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The economic and environmental impact of power to hydrogen/power to methane facilities on hybrid power-natural gas energy systems |
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| Affiliation: | 1. School of Mechanical Electronic and Information Engineering, China University of Mining & Technology-Beijing, Beijing, China;2. School of Engineering, University of Edinburgh, Edinburgh, UK;1. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, China;2. School of Energy and Power Engineering, Wuhan University of Technology, Wuhan, 430063, China;3. School of Mechanical & Mining Engineering, The University of Queensland, QLD, 4072, Australia;1. School of Energy Resources, China University of Geosciences, Beijing, 100083, PR China;2. Sinopec Southwest Oil and Gas Branch of the Gas Plant, Chongqing, 402160, PR China;1. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China;2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi''an Jiaotong University, Xi''an, 710049, PR China |
| Abstract: | The curtailment of renewable energy would be reduced by converting it to hydrogen or methane using power to hydrogen (P2H) facilities or power to methane (P2M) facilities. Both hydrogen and methane can be injected into the existing natural gas system which has significant potential to unlock the inherent flexibility of integrated energy systems. The coordinated operation strategy of the hybrid power-natural gas energy systems considering P2H and P2M is proposed aiming to minimize the operational cost. In addition, a method to calculate the higher heating value of hydrogen-natural gas mixture is presented along with a strategy for handling the constraints of hydrogen mixture level limits. The simulation results of three case studies demonstrate the economic and environmental benefits of P2H/P2M in terms of reductions in cost, CO2 emissions and wind power curtailment. The differences in benefits between P2H and P2M have also been compared and analyzed. |
| Keywords: | Power to hydrogen (P2H) Power to methane (P2M) Hydrogen energy Hybrid power-natural gas energy systems Renewable energy |
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