| Citation:Mengting Zhu,Chengsi Xu,Shufeng Dong,Kunjie Tang,Chenghong Gu.An integrated multi-energy flow calculationmethod for electricity-gas-thermalintegrated energy systems[J].Protection and Control of Modern Power Systems,2021,V6(1):65-76[Copy] |
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| Abstract: |
| 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. |
| Key words: Integrated energy system, Integrated multi-energy flow calculation, Newton-Raphson, Compressor, Per
unit value and nominal value |
| DOI：10.1186/s41601-021-00182-2 |
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| Fund: |
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