Written comments from its contain either the • Transmission Planner identifying technical basis technical concerns with the verification for maintaining the documentation related to the current model, or a list turbine/governor and load control or of future model active power/frequency control model, changes, or a plan to or perform another model Written comments and supporting verification. • evidence from its Transmission Planner indicating that the simulated turbine/governor and load control or active power/frequency control response did not approximate the recorded response for three or more transmission system events. The written response shall contain either the technical basis for maintaining the current model, the model changes, or a plan to perform model verification4 (in accordance with Requirement R2). Each Generator Owner shall provide revised The Generator Owner The Generator The Generator Owner The Generator Owner MOD-027-1 R4. model data or plans to perform model provided revised Owner provided provided revised model failed to provide verification (in accordance with model data or plans to revised model data data or plans to revised model data or Requirement R2) for an applicable unit to its perform model or plans to perform model failed to provide Transmission Planner within 180 calendar verification more than perform model verification more than plans to perform days of making changes to the 180 calendar days but verification more 240 calendar days but model verification turbine/governor and load control or active less than or equal to than 210 calendar less than or equal to within 270 calendar power/frequency control system that alter the 210 calendar days days but less than or 270 calendar days of days of making equipment response characteristic. of making changes to equal to 240 making changes to the changes to the the turbine/governor calendar days of turbine/governor and turbine/governor and and load control making changes to load control or active load control or active or active the turbine/governor power/frequency power/frequency power/frequency and load control or control system that control system that control system that active alter the equipment altered the equipment alter the equipment power/frequency response characteristic. response response control system that characteristic. characteristic. alter the equipment response characteristic.
• Written comments from its Transmission Planner identifying technical concerns with the verification documentation related to the turbine/governor and load control or active power/frequency control model, or • Written comments and supporting evidence from its Transmission Planner indicating that the simulated turbine/governor and load control or active power/frequency control response did not approximate the recorded response for three or more transmission system events. The written response shall contain either the technical basis for maintaining the current model, the model changes, or a plan to perform model verification4 (in accordance with Requirement R2). contain either the technical basis for maintaining the current model, or a list of future model changes, or a plan to perform another model verification. MOD-027-1 R4. Each Generator Owner shall provide revised model data or plans to perform model verification (in accordance with Requirement R2) for an applicable unit to its Transmission Planner within 180 calendar days of making changes to the turbine/governor and load control or active power/frequency control system that alter the equipment response characteristic. The Generator Owner provided revised model data or plans to perform model verification more than 180 calendar days but less than or equal to 210 calendar days of making changes to the turbine/governor and load control or active power/frequency control system that alter the equipment response characteristic. The Generator Owner provided revised model data or plans to perform model verification more than 210 calendar days but less than or equal to 240 calendar days of making changes to the turbine/governor and load control or active power/frequency control system that alter the equipment response characteristic. The Generator Owner provided revised model data or plans to perform model verification more than 240 calendar days but less than or equal to 270 calendar days of making changes to the turbine/governor and load control or active power/frequency control system that alter the equipment response characteristic. The Generator Owner failed to provide revised model data or failed to provide plans to perform model verification within 270 calendar days of making changes to the turbine/governor and load control or active power/frequency control system that altered the equipment response characteristic.