Protection techniques for DC microgrid- A review

Chandra, Ankan; Singh, Girish Kumar; Pant, Vinay

doi:10.1016/j.epsr.2020.106439

Cited by 100 publications

(46 citation statements)

References 102 publications

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“…The state of the art in this field is reviewed in this article, and a complete analysis of the main related communication technologies and optimization techniques is presented Zhang et al 67 Analysis, identification, and separation of faults along for DC microgrids are provided. Also, the coordinated strategy of control and protection of the DC microgrids is explained Chandra et al 68 Changes in the DC microgrid architecture affect existing protection schemes. In the short term, the rapid increase in fault current is a barrier to microgrid protection.…”

Section: Microgrid Technologiesmentioning

confidence: 99%

A brief review on microgrids: Operation, applications, modeling, and control

Shahgholian

2021

Int Trans Electr Energ Syst

144

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Microgrid is an important and necessary component of smart grid development. It is a small-scale power system with distributed energy resources. To realize the distributed generation potential, adopting a system where the associated loads and generation are considered as a subsystem or a microgrid is essential. In this article, a literature review is made on microgrid technology.The studies run on microgrid are classified in the two topics of feasibility and economic studies and control and optimization. The applications and types of microgrid are introduced first, and next, the objective of microgrid control is explained. Microgrid control is of the coordinated control and local control categories. The small signal stability and methods in improving it are discussed.The load frequency control in microgrids is assessed.

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Section: Microgrid Technologiesmentioning

confidence: 99%

A brief review on microgrids: Operation, applications, modeling, and control

Shahgholian

2021

Int Trans Electr Energ Syst

144

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“…In order to tackle this issue, the interconnected configurations are formed, including more than one interface between the MG and the main power supply, which renders them by far more reliable in terms of fault management than all of the topologies previously described. Obviously, the increased flexibility they possess is reflected in the cost of increased complexity [20]. Although there are many ways to implement more than one connection between the MG and the main power supply, the most popular is the zonal configuration, presented in Figure 8.…”

Section: Interconnectedmentioning

confidence: 99%

“…There is a growing need for new standard developments, including all aspects of DC MGs, such as standards on voltage levels, grounding, safety, specialized standards regarding each application, etc. [20,79]. This need poses a great challenge that should be properly addressed for the wider adoption of DC MGs by the worldwide market.…”

Section: Future Trends and Challengesmentioning

confidence: 99%

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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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“…The FC rate of change is dedicated from each line after sampling and using an anti-aliasing filter to eliminate the noise and undesirable signals. current can be calculated using first and second-order derivative techniques as following [4], [52];…”

Section: Proposed Protection Strategy For Mt-hvdc Transmission Gridsmentioning

confidence: 99%

IoT Technology-Based Protection Scheme for MT-HVDC Transmission Grids With Restoration Algorithm Using Support Vector Machine

et al. 2021

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This paper proposes a protection scheme for multi-terminal high voltage direct current (MT-HVDC) transmission grids. The proposed scheme is based on three protection levels; di/dt overcurrent protection as the main protection, dv/dt undervoltage protection as a backup one protection. If the main and backup one fails to detect and clear the fault current, then the fault tripping and clearing is accomplished using the overcurrent protection by AC circuit breakers (ACCBs) in the AC grid side after a coordinated time. The tripping in the main and backup one protection levels are based on using fault isolation devices (FIDs) tripping. Support vector machine (SVM) is proposed for the fault detection and discrimination in the MT-HVDC using the backup two protection system. The Internet of things (IoT) has been used for monitoring and coordination between the AC grid and MT-HVDC grid. The proposed protection scheme is applied and verified on the MT-HVDC network under different transmission system faults using the MATLAB/Simulink ® environment. The results show that the proposed scheme's effectiveness as a fast and reliable scheme in fault detection and discrimination for the MT-HVDC grids.

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Protection techniques for DC microgrid- A review

Cited by 100 publications

References 102 publications

A brief review on microgrids: Operation, applications, modeling, and control

A brief review on microgrids: Operation, applications, modeling, and control

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

IoT Technology-Based Protection Scheme for MT-HVDC Transmission Grids With Restoration Algorithm Using Support Vector Machine

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