Impact of Superconducting Fault Current Limiters on the Coordination Between Generator Distance Phase Backup Protection and Generator Capability Curves

Elsamahy, Mohamed; Faried, S.O.; Sidhu, T.S.

doi:10.1109/tpwrd.2011.2123923

Cited by 9 publications

(7 citation statements)

References 18 publications

(11 reference statements)

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“…The FCL is required to have no impact on the steady-state system operation (unseen to the system) and exhibit a high impedance during a fault condition to limit the short circuit current level. The two FCL models presented in [19], namely, FCL_R and FCL_L are used in the investigations conducted in this paper. The elements of the resistive-type FCL (FCL_R) model include a superconducting resistor in parallel with a regular resistor.…”

Section: Fcl Modellingmentioning

confidence: 99%

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Use of superconducting fault current limiters for mitigation of distributed generation influences in radial distribution network fuse–recloser protection systems

Wheeler

Elsamahy

Faried

2017

IET Generation, Transmission & Distribution

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Section: Fcl Modellingmentioning

confidence: 99%

“…The parallel resistance, labelled R P (or inductor), is used to protect the FCL from 'hot spots' during the transition period and avoid overvoltages [19] in the event that the FCL resistance (R FCL ) rises too rapidly as shown in Fig. 2a [19]. Likewise in an inductive FCL (FCL_L): two coils are connected in parallel.…”

Section: Fcl Modellingmentioning

confidence: 99%

Use of superconducting fault current limiters for mitigation of distributed generation influences in radial distribution network fuse–recloser protection systems

Wheeler

Elsamahy

Faried

2017

IET Generation, Transmission & Distribution

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“…The same resistive SFCL (SFCL-R) model presented in [27], and shown in Fig. 3, is also depicted during the investigations of this paper.…”

Section: Fault Current Limiter Modelingmentioning

confidence: 99%

Reducing Microgrids Integration Complexity in Distribution Networks Considering Bidirectional Power Flow in SFCLs

Elsamahy

2022

IEEE Access

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In this paper, investigations are carried out to explore the application of the well-known unique bidirectional power flow nature of superconducting fault current limiters (SFCLs) to reduce the complexities of integrating microgrids into distribution networks. More specifically, their adverse impact on the coordination of existing protection of distribution networks, as well as the complexity of setting their internal protection to handle the change in fault current due different modes of operation. In this context, the capability of the proposed SFCL scheme is tested while demonstrating the tandem operation of the utility distribution network and microgrid protection systems and problems related to sensitivity and selectivity are addressed. In addition, different fault contingencies are considered, namely, faults located on the incoming main-lateral connecting the microgrid to the distribution network (where the fault is between the distribution substation protection and the microgrid) and on an adjacent main-lateral from the same main feeder (where the microgrid is located between the distribution substation protection and the fault). Moreover, other faults are located inside the microgrid on a local-line and at a local end-user. Results have shown the efficiency of the proposed SFCL scheme in reducing the short circuit contributions of both the microgrid and the utility network within the coordination limits depending on the direction of flow into the point of connection (PoC). Thus, it allowed a safe continuous integration of microgrids in distribution networks during faulted conditions, while, simultaneously permitted the microgrid to utilize a single protection setting to handle the changes in short circuit current levels when transitioning between gridconnected and islanded modes of operation. The time-domain simulation studies are conducted using PSCAD/EMTDC software.

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“…This positive impact motivated researchers to extend the application of SFCL with renewable energy sources, where other benefits could be obtained [10][11][12]. On the other hand, the negative impact of using SFCL is mainly focused on improper operation and loosing coordination of protective devices [13,14]. This negative impact could be mitigated through several studies [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of fault resistance on the behavior of superconducting fault current limiter in power systems

Mansour

2014

2014 IEEE International Conference on Power and Energy (PECon)

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Current limiting behavior of a superconducting fault current limiter (SFCL) depends on the prospective fault current, which in turn depends on fault resistance. Accordingly, this paper introduces a comprehensive study on the effect of fault resistance on the behavior of SFCL in power systems. A model for the system under study and SFCL is developed using PSCAD/EMTDC software. The fault resistance is changed from a very small value (0.5 Ω) to a large value (25 Ω). At each fault resistance, the line currents are obtained with and without using SFCL. It is shown that SFCL effectively reduces prospective fault currents, even at small fault resistances and high fault currents. Furthermore, the percentage limitation is determined as a function of fault resistance. It is demonstrated that SFCL behaves as an adaptive scheme, where its percentage limitation becomes higher at high fault currents. Finally, the current limiting burden of SFCL is evaluated at different fault resistances through the voltage across the SFCL.

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Impact of Superconducting Fault Current Limiters on the Coordination Between Generator Distance Phase Backup Protection and Generator Capability Curves

Cited by 9 publications

References 18 publications

Use of superconducting fault current limiters for mitigation of distributed generation influences in radial distribution network fuse–recloser protection systems

Use of superconducting fault current limiters for mitigation of distributed generation influences in radial distribution network fuse–recloser protection systems

Reducing Microgrids Integration Complexity in Distribution Networks Considering Bidirectional Power Flow in SFCLs

Effect of fault resistance on the behavior of superconducting fault current limiter in power systems

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