Dynamic Grid Management Solution Enables Optimization of Transmission Line Facilities

摘要

The traditional operational limits established through static transmission line rating methodologies are dependent on several volatile environmental variables identified in IEEE Standard 738-2006. The current common practice for transmission line rating is to select conservative values for these environmental variables within the standard that would equate to a low probability that conductor sag will exceed those operational limits for a very short duration. This methodology acknowledges that operational limits of transmission lines are often conservative and inherently accepts the operational risk of a relatively low probability of exceeding the established static ratings. The implication of this methodology is often significant transmission grid congestion, resulting in bottlenecks that limit the system operator's ability to transfer power. The weaknesses of this methodology and the need to evolve to a true dynamic line rating methodology have been recognized for many years without a viable and comprehensive solution being available.