Optimal subhourly electricity resource dispatch under multiple price signals with high renewable generation availability
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of Victoria, BC (Canada). Inst. for Integrated Energy Systems and Mechanical Engineering Dept.
- Univ. of Victoria, BC (Canada). Inst. for Integrated Energy Systems and Mechanical Engineering Dept.
This article proposes a system-wide optimal resource dispatch strategy that enables a shift from a primarily energy cost-based approach, to a strategy using simultaneous price signals for energy, power and ramping behavior. A formal method to compute the optimal sub-hourly power trajectory is derived for a system when the price of energy and ramping are both significant. Optimal control functions are obtained in both time and frequency domains, and a discrete-time solution suitable for periodic feedback control systems is presented. The method is applied to North America Western Interconnection for the planning year 2024, and it is shown that an optimal dispatch strategy that simultaneously considers both the cost of energy and the cost of ramping leads to significant cost savings in systems with high levels of renewable generation: the savings exceed 25% of the total system operating cost for a 50% renewables scenario.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- California Energy Commission; USDOE; University of Victoria
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1425624
- Journal Information:
- Applied Energy, Journal Name: Applied Energy Journal Issue: C Vol. 213; ISSN 0306-2619
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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