Technical Approach

  • Analyzed the technical benefits of using transmission flexibility in timescales for intra-hour scheduling as well as for power system dynamics (minutes to hours and sub-seconds).
  • Developed scenarios of study including generation of base schedules from production cost models or models adjusted with historical real-time information. Leveraged existing scenarios such as WECC ADS 2030, or test systems like MinniWECC.
  • Developed base scenarios for PEB transmission and identified initial candidate corridors while also considering the HVDC continental macrogrid that connects the Eastern Interconnection with WECC. Leveraged existing scenarios created by industry and previous Grid Modernization Laboratory Consortium projects, minimizing efforts for any new scenarios.
  • Developed method for characterizing transmission flexibility in long- and short-term timeframes. This methodology uses production cost model simulations and characterizes how HVDC transmission enables better utilization of generation dispatch.
  • Developed algorithm for analyzing shorter-term what-if scenarios for additional transfers and access to available ramping generation in other areas.
  • Delivered proof of concept for a flexibility characterization algorithm for transmission and generation, leveraging Pacific Northwest National Laboratory’s dynamic interchange adjustment tool as well as the Transmission Tool.
  • Provided initial example for HVDC fast rescheduling using the flexibility characterization algorithm.