In this paper, I analyze and evaluate the the application of lightning arrester installing on 500 kV transmission line, the focus is on introducing and researching the advantages and disadvantages of 500 kV transmission line lightning arrester.500 kV transmission line lightning arrester is used to protect the ac power system electrical equipment from the damage of atmospheric overvoltage and operating over-voltage, which is currently the most advanced protector. Due to its core component is made formthe met...