Analytical Nonlinear Reluctance Model of a Single-Phase Saturated Core Fault Current Limiter

Commins, Philip; Moscrop, Jeffrey W

doi:10.1109/tpwrd.2012.2214404

Cited by 41 publications

(18 citation statements)

References 5 publications

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“…Recently, this concept was extended to saturated core FCLs in [12], where the magnetic field of the device was represented by a magnetic circuit of lumped reluctances. A PSCAD/EMTDC model of the saturated core FCL [13], developed based on this magnetic reluctance circuit, is used to represent the FCL in this paper.…”

Section: B Modelling Saturated Core Fault Current Limitermentioning

confidence: 99%

“…1c) were obtained from flux measurements using FEA [12], [13]. Table II summarises the model parameters including the values of the leakage reluctance elements derived for this particular saturated core FCL device.…”

Section: B Fcl Model Parameter Determinationmentioning

confidence: 99%

“…Table II summarises the model parameters including the values of the leakage reluctance elements derived for this particular saturated core FCL device. A characteristic reluctance curve, developed using the methodology set out in [12], was used to estimate the core reluctances c1 and c2 . Fig.…”

Section: B Fcl Model Parameter Determinationmentioning

confidence: 99%

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Application of saturated core fault current limiters to interconnected distribution networks

Gunawardana

Perera

Moscrop

2015

2015 Australasian Universities Power Engineering Conference (AUPEC)

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There is an increasing need for electricity utilities to limit fault levels in critical locations in power systems so that existing switchgear can continue to function as expected. This is particularly true in electrical distribution systems, where the increased penetration of renewable and decentralised generation is forcing the network to be highly interconnected in order to allow for higher integration capacity and reliable operation. Consequently, the short-circuit currents in distribution systems have increased significantly. In this background, application of fault current limiting devices is one of the solutions that is being considered by the Distribution Network Service Providers (DNSPs). A saturated core Fault Current Limiter (FCL) is one such device that can be used in existing and future electrical distribution systems to reduce the fault currents to a manageable level. This paper presents the potential performance of a saturated core FCL, in an interconnected 11kV test system, utilising a new comprehensive time-domain model to represent the FCL. PSCAD/EMTDC studies and numerical fault analysis are carried out to simulate the efficacy of an FCL when placed on a busTie of a looped circuit. The effect of the bus-Tie FCL impedance on the network impedance and the subsequent fault current contributions is investigated. It is demonstrated that in a circuit with complex interconnections, suppression of fault currents need multiple FCLs in critical feeders. Abstract-There is an increasing need for electricity utilities to limit fault levels in critical locations in power systems so that existing switchgear can continue to function as expected. This is particularly true in electrical distribution systems, where the increased penetration of renewable and decentralised generation is forcing the network to be highly interconnected in order to allow for higher integration capacity and reliable operation. Consequently, the short-circuit currents in distribution systems have increased significantly. In this background, application of fault current limiting devices is one of the solutions that is being considered by the Distribution Network Service Providers (DNSPs). A saturated core Fault Current Limiter (FCL) is one such device that can be used in existing and future electrical distribution systems to reduce the fault currents to a manageable level. This paper presents the potential performance of a saturated core FCL, in an interconnected 11kV test system, utilising a new comprehensive time-domain model to represent the FCL. PSCAD/EMTDC studies and numerical fault analysis are carried out to simulate the efficacy of an FCL when placed on a bus-tie of a looped circuit. The effect of the bus-tie FCL impedance on the network impedance and the subsequent fault current contributions is investigated. It is demonstrated that in a circuit with complex interconnections, suppression of fault currents need multiple FCLs in critical feeders.

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Section: B Modelling Saturated Core Fault Current Limitermentioning

confidence: 99%

Section: B Fcl Model Parameter Determinationmentioning

confidence: 99%

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Application of saturated core fault current limiters to interconnected distribution networks

Gunawardana

Perera

Moscrop

2015

2015 Australasian Universities Power Engineering Conference (AUPEC)

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“…There are several types of FCLs [6][7][8]. The saturated-core fault-current limiter (SCFCL) has attracted worldwide attention from researchers and companies and has the advantages of fault self-detection, fast action and a high withstanding voltage [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation and Optimization of a Novel Hybrid Saturated-Core Fault-Current Limiter Considering the Leakage Effect

Wei

Chen

Liu³

et al. 2018

Energies

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Abstract:To reduce the requirement of DC-biasing capacity and improve the biasing ability of a permanent magnet (PM), a novel hybrid saturated-core fault-current limiter (HSCFCL) is proposed in this paper. Compared with traditional saturated-core fault-current limiter (SCFCL), the HSCFCL has the advantages of small size, low DC-biasing capacity, a high biasing ability of the PM and excellent limiting performance. Firstly, the principle and the magnetic circuit model of the HSCFCL are introduced. Then, the improvement of DC-biasing capacity with a PM is analyzed. In addition, the influence of the leakage-flux effect on the biasing ability of the PM is presented in detail, and a small-section optimal structure is proposed to improve the biasing ability of the PM. Finally, to validate the principle and performance of the HSCFCL, various electromagnetic simulations, optimization studies and experiments are carried out. The simulation and experimental results demonstrate the effectiveness of the proposed method.

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“…There are several different types of FCL, including the solid-state, quenching superconducting and saturated-core fault current limiters [2][3][4][5]. The FCLs can be regarded as a variableimpedance device in series with the lines to provide low steady-state impedance under normal conditions and high limiting impedance during fault conditions [6]. But in power systems, the advantages of FCLs depend on the number, location and impedance of FCLs.…”

Section: Introductionmentioning

confidence: 99%

Pareto optimal allocation of fault current limiter based on immune algorithm considering cost and mitigation effect

Chen

Wei

Zhu

et al. 2016

J. Mod. Power Syst. Clean Energy

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This paper presents a multi-objective Pareto optimal method for allocation of fault current limiters based on an immune algorithm, which takes into account two objectives of the cost and fault current mitigation effect. A sensitivity factor calculation method based on the rate of fault current mitigation is proposed to reduce the search space and improve the efficiency of the algorithm. In this approach, the objective functions related to the cost and fault current mitigation effect are established. A modified inversion operator based on equal cost is proposed to converge to global optimal solutions more effectively. The proposed algorithm is tested on the IEEE 39-bus system, and obtains the Pareto optimal solutions, from which the user can select the most suitable solutions according to the preferences and relative importance of the objective functions. Simulation results are used to verify the proposed method.

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Analytical Nonlinear Reluctance Model of a Single-Phase Saturated Core Fault Current Limiter

Cited by 41 publications

References 5 publications

Application of saturated core fault current limiters to interconnected distribution networks

Application of saturated core fault current limiters to interconnected distribution networks

Performance Investigation and Optimization of a Novel Hybrid Saturated-Core Fault-Current Limiter Considering the Leakage Effect

Pareto optimal allocation of fault current limiter based on immune algorithm considering cost and mitigation effect

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