The remote control of electric power equipment is an important approach to solving the problem of safety and steady operation of the power grid. IEC 61850 makes a new requirement on remote control for electric power equipment. Based on an analysis of the finite state machine of select before operate（SBO） with enhanced security， a new remote control model for power telecontrol system is proposed on the basis of IEC 61850. Moreover， considering the actual needs of the power telecontrol system， a telecontrol interface based on IEC 61850 is designed to control the intelligent electronic device and to open or close the circuit breakers. A prototype system based on the above-mentioned methods has been developed and gone through field-testing and trial operation in a subtransmission network， which proves that the models and methods proposed are satisfactory and feasible.