Protection of meshed microgrids with communication overlay

Prasai, Anish; Du, Yi; Paquette, Andrew D.; Buck, Edward; Harley, R.G.; Divan, Deepak

doi:10.1109/ecce.2010.5618074

Cited by 37 publications

(18 citation statements)

References 12 publications

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“…Studies in [365][366] [367][368] discuss applications of differential protection in microgrids. In [365] a multi-level approach based on power line carrier technology is proposed to provide the most effective form of network protection of a meshed microgrid, while ensuring a high level of reliability and power quality by quickly identifying faulted points in the system, and effectively isolating them.…”

Section: A Fault Modeling and Analysismentioning

confidence: 99%

“…In [365] a multi-level approach based on power line carrier technology is proposed to provide the most effective form of network protection of a meshed microgrid, while ensuring a high level of reliability and power quality by quickly identifying faulted points in the system, and effectively isolating them. The study shows that the traditional communication-less protection schemes are not applicable in a meshed microgrid where a fault at one location is indistinguishable from another.…”

Section: A Fault Modeling and Analysismentioning

confidence: 99%

“…Due to variable microgrid operating conditions and meshed topology of microgrids, it is necessary to use communications to update protection settings [370] [365]. The study in [365] shows that the traditional communication-less protection schemes are not applicable in a meshed microgrid where a fault at one location is indistinguishable from another.…”

Section: B Communications-based Protectionmentioning

confidence: 99%

See 2 more Smart Citations

State of the Art in Research on Microgrids: A Review

et al. 2015

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The significant benefits associated with microgrids have led to vast efforts to expand their penetration in electric power systems. Although their deployment is rapidly growing, there are still many challenges to efficiently design, control, and operate microgrids when connected to the grid and also when in islanded mode, where extensive research activities are underway to tackle these issues. It is necessary to have an across-the-board view of the microgrid integration in power systems. This paper presents a review of issues concerning microgrids and provides an account of research in areas related to microgrids, including distributed generation, microgrid value propositions, applications of power electronics, economic issues, microgrid operation and control, microgrid clusters, and protection and communications issues.

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Section: A Fault Modeling and Analysismentioning

confidence: 99%

Section: A Fault Modeling and Analysismentioning

confidence: 99%

Section: B Communications-based Protectionmentioning

confidence: 99%

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State of the Art in Research on Microgrids: A Review

et al. 2015

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“…The configuration of DG is generally divided into two groups, namely mesh configuration and radial configuration [20][21][22], as shown in Figure 1. By using Thevenin equivalent circuits, the simplified models of a DC microgrid are shown in Figure 2.…”

Section: Configuration Of DC Microgridsmentioning

confidence: 99%

Enhanced Load Power Sharing Accuracy in Droop-Controlled DC Microgrids with Both Mesh and Radial Configurations

Liu

Wang

et al. 2015

Energies

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The rational power sharing among different interface converters should be determined by the converter capacity. In order to guarantee that each converter operates at the ideal condition, considering the radial and mesh configuration, a modified strategy for load power sharing accuracy enhancement in droop-controlled DC microgrid is proposed in this paper. Two compensating terms which include averaging output power control and averaging DC voltage control of neighboring converters are employed. Since only the information of the neighboring converter is used, the complexity of the communication network can be reduced. The rational distribution of load power for different line resistance conditions is realized by using modified droop control that can be regarded as a distributed approach. Low bandwidth communication is used for exchanging sampled information between different converters. The feasibility and effectiveness of the proposed method for different network configurations and line resistances under different communication delay is analyzed in detail. Simulation results derived from a DC microgrid with three converters is implemented in MATLAB/Simulink to verify the proposed approach. Experimental results from a 3 × 10 kW prototype also show the performance of the proposed modified droop control scheme.

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“…In [14], a coordinated method to manage both network protection and DG interface protection is proposed. Authors in [15] have devised a protection scheme using digital relays with communication network for the microgrid. To provide an effective network protection to a meshed microgrid, a multilevel approach is implemented in [16].…”

Section: Introductionmentioning

confidence: 99%

Protection of Distributed Generation: Challenges and Solutions

Shahzad¹,

Kahrobaee²,

Asgarpoor³

2017

EPE

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Distributed generation (DG) is the future of energy. This technology allows the bidirectional flow of power within an electrical network. Researchers are faced with many challenges to the accurate implementation of protection schemes for DG-connected distribution network. The schemes designed must satisfy the performance requirements of selectivity, reliability, and sensitivity. Most researchers opine that conventional protection schemes based on over current detection are insufficient to completely and accurately protect a DG-connected distributed power system. There are many challenges that need to be tackled before embarking upon the journey to successfully implement these schemes. This paper summarizes the major challenges which one can encounter while designing protection schemes for DG-connected distribution networks. Some possible solutions from the literature are also mentioned. Moreover, a suggested solution for protecting future active distribution networks is provided. It is expected that this paper will act as a benchmark for future researchers in this field to tackle the challenges related to the protection of active distribution networks.

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Protection of meshed microgrids with communication overlay

Cited by 37 publications

References 12 publications

State of the Art in Research on Microgrids: A Review

State of the Art in Research on Microgrids: A Review

Enhanced Load Power Sharing Accuracy in Droop-Controlled DC Microgrids with Both Mesh and Radial Configurations

Protection of Distributed Generation: Challenges and Solutions

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