Analysis and Experimental Validation of Bidirectional <i>Z</i>-Source DC Circuit Breakers

Savaliya, Swati G.; Fernandes, B. G.

doi:10.1109/tie.2019.2928284

Cited by 54 publications

(16 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second limitation of the abovementioned three types of Z-source breakers is only suitable for unidirectional current conduction. Some topologies [28][29] are proposed to realize bidirectional current conduction and interruption, however, the components (SCRs, capacitors, inductors) needed are almost doubled, making the circuit a little costly, bulky and complicated.…”

Section: B Comparison and Discussionmentioning

confidence: 99%

A Review of Thyristor Based DC Solid-State Circuit Breakers

Song¹,

Cairoli²,

Du³

et al. 2021

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

Characterized by ultra-fast and arc-free fault clearing, solid state circuit breakers (SSCBs) are getting increasing popularity with the latest development of advanced power semiconductor devices, like the silicon carbide (SiC) MOSFETs. On the other hand, the mature and cost-effective thyristor technology exhibits the beneficial features of low conduction losses, high surge current capability, bidirectional voltage blocking capability, etc., making it a very attractive candidate for SSCB development. However, the conventional thyristors (silicon controlled rectifiers) have no current turn-off capability and need some auxiliary circuits (e.g. LC resonant circuit) or special topology (e.g. Z-source breakers) to be applied in SSCBs. Meanwhile, some active turn-off thyristors (like integrated gate-commutated thyristors, emitter turn-off thyristors, etc.) are specially modified to have current turn off capability, and better suitable for SSCBs. This paper reviews and studies the SSCBs based on the conventional or active turn-off thyristors. The design challenges and performance comparison of SSCBs with different thyristor technologies are also discussed.

show abstract

Section: B Comparison and Discussionmentioning

confidence: 99%

A Review of Thyristor Based DC Solid-State Circuit Breakers

Song¹,

Cairoli²,

Du³

et al. 2021

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

show abstract

“…Considering the limitations of Z-source solid-state DC CBs, the majority of the proposed topologies are applicable to the medium and low voltage DC grids [97]. In [98], analysis and experimental verification of bidirectional Z-source DC CBs are performed. The optimization and control of a Z-source DC CB with the aim of reducing the switching losses of the protection device are analyzed in [99].…”

Section: B Solid-state DC Circuit Breakersmentioning

confidence: 99%

HVDC Circuit Breakers: A Comprehensive Review

Mohammadi

Rouzbehi

Hajian

et al. 2021

IEEE Trans. Power Electron.

106

View full text Add to dashboard Cite

High Voltage Direct Current (HVDC) systems are now well-integrated into AC systems in many jurisdictions. The integration of Renewable Energy Sources (RESs) is a major focus and the role of HVDC systems is expanding. However, the protection of HVDC systems against DC faults is a challenging issue that can have negative impacts on the reliable and safe operation of power systems. Practical solutions to protect HVDC grids against DC faults without a widespread power outage include (1) using DC Circuit Breakers (CBs) to isolate the faulty DC-link, (2) using a proper converter topology to interrupt the DC fault current, and/or (3) using high power DC transformers and DC hubs at strategic points within DC grids. The application of HVDC CBs is identified as the best approach that satisfies both DC grids and connected AC grids' requirements. This paper reports a comprehensive review of HVDC CBs technologies, including recent significant attempts in the development of modern HVDC CBs. The functional analysis of each technology is presented. Additionally, different technologies based on information obtained from literature are compared. Finally, recommendations for the improvement of CBs are presented.

show abstract

“…A ZCB operates under the principle of a resonant circuit along with the automatic-turnoff feature of SCR to interrupt load-carrying currents at a zero crossing point, functioning at an extremely high speed [19]. To date, several topologies of ZCBs have been introduced in order to improve upon the first proposed ZCB topology [2,[20][21][22]. A ZCB can be specified to detect and interrupt high-impedance faults in DC networks [23,24].…”

Section: The State Of the Art Of Z-source Circuit Breakersmentioning

confidence: 99%

Assessment of Cable Length Limit for Effective Protection by Z-Source Circuit Breakers in DC Power Networks

Bhatta

Keller

et al. 2021

Electronics

View full text Add to dashboard Cite

This paper introduces groundbreaking research on how to assess the Cable Length Limit (CLL) to ensure effective protection by Z-source Circuit Breakers (ZCBs) in DC power networks. It has been revealed that the line parameters of power cables have a significant impact on the cutoff performance of ZCBs. The question of assessing the CLL has been raised as an unsolved problem. In this paper, a method of CLL assessment is proposed based on physical models and simulation tests. To verify the proposed method, two studies were performed to assess the Cable Length Limits depending on fault levels and power delivery levels, respectively. The ZCB parameters were specified for a simulation testing system for a 5 MW distribution line feeder. The effectiveness of ZCB protection was tested in groups of simulation tests with various impacting quantities, i.e., cable lengths, fault current levels, and power delivery levels. The effective cable lengths for the ZCB to detect and successfully interrupt a faulty branch in the DC network were assessed and analyzed. The testing results prove that the CLL decreases along with a decreasing fault current level, as well as an increasing power delivery level. Based on data analysis, an equation was derived to calculate the effective length of the ZCB for DC lines, and the equation can be used to generate new CLL curves for various load-power requirements. This study could increase the reliability of a ZCB’s response to a fault in DC transmission and distribution lines. It could also help power system designers/operators to maintain reliable protection with ZCBs in DC power system networks.

show abstract

Analysis and Experimental Validation of Bidirectional Z-Source DC Circuit Breakers

Cited by 54 publications

References 12 publications

A Review of Thyristor Based DC Solid-State Circuit Breakers

A Review of Thyristor Based DC Solid-State Circuit Breakers

HVDC Circuit Breakers: A Comprehensive Review

Assessment of Cable Length Limit for Effective Protection by Z-Source Circuit Breakers in DC Power Networks

Contact Info

Product

Resources

About