Decoupling optimization of integrated energy system based on energy quality character

• Published in: Frontiers in Energy Vol. 12; no. 4; pp. 540 - 549
• Main Authors: MA, Shixi, SUN, Shengnan, WU, Hang, ZHOU, Dengji, ZHANG, Huisheng, WENG, Shilie
• Format: Journal Article
• Language: English
• Published: Beijing Higher Education Press 01.12.2018; Springer Nature B.V
• Subjects: Decoupling; Electric power generation; electric power system; Electricity; Energy; Energy dissipation; Energy loss; energy quality character; Energy Systems; Gas compressors; Gas-fired power plants; integrated energy system; Integrated energy systems; Natural gas; natural gas system; Nodes; optimization; Power plants; Research Article; Residential energy; Scheduling; optimization; integrated energy system; electric power system; natural gas system; energy quality character
• ISSN: 2095-1701; 2095-1698
• DOI: 10.1007/s11708-018-0597-4

Connections among multi-energy systems become increasingly closer with the extensive application of various energy equipment such as gas-fired power plants and electricity-driven gas compressor. Therefore, the integrated energy system has attracted much attention. This paper establishes a gas-electricity joint operation model, proposes a system evaluation index based on the energy quality character after considering the grade difference of the energy loss of the subsystem, and finds an optimal scheduling method for integrated energy systems. Besides, according to the typical load characteristics of commercial and residential users, the optimal scheduling analysis is applied to the integrated energy system composed of an IEEE 39 nodes power system and a 10 nodes natural gas system. The results prove the feasibility and effectiveness of the proposed method.