DC Microgrid Arc

Why are DC microgrids prone to arc faults?

As there is no zero-crossing waveform in the dc current, DC microgrids always faces a risk of arc faults. The regular used circuit breakers are unable to overcome the arc faults. The DC microgrids also faced other protection issues like quick rising of fault current, lack of standards, practical experiences, information and guidelines .

What is dc microgrid?

The use of DC microgrid for direct feeding of DC loads eliminates the utilization of inverters in power grids that prevent approximately 7%−15% of power loss of intact system . Dc microgrids are robust, resilient and having very simple control design with higher efficiency.

Are DC microgrids a reliable power supply?

Though the use of DC micro grids for reliable power supply is in trend, several issues are accumulated with the technology. As there is no zero-crossing waveform in the dc current, DC microgrids always faces a risk of arc faults. The regular used circuit breakers are unable to overcome the arc faults.

Are DC microgrids a game changer?

Conclusions DC microgrids can be seen as a game changer in the near future regarding electrical distribution networks. A paradigm in which AC distribution networks will coexist with DC distribution networks is what is expected in the predicted future.

Are dc microgrid protection schemes based on grid parameters?

Most of the microgrid protection schemes are used the grid parameters (such as current, voltage, frequency etc.) separately, i.e., either current or voltage or frequency, not all together. 7. Future directions Several protection strategies are reviewed in this paper to highlight the present status of DC microgrid protection schemes.

What are the research gaps in dc microgrid protection?

Here some research gaps are listed out from the literature review of DC microgrid protection. The most important factor for digital microgrid protection is uninterrupted and secure communication network. But from the literature review it is shown that no perfect scheme is developed to maintain the communication network correctly.