Preliminary Report on ERCOT Pilot Project for Fast Responding Regulation Service (FRRS) June 12th, 2013.

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Presentation transcript:

Preliminary Report on ERCOT Pilot Project for Fast Responding Regulation Service (FRRS) June 12th, 2013

2 OUTLINE Summary of Findings Questions for PDCWG Conventional Regulation Deployment and Frequency FRRS Up and FRRS Down performance FRRS-Pilot Resource’s ability to respond to sudden large frequency deviation Measuring ERCOT deployed FRRS-up against rate of change of Frequency and Regulation-up deployment Stakeholder Review Process 6/12/ ERCOT

3 Summary of Findings Based on the first three months of observations; 1.The introduction of FRRS improves ERCOT’s ability to arrest frequency decay during unit trips. 2.FRRS Pilot Resources generally followed ERCOT FRRS deployments and responded automatically using local frequency detecting techniques. 3.When deployed, FRRS reduces the rate of change of frequency and regulation deployed to conventional Resources. 4.Observed lower quantities offered for FRRS-down and an overall lower performance for FRRS-down. 6/12/ ERCOT

4 Questions for the PDCWG 1.Can FRRS be part of Regulation Service? 2.If so, how much FRRS can participate in Regulation Service? 3.If so, are there any recommended changes to deployment logic of the pilot and what performance criteria are recommended 6/12/ ERCOT

5 Conventional Regulation deployment and Frequency 6/12/ ERCOT

6 Response from Conventional Resource 6/12/ ERCOT

7 Response from FRRS Resource 6/12/ ERCOT

8 Response from Conventional and FRRS Resources 6/12/ ERCOT

9 FRRS Performance 6/12/ ERCOT

Frequency event 6/12/ ERCOT

High Frequency Event 6/12/ Hz Frequency FRRS-Up Deployed FRRS Response 11 ERCOT

12 Frequency FRRS-Up Deployed FRRS Response Regulation Deployed Effect of FRRS-Up on Frequency and Reg-Up 6/12/ Hz 12 ERCOT

13 FRRS Impact on RoCoF 6/12/ ERCOT

14 FRRS Impact on Reg-Up Deployment 6/12/ ERCOT

15 Additional Analysis Underway Using KERMIT KERMIT is a Matlab/Simulink/Excel based platform used for simulating daily system operation with 1 second resolution. Capable of providing an assessment of a system’s ability to achieve adequate balancing and maintain system frequency Once the KERMIT model is calibrated and the deployment and un-deployment logic of FRRS are added, it can be used to study impacts of FRRS in the ERCOT system. 6/12/ ERCOT

16 Stakeholder Review Process ERCOT discussed progress of FRRS-pilot and some performance data with ETWG and PDCWG in March, April and May 2013 More discussions in June with the various subcommittees (ID options) TAC July 2 (Update on Pilot and outline options) BOD July 16 (Present update and options) 6/12/ ERCOT

17 Appendix 6/12/ ERCOT

18 Purpose of FRRS Pilot The pilot governing document states the purpose of the pilot project is to: 1.Determine whether FRRS can improve ERCOT’s ability to arrest frequency decay during unit trips 2.Determine the optimal means of deploying FRRS by testing various deployment methodologies 3.Determine whether FRRS can reduce the need for Regulation Service and thereby reduce total Ancillary Service costs 4.Assess the operational benefits and challenges of deploying FRRS 5.Provide data for ERCOT to determine the appropriate settlement treatment for Resources providing FRRS, including possible “pay-for- performance” methods such as those being developed in response to FERC Order /12/ ERCOT

19 FRRS Pilot Overview FRRS pilot deployment obligations began on Feb. 25, 2013 at hour ending 11. When the pilot began, there were 32 MW FRRS UP and 30 MW FRRS DOWN qualified to participate. Additional 1 MW FRRS UP and DOWN began participating on Mar. 16, All the qualified resources completed the qualification tests. ERCOT has made FRRS parameter changes twice and more parameter changes are expected during the course of pilot 6/12/ ERCOT

20 Log of Parameter Changes 6/12/ ERCOT

21 Impact on Reg-up in Feb /12/ ERCOT

22 April and May 2013 Performance 6/12/2013 April, 2013FRRS-UPFRRS-DOWN FRRS Resource A98.51%64.77% FRRS Resource B77.78%100.00% Total Average88.15%82.39% May 1 – May 20, 2013FRRS-UPFRRS-DOWN FRRS Resource A97.61%50.00% FRRS Resource B60.15%74.69% Total Average78.88%62.34% 22 ERCOT

23 Number of FRRS Deployments 6/12/ ERCOT

24 Determination of max FRRS-pilot participation 6/12/ ERCOT

25 May 2013 Regulation-Up Usage Vs Procurement 6/12/ ERCOT

26 FRRS-DN and FRRS-UP Payments 6/12/ ERCOT

27 OD thru OD Market Clearing Prices 6/12/ ERCOT

28 FRRS-DN Award Amounts 6/12/ ERCOT

29 FRRS-UP Award Amounts as of May hrs

30 FRRS-DN Performance 6/12/ ERCOT

31 FRRS-Up Performance 6/12/ ERCOT

32 Performance Rate for First 13 Weeks 6/12/ ERCOT