| With the gradual depletion of traditional fossil energy and the increasing demand for energy by users,the deepening reform of the energy market is imminent.The construction of a complete and integrated energy system is an important means of improving energy efficiency and achieving low-carbon sustainable development under the background of a low-carbon economy.The integrated energy system changes the traditional energy system’s independent operation and separate planning model,achieving the goal of unified planning,coordinated scheduling and mutual complementarity of different energy systems.Advanced information and communication networks serve as an important carrier for information collection and transmission in the integrated energy system and have made certain contributions to achieving supply-demand balance.In order to ensure the reliability and stability of information transmission,cooperative relay technology,as one of the advanced communication technologies,can be applied to the communication network of the integrated energy system.By adopting cooperative relay technology,the communication quality of the integrated energy system has been improved to a certain extent.However,there are still problems such as unreasonable allocation of communication network resources,unstable energy supply of relay base stations in remote areas or adverse environmental conditions.In response to these issues,the following research elements are carried out in the context of the electricity-gas integrated energy system communication network:Firstly,cooperative relaying technology was introduced to assist the communication network in the transmission of information,thereby reducing packet loss rates and load tracking deviations.In order to reduce the costs of utilities and increase the profit of the natural gas company,the unmitigated load tracking deviations in the system are partially compensated by the natural gas company’s Gas to Power(G2P)and the remainder by Automatic Generation Control(AGC)services.A two-tier game model between the utility,the telecom operator and the natural gas company is then developed to rationalise the allocation of communication network resources and maximise the interests of each player in the game.The game model is solved by backward induction and iteration algorithm.Simulation results show that this method can achieve reasonable allocation of communication network resources while reducing the costs of utilities and increasing the profit of telecom operator and natural gas company.Secondly,a utility cost model was constructed based on the statistical analysis method of direct load control error,and the load tracking deviations present in the system were jointly compensated by AGC and G2 P services.Energy harvesting technology was applied to assist the normal operation of the relay base station and improve the quality of information transmission in the communication network.In order to ensure the reliability of information transmission in the communication network,interruption probability constraint was also considered as a constraint condition in this thesis.In addition,a two-level game optimisation model between the utility,the relay base station and the natural gas company is developed in order to optimise the energy split ratio of the relay base station,reduce the costs of utilities and increase the profit of the natural gas company.The game model is finally solved by backward induction and Lagrange multiplier method.Simulation results show that energy harvesting technology can effectively improve the information transmission rate of the communication network,reduce the costs of utilities,and increase the profit of the natural gas company. |
