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

作　　者：Mengting Zhu Chengsi Xu Shufeng Dong Kunjie Tang Chenghong Gu 

机构地区：[1]College of Electrical and Engineering,Zhejiang University,Zhejiang,China [2]The Department of Electronic and Electrical Engineering,University of Bath,Bath,BA27AY,UK

出　　处：《Protection and Control of Modern Power Systems》2021年第1期65-76,共12页现代电力系统保护与控制（英文）

基　　金：supported by National Natural Science Foundation of China(52077193).

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.

关 键 词：Integrated energy system Integrated multi-energy flow calculation NEWTON-RAPHSON COMPRESSOR Per unit value and nominal value 

分 类 号：TL5[核科学技术—核技术及应用]