An Improved Sequential Energy Flow Analysis Method Based on Multiple Balance Nodes in Gas-Electricity Interconnection Systems

Gas-electric energy interconnection is one of the main forms of energy interconnection in the future. Energy flow analysis is the basis for its characteristic analysis and optimization operation. It is not in line with the actual situation that prescribed output of the gas turbine and neglected dual constraint of the gas-electric in the sequential energy flow analysis. In addition, considering the role of multi-balance nodes and the computational requirements of the sequential algorithm, this paper proposes an improved sequential energy flow analysis method based on multi-balance nodes in gas-electricity interconnection systems. In this paper, the gas flow in the gas network with multiple gas sources, electric compressors, and gas compressors is analyzed in detail, and the sequential algorithm is combined with the multi-balance nodes equation in the form of injected current to analyze the gas-electric interconnect system. Then, by programming the gas-electric interconnection example, comparing with the results of unified algorithm and traditional sequential algorithm, it is verified that the multi-balance nodes algorithm is correct and effective.