Micro-grid network attack protection method, device and system based on istio

The invention discloses an istio-based microgrid network attack protection method, device and system, and the method comprises the steps: monitoring a communication link of a server of a distributed power supply according to a central controller and communication link data from a distributed controller, and judging whether the communication link is abnormal or not; when data transmission is abnormal, a communication link of the server is cut off; and when the decrease of the communication flow exceeds a first preset value, the service in the server is terminated. By adopting the embodiment of the invention, the communication link of the server of the distributed power supply is integrally monitored by the central controller; besides, data transmission abnormity caused by FDI attack and communication flow decrease caused by DOS attack can be judged according to the central controller, and a mode of cutting off a communication link or terminating service is adopted, so that the microgrid can be protected agains