An integrated multi-energy flow calculation method for electricity-gas-thermal integrated energy systems

Protection and Control of Modern Power Systems

Shufeng Dong¹  Chengsi Xu¹  Kunjie Tang¹  Mengting Zhu¹  Chenghong Gu² 

[1] College of Electrical and Engineering, Zhejiang University, Zhejiang, China;The Department of Electronic and Electrical Engineering, University of Bath, BA2 7AY, Bath, UK;

关键词: Integrated energy system;    Integrated multi-energy flow calculation;    Newton-Raphson;    Compressor;    Per unit value and nominal value;   

DOI  :  10.1186/s41601-021-00182-2

来源: Springer

【 摘 要 】

The modeling and multi-energy flow calculation of an integrated energy system (IES) are the bases of its operation and planning. This paper establishes the models of various energy sub-systems and the coupling equipment for an electricity-gas-thermal IES, and an integrated multi-energy flow calculation model of the IES is constructed. A simplified calculation method for the compressor model in a natural gas network, one which is not included in a loop and works in constant compression ratio mode, is also proposed based on the concept of model reduction. In addition, a numerical conversion method for dealing with the conflict between nominal value and per unit value in the multi-energy flow calculation of IES is described. A case study is given to verify the correctness and speed of the proposed method, and the electricity-gas-thermal coupling interaction characteristics among sub-systems are studied.

【 授权许可】

CC BY