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HomeMy WebLinkAbout2022.09.30 IMC Executed MinutesAlaska Intertie Management Committee (IMC) REGULAR _ 1EET1NG MINUTES Alaska Energy Authority Board Room Friday, September 30, 2022 1. CALL TO ORDER Chair Ed Jenkin called the meeting of the Alaska Intertie Management Committee to order on September 30, 2022, at 8:59 a.m. A quorum was established. 2. ROLL CALL FOR COMMITTEE MEMBERS Members present: Ed Jenkin (Matanuska Electric Association (MEA)); Andrew Laughlin (Chugach Electric Association (CEA)); Nathan Minnema (Golden Valley Electric Association (GVEA)); and Bill Price (Alaska Energy Authority (AEA)). 3. PUBLIC ROLL CALL Public present: Sunny Morrison (Accu-Type Depositions); Joel Paisner (Ascent Law Partners); Jennifer Bertolini (AEA); Dona Keppers (AEA); Mark Ziesmer (AEA); Russell Thornton (CEA); Dan Bishop (GVEA) (arrived late); Molly Howard (GVEA); Pete Sarauer (GVEA); Larry Jorgensen (HEA); Martin Law (HEA); David Pease (MEA); John Bell; and Bernie Smith (Public). 4. PUBLIC COMMENTS — None 5. AGENDA APPROVAL MOTION: Vice -Chair Laughlin made a motion to approve the agenda, as presented. Motion seconded by Mr. Price. The agenda was approved without objection. 6. APPROVAL OF PRIOR MINUTES — July 29, 2022 MOTION: Mr. Price made a motion to approve the Meeting Minutes of July 29, 2022. Motion seconded by Vice -Chair Laughlin. Chair Jenkin commented that only one member in attendance today was in attendance at the July 29, 2022 meeting. The Minutes of July 29, 2022 were approved without objection. IMC Meeting Minutes — September 30, 2022 7. NEW BUSINESS - NONE 8. OLD BUSINESS 8A. Intertie Asset Management Chair Jenkin requested that Molly Howard, GVEA, present the information. Ms. Howard reviewed the document attached to the agenda regarding the objectives, goals, and current progress of Alaska Intertie Asset Management (AM). Data entry of transmission line structures and profiles is a continued effort. Work is ongoing to develop the transmission line preventative maintenance program and manual. The Vegetation Management plan was previously submitted to IOC. Chair Jenkin asked if any of the mentioned activities will require additional funding to the current budget. Ms. Howard expressed her belief that the activities are sufficiently covered in the budget. Chair Jenkin asked if the activities are being undertaken through the Maintenance Subcommittee. Ms. Howard agreed. Vice -Chair Laughlin commented that Ms. Howard previously reported transmission data entry at about 50% complete. He asked for an update on the completion amount. Ms. Howard noted that staff has not made as much progress as hoped and they are still about 50% complete. Chair Jenkin expressed appreciation to the Maintenance Subcommittee and to Ms. Howard for the report. There were no other questions. 8B. Railbelt Protection Coordination Chair Jenkin noted that the Chair of the Systems Protection Subcommittee is not in attendance today. He indicated that this item was discussed at the previous Intertie Operating Committee (IOC) meeting with Dan Bishop. Mr. Minnema provided information regarding the Railbelt Protection Coordination. Mr. Minnema indicated that he spoke with Adam Vogel (sp), Chair of the Relaying Subcommittee, and the determination was made that an increased evaluation of system -wide events would occur at the subcommittee level, rather than through a coordinated Railbelt-wide formal study. Chair Jenkin agreed that issue was discussed at the IOC meeting and that no recommendation was made to proceed with a Railbelt Protection Coordination Study. Any changes made that would affect the protection on the Intertie would have to be reviewed by the Relay and Reliability Subcommittee and the IOC. There were no other questions or comments. 8C. Systems Studies Subcommittee 2022/2023 work Chair Jenkin informed that the IOC Planned Projects for 2022-2023 document prepared by John Bell, Chair IOC System Studies Subcommittee (SSS), is attached to the agenda. Mr. Bell noted that he was unable to join by MSTeams and that he is on the public line. He provided a brief summary of the two ongoing efforts that the SSS will prioritize during the course of the current IMC Meeting Minutes — September 30, 2022 2 budget year. The first focus includes the pilot project for a centralized synchrophasor data system, which was motivated by the oscillation study completed in 2019. It was determined that a tool was needed to perform oscillation analysis, frequency response analysis, and dynamic model validation. The current work is focused on the technical specification and request for proposal (RFP) for the centrally accessible system for the synchrophasor data. Mr. Bell discussed the second focus is in coordination with the Dispatch and System Operations Subcommittee on the development of a draft reserve policy that includes the recommendations of the recently completed reserves study. Mr. Bell reviewed that the SSS is contemplating its next Railbelt study topic direction of the stability impacts of inverter -based generation and battery energy storage systems. The scope has not yet been determined. Chair Jenkin expressed appreciation to Mr. Bell and supports the review of the effects and settings of inverter -based generation and the ride -through capability of the Railbelt to disturbances. Mr. Bell agreed that it makes sense to take direction from the IEEE 2800 standard regarding frequency and voltage. Vice -Chair Laughlin asked for the timeframe on beginning the inverter -based generation study. Mr. Bell indicated that the scope of the study will likely begin in early 2023, and the draft RFP will likely occur in the 2023/2024 budget year. Chair Jenkin expressed appreciation for the Subcommittee's efforts in providing the timely reserve policy data that is important for regional resource planning by the Railbelt's approved electrical reliability organization. There were no other comments or questions. 9. COMMITTEE REPORTS 9A. Budget Subcommittee i. Budget to Actual Expense Report for 06.30.22 Mark Ziesmer, AEA, discussed the Budget to Actual Expense Report for the period from July 1, 2021 to June 30, 2022. The total revenues were approximately $465,177 greater than budgeted. This was primarily due to the increased amount of energy usage. The total operating expenses were approximately $815,000 less than budgeted. The total administration expenses were approximately $51,000 less than budgeted. Mr. Ziesmer noted that an amendment was approved in May to increase the administration expense category. The total budget surplus was $1.3 million. Mr. Ziesmer explained that one of the impacts to revenue and invoicing was the amount of actual energy usage. The projected energy usage budgeted was 185,535 MWH and the actual energy usage was 224,243 MWH. Chair Jenkin requested staff to review the process for utility reimbursement based on wheeling. Dona Keppers, AEA, discussed that the audit firm has begun their field work for information. The surplus is calculated and then any entries as a result of the annual audit are included. The audit is usually completed in November. The report and analysis is presented in December and IMC Meeting Minutes — September 30, 2022 3 the surplus is then reimbursed to the utilities. Ms. Keppers commented on the budget surplus of $1.3 million. She noted that approximately half of the surplus was the budgeted marker ball project that did not occur in FY22. Chair Jenkin reported that the marker balls have been ordered and are expected to arrive during this year's budget. There were no other comments or questions. 9B. IOC Committee Chair Jenkin asked Mr. Minnema to present on this item and to answer any questions, since Mr. Bishop is not in attendance. Mr. Minnema noted the IOC Committee was briefed on some of the projects related to the budget to actual report previously discussed. There were no questions. Chair Jenkin noted under Item 4b. of the IOC Report that the Engineering, Relay, and Reliability Subcommittee indicated their desire and willingness to work with the SSS to evaluate the impact of inverter -based resources on the system reliability. He expressed appreciation for their offer. There were no other comments. 9C. Operator's Report Chair Jenkin welcomed Russell Thornton, CEA, to present the Operator's Report. Mr. Thornton indicated that the numbers included in the report are for July through August. Both MEA and GVEA have increased their Intertie usage compared to this time last year. One Intertie trip event occurred between Teeland and Douglas. It was a line -to -line fault and the cause has not yet been determined. The quarterly reliability report is included and lists the frequency response during the month of August. The low was 7.1 MW/0.1 Hz and the recent high was 11.9 MW/0.1 Hz. Chair Jenkin noted that the frequency response numbers are higher than normal. He asked Mr. Thornton to comment on the possible reasons. Mr. Thornton discussed that there is no current analysis that substantiates the highest event. He reviewed that efforts are ongoing to try to find correlations between the beta and changes seen and to try to determine clear causal relationships. Chair Jenkin supports the effort to find a correlation to system beta that can be used for data dispatch and consideration. Mr. Thornton reviewed that the system beta has seen some abnormally low values, as discussed in the previous meeting. He believes the system beta has stabilized more recently at a minimum of 6 to 7 MW/0.1 Hz. Chair Jenkin noted the recent change in responsiveness from Nikiski's battery system that could have an affect on the data. Mr. Thornton agreed there are two batteries online in the Railbelt and specific generation tuning has occurred to improve response. Mr. Bishop indicated that he is on the phone line and is available to answer any questions. Chair Jenkin noted that the IOC Committee item was previously discussed and asked Mr. Bishop if he had any specifics comments to add. Mr. Bishop responded that he had no additional comments. There were no other questions. 10. MEMBER COMMENTS IMC Meeting Minutes — September 30, 2022 4 Vice -Chair Laughlin thanked Chair Jenkin for an efficient first meeting. He expressed appreciation to staff for their reports and explanations. He welcomed Mr. Price to the Committee. Mr. Price echoed the comments of Vice -Chair Laughlin. He expressed appreciation for members' patience as he becomes informed and able to add value to the Committee. Mr. Minnema expressed appreciation to members. Jennifer Bertolini, AEA, informed that there were issues with the link provided for this meeting. She apologized and advised that a new link has been initiated and distributed to those attending the BPMC meeting, which will begin directly after the IMC meeting. Chair Jenkin expressed appreciation for everyone's participation in the meeting. He emphasized appreciation for the work and efforts of the System Studies Subcommittee and the Engineering, Relay, and Reliability Subcommittee. 11. NEXT MEETING DATE — December 9, 2022 Chair Jenkin informed that the next meeting is December 9, 2022. There were no questions. 12. ADJOURNMENT There being no further business of the AIMC, the meeting adjourned at 9:42 a.m. Ed Jenkin, Chai Bill Pitco, AEA -Secretary IMC Meeting Minutes — September 30, 2022