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As shown in the figure on the left, the dc nanogrid proposed in this paper converts the ac power supplied to the middle voltage into low voltage dc power using SST.
Each layer receives LVDC through usb-c type, and communicates power consumption and necessary data. At this time, solar energy was added to increase energy efficiency.
The added solar power energy is used as the main energy source, and AC power is used when solar power is insufficient.
Therefore, relays were installed at each layer to facilitate ac-dc conversion and efficient energy management.
By providing power supply information in the building to each node accurately and quickly, micro-optimal operation is possible, so that the existing ac infrastructure can be replaced with dc technology and converted to plug & play that can provide power and communication together using usb type-cpd.
In addition, data models and services standardized in IEC 61850 will be used to collect nanogrid in the future to form microgrids and microgrids to enable commercial power distribution network configuration, enabling more efficient energy management systems.
With technology applicable regardless of the environment, it can realize universal power services that significantly reduce costs and maximize utilization.
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IEEE/ICACT20230159 Slide.07
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