Webinar materials available on changes to power system modeling data requirements

The presentation and recording of the June 30 webinar “NX Application Transition to FERC Order 881” are now posted to ISO New England’s website.

The NX Application hosts data representing the physical characteristics, ratings, and operational information for transmission and generation equipment. This data is used to develop accurate system models and support the reliable operation of the New England power system.

NX-9 data includes detailed equipment modeling information such as connection terminals, impedance values, voltage schedules, transformer tap settings/ranges, and other related operating parameters used within those system models.

FERC issued Order Nos. 881 and 881-A, Managing Transmission  Line Ratings, to improve the accuracy and transparency of transmission line ratings, to ensure just and reasonable wholesale rates, and to better align the transmission grid with actual operating conditions. The FERC orders apply to all equipment owners, not just transmission owners.

The webinar covered changes to NX-9 form fields including the removal of traditional seasonal ratings, and the addition of Limit Exchange Portal (LEP) information. It also included instructions and the timeline for migrating all existing NX-9 data to the post-881 format.

ISO New England offers a variety of training materials to help participants understand the region’s wholesale electricity market and power system. Is there something specific you’d like to see? Take a short survey to provide your feedback.

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