The Influence of Typhoon on the Guangdong Power Grid and Countermeasures

Abstract

Guangdong affected by typhoon frequently, so power sectors pay high attention to the transmission line failure caused by the typhoon. Based on typhoon data in Guangdong, this paper gets characteristics of typhoon with a scientific method of the statistical analysis. By studying the loss of Jiangmen power grid caused by typhoon, this paper summarizes the cause of power accidents and puts forward countermeasures. It shows that typhoon mainly occurred between July and September in Guangdong, accounting for 72% of all the year round; Typhoon in Guangdong showed the tendency of reduced from west to east; Form 2008 to 2010, transmission line tripped 50 times caused by typhoon, and distribution circuit tripped 710 times in Jiangmen; The main reasons of breakdown are the mechanical overload, the flashover caused by wind age yaw and the reduction of air gap discharge voltage caused by lightning. This paper proposes to strengthen the early warning of typhoon, improve the design standard of transmission/ distribution line and develop new type tower material further study.