Research on key technologies of communication for large-scale stability control system in modern power grid

With the increasing scale of modern cross regional interconnected power grid, a large number of renewable energy is connected to the grid, and the security and stability issues of the power grid is becoming more and more prominent. Meanwhile, the majority industrial users have higher and higher requirements for the reliability of power supply. So it is necessary to build a large-scale power stability control system to ensure the secure and stable operation of the power grid. Because the conventional communication technology of the power stability control system is difficult to meet the requirements of a large number of intelligent devices and high-speed data processing, The key technologies of Synchronous Transfer Module-l (STM-I) high-speed large capacity transmission, multi control terminals aggregation transmission, large-scale wireless access, communication between substations based on IEC 61850 are proposed, to solve the technical problems caused by the characteristics of large-scale power stability control system of modern power grid, such as huge amount of control stations, wide region for control and complexity of control objects.