Optimal Allocation of Thermal-Electric Decoupling Systems Based on the National Economy by an Improved Conjugate Gradient Method

Shuang Rong, Weixing Li, Zhimin Li, Yong Sun and Taiyi Zheng
Additional contact information
Shuang Rong: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
Weixing Li: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
Zhimin Li: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
Yong Sun: State Grid Jilinsheng Electric Power Supply Company, Changchun 130021, China
Taiyi Zheng: State Grid Jilinsheng Electric Power Supply Company, Changchun 130021, China

Energies, 2015, vol. 9, issue 1, 1-21

Abstract: Aiming to relieve the large amount of wind power curtailment during the heating period in the North China region, a thermal-electric decoupling (TED) approach is proposed to both bring down the constraint of forced power output of combined heat and power plants and increase the electric load level during valley load times that assist the power grid in consuming more wind power. The operating principles of the thermal-electric decoupling approach is described, the mathematical model of its profits is developed, the constraint conditions of its operation are listed, also, an improved parallel conjugate gradient is utilized to bypass the saddle problem and accelerate the optimal speed. Numerical simulations are implemented and reveal an optimal allocation of TED which with a rated power of 280 MW and 185 MWh heat storage capacity are possible. This allocation of TED could bring approximately 16.9 billion Yuan of economic profit and consume more than 80% of the surplus wind energy which would be curtailed without the participation of TED. The results in this article verify the effectiveness of this method that could provide a referential guidance for thermal-electric decoupling system allocation in practice.

Keywords: wind power curtailment; combine heat and power; thermal-electric decoupling; improved parallel conjugate gradient (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/9/1/17/pdf (application/pdf)
https://www.mdpi.com/1996-1073/9/1/17/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:9:y:2015:i:1:p:17-:d:61417

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().