1 / 8

Current Challenges in HVRT Retrofit Requirements for Wind Generation Resources in ERCOT

The existing HVRT guidelines for Wind Generation Resources (WGRs) in ERCOT specify a limit of 1.1 pu, which has raised compliance issues as developers assess their capabilities against these standards. Ongoing studies indicate that voltage swings may exceed this limit under specific contingencies. A new NERC HVRT standard (PRC-024) is pending approval from FERC, proposing a phased implementation over five years. Clear criteria for compliance evaluation and an understanding of voltage issues in the ERCOT Panhandle are crucial as industry adapts to new standards.

alaric
Télécharger la présentation

Current Challenges in HVRT Retrofit Requirements for Wind Generation Resources in ERCOT

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. ISSUES WITH RETROFIT REQUIREMENTS FOR HVRT

  2. CURRENT SITUATION • WGRs HAVE HAD A CLEAR LIMIT OF 1.1 pu SPECIFIED FOR HVRT IN THE GUIDES • WGRs ARE NOW BEING DEVELOPED THROUGHOUT ERCOT IN MANY STAGES OF COMPLETION BASED UPON CURRENT STANDARDS • ERCOT PANHANDLE STUDIES INDICATE CERTAIN CONTINGENCIES CAN RESULT IN VOLTAGE SWINGS EXCEEDING 1.1 pu

  3. CURRENT SITUATION • CURRENTLY DEVELOPERS ARE CONTACTING VENDORS AND PERFORMING STUDIES TO DETERMINE THE ABILITY TO COMPLY WITH HIGHER HVRT REQUIREMENTS • A NERC HVRT STANDARD (PRC-024) IS BEFORE FERC FOR FINAL APPROVAL; IF APPROVED, PRC-024 ALLOWS FOR A 5 YEAR PHASE IN

  4. KEY ISSUES/QUESTIONS • IT IS NOT CLEAR WHY THE CURRENT HVRT STANDARDS ARE NOT WORKABLE • DEVELOPERS MAKE SIGNIFICANT COMMITMENTS WELL BEFORE THEY SIGN THE SGIA MAKING UNTIMELY CHANGES COSTLY • THE COMPLETED TSP FISs IN THE PANHANDLE DO NOT INDICATE ANY VOLTAGE SWING PROBLEMS

  5. KEY ISSUES/QUESTIONS • UNDER WHAT CONDITIONS DO THE STUDIES INDICATE POSSIBLE PROBLEMS • ARE THE MODELS CORRECT • CHANGES TO STANDARDS MUST BE MADE WITH ENOUGH LEAD TIME TO ALLOW THE INDUSTRY TO RESPOND EFFICIENTLY • NEW HVRT STANDARDS APPLIED TO THE POI ARE FAR MORE DEMANDING THAN HVRT STANDARDS APPLIED TO THE TURBINES

  6. KEY ISSUES/QUESTIONS • ANY CHANGES THAT ARE SHOWN TO BE NECESSARY AND EFFICIENT MUST BE PHASED IN (PRC-024 ALLOWS FOR 5 YEARS FOR FULL IMPLEMENTATION) • IF NEED IS DEMONSTRATED ONLY IN THE PANHANDLE, THEN OTHER AREAS SHOULD NOT BE INCLUDED IN NEW STANDARDS • IF NEED IS DEMONSTRATED THEN ALL TECHNOLOGIES IN THE PANHANDLE SHOULD BE INCLUDED, NOT JUST WGRs

  7. KEY ISSUES/QUESTIONS • COMPLIANCE EVALUATION CRITERIA NEED TO BE ESTABLISHED WHICH PROVIDE MODELING REQUIREMENTS AND ASSUMPTIONS TO BE USED BY DEVELOPERS/TSPs • THRESHOLDS OF PANHANDLE DEVELOPMENT NEED TO BE ESTABLISHED WHERE THE HIGH VOLTAGE PROBLEMS FIRST APPEAR

  8. WGR PROJECT DEVELOPMENT • ACQUIRE LAND (LEASES) • WIND SURVEY • ERCOT INTERCONNECT REQUEST • PRELIMINARY DESIGN • CONTRACT FOR TURBINES/ WARRANTIES • CONTRACT FOR CONSTRUCTION/WARRANTIES • FINAL DESIGN • FIS REQUEST • CONTRACT FOR BOP • CONTRACT FOR PPA/FINANCIAL HEDGES • FIS COMPLETED • OBTAIN FINANCING • SIGN SGIA • POST SECURITY • BUILD

More Related