Review and Evaluation of the State of the Art of DC Fault Detection for HVDC Grids

Psaras, Vasileios; Emhemed, Abdullah; Adam, Grain Philip; Burt, Graeme

doi:10.1109/upec.2018.8541961

Cited by 19 publications

(13 citation statements)

References 25 publications

(26 reference statements)

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“…▪ Double-ended protection schemes may not be suitable for the HVDC line main protection because of the long communication delay especially for long lines. A singleended protection scheme based on transients provides faster protection, and the DCCB can be operated with the current limiting reactor (CLR) to reduce the DC fault current [152,153]. Also, more attention should be given to the optimization of the current limiting reactors considering cost and size reduction.…”

Section: Recommendationsmentioning

confidence: 99%

A comprehensive review of DC fault protection methods in HVDC transmission systems

Muniappan

2021

Prot Control Mod Power Syst

141

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High voltage direct current (HVDC) transmission is an economical option for transmitting a large amount of power over long distances. Initially, HVDC was developed using thyristor-based current source converters (CSC). With the development of semiconductor devices, a voltage source converter (VSC)-based HVDC system was introduced, and has been widely applied to integrate large-scale renewables and network interconnection. However, the VSC-based HVDC system is vulnerable to DC faults and its protection becomes ever more important with the fast growth in number of installations. In this paper, detailed characteristics of DC faults in the VSC-HVDC system are presented. The DC fault current has a large peak and steady values within a few milliseconds and thus high-speed fault detection and isolation methods are required in an HVDC grid. Therefore, development of the protection scheme for a multi-terminal VSC-based HVDC system is challenging. Various methods have been developed and this paper presents a comprehensive review of the different techniques for DC fault detection, location and isolation in both CSC and VSC-based HVDC transmission systems in two-terminal and multi-terminal network configurations.

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Section: Recommendationsmentioning

confidence: 99%

A comprehensive review of DC fault protection methods in HVDC transmission systems

Muniappan

2021

Prot Control Mod Power Syst

141

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“…Consequently, the communication time delay is the most limiting parameter in the operation time of a communication-based algorithm (Pérez-Molina et al, 2019). Moreover, protection algorithms using a communication channel are not completely reliable since a problem in the communication channel will make the protection system nonoperative (Psaras et al, 2018). Hence, they are mostly used as backup protection systems (Naidoo and Ijumba, 2005), where the transmission distances are relatively short (Dallas and Booth, 2014) or to protect against high impedance fault conditions where the speed requirements is not so critical.…”

Section: Protection Algorithmsmentioning

confidence: 99%

“…Finally, the AC-CBs are reclosed in order to reenergise the system. Fault-tolerant converters are usually employed in this strategy (Psaras et al, 2018). -Full-selective strategy: The system is divided into different protection zones in order to disconnect only the faulty zone.…”

Section: Fault-clearing Strategiesmentioning

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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“…Due to the almost instantaneous voltage collapse, the ROCOV presents very high values. Hence, the operation speed of this algorithm is very fast [21], [22].…”

Section: Rate Of Change Of Voltagementioning

confidence: 99%

Fault detection based on ROCOV in a multi-terminal HVDC grid

Pérez-Molina¹,

Eguia²,

Larruskain-Eskobal³

et al. 2020

REPQJ

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Protection of a meshed VSC-HVDC grid is a challenge due to the behaviour of DC current and voltage signals during fault conditions. Protection systems must operate in a very short time range. Since fault detection should be very fast, local measurement based algorithms are mostly used; communication based algorithms lack the needed speed as a result of the communication time delay. This way, a ROCOV algorithm is proposed in this paper. This algorithm is analysed for different fault conditions.

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Review and Evaluation of the State of the Art of DC Fault Detection for HVDC Grids

Cited by 19 publications

References 25 publications

A comprehensive review of DC fault protection methods in HVDC transmission systems

A comprehensive review of DC fault protection methods in HVDC transmission systems

Challenges for Protection of Future HVDC Grids

Fault detection based on ROCOV in a multi-terminal HVDC grid

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