Resistive DC fault current limiter

Xie, Sujuan; Qiu, Yufeng; Tianshu, Bi

doi:10.1049/joe.2017.0618

Cited by 13 publications

(3 citation statements)

References 2 publications

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“…The studies 10‐17 include the examples and different implementation aspects associated with SFCLs. Likewise, the research papers 18‐24 explain the examples, theories, mathematical models, and implementation aspects of NSFCLs. The comprehensive comparison of both SFCLs and NSFCLs is described in Reference 25.…”

Section: Introductionmentioning

confidence: 99%

High‐voltage DC circuit breaker with gradual fault‐current limitation mechanism for VSC‐HVDC applications

Aḥmad

Wang

Zhang³

2020

Int Trans Electr Energ Syst

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Summary Fault‐current limiters are generally deployed to overcome the capacity issues of high‐voltage direct current circuit breakers. This research work reports a hybrid direct current circuit breaker with an incremental fault‐current limiting circuit, in order to protect high‐voltage direct current transmission lines based on voltage source converters, against commonly appearing line‐to‐line or line‐to‐ground faults. The proposed breaker comprises of three branches: branch for the normal current flow, high inductance carrying branch for the fault‐current limitation, and branch to isolate the fault current. The normal current carrying path contains a bidirectional switch, breaker impedance, and a mechanical disconnector. Incremental fault‐current limiting circuit is placed in fault‐current limiting branch, which consists of n‐numbers of branches in a parallel configuration, and each branch is composed of a bidirectional switch and a current limiting inductor. By the application of incremental fault‐current limiting circuit, the fault current is decreased gradually; at the terminal stage the residual current is transferred to fault‐current isolation branch, which is composed of metal oxide arrester. The article further includes a detailed working principle of the proposed breaker, an analytical model for fault‐current estimation, and criteria to optimize the size of current limiting inductors in incremental fault‐current limiting circuit. The theoretical analysis is verified using equivalent circuit approach and three‐terminal voltage source converter based direct current transmission line model. PSCAD/EMTDC software is used to acquire the simulation results. The performance of the proposed breaker is equated with some of the existing topologies, for rigorous comparative analysis to gauge the competitiveness.

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Section: Introductionmentioning

confidence: 99%

High‐voltage DC circuit breaker with gradual fault‐current limitation mechanism for VSC‐HVDC applications

Aḥmad

Wang

Zhang³

2020

Int Trans Electr Energ Syst

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“…However, the application of superconducting FCLs in the dc grid needs further research, including selectivity of relay protection, rapid recovery after fault isolation and so on. Reference [19] proposed a resistive dc FCL in MMC-HVDC systems to limit the rising rate of dc fault current, which consisted of a control module and a damping module.…”

Section: Introductionmentioning

confidence: 99%

Research on Coordination and Optimal Configuration of Current Limiting Devices in HVDC Grids

et al. 2019

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This paper proposes a collaborative optimal configuration method of current limiting reactors (CLRs) and fault current limiters (FCLs) in the modular multilevel converter (MMC)-based high voltage direct current (HVDC) grids. The calculation methods of dc line fault currents and bridge arm fault currents considering the collaboration of CLRs and FCLs have high accuracy. The multi-objective optimization configuration model is established, in which the fault current limiting effect, the total inductances of CLRs and the number of FCLs are used as objective functions while the DCCBs current breaking capacity, the converter valves overcurrent protection, the boundary of the dc line protection area, the dynamic performance of the dc system and the converter station outlet dc voltage are used as constraints. In this paper, the multi-objective optimization algorithm is used to solve multi-objective optimal configuration problem for the CLRs and FCLs. Finally, the proposed method is tested with a symmetrical monopole fourterminal MMC-HVDC grid in PSCAD/EMTDC. The simulation results verify that the proposed optimal configuration method can ensure the continuous and reliable operation of the dc grid under dc faults. INDEX TERMS DC grid, modular multilevel converter, dc fault current, current limiting reactor, fault current limiter, multi-objective.

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“…Solid FCLs: solid FCLs are the most popular topologies due to its advantages of minimum power loss under normal condition, quick response, fast recovery capacity, good reliability, and low cost [52]. A resistive based solid-state FCL is proposed in [53]. The resistive based solid-state FCL consists of a current-limiting resistor module R and a control module in parallel, as shown in Figure 12.…”

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confidence: 99%

Review on Short-circuit Current Analysis and Suppression Techniques for MMC-HVDC Transmission Systems

et al. 2020

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The modular multilevel converter (MMC) has been widely adopted in high voltage direct current (HVDC) transmission systems due to its significant advantages. MMC-HVDC is developing towards multi-terminal direct current (MTDC) power grid for reliability enhancement. However, there exist a huge amplitude and a steep rise in fault current due to the low impedances of DC lines and MMCs, which threaten the security and reliability of the DC power grids. It is necessary to restrain the DC short circuit current in order to ensure the safe and stable operation of DC power grids. This paper gives a comprehensive review and evaluation of the proposed DC short-circuit current analysis and suppression techniques used in MMC-based MTDC power girds, in terms of MMC modeling, short circuit calculation, and suppression method. In addition, future trends of countermeasures to short circuit current in MMC-based MTDC power grids are also discussed.

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Resistive DC fault current limiter

Cited by 13 publications

References 2 publications

High‐voltage DC circuit breaker with gradual fault‐current limitation mechanism for VSC‐HVDC applications

High‐voltage DC circuit breaker with gradual fault‐current limitation mechanism for VSC‐HVDC applications

Research on Coordination and Optimal Configuration of Current Limiting Devices in HVDC Grids

Review on Short-circuit Current Analysis and Suppression Techniques for MMC-HVDC Transmission Systems

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