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TO Connection Release Notes

System Requirements

Version 2.1.0

Release Dates

Training: 4.17.2023
Production: 4.27.2023

About This Release

Included in this release are the addition of a projected post, the addition of a PCLLRW Event Historian, and miscellaneous visual enhancements.

New Features
  • Concept of projected post – a field which is optionally used by operators to estimate the most severe PJM state estimated post-contingency condition
  • Relief needed with projected post banners – banner messages will be updated to reflect valid or deficient states
  • PCLLRW Event Historian - displays previously issued Load Shed Plans in reverse chronological order
Existing Feature Improvements

Enhanced look and feel for application as a whole including consistent usage of kV vs KV

Previous Releases


Version 1.1.1

Release Dates
Train: 10.14.2021
Production: 10.21.2021

About This Release

Included in this release are changes regarding the PCLLRW sub-tool look/feel. Major features for members include Light and Dark Theme Alignment and User Experience improvements; TO Visibility for all Issued/Impactful TOs; and, a Filter option for those TO zones who exist within a single parent group. Also includes internal administrative changes.

New Features

  • New Company Filter on SA Exceedances page for TOs with multi-zone views
  • When available, Load DFAX driven visibility of trends/exceedances for TOs meeting a PJM admin defined threshold
  • SA Exceedance table visibility of trends/exceedances to all TOs issued a PCLLRW, regardless of Monitored Element ownership

Existing Feature Improvements

  • Enhanced look and feel for SA Exceedances tables
  • Similar BTM view for voltage PCLLRWs as already existed for thermal issues
  • (Internal only) PJM admin features
  • (Internal only) PJM VDFAX and DFAX available indicators
  • (Internal only) Redesign of PCLLRW monitoring tab, including Suppressed constraints

Bug Fixes & Step to Recreate

    Operations Updates

  • New Company Filter on SA Exceedances page for TOs with multi-zone views
  • When available, Load DFAX driven visibility of trends/exceedances for TOs meeting a PJM admin defined threshold
  • SA Exceedance table visibility of trends/exceedances to all TOs issued a PCLLRW, regardless of Monitored Element ownership
  • Enhanced look and feel for SA Exceedances tables
  • Similar BTM view for voltage PCLLRWs as already existed for thermal issues
  • (Internal only) PJM admin features
  • (Internal only) PJM VDFAX and DFAX available indicators;
  • (Internal only) Redesign of PCLLRW monitoring tab, including Suppressed constraints

Version 1.0.2 (Initial Production Release)

Release Dates
Train: 4.29.2021
Production: 5.12.2021

About This Release

Initial release for the TO Connection tool suite which is a PJM and Member TO container application for Operator to Operator communication around transmission tools such as PCLLRW & Stability Viewer.

New Features

TO Connection framework, including upgrades to PJM framework standards. PCLLRW moves down a layer, but is otherwise unchanged. Stability Viewer tool added, allowing for PJM sharing of stability limitations with Member TOs for their awareness.