Micro-grid type uninterrupted power system

The invention relates to a micro-grid type uninterrupted power system. The micro-grid type uninterrupted power system comprises an optical record inverter system, a fuel power generation system, a switching circuit, a monitoring circuit, a comparison circuit and a control circuit. According to the micro-grid type uninterrupted power system, when the electric supply is normal, the switching circuit starts a first switching state, and the electric supply and the optical record inverter system supply power to a load; when the electric supply is abnormal and the power supplied by the optical record inverter system can meet power demand of the load, the switching circuit starts a third switching state, and then only the optical record inverter system supplies the power to the load; when the power supplied by the optical record inverter system can not meet the power demand of the load, the switching circuit starts a second switching state, and the fuel power generation system supplies the power to the load, so that the continuous power supply requirement of a high-power load can be met.