Application and Selection to AC and DC Voltage Grades for Microgrids

Abstract:

Distributed resources and microgrids may be designed for power supply in some area. AC-DC or DC-AC conversions are required in microgrids because of DC distributed resources, e.g. photovoltaic arrays. In this paper some factors are considered for determining the voltage grades of microgrids, both AC grid and DC grid, according to comprehensive analysis of microgrid design and operation. The factors include microgrid or distributed resource capacity, efficiency, cost, safety and so on. The line length, microgrid capacity and economic impacts are taken into account for selecting the voltage grade to connect the microgrid into the distribution system. Further, suitable AC and DC voltage grades are selected for residential and commercial application with some microgrid cases.

• Periodical: Advanced Materials Research (Volumes 791-793)
• Pages: 1876-1879
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.791-793.1876
• Online since: September 2013
• Authors: Da Wei Yang, Jian Hua Yang, Fei Lin, Jian Su, Hai Tao Liu
• Keywords: Alternating Current (AC), Direct Current (DC), Distributed Resource, Distribution System, Microgrids (MGs), Voltage Grade

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