Topic:"Generation Grid Resources" in M11764

ed by Market Participants or Connection Applicants other than NS Power; and (f) requirements for additional DSM programs and / or generating capability (for energy or ancillary services).” DATE FILED: June 27, 2024 Page 5 of 67 2024 10-Yea...

AI summary The document outlines requirements for additional demand-side management (DSM) programs and generating capability, as part of the 2024 10-Year System Outlook. It includes considerations for market participants and connection applicants other than NS Power.

Tupper 2 Coal-to-Gas conversion 150 Fast Acting Generation 600 Additions - Coal to HFO Operation (Lingan 1, 3 & 4 Conversions) 459 Retirements: Trenton 5 & 6 -304 Lingan 1, 3 & 4 (Coal Operation), Lingan 2 -607 Point Tupper (Coal Operation...

AI summary The text outlines anticipated changes in firm supply capacity, including coal-to-gas conversions, retirements of coal plants, and additions of new resources. It references demand response contributions, biomass transitions, and additional wind projects beyond current procurement programs.

2024 Page 18 of 67 2024 10-Year System Outlook Non-Confidential Winter Additions Retirements • Installed capacity: 200 MW • Firm capacity: 12 MW20 2032/2033 Wind – Future Procurements • Installed capacity: 200 MW • Firm capacity: 12 MW20 2...

AI summary The document outlines the 2024 10-Year System Outlook, focusing on winter additions and retirements, with specific details on wind power procurements and capacity figures for the years 2032/2033 and 2033/2034.

rs 23 Lingan units 1, 3, 4 operate on HFO from 2030-2034 24 Lingan unit 2 will be held in cold reserve, recallable to service as needed until 2027. See Section 3.2.3. DATE FILED: June 27, 2024 Page 22 of 67 2024 10-Year System Outlook Non-...

AI summary The document outlines the operational status of Lingan units 1, 3, and 4, which will run on Heavy Fuel Oil (HFO) between 2030 and 2034, while Lingan unit 2 will remain in cold reserve until 2027. This information is part of the 2024 10-Year System Outlook, filed on June 27, 2024.

25 Service 2320 1616 3283 674 2923 254 161 270 219 232 Hours Capacity 14 12 23 0 0 0 0 0 0 0 Factor (%) Trenton Unit 4 3 4 0 0 0 0 0 0 0 5 Cycles Service 1449 1240 2008 0 0 0 0 0 0 0 Hours Capacity 58 57 63 48 12 0 0 0 0 0 Factor (%) Trent...

AI summary The text presents a table of service hours, capacity factors, and cycles for various units at Trenton and Tufts Cove power stations. It includes data spanning multiple years and provides metrics related to power generation performance.

Unit 29 27 20 30 61 62 65 46 45 56 Cove 2 Cycles Service 5280 2558 4208 3534 3562 2142 1676 1679 1240 1235 Hours Capacity 49 34 41 42 54 30 23 28 21 18 Factor (%) Tufts Unit 39 40 27 35 55 89 83 80 79 71 Cove 3 Cycles Service 5788 3677 524...

AI summary The document provides a 10-year system outlook for 2024, including data on unit cycles, service hours, capacity factors, and a note about Point Tupper's conversion to natural gas in 2028.

Page 23 of 67 2024 10-Year System Outlook Non-Confidential Service 7120 7033 7544 7287 7279 5822 5240 5355 4051 3677 Hours Capacity 55 71 79 82 80 62 55 57 44 38 Factor (%) Tufts Unit 158 97 52 77 83 237 221 206 218 250 Cove 5 Cycles Servi...

AI summary The document presents a 10-year system outlook for 2024, including service hours, capacity factors, and unit cycles for various power generation units such as Tufts, Cove 5, Cove 6, and PH Biomass. It outlines utilization trends and performance metrics for these facilities.

27 LIN-1, LIN-3, LIN-4 values from 2030 onwards reflect operation on Heavy Fuel Oil (HFO). 28 POT-2 values from 2029 onwards reflect operation post natural gas conversion. DATE FILED: June 27, 2024 Page 26 of 67 2024 10-Year System Outlook...

AI summary The document outlines the 2024 10-Year System Outlook, noting that LIN-1, LIN-3, LIN-4 values from 2030 onwards are based on Heavy Fuel Oil (HFO) operation, and POT-2 values from 2029 onwards reflect post-natural gas conversion operations.

2 -T 516 05-Dec-14 Cumberland 1.26 1.26 37N Tidal 30-Jun-23 GIA NRIS Executed 3 -T 540 28-Jul-16 Hants 14.1 14.1 17V Wind 31-Oct-23 GIA NRIS Executed 4 -T 542 26-Sep-16 Cumberland 3.78 3.78 37N Tidal 30-Jun-25 GIA NRIS Executed 5 -D 557 19...

AI summary The document lists various energy generation projects with details such as type, capacity, location, and status, including tidal and wind projects executed or in progress, with references to GIA and NRIS.

12 - T 597 07-May-21 Queens 36.00 36.00 50W Wind 30-Sep-25 GIA NRIS Executed 13 - T 647 06-Oct-21 Cumberland 1.50 1.50 37N Tidal 31-Dec-23 GIA in NRIS Progress 15 - D 654 16-Feb-22 Halifax 0.125 0.125 127H- Solar 20-Sep-22 GIA N/A 413 Exec...

AI summary The document presents a list of generation and storage projects, including their locations, capacities, technologies, completion dates, and associated agreements. These projects include wind, tidal, solar, and battery systems across various regions in Nova Scotia, with some projects in progress and others completed.

Executed 29 - D 700 21-Apr-23 Cape 0.56 0.56 82S- Solar 30-Sep-23 SIS N/A Breton 303 Complete 31 - T 686 23-Jan-23 Cumberland 340.00 340.00 L-8001 Wind 01-Dec-25 SIS in NRIS Progress 32 - D 711 05-Jul-23 Halifax 0.48 0.48 139H- Solar 31-Oc...

AI summary The text presents a list of projects with details such as queue numbers, request dates, counties, megawatts, and service types, including solar and wind projects, along with their statuses and service dates. It is part of a 10-Year System Outlook document filed on June 27, 2024.

1 Group 32 or beyond requires EMT analysis as part of their SIS to determine if additional equipment 2 is required to support the integration of the new generation resource. 3 4 4.2 OATT Transmission Service Queue 5 6 As of June 07, 2024 t...

AI summary The document discusses the requirement for EMT analysis in Group 32 or beyond for SIS and provides details on two active requests in the OATT Transmission Queue as of June 7, 2024, including their project types, locations, and statuses.

Winter Annual Wind Cumulative Marginal ELCC % Firm Capacity Period Capacity Added Capacity of Wind Applied to New Wind Contribution from (MW) (MW) Capacity New Wind (MW) Pre 2024 611 2024/2025 0 611 48 UARB Decision Letter, Generation Util...

AI summary The document references a UARB decision letter and studies related to generation utilization, optimization, and capacity value, including a 2019 study by Energy+Environmental Economics. It also includes a 2024 10-Year System Outlook, highlighting planning and resource planning efforts.

will implement the 25 following strategies: 26 • Lingan 2 will continue to be available in cold reserve, recallable to service as needed, as 27 discussed in Section 3.2.3. 50 NS Power 2024 Load Forecast, M11689, April 30, 2024 DATE FILED:...

AI summary NS Power will maintain Lingan 2 in cold reserve and explore near-term firm imports from Newfoundland via the Maritime Link. The document also outlines a 10-year load and resources outlook, showing projected firm peak loads and required reserves from 2024/2025 to 2033/2034.

Page 52 of 67 2024 10-Year System Outlook Non-Confidential 1 7.2.1 Bulk Power System (BPS) 2 3 The NS Power bulk transmission system is planned, designed and operated in accordance with 4 NERC Standards and NPCC criteria. NS Power is a mem...

AI summary The document outlines the definitions and operational standards for the Bulk Power System (BPS) and Bulk Electric System (BES) under NS Power, emphasizing compliance with NERC standards and the NS Exception Procedure, which was approved by the NSUARB in 2017.

1 7.9 NSPI System Inertia and Strength 2 3 Conventional synchronous machine-based power generation supplies both active power and 4 reactive power, resulting in a high Short Circuit MVA (SCMVA) levels in most areas. SCMVA is 5 the ability...

AI summary The chunk discusses the impact of renewable inverter-based generation on system inertia and frequency stability. It explains that conventional synchronous machines provide inertia and frequency support, which is lacking in inverter-based resources like wind and solar. This may lead to frequency fluctuations and potential instability if not properly managed.

v 2024 10-Year System Outlook Report NSUARB IR-15 Attachment 1 Page 6 of 60 Frequency Control and System Strength Assessment Acronyms Acronym Term BES Bulk Electric System BESS Battery Energy Storage System CI Control Interaction EMT Elect...

AI summary This document outlines the Frequency Control and System Strength Assessment as part of the 2024 10-Year System Outlook Report for the Nova Scotia Utility and Regulatory Board (NSUARB) Integrated Resource Plan (IR-15). It includes a list of acronyms related to power systems and grid operations.

.4 Operability ....................................................................................................................... 42 7.2 Recommendations ....................................................................................

AI summary The document outlines the 2024 10-Year System Outlook Report, focusing on frequency control and system strength assessment. It includes appendices with SCMVA benchmark values and sensitive SCMVA buses for various years and scenarios, highlighting planning considerations for high IBR penetration and system reliability.

any instance in time. Generation is the electrical energy to supply the load at that instance in time. The generation can be within Nova Scotia or imported from a neighbouring utility. If the load (MW) and generation balance is not maintai...

AI summary This section explains how system frequency is maintained in the electricity grid, emphasizing the role of traditional synchronized generators in providing Synchronous Inertial Response (SIR) during disturbances. It highlights the importance of balancing load and generation to prevent frequency fluctuations and equipment tripping.

tem stability from a frequency perspective over the short duration. This short duration support allows online generation to adjust their MW output to balance the load and further stabilise the system. Newer renewable resources such as wind...

AI summary The text discusses the impact of inverter-based resources (IBR) on system frequency stability and the importance of system strength in maintaining grid stability. It highlights the difference between traditional synchronous machines and IBR in terms of frequency support and the need for control systems to simulate inertia and provide fast power injection.

2 2024 10-Year System Outlook Report NSUARB IR-15 Attachment 1 Page 12 of 60 Frequency Control and System Strength Assessment areas, and the system was considered “strong”. With the phasing out of synchronous generating units, there will b...

AI summary The document discusses the impact of phasing out synchronous generating units on system strength, noting that inverter-based resources (IBRs) provide significantly less support than traditional synchronous units. As IBRs increase in the generation mix, the system may become weaker, leading to voltage volatility and other operational risks.

ear System Outlook Report NSUARB IR-15 Attachment 1 Page 17 of 60 Frequency Control and System Strength Assessment 2 Assessment Metrics and Methodologies The metrics and methodologies described below are utilized for this study. The assess...

AI summary The document outlines the assessment metrics and methodologies for evaluating frequency control and system strength in the context of integrating inverter-based resources (IBR) into the power system by 2030. It highlights the importance of system inertia and fast frequency response (FFR) from IBR for maintaining system stability following disturbances.

pid voltage phase shifts. Until IBR technology is further advanced, some SIR will be required to maintain acceptable performance for an NSPI generation mix that includes large scale IBR. As mentioned previously, converter-based IBR generat...

AI summary The document discusses the challenges of maintaining system inertia and frequency response with the increasing use of inverter-based renewable generation (IBR) in Nova Scotia Power's (NSPI) generation mix. It outlines various methods to achieve inertial support, including synchronous generation, HVDC interconnectors, and fast frequency response from IBR plants and energy storage.

undamental frequency oscillations. The Australian experience highlights the need to utilize wide area EMT models to replicate system observed issues that were not reproducible by any other means [15]. Increasing the short circuit level is...

AI summary The document discusses the challenges of integrating Inverter-Based Resources (IBR) into the grid, particularly in areas with low system strength. It highlights the need for advanced modeling techniques like EMT to understand system behavior and the potential of using IBR controls at the inverter level to improve system stability.

ractions with power electronic based devices (STATCOM, HVDC, wind) in close vicinity of generating stations in transmission system. Torsional interactions due to network resonance conditions: In addition to SSTI due to interactions with po...

AI summary The text discusses torsional interactions caused by network resonance conditions, particularly focusing on sub-synchronous resonance and its impact on thermal generators. It highlights risks to mechanical shaft-mass systems when natural frequencies align with sub-synchronous network resonant frequencies, potentially leading to unstable resonant conditions.

t condition. This condition can be avoided through careful consideration at the system planning stage or by adopting necessary system operating practices. 5.4.5 IBR Low Frequency Oscillations According to field results and detailed simulat...

AI summary The document discusses the potential for low-frequency oscillations caused by inverter-based resources (IBRs) in weak network areas, typically between 8 Hz and 12 Hz. These oscillations, though small in magnitude, are of concern due to visible flicker. The document references findings from Australia and CIGRE papers, emphasizing the need for NSPI to explore and model solutions such as SVC and STATCOM to address system strength issues.

plore and model thoroughly as they will have high IBR penetration and solutions for System Strength issues include SVC, STACOM and other dynamic equipment. 5.4.6 RoCoF The addition of IBR and the subsequent phasing out of conventional gene...

AI summary The document discusses the impact of increasing IBR (Inverter-Based Resources) on the system's Rate of Change of Frequency (RoCoF) in Nova Scotia, particularly as conventional generation is phased out. This could affect the stable operation of IBRs using grid-following technology and the ability of legacy plants to remain online during frequency events.

ted from the large manufacturing plants in Nova Scotia and plant models are under development to assess any adverse impact to the ability to start large motors via EMT study. 5.4.8 Transformer Inrush NERC technical report: “Integrating Inv...

AI summary The document discusses potential adverse impacts of large motor startups and transformer inrush currents on the Nova Scotia grid, particularly in weak grid areas. It highlights concerns about voltage dips and their effects on nearby plants, and outlines mitigation options for integrating renewable energy sources and IBR sites.

Nova Scotia grid. Some technologies are mainstream and well understood, some are emerging technologies and it remains to be seen how effective they will be. 6.1 IBR Control System Design Fault ride-through, control interactions, RoCoF cont...

AI summary The text discusses the integration of emerging technologies into the Nova Scotia grid, focusing on IBR control system design, fault ride-through, and the potential of wind energy converters to provide mechanical inertia. It also touches on grid following and grid forming inverters.

ally in addition to staying online. This approach would have an IBR to operate in “grid forming” mode or with novel control concepts such as “virtual synchronous machine emulation”. 35 2024 10-Year System Outlook Report NSUARB IR-15 Attach...

AI summary The document discusses the potential of grid-forming inverters (IBRs) to stabilize the power system by emulating traditional synchronous machines. It highlights research and real-world examples, such as the Australian National Energy Market, that support the use of grid-forming inverters in high-renewables grids to ensure system strength and stability.