The energy transfer process of natural gas network(NGN)has remarkable dynamic characteristics.However,the model of the gas network dominated by partial differential equations(PDEs)is challenging to analyse due to its ...The energy transfer process of natural gas network(NGN)has remarkable dynamic characteristics.However,the model of the gas network dominated by partial differential equations(PDEs)is challenging to analyse due to its heterogeneous properties,high dimensionality,and significant non-linearity.To cope with the dynamic characteristics of the NGN effectively and accurately,the Schur complement-based dynamic flow calcu-lation method for the NGN is proposed in the paper.Firstly,a time-domain two-port model for the dynamic characteristics of the NGN is derived based on the finite dif-ference method in the Wendroff format.The PDEs are transformed into an easily solvable time-domain linear algebraic model while ensuring the accuracy of the computational results.To alleviate the computational burden,a numerical method based on the Schur complement strategy is then developed.By reducing the dimensions of the matrix equation,the computation speed can be dramatically improved.Finally,case an-alyses are carried out to emphasise the significance of consideration of the dynamic characteristics of NGNs and confirm the validity and precision of the developed approach.展开更多
Due to the rapid growth of China’s demands for energy resources, energy security hasbecome a more and more important issue in making future energy decisions. China’senergy policy is founded on the principle of “mul...Due to the rapid growth of China’s demands for energy resources, energy security hasbecome a more and more important issue in making future energy decisions. China’senergy policy is founded on the principle of “multiple energy supplies and imports”. Itwould be one of the best solutions if China could make use of its various advantages,attentively develop its multi-energy cooperation with other countries, and seek for acooperative program that is accessible to many sides such as China, Russia, Japan andSouth Korea. Nevertheless, under current circumstances, how to realize “multiple energysupply and import” is not only a focal point for China’s energy security but also one of thetricky issues for the Chinese government. In this paper, the author has put forward someviewpoints and policy suggestions on Sino-Russian energy cooperation and other geo-economic strategic problems.展开更多
基金National Natural Science Foundation of China,Grant/Award Numbers:52307130,U22A6007Shanxi Province Science Foundation for Youths,Grant/Award Number:202303021212058。
文摘The energy transfer process of natural gas network(NGN)has remarkable dynamic characteristics.However,the model of the gas network dominated by partial differential equations(PDEs)is challenging to analyse due to its heterogeneous properties,high dimensionality,and significant non-linearity.To cope with the dynamic characteristics of the NGN effectively and accurately,the Schur complement-based dynamic flow calcu-lation method for the NGN is proposed in the paper.Firstly,a time-domain two-port model for the dynamic characteristics of the NGN is derived based on the finite dif-ference method in the Wendroff format.The PDEs are transformed into an easily solvable time-domain linear algebraic model while ensuring the accuracy of the computational results.To alleviate the computational burden,a numerical method based on the Schur complement strategy is then developed.By reducing the dimensions of the matrix equation,the computation speed can be dramatically improved.Finally,case an-alyses are carried out to emphasise the significance of consideration of the dynamic characteristics of NGNs and confirm the validity and precision of the developed approach.
文摘Due to the rapid growth of China’s demands for energy resources, energy security hasbecome a more and more important issue in making future energy decisions. China’senergy policy is founded on the principle of “multiple energy supplies and imports”. Itwould be one of the best solutions if China could make use of its various advantages,attentively develop its multi-energy cooperation with other countries, and seek for acooperative program that is accessible to many sides such as China, Russia, Japan andSouth Korea. Nevertheless, under current circumstances, how to realize “multiple energysupply and import” is not only a focal point for China’s energy security but also one of thetricky issues for the Chinese government. In this paper, the author has put forward someviewpoints and policy suggestions on Sino-Russian energy cooperation and other geo-economic strategic problems.
