Network Strengthening Strategy for Fault Disposal of High-Voltage Power Grid

The application of the Internet of Things and embedded technologies in the power grid is in a period of rapid development, and the structure and data of the high-voltage power grid are becoming increasingly complex. However extreme natural disasters such as typhoons will have a serious impact on the high-voltage AC power grid, destroying operating equipment and leading to large-scale failures of the power grid and power outages, which not only causing economic losses, but also bringing difficulties to the fault handling methods of grid dispatch. In this paper, the current coordinated control technology of generation-grid-load three sides after the failure of the high-voltage grid is introduced. In addition, to prevent grid fault and rapidly recover power supply, the resilient power grid construction technology, which include two network strengthening strategies for the hot spare lines operation and the bus tie switches closing with their technical implementation methods are proposed in detail. Finally, the effectiveness of the strategy is proved through case studies on the high-voltage grid model of Zhejiang Power Grid.