based Algorithms for Fault Detection in a Multi-Terminal HVDC Grid

et al. 2019

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One of the most important challenges of developing multi-terminal (MT) high voltage direct current (HVDC) grids is the system performance under fault conditions. It must be highlighted that the operating time of the protection system needs to be shorter than a few milliseconds. Due to this restrictive requirement of speed, local measurement based algorithms are mostly used as primary protection since they present an appropriate operation speed. This paper focuses on the analysis of local measurement based algorithms, specifically overcurrent, undervoltage, rate-of-change-of-current, and rate-of-change-of-voltage algorithms. A review of these fault detection algorithms is presented. Furthermore, these algorithms are applied to a multi-terminal grid, where the influence of fault location and fault resistance is assessed. Then, their performances are compared in terms of detection speed and maximum current interrupted by the HVDC circuit breakers. This analysis aims to enhance the protection systems by facilitating the selection of the most suitable algorithm for primary or backup protection systems. In addition, two new fault type identification algorithms based on the rate-of-change-of-voltage and rate-of-change-of-current are proposed and analyzed. The paper finally includes a comparison between the previously reviewed local measurement based algorithms found in the literature and the simulation results of the present work.

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“…The development of DC power grids is tightly linked to the development of suitable protection systems [188]. The issues related to protection of DC power systems are widely and comprehensively addressed in [189].…”

Section: System Protection and Power Electronics Equipment For Distrimentioning

confidence: 99%

A review of power electronics equipment for all-electric ship MVDC power systems

Castellan

Menis

Tessarolo

et al. 2018

International Journal of Electrical Power & Energy Systems

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Protection of multi-terminal and distributed DC systems: Design challenges and techniques

Cited by 79 publications

References 80 publications

Challenges for Protection of Future HVDC Grids

Challenges for Protection of Future HVDC Grids

Analysis of Local Measurement-Based Algorithms for Fault Detection in a Multi-Terminal HVDC Grid

A review of power electronics equipment for all-electric ship MVDC power systems

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