Condition Evaluation of Transmission Line

This paper describes the effect of the condition evaluation of transmission line Cand the methods of condition evaluation mainly used in current. With a 500kV line as example, shows the process of condition evaluation of the transmission line. This paper also present the problems should be considered in the condition evaluation process. Aiming at the method of transmission line condition evaluation for the moment, this paper study the differentiation condition evaluation method according to the degree of significance and the level of risk, the result of the last condition evaluation, which has the positive significance to the state of the transmission line condition maintenance.