N-2NSPI (NSEB) RIRs 1-20 - Redacted
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CI C0032664 – Energy Control Centre – Optimization Tools (NSEB M12591) NSPI Responses to NSEB Information Requests 1 Request IR-1: 28 generation sources such as wind and solar, and dispatchable grid-supporting 29 technologies such as Batte...
AI summary The document discusses the implementation of the System Dispatch Dashboard (SDD) by NS Power to provide Market Participants with real-time visibility into grid conditions, enhancing transparency and decision-making. The SDD is part of the Energy Control Centre's optimization tools, aimed at improving grid management with renewable and variable generation sources.
NON-CONFIDENTIAL 1 workflows for the sharing of information on the current state of the system. Use of the SDD by 2 System Operators to automate manual tasks will reduce cognitive load and improve situational 3 awareness and allow more att...
AI summary The document discusses the need for improved information sharing workflows and the implementation of the System Data Dashboard (SDD) and Outage Request Platform (ORP) to enhance system reliability and manage increased complexity from renewable energy integration and grid-enhancing technologies.
NON-CONFIDENTIAL ID Recommendation Deliverables & Technology short gas positions. This flexibility could address the inherent variances of timing in terms of when the gas market trades and the electricity market scheduling for the Day Ahea...
AI summary The document outlines recommendations related to gas market flexibility, real-time system optimization, and the integration of intermittent renewable resources. It emphasizes the need for Nova Scotia Power to enhance its analytical tools and IT platforms to support real-time system status and dispatch requirements.
C0032664 NSEB IR-5 Attachment 1 Page 2 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY
AI summary The document is a final dispatch study conducted by NS Power, focusing on electricity generation and grid operations. It includes technical analysis related to power system reliability and performance, likely involving dispatch strategies and grid management practices.
TABLE OF FIGURES Figure 1: Tufts Cove Unit Overview 25 Figure 2: Ramp Rates of NS Power's Thermal Generating Units 26 Figure 3: Tufts Cove Unit Availability and DAFOR 27 Figure 4: Daily Modeling Timeline 33 Figure 5: Wreck Cove Operating P...
AI summary The document contains a table of figures and tables related to Nova Scotia Power's generating units, system demand, and dispatch optimization processes. It includes figures on system load, generation capacity, and historical data, as well as a table on net system peak demand and installed capacity by generation type.
3. Uniqueness of Nova Scotia's System Nova Scotia's system is quite unique in many ways and this uniqueness defines some of the challenges that give rise to the need for this Dispatch Study. Some of the features that make the Nova Scotia s...
AI summary Nova Scotia's electricity system is unique due to limited interconnectivity and a transition from legacy thermal generation to increasing renewable resources. The system faces challenges related to this shift, as highlighted in the Dispatch Study. Renewable energy now makes up over 35% of installed capacity and is expected to grow further.
C0032664 NSEB IR-5 Attachment 1 Page 11 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY bulk power system. In some systems (such as ISO-NE), it is the system operator's Control Center that co-optimizes the d...
AI summary This section discusses the optimization capabilities of Nova Scotia Power's Control Center and Marketing Desk, highlighting how the system operator leverages the Marketing Desk's analytical capabilities for optimized dispatch schedules, which are then manually adjusted by the Control Center to reflect real-time conditions. It also notes that increased decarbonization and intermittent energy resources may necessitate the Control Center to take on more optimization responsibilities.
C0032664 NSEB IR-5 Attachment 1 Page 12 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY Concentric conducted several interviews and reviewed numerous documents, including documents that informed the 2018-201...
AI summary Concentric Energy Advisors evaluated NS Power's dispatch practices and found them aligned with industry best practices. The report recommends upgrading analytical tools and communication platforms to handle increased complexity from renewable integration. Current practices are deemed appropriate, though future investments may be necessary.
C0032664 NSEB IR-5 Attachment 1 Page 13 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY or optimization tools are generating sub-optimal dispatch results. Based on Concentric's findings, these investments al...
AI summary The document discusses NS Power's dispatch study, emphasizing the need for a portfolio-based evaluation of dispatch performance and the potential benefits of automation in optimizing processes. It highlights the importance of considering both energy output and ancillary services in evaluating asset performance.
C0032664 NSEB IR-5 Attachment 1 Page 15 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY - O10: As the portfolio grows in complexity with the retirement of coal generation and the addition of significant volu...
AI summary The document outlines challenges and considerations in real-time dispatch optimization as the energy portfolio becomes more complex with the integration of renewable resources and the retirement of coal generation. It emphasizes the need for dynamic system updates, the role of the Control Center, and limitations of current optimization tools and communication processes.
b. Recommendations R1: Investigate the creation of an IT Platform similar to other jurisdictions where the information about the system is shared live so the Marketing Group can update its Dispatch
AI summary The recommendation suggests investigating the creation of an IT platform, similar to those in other jurisdictions, to enable the live sharing of system information so that the Marketing Group can update its Dispatch.
C0032664 NSEB IR-5 Attachment 1 Page 19 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY 1. Limited Interconnectivity. When compared to other neighboring electric systems such as those in the Northeastern par...
AI summary Nova Scotia's electricity system is characterized by limited interconnectivity compared to other systems in North America and is transitioning from a legacy thermal generation model to one incorporating more renewable and intermittent resources. NS Power operates as a vertically integrated utility, responsible for most of the province's generation, transmission, and distribution.
C0032664 NSEB IR-5 Attachment 1 Page 20 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY large-scale coal-fired assets. It also implies that thermal resources with quick ramp-up capabilities that had traditio...
AI summary The document discusses the evolving role of thermal resources in supporting renewable energy integration and highlights differences in dispatch optimization between the Marketing Desk and the Control Center at NS Power. It notes that the Marketing Desk's data lags behind real-time data used by the Control Center, affecting the accuracy of economic dispatch within short timeframes.
3.5.1 Historical Over the last decade, the use of Tufts Cove has changed with the evolution of NS Power's overall generation portfolio. As documented in NS Power's IRP the overall generation from the plant has declined over time; however,...
AI summary Over the last decade, Tufts Cove's role in NS Power's generation portfolio has evolved from a baseload facility to a flexible resource supporting renewable intermittency. Units 4, 5, and 6 are particularly important for their ramping capabilities and ancillary services during off-peak hours.
b. Recommendations - R1: Investigate the creation of an IT Platform similar to other jurisdictions where the information about the system is shared live so the Marketing Group can update its Dispatch Schedule expectations. Such an IT Platf...
AI summary The recommendations focus on improving IT systems for energy management, suggesting the creation of an IT platform similar to PJM's Data Viewer and updating PortOps® with real-time data for better system integration and optimization as system complexity increases.
C0032664 NSEB IR-5 Attachment 1 Page 41 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY Flowage, Gisbourne Lake, MacMillan Lake, and Chéticamp Lake. All of these lakes are linked by canals and tunnels and gu...
AI summary The NS Power Dispatch Study describes the Wreck Cove hydroelectric station's use of natural topography and water systems to generate renewable energy. It highlights the station's role in Nova Scotia's decarbonization efforts and its importance in meeting the province's 80% renewable energy target by 2030.
C0032664 NSEB IR-5 Attachment 1 Page 44 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY forecast precipitation, forecast temperature, freezing and melting conditions and expectations, and other operational r...
AI summary The document discusses the operational challenges faced by Wreck Cove due to unpredictable weather patterns in Nova Scotia, which impact water levels and facility operations. It also outlines how GHG emission costs are integrated into the energy optimization process through a shadow price mechanism used in dispatch planning.
C0032664 NSEB IR-5 Attachment 1 Page 51 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Figure 8: Historical Peak System Demand79 Figure 9: Net System Requirement with Future DSM Program Effects80 79 2021 10- Year System Outlook Study, J...
AI summary The document includes figures related to historical peak system demand and net system requirements with future DSM program effects. It references studies from the 2021 10-Year System Outlook Study.
Table 1: Historical and Forecasted Net System Peak Demand 81 Year Interruptible Contribution to Peak (MW) Demand Response (reduction in Firm Peak only, MW) Firm Contribution to Peak (MW) System Peak (MW) Growth (%) 2011 265 - 1,903 2,168 2...
AI summary Table 1 presents historical and forecasted net system peak demand data from 2011 to 2031, showing contributions from interruptible loads, demand response, and firm loads, with system peak demand and growth percentages for each year.
C0032664 NSEB IR-5 Attachment 1 Page 57 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY The trend in regions with a high penetration of renewable resources, such as the California Independent System Operator...
AI summary The document discusses the need for NS Power to improve dispatch efficiency, particularly with increasing renewable energy integration. It highlights practices from the California Independent System Operator (CAISO), such as enhanced intraday scheduling and real-time dispatch, to improve system reliability and economic efficiency as intermittent resources become more prevalent.
C0032664 NSEB IR-5 Attachment 1 Page 61 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY - The New Brunswick Power Corporation System Operator ("NBPSO") initiates activation of Operating Reserve, or either pa...
AI summary Nova Scotia Power's dispatch process relies heavily on the Marketing Desk's optimized economic dispatch solution, which is then adjusted by the Control Center based on real-time conditions. The system is unique due to its isolation and the dominance of a single market participant. The Control Center's economic dispatch tools are less comprehensive than those used by the Marketing Desk and System Planning.
C0032664 NSEB IR-5 Attachment 1 Page 64 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY Real time economic optimization of ancillary services is performed by the System Operator referring to the economic dis...
AI summary The document discusses the real-time economic optimization of ancillary services by the System Operator using data from the Control Center and Marketing Desk. It highlights the current reliance on coal-fired and natural gas units for ancillary support and suggests future reliance on wind with AGC, transmission lines, and smart grid initiatives. The communication between departments is noted as being manual, with a recommendation for an IT platform to standardize and automate information sharing.
C0032664 NSEB IR-5 Attachment 1 Page 67 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY PortOps® to support their economic dispatch decisions. Both PLEXOS® and PortOps® explicitly model ancillary services wi...
AI summary The document discusses Nova Scotia Power's use of PortOps® and PLEXOS® for economic dispatch and resource planning, emphasizing their role in optimizing energy and ancillary services. As renewable energy increases, the difference between Day Ahead, Intraday, and Real Time dispatch is expected to grow, with Wreck Cove and Tufts Cove becoming swing units. Ancillary services will need to be valued in future contracts.
b. Recommendations R1: Investigate the creation of an IT Platform similar to other jurisdictions where the information about the system is shared live so the Marketing Group can update its Dispatch
AI summary The recommendation suggests investigating the creation of an IT platform similar to those in other jurisdictions to enable real-time sharing of system information, allowing the Marketing Group to update its dispatch processes more effectively.
5.9. Opportunities for Alignment of Dispatch, Procurement and Resource Planning Models As stated in 5.7, in a vertically integrated system, which is largely the situation in Nova Scotia, and an organized wholesale market of the type that h...
AI summary This section discusses the alignment of dispatch, procurement, and resource planning models in vertically integrated systems like Nova Scotia's. It highlights the role of system operators in dispatch decisions based on cost and reliability, and the impact of 'out-of-market' payments on efficiency and investment incentives. Unit Commitment and Economic Dispatch are central to power system operations, with objectives varying between vertically integrated utilities and market environments.
C0032664 NSEB IR-5 Attachment 1 Page 71 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY more accurate the forecast is. Slow start units must be scheduled many hours before they can generate electricity. In c...
AI summary The document discusses the dispatch process and unit commitment in power system operations, emphasizing the differences between slow and fast start units, the use of operating reserves to manage uncertainty, and the role of NS Power's Marketing Desk and NSPSO in scheduling and real-time dispatch.
C0032664 NSEB IR-5 Attachment 1 Page 72 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY Control the flows on interconnecting lines with neighboring systems in accordance with established schedules.113 The No...
AI summary The document discusses the requirements of the Nova Scotia Power System for ancillary services and grid reliability, referencing the PortOps® model and practices in the U.S. and California, particularly the CAISO's efforts to improve day-ahead market scheduling and introduce new products to manage real-time ramping needs and uncertainty.
a. Observations - O1: The Marketing Desk optimizes the dispatch schedule to solve for the economics of the dispatch of the facilities for energy and ancillary services that yield the smallest cost possible. The Control Center reassesses an...
AI summary The document outlines the optimization processes of the Marketing Desk and Control Center in managing energy and ancillary services. It highlights the differences in market dynamics between electricity and natural gas, the role of fuel switching at Tufts Cove, and the use of tools like PortOps® and PLEXOS® in economic dispatch and ancillary service modeling to minimize system costs.
a. Observations O16: For an optimum dispatch of facilities in the Real Time markets, the Control Center cannot simply rely on the schedule from the Marketing Desk that may be stale by at least two hours. As more intermittent non-dispatchab...
AI summary The Control Center cannot rely on outdated schedules from the Marketing Desk for optimal Real Time market dispatch, especially as more intermittent renewable resources are integrated, increasing dispatch complexity beyond current capabilities.
C0032664 NSEB IR-5 Attachment 1 Page 79 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL for reliability purposes. When a capacity scarcity event occurs and generation and import options have been exhausted, the System Operator may...
AI summary The document discusses NS Power's use of demand response mechanisms, such as the ELIADC and CPP tariffs, to manage load for reliability and economic purposes. These mechanisms allow for load reduction during capacity scarcity events and peak periods, with the System Operator optimizing dispatch to meet reserve requirements and serve firm load.
C0032664 NSEB IR-5 Attachment 1 Page 81 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) FINAL NS POWER DISPATCH STUDY In other ISOs, the system operator is responsible for maintaining minute by-minute system security by dispatching resou...
AI summary The document discusses how system operators in other ISOs use a least-cost, bid-based optimization algorithm to maintain system security and dispatch resources, including intermittent ones like wind plants. Wind plant operators historically did not participate in redispatch, requiring manual intervention by system operators, which was less efficient.
6.5 Observations and Recommendations As identified in section 5.7 above, the Control Center does not have the analytical capabilities for optimization during the Real Time market and largely takes the solution optimized by the Marketing De...
AI summary The Control Center lacks the analytical capabilities needed for optimization during the Real Time market and relies on the Marketing Desk's outdated solution. As system complexity increases, the Control Center will need its own tools to re-optimize for the Real-Time market and co-optimize energy and ancillary requirements.
a. Observations - O11: Optimization of Real Time dispatch by the Control Center leverages the economic dispatch from the Marketing Desk, experience of operators in the Control Center and the Real Time Economic Dispatch Tool within SCADA. -...
AI summary The text outlines observations about the optimization of real-time dispatch, communication between departments, and the logging of decisions in the Control Center. It emphasizes the reliance on human interaction and the unique knowledge of the Control Center operator regarding system status.
7.1 Context Renewable energy procurements and grid modernization programs are becoming key features of the transition to a cleaner grid. Utilities are pursuing a range of solutions, including grid-scale investments in renewables and demand...
AI summary The transition to a cleaner grid involves renewable energy procurements and grid modernization. Utilities are investing in renewables and demand-side management, while managing challenges from intermittent generation and the retirement of baseload thermal generation. The distribution grid is evolving into a platform with advanced technologies to support system reliability and economic dispatch.
7.2 Smart Grid Nova Scotia The Smart Grid Nova Scotia Project, approved by the NSUARB on May 7, 2020,141 will result in the construction and connection of a 2 MW community solar garden, three commercial deployments of rooftop solar and bat...
AI summary The Smart Grid Nova Scotia Project, approved by the NSUARB in 2020, involves deploying 2 MW of community solar, rooftop solar with battery storage, and smart EV chargers connected to an Energy System Platform. The project aims to evaluate the feasibility of large-scale DERMS deployment, focusing on grid reliability, economic benefits, and cost-effectiveness.
7.4 Dynamic System Inertia Constraints to Future Levels of Wind Resources Inertia, traditionally provided by large rotating generators, plays an important role in maintaining grid reliability. The stored energy in these generators can temp...
AI summary This section discusses how the displacement of conventional fossil-based generation by inverter-based systems like wind and solar reduces grid inertia, potentially affecting system reliability. It notes that while this reduces inertia, it may also reduce the inertia needed, and solutions like Fast Frequency Response (FFR) help mitigate these issues. NS Power is examining these constraints as it expands renewable generation.
C0032664 NSEB IR-5 Attachment 1 Page 91 of 92 REDACTED (CONFIDENTIAL INFORMATION REMOVED) NS POWER DISPATCH STUDY The most challenging issues are its ability to export excess power to neighboring systems via the existing ties and to surviv...
AI summary The document discusses challenges related to Nova Scotia Power's ability to manage high renewable energy penetration, including the need for reliability studies, export of excess power, and reliance on ancillary services. It highlights the potential for wind generation to meet all load during summer and the need for incremental reserves due to system uncertainty.
C0032664 NSEB IR-5 Attachment 3 Page 2 of 9 REDACTED (CONFIDENTIAL INFORMATION REMOVED) 374 out of 2,292 MWs of installed capacity. Given new provincial legislation, the generation capacity is expected to evolve to accelerate thermal retir...
AI summary The document discusses the evolution of Nova Scotia's power generation capacity, including the retirement of thermal plants and increased reliance on renewables. It highlights the need for NS Power to manage a more complex system with higher renewable integration and reduced coal use, suggesting the need for independent analytical capabilities to optimize dispatch in real-time.
For instance, the column labeled "0" identifies a scenario where the estimated wind speed hours in advance will not change by the time the NSPSO dispatches the assets. The Table also shows how the expectation of wind may change several min...
AI summary The text discusses the intermittency of wind generation and its impact on the NSPSO's dispatch decisions. It highlights the potential for significant wind speed drops and the need for additional generation or transmission capacity. The Dispatch Study found no economic harm to customers with current operations but warns of reliability issues if wind generation is insufficient.
REDACTED 1 Request IR-9: 17 development of contingency plans to ensure business continuity should the system 18 optimization tools become unavailable. The level of business continuity plan (BCP) 19 developed depends on the criticality of t...
AI summary The text discusses the development of business continuity plans (BCP) for the Energy Control Centre (ECC) Portfolio Optimizer, which is currently in flight. In the event of tool unavailability, manual processes would be used for economic optimization and dispatch, relying on Day-Ahead and Intraday plans from NS Power Marketing and operational experience.
PARTIALLY CONFIDENTIAL Item Details SCADA Equipment Wall Supports Build and reinforce walls to house SCADA equipment Training room wiring Add electrical outlets and data ports in training room Data Analysis Contractor Additional support fo...
AI summary The document outlines various technical and consulting resources required for a project involving SCADA equipment, data analysis, engineering services, business intelligence development, and system integration. It includes roles such as Business Analysts, SME Leads, Project Managers, GIS SMEs, and Technology Integration Specialists.
Item Description System Operator Training Solution This is a training database which enables import and storage of training materials for formatted scheduling, look ups, delivery platform, tracking and reporting of training requirements an...
AI summary The text describes several software solutions used by the System Operator, including a training database, an Outage Request solution, an Economic Dispatch Optimization Solution (ECCPO), and a System Dispatch Dashboard (SDD). These tools are designed to enhance training, manage outages, optimize dispatch, and provide real-time data for Market Participants.