A New Reclosing and Re-breaking DC Thyristor Circuit Breaker for DC Distribution Applications

Kim, Jin‐Young; Choi, Seung-Soo; Kim, In-Dong

doi:10.6113/jpe.2017.17.1.272

Cited by 17 publications

(8 citation statements)

References 12 publications

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“…Traditional mechanical DCCBs have low loss but provide unsatisfactory protection against faults due to a high intervention time of several tens of milli-seconds and lack of natural zero crossings. Owing to their low interrupting potential, short-circuit faults do not respond to these circuit breakers [110]. In comparison, solid-state DCCBs (SSDCCBs) can exhibit a rapid intervention period at a lower current level.…”

Section: A Reclosing Based On DC Circuit Breakersmentioning

confidence: 99%

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A Comprehensive Review of Auto-Reclosing Schemes in AC, DC, and Hybrid (AC/DC) Transmission Lines

et al. 2021

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The integration of distributed generators has changed the paradigm of modern power transmission systems. To cope with energy demands, electrical networks emphasize the efficient utilization of power transmission. Thus, high-voltage DC (HVDC) and hybrid (AC/DC) transmission systems are also getting attention owing to their high efficiency in addition to the widely adopted high-voltage AC (HVAC) systems. Most faults in the bulk of transmission lines are temporary or intermittent. Auto-reclosing schemes can be used to prevent these faults. However, conventional auto-reclosing schemes based on constant dead time cannot recognize the fault nature within the assigned duration. Consequently, the accuracy of power grids can be compromised. Therefore, adaptive auto-reclosing schemes are convenient for overcoming the issues caused by the rapid restoration of faulty power lines. This can enhance system reliability and avoid power failures and blackouts. This study is based on a systematic, detailed, and thorough research review of the existing auto-reclosing schemes in all three power transmission lines, i.e., AC, DC, and hybrid (AC/DC). Subsequently, a critical analysis has been performed to assess the pros and cons of each existing adaptive auto-reclosing scheme. Finally, future recommendations are presented to improve adaptive auto-reclosing schemes in each medium.

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Section: A Reclosing Based On DC Circuit Breakersmentioning

confidence: 99%

“…Mechanical CBs Mechanical DCCBs have low loss and provide unsatisfactory protection against faults. [110] Solid-state CBs SSDCCBs can achieve fast interruption time at a lower current level; they ensure the reliability and security of power systems but incur high costs and losses.…”

Section: Comments Referencesmentioning

confidence: 99%

A Comprehensive Review of Auto-Reclosing Schemes in AC, DC, and Hybrid (AC/DC) Transmission Lines

et al. 2021

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“…Therefore, the potential adverse impacts such as damage to power electronic devices and line insulation failure due to the using traditional reclosing schemes are eliminated. Also, a recloser switch for DC distributed systems is suggested in [21], which uses DC thyristors to provide low conduction losses and quick recloser switch.…”

Section: Introductionmentioning

confidence: 99%

A Fuse Saving Scheme for DC Microgrids With High Penetration of Renewable Energy Resources

et al. 2020

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The high penetration of renewable energy resources (RERs) increases the fault current level of direct current (DC) microgrids and causes bidirectional flow for fault current. Therefore, it may cause a miscoordination between fuses or other protection devices. The traditional coordination methods are based on shifting the operation curve of protection devices below the characteristic curve of the fuses during temporary faults to save fuses. However, in case of low variations of the system topology and low impedance faults, these methods can be used to save fuses. Also, in the case of high penetration of RERs, due to the variations of the short circuit level, the traditional methods are not effective. On the other hand, due to the lack of standards and proper protection methods in the DC microgrids, presenting a recloser switchfuse coordination scheme for DC microgrids is essential. To address these issues, this paper proposes a fuse saving method by finding the appropriate setting of fuses and the recloser switch, which is effective for DC microgrids with various types and penetration levels of RERs. The proposed protection method is localized, and without communication links, it is applicable for both digital and conventional protection devices installed in the DC microgrids. The proposed scheme formulates the fuse-recloser switch coordination challenge as a curve-fitting problem and solves this problem to obtain the settings of the digital recloser switch and fuse. The proposed strategy provides a robust setting for fuse and digital recloser switch by considering different topologies of the DC microgrids. The proposed method is applied to a DC microgrid in different scenarios. The effectiveness and robustness of the proposed method are illustrated by digital time-domain simulation studies in the MATLAB/Simulink software environment and comparisons with previously-reported protection strategies.

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“…Compared to the first type, the switching of the HVDC breaker in [11] is slower, because the thyristors must be cut off when the current decays to zero. However, during normal operation, the loss of thyristors is lower than IGBTs in the first type when the same number of devices is used in HVDC line.…”

Section: All-solid Hvdc Breakermentioning

confidence: 99%

“…In [11], another kind of all-solid HVDC breaker is developed (Figure 2(a)), whose principle is different from the topology in Figure 1. As shown in Figure 2, the thyristors are connected in series in the HVDC line.…”

Section: All-solid Hvdc Breakermentioning

confidence: 99%

Fault Handling Methods and Comparison for Different DC Breaker Topologies and MMC Topologies of the HVDC System

Jiang

Bakran

2018

Advances in Power Electronics

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The HVDC system has many significant benefits and is widely used around the world. The protection of HVDC system is always an issue, which should be solved. This paper presents the working principle of different protection schemes. The advantages and disadvantages of these protection schemes are also introduced. In order to solve the HVDC fault, two protection strategies are proposed. One design focusses on the topologies of the HVDC breaker in the HVDC line, such as all-solid HVDC breaker, resonant HVDC breaker, and hybrid HVDC breaker. The other design is from the viewpoint of converter topology, which has two types. One type generates the counter-emf in arms, such as full bridge MMC, hybrid MMC, and clamp-double MMC. The other type cuts off the current path from the AC side to the DC side, which is also introduced in this paper. Some performances of these topologies are compared, such as switching time and efficiency.

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A New Reclosing and Re-breaking DC Thyristor Circuit Breaker for DC Distribution Applications

Cited by 17 publications

References 12 publications

A Comprehensive Review of Auto-Reclosing Schemes in AC, DC, and Hybrid (AC/DC) Transmission Lines

A Comprehensive Review of Auto-Reclosing Schemes in AC, DC, and Hybrid (AC/DC) Transmission Lines

A Fuse Saving Scheme for DC Microgrids With High Penetration of Renewable Energy Resources

Fault Handling Methods and Comparison for Different DC Breaker Topologies and MMC Topologies of the HVDC System

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