Protection Strategies for AC and DC Microgrid – A Review of Protection Methods Adopted in Recent Decade

Fathima, S. Zeenath; Premalatha, L.

doi:10.1080/03772063.2021.1990140

Cited by 10 publications

(2 citation statements)

References 110 publications

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“…However, protection remains an essential concern in the development 2 of DC microgrid systems due to the following factors [2]. Due to the fact that the DC system has a lower impedance than the AC system [3], when a short-circuit fault occurs, it penetrates the system more swiftly and deeply [4]. The development of an electromechanical circuit breaker with a fast-acting switch which takes advantage of rapid response time but is inefficient for highly sensitive loads.…”

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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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 combination of MCB and SSCB leads to the development of a hybrid circuit breaker (HCB), which performs efficiently in fault interruption and removes the dissipated fault current. Still, the response time depends on the ultra-fast switch [8].…”

Section: Introductionmentioning

confidence: 99%

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

Abdullah,

Sumathi

2023

IEEE Access

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In the advent of recent developments in a higher efficiency Direct Current (DC) system, the DC microgrid proves to be a permissible future to match the load demand with distributed power generation. The distribution of the DC power system benefits more than the Alternate Current (AC) power system, and due to recent developments, many researchers focus on DC microgrid. DC microgrid system has the advantage of direct interfacing with Renewable energy sources (RES) and energy storage systems (ESS), making the system highly efficient and distinct. Since the protective devices used in AC power systems do not support DC applications, there are challenges in designing and implementing a proper protection device for DC microgrid, which includes the breaking of fault current and the rapid response in handling fault current, capability to overcome the fault and cost of implementing. Unlike traditional circuit breakers that work with a fixed voltage source, Z-Source Breakers are capable of interrupting current in systems with variable voltage sources, making it appropriate for applications involving renewable energy sources, microgrids and energy storage systems. These breakers use a unique Z-Source network to provide enhanced flexibility and reliability in managing electrical faults in modern power grids. This study intends to analyses the recent growth in the impedance-based DC circuit breaker and DC microgrid's fault characteristics.

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Coordination analysis of system reliability using NSGA-II: a comparative study

Kumar,

Prajapati

2023

Int J Syst Assur Eng Manag

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Protection Strategies for AC and DC Microgrid – A Review of Protection Methods Adopted in Recent Decade

Cited by 10 publications

References 110 publications

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

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

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

Coordination analysis of system reliability using NSGA-II: a comparative study

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