The existing On-line monitoring devices of power transmission and transformation equipment run in isolation, do not have a unified communication protocol, and cannot share the data. That means decision-making can’t be provided to Condition Based Maintenance and other power business. In order to monitor and share the panoramic information of smart power grids, this paper put forward multi-level and multi-dimensional 0perations automation system of power transmission and transformation equipment. This work has given the framework and hardware architecture of the system. Then the function and interface of the system has been stated in detail with an instance. With the completion of operations automation system, Power Grid Company can have a reference on operations automation system.