ENSYSTROB&amp;#x2014;Resistive Fault Current Limiter Based on Coated Conductors for Medium Voltage Application

Elschner, S.; Kudymow, A.; Fink, S.; Goldacker, W.; Grilli, Francesco; Schacherer, Christian; Hobl, A.; Böck, J.; Noë, M.

doi:10.1109/tasc.2010.2100799

Cited by 50 publications

(13 citation statements)

References 13 publications

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“…Recently, a number of practical superconducting fault current limiter (SFCL) devices have been successfully developed and demonstrated by in-grid tests. The current motivation on the applied superconductivity technology to build SFCL devices has been moving from the 10-kV distribution level [26,27] to the 100-kV transmission level [27,28].So far, fault current limiters have been comprehensively studied and applied in AC power grids to limit fault currents and to improve the dynamic performance of the system. However, the application of FCLs in VSC-HVDC systems has not been fully investigated [29].…”

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confidence: 99%

Fault Ride-through Capability Enhancement of Voltage Source Converter-High Voltage Direct Current Systems with Bridge Type Fault Current Limiters

Alam

Abido

2017

Energies

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This paper proposes the use of bridge type fault current limiters (BFCLs) as a potential solution to reduce the impact of fault disturbance on voltage source converter-based high voltage DC (VSC-HVDC) systems. Since VSC-HVDC systems are vulnerable to faults, it is essential to enhance the fault ride-through (FRT) capability with auxiliary control devices like BFCLs. BFCL controllers have been developed to limit the fault current during the inception of system disturbances. Real and reactive power controllers for the VSC-HVDC have been developed based on current control mode. DC link voltage control has been achieved by a feedback mechanism such that net power exchange with DC link capacitor is zero. A grid-connected VSC-HVDC system and a wind farm integrated VSC-HVDC system along with the proposed BFCL and associated controllers have been implemented in a real time digital simulator (RTDS). Symmetrical three phase as well as different types of unsymmetrical faults have been applied in the systems in order to show the effectiveness of the proposed BFCL solution. DC link voltage fluctuation, machine speed and active power oscillation have been greatly suppressed with the proposed BFCL. Another significant feature of this work is that the performance of the proposed BFCL in VSC-HVDC systems is compared to that of series dynamic braking resistor (SDBR). Comparative results show that the proposed BFCL is superior over SDBR in limiting fault current as well as improving system fault ride through (FRT) capability.Moreover, VSC-HVDC offers a solution for many problems faced nowadays by power networks such as network congestion, grid reinforcement, multi-terminal DC (MTDC) operation and asynchronous operations of two different grids [10]. Different types of VSC topologies are proposed in the literature [11,12] including two level, three level and multilevel converters for HVDC transmission. Multilevel means more than two voltage levels can be achieved in one phase leg, which reduces the switching times of valve and makes the voltage wave form closer to a sinusoidal curve. Line to neutral voltage waveforms of both two-level and three-level converters with PWM are discussed and compared in [12].However, despite the numerous advantages, VSC-HVDC systems face difficulties in dealing with different grid faults [13]. Fault ride-through (FRT) capability enhancement is one of the main requirements for wind farm-integrated VSC-HVDC systems [14,15]. During system faults, bulk power interruptions must be avoided by keeping the HVDC system energized, otherwise, the system may face serious instability due to this bulk power interruption. Modular multilevel converter-based VSC-HVDC system topologies can provide enhanced fault ride-through capability [16]. In [17,18] FRT capability as well as transient stability improvement have been reported by applying various VSC control techniques. A power synchronization control technique has been proposed in [19] with coordination between wind turbines and HVDC controllers in order to achieve FRT ...

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Fault Ride-through Capability Enhancement of Voltage Source Converter-High Voltage Direct Current Systems with Bridge Type Fault Current Limiters

Alam

Abido

2017

Energies

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“…1(a)], similar to the ENSYSTROB components described in [6], consisting of two anti-parallel shunted HTS coils with four paths of twin 2G tapes [SF12100, Fig. 2(a)].…”

Section: Studied Sfcls Devicesmentioning

confidence: 99%

Simulations of Resistive and Air Coil SFCLs in a Power Grid

Sousa

Polasek²,

Assis

et al. 2015

IEEE Trans. Appl. Supercond.

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The main objective of this work is to simulate the behavior of superconducting fault current limiters (SFCLs) in the electric power grid. We investigate the transient behavior of SFCL devices when subjected to a fault current in a simple network. The simulated devices are a resistive SFCL and an air coil SFCL, both equipped with 2G HTS conductors. Simulations are performed in EMTP-ATP by means of a thermal-electrical analogy model. The limiting performance, voltages at buses, resistance, and the temperature rise of both devices are obtained. The results suggest that both SFCLs are able to protect the proposed network. Index Terms-ATP-EMTP, bus-tie, power grid, superconducting fault current limiter, transient simulations, YBCO 2G tapes.

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“…Different types of SFCLs have been developed until now [10][11][12][13]. Many models for SFCL have been designed as resistor-type, reactor-type, and transformer-type etc.…”

Section: Basics Of Sfclmentioning

confidence: 99%

Enhancement of power system capacity with existing switchgear using superconducting fault current limiter

Biswas

Khan

2013

2013 International Conference on Informatics, Electronics and Vision (ICIEV)

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Superconducting fault current limiter is an attractive electronic device to solve the problem of very high fault current in the power system. In this paper, the performance of enhanced system capacity with existing switchgear by superconducting fault current limiter is studied. At first, a resistive type SFCL is modeled in Simulink. A three phase system with a nominal capacity is designed and then it is replaced by higher capacity keeping switchgear unchanged. Finally, the SFCL is introduced in the higher capacity system. Fault current in this system is limited by SFCL to the level of the presented switchgear. Thus, it is revealed that the outstanding current limiting performance of SFCL can be used to limit the fault to the level of the existing switchgear if the system capacity is improved.

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ENSYSTROB—Resistive Fault Current Limiter Based on Coated Conductors for Medium Voltage Application

Cited by 50 publications

References 13 publications

Fault Ride-through Capability Enhancement of Voltage Source Converter-High Voltage Direct Current Systems with Bridge Type Fault Current Limiters

Fault Ride-through Capability Enhancement of Voltage Source Converter-High Voltage Direct Current Systems with Bridge Type Fault Current Limiters

Simulations of Resistive and Air Coil SFCLs in a Power Grid

Enhancement of power system capacity with existing switchgear using superconducting fault current limiter

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