Parallel operation of distributed generation is an important topic for microgrids, which can provide a highly reliable electric supply service and good power quality to end customers when the
A hybrid ac/dc microgrid, which consists of alternating current (ac) subgrid(s) and direct current (dc) subgrid(s), can efficiently integrate ac and dc loads, distributed generators (DGs) with
Zhejiang University simulated, and optimized from a techno-economic perspective based on electric load profile, geographical locations, and meteorological data. Microgrids in smart
Wenzhou Nanji of Zhejiang microgrid project was funded as a national “863” demonstration project by National Research Foundation of China. The total investment is about 0.15 billion yuan. The system consists of 1000 kW wind power generation, 545 kW PV power generation, 30 kW ocean power generation and 1600 kW diesel power generation.
AC microgrids are most commonly used architecture in China. Several commercial AC micro-grids have been set up in several cities. Wenzhou Nanji of Zhejiang microgrid project was funded as a national “863” demonstration project by National Research Foundation of China. The total investment is about 0.15 billion yuan.
Similar to other countries, development of micro-grids in China has gone through from the early stage of AC microgrids to the current varieties of AC, DC and hybrid AC/DC micro-girds based on their applications. Many technical problems have been solved and new problems are continuously appeared during the development process.
Although research and applications of DC microgrids in China start later, a good progress has been achieved. In March 2014, China’s first practical building integrated photovoltaic DC microgrid system ran successfully. The DC micro-grid locates at the campus of Xiang’an Energy Engineering, Xiamen University.
In order to improve the efficiency and stability of renewable energy sources and energy security in microgrids, this paper proposes an optimal campus microgrid design that includes EV charging load prediction and a constant power support strategy from the main grid.
A hybrid ac/dc microgrid consists of alternating current (ac) subgrid (s), direct current (dc) subgrid (s) and intermediate bidirectional power converters (BPCs). The presence of dc distribution networks complicates the operation and corresponding control of the hybrid ac/dc microgrid.
