Damage prediction of transmission lines under typhoon disasters considering multi-effect

Aim: It is necessary to study the resilience of transmission lines under typhoon disasters considering multi-effect, because pose a great threat coastal and existing research ignored multi-effect obtained conservative results. Method: This paper proposes method predict damage towers tower-line coupling, aging, corrosion, guy wire reinforcement, etc. The coupling effect uses two-step reliability model. first step calculates probability lines. Then, we couple wind load through binomial distribution. second towers. aging two-parameter Weibull distribution calculate failure probability. corrosion uniform theory reinforcement realized by increasing mean value design for strength curves. Next, this addition equation integrate final prediction Finally, used 110-kV THJ (TieHaiJia) line in Guangdong province, China Typhoon “Mangkhut” 2018 as an example check accuracy proposed method. Results: results show that comprehensive close 1, can only reduce 0.003. Conclusion: concluded improve closer practice, but should not be blindly improved.