DC overcurrent protection-where we stand

Brozek, Josef

doi:10.1109/28.245730

Cited by 50 publications

(15 citation statements)

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“…2 can also be used to approximate DC fault current from a generator rectifier unit. If three diodes of three phases conduct during dominant fault time, for example, at remote fault locations from generator rectifier units, then the fault equivalent impedance can be estimated according to (10) and (11) [19]. This method can provide accurate estimation of fault currents from generator rectifiers.…”

Section: A Fault Current Calculation and Estimationmentioning

confidence: 99%

Design issues and practical application challenges of DC shipboard distribuiton system protection

Liang

2015

2015 IEEE Electric Ship Technologies Symposium (ESTS)

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This paper gives an overview on issues and challenges of DC shipboard distribution protection. Typical fault characteristics in DC shipboard distribution systems are determined by different sources at DC faults. Issues in protection design include fast and accurate fault current estimation, fast and selective fault location methods, and effective fault current control. One main challenge in practical applications of DC protection is cost effectiveness, which impacts applications of DC distribution technology.

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Section: A Fault Current Calculation and Estimationmentioning

confidence: 99%

Design issues and practical application challenges of DC shipboard distribuiton system protection

Liang

2015

2015 IEEE Electric Ship Technologies Symposium (ESTS)

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“…However, because MCCBs are optimized for AC systems, these devices are sub-optimally applied to DC systems [2]- [5]. Furthermore, current limited MCBBs in combination with upstream current limited power electronic converters present additional complications [4], [5].…”

Section: Introductionmentioning

confidence: 98%

Circuit breaker protection considerations in power converter-fed DC Systems

Cuzner¹,

MacFarlin²,

Clinger³

et al. 2009

2009 IEEE Electric Ship Technologies Symposium

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“…In various applications, such as telecommunication systems, shipboard and spacecraft, and distribution systems involving a large number of electronic loads and data centers, dc architectures provide a more effective solution for electric power distribution [1]- [4]. However, there is a widespread concern over the means used to protect the system against short circuit faults, especially in multisource distribution systems and multiterminal dc lines [5]- [10].…”

Section: Introductionmentioning

confidence: 99%

Event-Based Protection Scheme for a Multiterminal Hybrid DC Power System

Farhadi

Mohammed

2015

IEEE Trans. Smart Grid

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In this paper, we investigate an event-based protection scheme for a multiterminal dc power system, which includes hybrid energy resources and various loading schemes. The proposed protection scheme transfers less data when compared with commonly used data-based protection methods, and does not require high-speed communication and synchronization. Each protection unit is able to autonomously identify the type of event using the current derivative fault identification method, employing an artificial inductive line impedance. In order to accurately set the protection relays, detailed fault current analysis considering low pass resistor capacitor filter effects are presented. The decision for fault isolation is made based on the unit judgment and the data received through high-level data communication from other interconnected units. The performance of the proposed protection scheme was evaluated under different dc feeder and bus faults. The results show that this scheme is able to accurately identify the type of fault, isolate the faulted area, and restore the system quickly while limiting the load voltage drop to its preset limit.

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DC overcurrent protection-where we stand

Cited by 50 publications

References 1 publication

Design issues and practical application challenges of DC shipboard distribuiton system protection

Design issues and practical application challenges of DC shipboard distribuiton system protection

Circuit breaker protection considerations in power converter-fed DC Systems

Event-Based Protection Scheme for a Multiterminal Hybrid DC Power System

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