Mathematical morphology-based local fault detection in DC Microgrid clusters

Bayati, Navid; Baghaee, Hamid Reza; Hajizadeh, Amin; Soltani, Mohsen; Lin, Zhengyu

doi:10.1016/j.epsr.2020.106981

Cited by 28 publications

(15 citation statements)

References 38 publications

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“…Moreover, the extraction of LIF and HIF detection is the quality of having a superior by implementing MM technique, deploying a regional-maxima based fault detection consequently upgrade the fault detection level of efficacy. Therefore, MM methods were applied for the detection of both HIF and LIF in DC MGs [123]. This study overviews a MM filters-based fault detection feature before damaging the freewheeling diodes of the PEC during the fault without requiring any communication links.…”

Section: ) Mathematical Morphology Based Methodsmentioning

confidence: 99%

Fault Management in DC Microgrids: A Review of Challenges, Countermeasures, and Future Research Trends

Ali

Terriche

Hoang³

et al. 2021

IEEE Access

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The significant benefits of DC microgrids have instigated extensive efforts to be an alternative network as compared to conventional AC power networks. Although their deployment is ever-growing, multiple challenges still occurred for the protection of DC microgrids to efficiently design, control, and operate the system for the islanded mode and grid-tied mode. Therefore, there are extensive research activities underway to tackle these issues. The challenge arises from the sudden exponential increase in DC fault current, which must be extinguished in the absence of the naturally occurring zero crossings, potentially leading to sustained arcs. This paper presents cut-age and state-of-the-art issues concerning the fault management of DC microgrids. It provides an account of research in areas related to fault management of DC microgrids, including fault detection, location, identification, isolation, and reconfiguration. In each area, a comprehensive review has been carried out to identify the fault management of DC microgrids. Finally, future trends and challenges regarding fault management in DC-microgrids are also discussed.

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Section: ) Mathematical Morphology Based Methodsmentioning

confidence: 99%

Fault Management in DC Microgrids: A Review of Challenges, Countermeasures, and Future Research Trends

Ali

Terriche

Hoang³

et al. 2021

IEEE Access

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“…The model of high impedance faults in DC systems has been considered rarely. The model in [1] is utilized in this paper to accurately analyze the performance of high impedance faults, as follows 7) is used in laboratory observations [1], and the constant value of k can be calculated by experimental tests for different situations.…”

Section: B High-impedance Fault Characteristics In DC Microgridsmentioning

confidence: 99%

“…C microgrids are an energy-efficient solution for the applications where the majority of electronic loads consuming DC power and DC sources like batteries, fuel cells, and PV array supply the system [1]. DC microgrids reduce the number of conversion stages compared to AC systems, and therefore reduce power losses [1].…”

mentioning

confidence: 99%

Local Fault Location in Meshed DC Microgrids Based On Parameter Estimation Technique

Bayati

Baghaee

Hajizadeh

et al. 2022

IEEE Systems Journal

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Accurate locating of the faulty section is desired in DC microgrid due to the presence of power electronic converters and low-impedance cables. Some of the existing schemes consider power sources at only one end of the line; thus, assume that the fault current is injected from only one end of the line. This assumption is not true in the case of meshed DC microgrids, where fault current would be supplied from both ends. Moreover, existing communication-based methods require either a fast communication network or data synchronization. To address the aforementioned issues, this paper proposes a novel local fault location scheme for meshed DC microgrids. Low-and highimpedance faults are located by measuring the current by localized intelligent electronic device (LIED). Based on the parameter estimation approach, the fault location is estimated by sampling the peak values of the fault current. The effectiveness of the proposed strategy is evaluated based on offline digital timedomain simulations in MATLAB/Simulink software environment for a meshed test microgrid system and experimentally verified by implementing in a laboratory-scale hardware setup. Comparing the proposed method with other existing methods proves the effectiveness of the proposed technique for different types of faults.

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“…ia is the current from the AC side, A0 and An are the DC component and n th harmonic of the current of the arm, and k is a positive integer. The harmonic orders in ipa higher than A0 and A1 are assumed to be zero, and by applying Kirchhoff's voltage law to Figure 2, the following equation can be obtained (7) where, uac is the voltage of the AC side, and U is the magnitude of this voltage, Lac is the inductance of the AC line, and β is the angular displacement of the harmonics in the upper and lower arm currents. Therefore, by comparing Equations ( 6) and ( 7), the An = 0 for n = 2, 3, 4.…”

Section: Fault Analysis Of Ac/dc Convertermentioning

confidence: 99%

“…As a solution for better power support, the DC MG clusters are designed with the help of bidirectional interlink DC/DC converters [7]. One or several DC MGs can be connected to the AC grid by bidirectional interlink AC/DC converters.…”

Section: Introductionmentioning

confidence: 99%

DC Fault Current Analyzing, Limiting, and Clearing in DC Microgrid Clusters

et al. 2021

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A new DC fault current limiter (FCL)-based circuit breaker (CB) for DC microgrid (MG) clusters is proposed in this paper. The analytical expressions of the DC fault current of a bidirectional interlink DC/DC converter in the interconnection line of two nearby DC MGs are analyzed in detail. Meanwhile, a DC fault clearing solution (based on using a DC FCL in series with a DC circuit breaker) is proposed. This structure offers low complexity, cost, and power losses. To assess the performance of the proposed method, time-domain simulation studies are carried out on a test DC MG cluster in a MATLAB/Simulink environment. The results of the proposed analytical expressions are compared with simulation results. The obtained results verify the analytical expression of the fault current and prove the effectiveness of the proposed DC fault current limiting and clearing strategy.

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Mathematical morphology-based local fault detection in DC Microgrid clusters

Cited by 28 publications

References 38 publications

Fault Management in DC Microgrids: A Review of Challenges, Countermeasures, and Future Research Trends

Fault Management in DC Microgrids: A Review of Challenges, Countermeasures, and Future Research Trends

Local Fault Location in Meshed DC Microgrids Based On Parameter Estimation Technique

DC Fault Current Analyzing, Limiting, and Clearing in DC Microgrid Clusters

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