We consider the microgrid operation control technology including design of microgrid operation control system, MG control device and control strategy. We pay much attention on microgrid operation control device which is core control device. In order to solve the contradiction of quick speed about microgrid operation mode shift and slow speed about the management system, three-layers control architecture based on IEC61850 is designedand adaptive control strategy is used on MG operation control system. The system has been applied in a distributed generation/energy storage power station. The actual operation shows that the system can be effectively and flexibly connected to distribution network.