Performance Evaluation of a Modified Bidirectional Z-Source Breaker

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

doi:10.1109/tie.2020.3000133

Cited by 15 publications

(4 citation statements)

References 12 publications

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“…After calculation, it is found that the change of E 1 in (11) exceeds 5 kV/mm on the basis of the normal value E 2 , and the value of d/λe (Ui/λE 1 ) is small and can be negligible. Then, I 1 /I 2 < 0.69 in (11) is obtained. Therefore, when the breakdown current ratio is less than 0.69 or greater than 1.45, it means that the contact spacing change exceeds 10 mm or the breakdown field strength deviation exceeds 5 kV/mm.…”

Section: Detection Principle and The Criterionmentioning

confidence: 98%

“…The current research on the online detection of AC circuit breaker operating states mainly focuses on detecting contact wear and mechanical transmission mechanism abnormalities [10,11]. Detecting contact wear involves extracting characteristic quantities that characterize the degree of wear, such as arc energy, dynamic contact resistance, contact thickness, and mass loss.…”

Section: Introductionmentioning

confidence: 99%

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Early Detection of Health Condition Degradation of Circuit Breaker Based on Electrical Quantity Monitoring

Liu¹,

Wang

Yang³

et al. 2023

Energies

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Circuit breakers on the filter bank branches in converter stations are vulnerable to contact wear and mechanical deterioration caused by frequent operations, which can lead to circuit breaker breakdowns and explosions. It is imperative to conduct research on the early detection of abnormal states in circuit breakers. Existing electrical quantity-based detection methods are constrained by a priori assumptions, and their measurement methods are susceptible to interference, leading to misjudgments. To address this issue, this paper examines the influence of changes in critical breakdown field strength and contact spacing on circuit breaker operation states. It also proposes a technical scheme that employs breakdown current values to comprehensively characterize circuit breaker operation states, replacing the use of critical breakdown field strength and contact spacing. An early detection method for abnormal circuit breaker states based on a sequence of breakdown current ratios at different times is proposed, and its effectiveness is verified through simulation and field recording data.

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Section: Detection Principle and The Criterionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Early Detection of Health Condition Degradation of Circuit Breaker Based on Electrical Quantity Monitoring

Liu¹,

Wang

Yang³

et al. 2023

Energies

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“…3(b). A further reduction was achieved in [27], but the topology is constrained to have equal value of inductors to maintain bidirectional symmetricity.…”

Section: Review Of Bidirectional Zsb Topologiesmentioning

confidence: 99%

Coupled-Inductor-Based Bidirectional Z-Source Breaker for DC System Protection

Marwaha

Satpathi

Pou

et al. 2020

IECON 2020 the 46th Annual Conference of the IEEE Industrial Electronics Society

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A coupled-inductor-based bidirectional Z-source breaker topology is introduced in this paper, which has the ability to detect and isolate the faulty section of the dc power system. Compared to existing topologies, the proposed topology utilizes a lower number of components and the coupled inductors reduce the footprint of the breaker. Analytical design equations are derived for the sizing of inductors and capacitor. Fault condition is analyzed to compute the essential criteria for the breaker to operate. Operation under step load and fault conditions are validated by simulation in both SPICE and MATLAB/Simulink environment.

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“…QZSCB [18] has extended isolation time (5000 μs) and the presence of a substantial reflected source current. The voltage and current stress are 1.2 V and 3.94A and the surge due to the fault is 22 A. Savaliya et al [19] proposed and analyzed the performance of the breaker under step load conditions, demonstrating its robustness by remaining impervious to inadvertent triggering even under load step changes (up to five times).…”

Section: Introductionmentioning

confidence: 99%

Design and Validation of efficient Z source breaker with voltage stress reduction for DC Microgrid

S.,

2024

Scientia Iranica

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The integration of renewable energy generation in grid results in reduced carbon emissions in the atmosphere. Despite technical advancements, critical issues oriented to protection strategies for renewable integration in microgrid structures still remain unresolved. Foremost aspects that need to be concentrated while securing the grid includes rapid fault interruption, auto reclosing prohibition and stress on the switching devices. This paper improves the fault isolation speed and voltage stress reduction by redesigning the inductance and capacitance value of Z-source DC circuit breaker. This strategical breaker is applied and tested for various types of faults in a 7bus microgrid system, where its efficacy in interrupting the fault in existing with proposed proves less voltage stress and fast fault interruption. In addition, the proposed LC tuned breaker is tested with adaptive algorithm for auto tripping and fast reclosing in smart microgrid environment. The experimentation of the suggested work is carried out in Opal RT control hardware in loop (CHIL) testing.

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Performance Evaluation of a Modified Bidirectional Z-Source Breaker

Cited by 15 publications

References 12 publications

Early Detection of Health Condition Degradation of Circuit Breaker Based on Electrical Quantity Monitoring

Early Detection of Health Condition Degradation of Circuit Breaker Based on Electrical Quantity Monitoring

Coupled-Inductor-Based Bidirectional Z-Source Breaker for DC System Protection

Design and Validation of efficient Z source breaker with voltage stress reduction for DC Microgrid

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