Study on Risk Assessment of the Electric Power Tower and Pole Damage in Power System Under Typhoon Disaster

For a long time, the risk assessment of the power system pays more attention to the risk of chain failure caused by the internal stability damage, but less on the natural disasters like typhoon. This paper chooses the damage probability of the electric power tower and pole that is easily affected by the typhoon disaster as the probability risk indicator. Through integrating the typhoon information, electric tower and pole information and micro-topography information, this paper explores the association between various factors and the electric power tower and pole damage by making full use of historical data and establishes the Logistic model of the electric power tower and pole damage probability under typhoon disaster. Based on typhoon “Mujigae”, this paper calculates the damage probability and magnitude of the 220kV electric power tower and pole in Zhanjiang, China. The result proves that the risk indicators and calculation methods proposed in this paper are scientific and reasonable