Study on the Current Limiting Performance of a Novel SFCL in DC Systems

Liang, Siyuan; Tang, Yuejin; Xia, Zhouhui; Ren, Li; Chen, Lei; Xu, Ying; Wang, Zuoshuai; Yan, Sinian

doi:10.1109/tasc.2017.2669180

Cited by 31 publications

(15 citation statements)

References 13 publications

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“…Energies 2019, 12, x FOR PEER REVIEW 3 of 31 In this paper, our study on a hybrid type SFCL (H-SFCL) is further developed based on previous studies of a small-scale prototype test and system simulation [44,45]. First, according to system simulation, the basic requirements and principles of the H-SFCL's parameter matching are put forward.…”

Section: H-sfclmentioning

confidence: 99%

Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems

et al. 2019

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Voltage source converter-based (VSC-based) DC systems play an important role in connecting large-scale renewable energy and distributed energy, but they are vulnerable to DC short-circuit fault and lacks mature protection devices and appropriate protection strategies. Therefore, a hybrid type DC superconducting fault current limiter (H-SFCL) is proposed and the current limiting mechanism of the SFCL is analyzed. According to the requirements and strategies for protection, several different effective parameter matching and optimization methods of the H-SFCL are proposed by combining optimization algorithms and two short-circuit transient calculation models of VSC-based DC systems. The optimization methods proposed in this paper are compared and analyzed in terms of convergence, running time, calculation range and stability of optimization results, revealing their respective calculation characteristics. Finally, the effectiveness of parameter matching and optimization methods are well validated by comparison and analysis of simulation. The proposed methods can select a good parameter matching scheme of the H-SFCL to deal with different requirements.Keywords: hybrid type DC SFCL (H-SFCL); DC circuit breaker (DCCB); voltage source converter (VSC); parameter matching; optimization IntroductionVoltage source converter (VSC)-based DC transmission technology can realize active and reactive power controlling [1] and bus voltage supporting [2], which can restrain the fluctuation and randomness of renewable energy in a large range and has potential advantages in renewable energy paralleling in the power grid [3,4]. Meanwhile with a common DC voltage and easy parallel connections, VSC-based DC transmission technology is the most appropriate for multi-terminal DC systems (MTDC) [5]. As a promising research hotspot, several VSC-based demonstration projects have been built including the conventional two or three level converter and modular multi-level converter [6][7][8][9][10]. Nevertheless, the safe, reliable and continuous operation of VSC-based DC system is the premise of exerting its own advantages. Due to the low damping of the DC system, DC short-circuit fault with high current rising rate and fast fault propagation speed is a great threat to the VSC-based DC system [11], which requires the sensitivity of fault identification and the rapidity of protective action. According to [12,13], DC short-circuit current must be interrupted within 5 ms to ensure the safety of VSC components.At present, there are three main methods to deal with DC short-circuit fault, including blocking trigger pulse of converter, opening all AC circuit breakers (ACCBs) on AC sides of the VSC system then opening DC circuit breakers (DCCBs) [13]. DC short-circuit current is difficult to be cleared because

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Section: H-sfclmentioning

confidence: 99%

Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems

et al. 2019

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“…Consequently, U l can be regarded as an independent variable in the circuit of current reduction component faithfully. Since U l is yielded, the current reduction is finally derived by combining (17) and (20), and expressed as follows:…”

Section: Derivation Of Current Reductionmentioning

confidence: 99%

“…However, considering the large amount and high unit price of DCCB, this kind of solution is not feasible in the practical project. Employing superconducting fault current limiter (SFCL) to suppress the fault current within the breaking capacity of the legacy DCCBs has drawn more attention [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Location and size determination method of SFCLs in multi‐terminal VSC‐HVDC using iterative current reduction ranking

Lan

Duan

et al. 2019

IET Renewable Power Generation

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Superconducting fault current limiter (SFCL) is a promising technology to suppress fault current in multi-terminal VSC-HVDC. However, the location and size of SFCLs determination have become a problem to be studied. This study proposes a location and size determination method of SFCLs in multi-terminal VSC-HVDC. In the proposed method, the current reduction ranking is developed to quantify the current limiting effect, and iterative process is utilised to deal with the non-linear characteristics of current reduction. With the iterative current reduction ranking, the location and size could be determined collaboratively under mathematical guidance, ensuring the optimality of current limiting effect. Fast calculation of current reduction is investigated to accelerate the determination process. Finally, the effectiveness and feasibility of the proposed method are validated in a four-terminal VSC-HVDC.

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“…Superconducting fault current limiters (SFCLs) are fundamental components of modern electrical systems at both medium and high voltages. Many research efforts have been carried out to reduce fault currents in alternating current (AC) or direct current (DC) systems [1][2][3][4][5][6][7]. Among other SFCLs, bridge type SFCL using reactors do not require quenching and can significantly reduce AC losses.…”

Section: Introductionmentioning

confidence: 99%

Magnetizing Characteristics of Bridge Type Superconducting Fault Current Limiter (SFCL) with Simultaneous Quench Using Flux-Coupling

Han

Lim

2020

Energies

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A bridge type superconducting fault current limiter (SFCL) with simultaneous quench using two high-temperature superconducting (HTSC) elements and two coils was fabricated to analyze the fault current limiting characteristics. Before and after the fault occurrence, the current limiting operation and the voltage waveforms of each device were compared according to the change of the input voltage. We also analyzed flux linkages and instantaneous powers of the bridge type SFCL with simultaneous quench using flux-coupling composed of HTSC elements with different critical currents. During the fault period, the magnetization power area and the flux linkage’s operating range variation due to the magnetizing current were compared with each other.

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Study on the Current Limiting Performance of a Novel SFCL in DC Systems

Cited by 31 publications

References 13 publications

Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems

Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems

Location and size determination method of SFCLs in multi‐terminal VSC‐HVDC using iterative current reduction ranking

Magnetizing Characteristics of Bridge Type Superconducting Fault Current Limiter (SFCL) with Simultaneous Quench Using Flux-Coupling

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