Dynamic Line Rating estimator with synchronized phasor measurement

Abstract

New Dynamic Line Rating (DLR) estimator with synchronized phasor measurement is proposed. This estimator exploits the reaction of the transmission line amongst its electrical, thermal and mechanical models to estimate the real time conductor. This includes current carrying capacity, the final temperature of conductor and the time to violate the conductor's thermal limitation. Such information provides useful reference to the system operators to take actions aiming at increasing power transfer capability and enhancing system security and economic performance. The performance is evaluated under various weather conditions and different configurations of the proposed algorithm. The evaluation results indicate that the proposed algorithm can achieve accurate DLR under various weather conditions and provides an economic, efficient and accurate means to improve the transfer capacity compared with existing methods.