A fault detection technique based on line parameters in ring-configured DC microgrid
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Satyavarta Kumar Prince
,
Shaik Affijulla
and
Gayadhar Panda
Abstract
The integration of distributed generation (DG) units into a DC microgrid presents a research challenge in terms of a proper protection scheme. The network must be protected due to the sudden change in the amplitude and direction of the fault current. In addition, due to the absence of zero-crossing of the DC fault current, protecting the network from these potential faults is a challenging task. The DC fault can be diagnosed using an appropriate detection technique after monitoring the movement of current. In this paper, a least-square estimation (LSE) technique has been adopted, which has been proven to be able to detect the faulty line strongly, so that the fault is detected by estimated parameters. This fault detection technique has been evaluated on six-lines, with faults analyzed on each line. The six-bus DC microgrid is designed in PSS®SINCAL, and the proposed method is simulated in MATLAB. Two sets of simulations are designed to validate the reliability of the proposed method: (1) pole–ground (P–G) and (2) pole–pole (P–P) fault estimation of inductance and capacitance (C) in a separate line. Simulation results show that the proposed methodology can able to accurately detect (i.e., 95% accuracy) the faulty line in the DC microgrid with respect to designated ‘trip’ value. Thus, the proposed fault detection methodology can be utilized for protection of modern DC microgrids. An experimental PV-battery-load-based fault detection technique has been developed in the laboratory and tested under P–P fault conditions in order to validate the effectiveness of the proposed scheme.
Funding source: Department of Science and Technology (DST), Government of India
Award Identifier / Grant number: EMR/2017/001880
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This research work is supported by the Department of Science and Technology (DST). This is a project sponsored by the Government of India under grant EMR/2017/001880.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Research Articles
- Theorems to explore the nature of cyber attacks on power system voltage stability
- An integrated PMU architecture for power system applications
- Commercial building load characteristics modeling considering equipment innate laws and various staff behaviors under demand response mechanism
- Design and performance improvements of solar based efficient hybrid electric vehicle
- A fault detection technique based on line parameters in ring-configured DC microgrid
- Integration of deterministic and game-based energy consumption scheduling for demand side management in isolated microgrids
- Optimal placement of wide area monitoring system components in active distribution networks
- Modeling, cost optimization and management of grid connected solar powered charging station for electric vehicle
- Improvements in deviation settlement mechanism of Indian electricity grid system through demand response management
- Design and implementation of an adaptive relay based on curve-fitting technique for micro-grid protection
- The comparison and analysis of Type 3 wind turbine models used for researching the stability of electric power systems
Articles in the same Issue
- Frontmatter
- Research Articles
- Theorems to explore the nature of cyber attacks on power system voltage stability
- An integrated PMU architecture for power system applications
- Commercial building load characteristics modeling considering equipment innate laws and various staff behaviors under demand response mechanism
- Design and performance improvements of solar based efficient hybrid electric vehicle
- A fault detection technique based on line parameters in ring-configured DC microgrid
- Integration of deterministic and game-based energy consumption scheduling for demand side management in isolated microgrids
- Optimal placement of wide area monitoring system components in active distribution networks
- Modeling, cost optimization and management of grid connected solar powered charging station for electric vehicle
- Improvements in deviation settlement mechanism of Indian electricity grid system through demand response management
- Design and implementation of an adaptive relay based on curve-fitting technique for micro-grid protection
- The comparison and analysis of Type 3 wind turbine models used for researching the stability of electric power systems
