Power Line

WindSim Power Line

A COOL way to increase existing power line capacity

WindSim Power Line (WPL) provides transmission owners an enhanced view of the conditions of their transmission lines by modeling wind at high-spatial resolution and computing thermal interactions (using IEEE-738) for every transmission span on which the system is deployed. Because WPL provides full visibility of transmission line conditions, WPL is a cost-effective, scalable option for transmission line owners to increase resilience through situational awareness of the transmission system, and thereby reduce the risk of line sag-induced faults and outages. As a Dynamic Line Rating (DLR) solution, WPL enables transmission owners to utilize their transmission lines more efficiently by having a real-time view of the true capacity of their transmission line assets.

Key Benefits of using WPL

  • Span-by-span physical modeling
  • Current-temperature relations
  • Forecasts for up to 72 hours ahead
  • Identification of critical spans
  • Efficiency improvements with DLR
  • Real-time line conditions
  • Installs without disruption to service

Example of a long transmission line with several angles (line azimuths) in a complex wind field. Line ratings can vary substantially on a span-by-span level. The critical spans are usually located where there are parallel winds.

Software and Services


WindSim Power Line combines local weather monitoring, gridded mesoscale forecasts, CFD modeling specialized for complex-terrain, and the Generalized Line Ampacity State Solver (GLASS, developed by Idaho National Laboratory) into a single integrated DLR system. A successful DLR system is one with reliability, reproducibility, conservatism, and experience at the forefront of the implementation. Therefore, we offer WPL as a spectrum of vetted software tools and consulting services. How do we differentiate our solution competences for success: grid knowledge and the heat transfer calculations, CFD knowledge, mesoscale forecast and ANN (Artifical Neural Network) knowledge.

Collaborative Development

Idaho National Laboratory and WindSim

WindSim and the U.S. Department of Energy’s Idaho National Laboratory (INL) benefit from a collaborative relationship since 2012. This relationship has grown from INL being a customer of WindSim to a cooperative partnership with federal funding from the U.S. Department of Energy, targeted at improving the electricity sector’s ability to model and transfer weather conditions to every single span on the line to accurately perform Dynamic Line Rating across a larger geographic area with high reliability and certainty.

Weather-based Dynamic Line Rating has been validated through industry pilots to ensure it provides a smart grid energy solution for removing artificial or systematic power flow constraints. This is done by informing system planners and grid operators of available transmission and distribution capacity that was previously restricted by Static Line Ratings. WPL is currently deployed and continually validated in partnership with other electric utility partners and commercial meteorological solution providers, which also includes the U.S. National Oceanic and Atmospheric Administration (NOAA). WindSim is looking for additional partners to further deploy this innovative, industry accepted solution!

The joint WindSim | Idaho National Laboratory DLR Team has made the 2018 R&D 100 Finalist list. This team was also shortlisted for 2017 R&D 100 Finalists. R&D 100 Awards have served as the most prestigious innovation awards program for the past 55 years, honoring great R&D pioneers and their revolutionary ideas in science and technology. Together with the INL team that has been involved in the DLR space since 2008, the two organizations have created a solid prototype of the WindSim Power Line (WPL) solution. The individual team members have conducted successful industry funded pilot projects.