System Maintenance

Markets & Operations

TO Connection Release Notes

System Requirements

Version 2.2.0.2

Release Dates

Training: 9.21.2023
Production: 9.28.2023

About This Release

Included in this release are the addition of the Switching Solution Tracker which is located within PCLLRW.

New Features

This new feature provides default visibility to all active topology control solutions across the RTO

Previous Releases


Version 2.1.0

Release Dates
Train: 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

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.