How Can Probabilistic Solar Power Forecasts Be Used to Lower Costs and Improve Reliability in Power Spot Markets? A Review and Application to Flexiramp Requirements
Journal Article
·
· IEEE Open Access Journal of Power and Energy
- Johns Hopkins Univ., Baltimore, MD (United States). Robert O'Connor Sustainable Energy Inst.
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Univ. of Texas at Dallas, Richardson, TX (United States)
- IBM Thomas J. Watson Center, Yorktown Heights, NY (United States)
Net load uncertainty in electricity spot markets is rapidly growing. There are five general approaches by which system operators and market participants can use probabilistic forecasts of wind, solar, and load to help manage this uncertainty. These include operator situation awareness, resource risk hedging, reserves procurement, definition of contingencies, and explicit stochastic optimization. We review these approaches, and then provide a case study in which a method for using probabilistic solar forecasts to define needs for reserves is developed and evaluated. The case study has three parts. First, we describe building blocks for enhancing the Watt-Sun solar forecasting system to produce probabilistic irradiance and power forecasts. Second, relationships between Watt-Sun forecasts for multiple sites in California and the system's need for flexible ramp capability (flexiramp) are defined by machine learning and statistical methods. Third, the performance of present methods to defining flexiramp requirements, which are not conditioned on weather and renewables forecasts, is compared with that of probabilistic solar forecast-based requirements, using a multi-timescale production costing model with an 1820-bus representation of the WECC power system. Significant potential savings in fuel and flexiramp procurement costs from using solar-informed reserve requirements are found.
- Research Organization:
- Johns Hopkins University, Baltimore, MD (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- Grant/Contract Number:
- AC36-08GO28308; EE0008215
- OSTI ID:
- 1903776
- Alternate ID(s):
- OSTI ID: 1991271
- Report Number(s):
- NREL/JA-6A20-84782; MainId:85555; UUID:089357ae-fc52-4dce-9b37-c84db1f872d3; MainAdminID:68247
- Journal Information:
- IEEE Open Access Journal of Power and Energy, Journal Name: IEEE Open Access Journal of Power and Energy Vol. 9; ISSN 2687-7910
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
24 POWER TRANSMISSION AND DISTRIBUTION
29 ENERGY PLANNING, POLICY, AND ECONOMY
97 MATHEMATICS AND COMPUTING
California
Power markets
probabilistic solar forecasts
renewable energy
operating reserves
California
flexiramp
contingency management
costs
flexiramp
operating reserves
power markets
probabilistic logic
probabilistic solar forecasts
procurement
renewable energy
renewable energy sources
schedules
uncertainty
24 POWER TRANSMISSION AND DISTRIBUTION
29 ENERGY PLANNING, POLICY, AND ECONOMY
97 MATHEMATICS AND COMPUTING
California
Power markets
probabilistic solar forecasts
renewable energy
operating reserves
California
flexiramp
contingency management
costs
flexiramp
operating reserves
power markets
probabilistic logic
probabilistic solar forecasts
procurement
renewable energy
renewable energy sources
schedules
uncertainty