Abstract:

Microgrid power supply is taken by distribution systems in remote areas of Hainan. Using the abundant renewable resources , and considering the cost of reconstruction, seamless switch of operation modefrom offgrid to gridconnectedis realized, which provide uninterrupted power to local residents reliably. The operation mode and control principle of microgrid are introduced. The reforming program that switches regional microgrid from offgrid to gridconnected is represented from system working principle and breakerreforming.

Key words:

regional microgrid, distribution system reforming, gridconnect diverter switch