The invention provides an anti-
islanding protection method based on cloud edge
collaboration, and the method comprises the steps: obtaining historical fault data, carrying out the
data processing of the historical fault data, obtaining a fault mode discrimination result, judging whether a micro-grid has an
islanding operation risk or not through combining the topological structure information of a
power grid, real-time operation data, and load demand prediction data, and obtaining an
islanding protection result. If so, acquiring
power output fluctuation data; the output power of the power supply and the load demand power are monitored in real time, if the output fluctuation of the power supply exceeds a
voltage protection constant value or the load demand power exceeds a frequency protection constant value, the
edge computing gateway starts a local anti-islanding control strategy, and meanwhile, the charging and discharging power of the power distribution network is adjusted; in the anti-islanding control
strategy execution process, the
edge computing gateway continuously collects real-time operation state data of the micro-grid, the power supply duration, the
electric energy quality and the standby capacity of the micro-grid under islanding operation are evaluated according to the operation state data, and the multi-target optimization model and the operation constraint condition of the micro-grid are dynamically adjusted.