Local Measurements-Based Backup Protection for DC Microgrids Using Sequential Analyzing Technique

Meghwani, Anju; Gokaraju, Ramakrishna; Srivastava, Suresh C.; Chakrabarti, Saikat

doi:10.1109/jsyst.2019.2919144

Cited by 40 publications

(9 citation statements)

References 27 publications

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“…The protection of DC systems is widely studied in recent research works, and the suggested methods can be categorized as fault detection, [5]- [7], and fault location schemes [8]- [10].…”

Section: A Related Workmentioning

confidence: 99%

“…To improve the reliability of protection systems, in [7], a backup protection system is suggested and uses a sequential analyzing technique. On the other hand, the fault location techniques in recent studies use an additional fault location module [8], the slope of fault current [9], and the Pearson correlation coefficient [10].…”

Section: Local Fault Location In Meshed DC Microgrids Based On Parameter Estimation Techniquementioning

confidence: 99%

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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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“…The protection of DC systems is widely studied in recent research works, and the suggested methods can be categorized as fault detection, [5]- [7], and fault location schemes [8]- [10].…”

Section: A Related Workmentioning

confidence: 99%

Section: Local Fault Location In Meshed DC Microgrids Based On Parameter Estimation Techniquementioning

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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show abstract

“…The ring configuration appears in a number of studies over the past few years. For example, the authors of [41][42][43] have studied protection schemes, fault detection and reconfiguration on DC MGs with ring configuration, especially due to their capability for advanced fault management.…”

Section: Ringmentioning

confidence: 99%

State of the Art of Low and Medium Voltage Direct Current (DC) Microgrids

et al. 2021

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Direct current (DC) microgrids (MG) constitute a research field that has gained great attention over the past few years, challenging the well-established dominance of their alternating current (AC) counterparts in Low Voltage (LV) (up to 1.5 kV) as well as Medium Voltage (MV) applications (up to 50 kV). The main reasons behind this change are: (i) the ascending amalgamation of Renewable Energy Sources (RES) and Battery Energy Storage Systems (BESS), which predominantly supply DC power to the energy mix that meets electrical power demand and (ii) the ascending use of electronic loads and other DC-powered devices by the end-users. In this sense, DC distribution provides a more efficient interface between the majority of Distributed Energy Resources (DER) and part of the total load of a MG. The early adopters of DC MGs include mostly buildings with high RES production, ships, data centers, electric vehicle (EV) charging stations and traction systems. However, the lack of expertise and the insufficient standards’ framework inhibit their wider spread. This review paper presents the state of the art of LV and MV DC MGs in terms of advantages/disadvantages over their AC counterparts, their interface with the AC main grid, topologies, control, applications, ancillary services and standardization issues. Overall, the aim of this review is to highlight the possibilities provided by DC MG architectures as well as the necessity for a solid/inclusive regulatory framework, which is their main weakness.

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“…If the value of impedance falls into the operation zone, the fault will be detected. In [24], the local measurement-based method was utilized to protect the DC microgrids as well. The integral and derivative of current values are used to detect the fault.…”

Section: Introductionmentioning

confidence: 99%

Differential Evolution-Based Overcurrent Protection for DC Microgrids

Zhang

et al. 2021

Energies

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DC microgrids have advantages over AC microgrids in terms of system efficiency, cost, and system size. However, a well-designed overcurrent protection approach for DC microgrids remains a challenge. Recognizing this, this paper presents a novel differential evolution (DE) based protection framework for DC microgrids. First, a simplified DC microgrid model is adopted to provide the analytical basis of the DE algorithm. The simplified model does not sacrifice performance criterion in steady-state simulation, which is verified through extensive simulation studies. A DE-based novel overcurrent protection scheme is then proposed to protect the DC microgrid. This DE method provides an innovative way to calculate the maximum line current, which can be used for the overcurrent protection threshold setting and the relay coordination time setting. The detailed load condition and solar irradiance for each bus can be obtained by proposed DE-based method. Finally, extensive case studies involving faults at different locations are performed to validate the proposed strategy’s effectiveness. The expandability of the proposed DE-based overcurrent protection framework has been confirmed by further case studies in seven bus mesh systems.

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Local Measurements-Based Backup Protection for DC Microgrids Using Sequential Analyzing Technique

Cited by 40 publications

References 27 publications

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

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

State of the Art of Low and Medium Voltage Direct Current (DC) Microgrids

Differential Evolution-Based Overcurrent Protection for DC Microgrids

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