Physical and Electrical Effects of Applying Dynamic Line Ratings to Nearby Facilities

When dynamic line rating is applied to an existing transmission line, the change in the line currents can have various effects on nearby facilities. This paper generally discusses what dynamic line rating is and its physical effects on the line itself. Further discussion includes impacts on adjacent facilities, both physical and electrical, and the relative amount of influence. This discussion provides practical information and items to consider for entities looking to apply dynamic line ratings to, or otherwise uprate, an existing transmission line, even if no physical changes are made to the conductors or nearby structures. In addition, this paper provides insights for regulating entities to develop necessary standards for dynamic line rating implementation or updating the existing standard to ensure safety to the public and nearby facilities is not compromised.