1 / 7

Information Policy Changes To improve transparency on transmission line derates

This proposal aims to improve transparency on transmission line derates by allowing the ISO to publish derate information on a weekly basis. The information would include affected transmission lines, original and new line ratings, and expected date of remediation.

pauledavis
Download Presentation

Information Policy Changes To improve transparency on transmission line derates

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Information Policy ChangesTo improve transparency on transmission line derates Citigroup Energy Inc. Constellation Energy Vitol Inc.

  2. Background • NERC alert issued last year • Requires transmission owners to inspect field conditions around their lines and derate lines that cannot operate at their designated ratings due to actual conditions. • Inspections ongoing now. • Derates and outages have occurred as a result of these inspections

  3. Problem • While outages are published on a timely basis on ISO website, there is not good transparency on derates • Only public information on line derates is the information included in monthly FTR models. • Monthly publishing of this information is not frequent enough to meet the needs of those transacting in the market on a daily basis.

  4. Information Policy Issue • The Information Policy is not clear about whether near-term transmission limits can be published. • Section 3(a) lists information that is considered public: • Transfer limits used in planning are considered public information. • The Policy notes that these limits do not include near-term transmission models or transfer limits used in system operations or real-time limits from the control room energy management system.

  5. Proposed Change • Section 3(a) Clarifications: • Clarify that the ISO may publish certain information, on a weekly basis, related to derates that result from compliance with the NERC alert. This information includes: • Affected transmission line • Original line rating • New line Rating • Expected date of remediation (restore to original rating)

  6. Discussion • The proposed change would allow the ISO to release transmission derate information to the public on a weekly basis. • The ISO has expressed willingness to do this if these changes are approved. • The information would be treated as CEII (Critical Energy Infrastructure Information). • (Only those with CEII clearance would have access to it).

  7. Questions?

More Related