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Real-time subsidy based robust scheduling of the integrated power and gas system.
- Source :
-
Applied Energy . Feb2019, Vol. 236, p1158-1167. 10p. - Publication Year :
- 2019
-
Abstract
- Highlights • Real-time subsidy based scheduling for integrated power and gas system proposed. • Gaming between the power and gas system formulated as bi-level optimization. • Relationship between the dual variables and the regulation coefficients revealed. • Simulation with real-world data demonstrates the effectiveness of the proposed. Abstract In this work, a real-time subsidy based robust scheduling method for the integrated gas and power system is proposed. Bi-directional energy conversion, including the power-to-gas and gas-fired generation, is operated via dynamic variant price signals. The gaming between the electrical power system and the natural gas system is formulated in the bi-level optimization. The upper-level problem minimizes the operational cost, in which the real-time subsidy for power-to-gas and gas-fired units is obtained. The lower-level problem maximizes the profit for the power-to-gas and gas-fired units, in which the transient gas flow is introduced. In addition, in order to counter the uncertainties brought on by wind power, a real-time subsidy update strategy based on robust optimization is proposed to stimulate the regulation capabilities of the power-to-gas and gas-fired units. This bi-level optimization is reformulated as a mixed-integer quadratic programming problem using the Karush-Kuhn-Tucker optimization conditions. Simulation results show that the real-time subsidy scheduling can make power-to-gas and gas-fired units follow the system operator's preferences such as wind power accommodation, mitigation of unsupplied load, and relieving network congestion. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03062619
- Volume :
- 236
- Database :
- Academic Search Index
- Journal :
- Applied Energy
- Publication Type :
- Academic Journal
- Accession number :
- 134228091
- Full Text :
- https://doi.org/10.1016/j.apenergy.2018.12.054