Electromagnetic Transient Modelling Requirement Updates

Engagement Outcomes

The amended versions of the EMT implementation materials have now been posted to www.aeso.ca.In April 2024, the AESO made some administrative amendments to the related EMT materials to align the documents with the Energy Storage Amendments to the ISO rules, which became effective on April 1, 2024 (AUC Decision 28176-D01-2023).

The stakeholder consultation on EMT modelling has concluded, however the AESO invites stakeholders to contact us at rules_comments@aeso.ca if they have any other EMT related questions. Thanks to everyone who participated in the process.

Purpose

The AESO is developing new electromagnetic transient (EMT) modelling requirements as part of a series of actions to preserve the secure and reliable operation of the future power system, as outlined in the AESO’s 2023 Reliability Requirements Roadmap.

As part of implementing the EMT modelling requirements, the AESO will be amending its Project Data Update Package (PDUP) and the following Information Documents:

  • ID #2010-001R – Facility Modelling Data and List of Electrical and Physical Parameters for Transmission System Model
  • ID #2017-013R – Model Validation and Reactive Power Report Guidance

The AESO will be consulting with stakeholders and hosting an information session to review the proposed changes and to provide stakeholder feedback.

Engagement Outcomes

The amended versions of the EMT implementation materials have now been posted to www.aeso.ca.In April 2024, the AESO made some administrative amendments to the related EMT materials to align the documents with the Energy Storage Amendments to the ISO rules, which became effective on April 1, 2024 (AUC Decision 28176-D01-2023).

The stakeholder consultation on EMT modelling has concluded, however the AESO invites stakeholders to contact us at rules_comments@aeso.ca if they have any other EMT related questions. Thanks to everyone who participated in the process.

Purpose

The AESO is developing new electromagnetic transient (EMT) modelling requirements as part of a series of actions to preserve the secure and reliable operation of the future power system, as outlined in the AESO’s 2023 Reliability Requirements Roadmap.

As part of implementing the EMT modelling requirements, the AESO will be amending its Project Data Update Package (PDUP) and the following Information Documents:

  • ID #2010-001R – Facility Modelling Data and List of Electrical and Physical Parameters for Transmission System Model
  • ID #2017-013R – Model Validation and Reactive Power Report Guidance

The AESO will be consulting with stakeholders and hosting an information session to review the proposed changes and to provide stakeholder feedback.

  • Implementation Plan for New Inverter-based Facilities

    As discussed during the December 5, 2023 EMT presentation to stakeholders (slide 26), the implementation plan for EMT modelling for new inverter-based facilities is as follows:

    Inverter-based Facilities Energizing Before September 1, 2024:

    • Owners of inverter-based facilities must submit the EMT model and supporting documents during the project post-energization process. For transmission-connected inverter-based resources (IBRs), the validated EMT model must be submitted within 180 days after energization along with the generating unit model validation and reactive power verification report.

    Inverter-based Facilities Energizing on or after September 1, 2024:

    • Owners of inverter-based facilities must submit the EMT model and supporting documents 100 days before energization. Additionally, for transmission-connected inverter-based resources (IBRs), the validated EMT model must be submitted within 180 days after energization along with the generating unit model validation and reactive power verification report.

    As discussed during the December 5, 2023 EMT presentation to stakeholders (slide 26), the implementation plan for EMT modelling for new inverter-based facilities is as follows:

    Inverter-based Facilities Energizing Before September 1, 2024:

    • Owners of inverter-based facilities must submit the EMT model and supporting documents during the project post-energization process. For transmission-connected inverter-based resources (IBRs), the validated EMT model must be submitted within 180 days after energization along with the generating unit model validation and reactive power verification report.

    Inverter-based Facilities Energizing on or after September 1, 2024:

    • Owners of inverter-based facilities must submit the EMT model and supporting documents 100 days before energization. Additionally, for transmission-connected inverter-based resources (IBRs), the validated EMT model must be submitted within 180 days after energization along with the generating unit model validation and reactive power verification report.

  • Stakeholder Session | December 5, 2023

    CLOSED: This discussion has concluded.

    Purpose

    The purpose of the session was to

    • Provide an update on Electromagnetic Transient (EMT) Modelling Requirement Initiative

    Session Objective

    • Create awareness of the need and drivers for the EMT modelling initiative
    • Inform the industry and seek feedback on the upcoming EMT modelling requirement to power system elements including inverter-based resources (IBRs) and implementation plan
    • Notify and seek comments on the amendments to the list of electrical and physical parameters (ID #2010-001R) related to EMT requirements per ISO Rule 502.15

    Materials

    Available under AESO Materials

    Purpose

    The purpose of the session was to

    • Provide an update on Electromagnetic Transient (EMT) Modelling Requirement Initiative

    Session Objective

    • Create awareness of the need and drivers for the EMT modelling initiative
    • Inform the industry and seek feedback on the upcoming EMT modelling requirement to power system elements including inverter-based resources (IBRs) and implementation plan
    • Notify and seek comments on the amendments to the list of electrical and physical parameters (ID #2010-001R) related to EMT requirements per ISO Rule 502.15

    Materials

    Available under AESO Materials