Modeling and Analysis of Electromagnetic Defense for Resilient Power Grid Against Abnormal Damage

Realizing the security and controllability of the new power system based on the energy internet is the fundamental to guarantee the normal operation of the power grid, which may suffer from abnormal invasion during the operation. In this paper, by establishing the finite element method model, simulating and analyzing the invasion of external objects represented by graphite fiber, and examining the changes of electromagnetic field around substation transmission lines under the condition of abnormal invasion situation, a power system early warning and protection method based on sensing technology was proposed through model construction and data processing. As another major research, the thermal-electrical coupling model was selected to analyze the influence of graphite fiber attached insulator on its performance, so as to study the failure mechanism of external insulation and put forward suggestions and plans for intelligent protection of outdoor electrical equipment.