Implications of fault current limitation for electrical distribution networks

Blair, Steven M.; Roscoe, Andrew; Booth, Campbell; Burt, Graeme; Teo, A.L.J.; Bright, Chris

doi:10.1049/cp.2010.0355

Cited by 11 publications

(19 citation statements)

References 8 publications

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“…The effects of resistive SFCLs on power system protection system have been examined, for example in [5], [17] and [21], and location A (at the bus-tie) is likely to have the lowest impact on overcurrent protection [5]; the overcurrent protection settings are the same, regardless of whether or not the bustie circuit breaker is closed. However for location D, the total prospective fault current may be substantially reduced if the bus-tie circuit breaker is open.…”

Section: Consequences Of Sfcls On Protectionmentioning

confidence: 99%

“…This is important because it will affect the length of the recovery time of a resistive SFCL [15]. Note that energy dissipation may be substantially lower if an impedance is placed in parallel with the SFCL [5] and external to the cryogenic environment, but this will also affect the current limitation properties [22]. It has been shown how, for location A, a relatively large SFCL resistance can reduce both the severity of electrical disturbances and the amount of energy dissipated in the SFCL during faults.…”

Section: Non-fault Transients and Their Potential To Cause Sfcl Mal-omentioning

confidence: 99%

“…The preference for use of low voltage marine electrical systems is driven by the costs of increased insulation associated with higher voltages, employing crew with particular operating qualifications and increasingly stringent safety regulations. Restriction of fault currents by a means that does not add operational constraints during non-fault conditions is therefore very attractive [3], [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…Resistive SFCLs operate on the principle that passing a current, which is greater than the superconductor's critical current, I c , through a superconducting wire causes a small amount of ohmic heating and, when the wire temperature increases sufficiently, results in the superconductor "quenching", and transitioning to a resistive state [1], [4], [5]. Hence, there are virtually no losses in the SFCL during normal operation (ignoring power losses associated with the operation of the cryogenic system), yet an SFCL intrinsically inserts impedance into the fault current path during a fault, as long as its transition threshold conditions are satisfied.…”

Section: Introductionmentioning

confidence: 99%

“…SFCLs are not restricted to a single current limiting operation, but usually require a recovery period after operation, ranging from several seconds [6] to several minutes [4], during which the element is cooled until it returns to its superconducting state. SFCLs are therefore a much more favourable solution to addressing high fault levels than traditional solutions such as fault current limiting reactors, I s -limiters and reduced electrical network interconnection [5], all of which have a number of operational and safety-related disadvantages [4], [5]. Several types of SFCL have been proposed, some of which do not require recovery [4], but for simplicity this paper focuses on the application of resistive SFCLs.…”

Section: Introductionmentioning

confidence: 99%

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Superconducting fault current limiter application in a power-dense marine electrical system

Blair

Booth

Elders

et al. 2011

IET Electr. Syst. Transp.

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This version is available at https://strathprints.strath.ac.uk/40245/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output.This paper is a preprint of a paper accepted by IET Electrical Systems in Transportation and is subject to Institution of Engineering and Technology Copyright. When the final version is published, the copy of record will be available at IET Digital Library. AbstractPower-dense, low-voltage marine electrical systems have the potential for extremely high fault currents. Superconducting fault current limiters (SFCLs) have been of interest for many years and offer an effective method for reducing fault currents. This is very attractive in a marine vessel in terms of the benefits arising from reductions in switchgear rating (and consequently size, weight and cost) and damage at the point of fault. However, there are a number of issues that must be considered prior to installation of any SFCL device(s), particularly in the context of marine applications. Accordingly, this paper analyses several such issues, including: location and resistance sizing of SFCLs; the potential effects of an SFCL on system voltage, power and frequency; and practical application issues such as the potential impact of transients such as transformer inrush. Simulations based upon an actual vessel are used to illustrate discussions and support assertions. It is shown that SFCLs, even with relatively small impedances, are highly effective at reducing prospective fault currents; the impact that higher resistance values has on fault current reduction and maintaining the system voltage for 1 Dr Nand Singh is now with Mott MacDonald Ltd., Croydon, CR0 2EE, U.K 2 other non-faulted elements of the system is also presented and it is shown that higher resistance values are desirable in many cases. It is demonstrated that the exact nature of the SFCL application will depend significantly on the vessel's electrical topology, the fault current contributio...

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Section: Consequences Of Sfcls On Protectionmentioning

confidence: 99%

Section: Non-fault Transients and Their Potential To Cause Sfcl Mal-omentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Superconducting fault current limiter application in a power-dense marine electrical system

Blair

Booth

Elders

et al. 2011

IET Electr. Syst. Transp.

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Retraction notice to “Analysis of resistive SFCL in a test-bed microgrid” [Ain Shams Eng. J. 6 (2015) 883–892]

Khuntia

Samantaray

2018

Ain Shams Engineering Journal

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Fault current levels in electrical systems are rising due to natural growth in demand, the increasing presence of distributed generation (DG), and increased network interconnection. This rising trend is expected to continue in the future.Marine vessel power systems are highly power-dense and are often safety-critical.Power system protection is increasingly challenging in these systems. Superconducting fault current limiters (SFCLs) offer an attractive solution to many of the issues faced.This thesis establishes and reviews the state of the art in resistive SFCL technology and application knowledge, and provides crucial research-based guidance for the adoption of resistive SFCLs in future power systems.The issues associated with the application of resistive SFCLs-including location, resistance rating, the recovery period, and interaction with protection systems-are demonstrated. The relationship between several resistive SFCL design parameters is established using a generic analytical approach, hence providing a framework for validating SFCL designs. In particular, it is shown that a particular SFCL resistance rating leads to a peak in the superconductor energy dissipation, which generally should be avoided.It is proven that resistive SFCLs have an inverse current-time characteristic, i.e., they will operate in a time that inversely depends upon the initial fault current magnitude. This knowledge is critical for underpinning the operation of a novel protection scheme using multiple resistive SFCLs. The scheme offers several advantages: very fast-acting operation in response to faults anywhere on the system under study; maximum prospective fault currents are prevented from occurring, reducing the duty on circuit breakers; inherent, fast-acting backup; and communications is not required. It is shown that the scheme is suited to highly-interconnected systems with a high presence of DG. The scheme is readily applicable to the design of future utility and marine vessel power systems.

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Optimal restoration of directional overcurrent protection coordination for meshed distribution system integrated with DGs based on FCLs and adaptive relays

Hatata

Ebeid

El‐Saadawi

2022

Electric Power Systems Research

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Implications of fault current limitation for electrical distribution networks

Cited by 11 publications

References 8 publications

Superconducting fault current limiter application in a power-dense marine electrical system

Superconducting fault current limiter application in a power-dense marine electrical system

Retraction notice to “Analysis of resistive SFCL in a test-bed microgrid” [Ain Shams Eng. J. 6 (2015) 883–892]

Optimal restoration of directional overcurrent protection coordination for meshed distribution system integrated with DGs based on FCLs and adaptive relays

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