Research On Planning And Energy Management Strategy Of Offshore Floating Generation System

With the development of the economy and society,the demand for energy is getting bigger and bigger,which not only strengthens the development of mainland resources,but also gradually turns its attention to the ocean.Therefore,the development and utilization of the ocean has gradually increased in recent years.In the process of utilizing marine resources,the offshore platform as an indispensable operational form undertakes important production and manufacturing tasks,and is also affected by the uncertain marine environment at all times,which will affect the output and subsequent power dispatching process of the renewable energy power generation equipment.Therefore,providing an adequate and stable power supply to the platform has also become an important research task.In this paper,considering the randomness and volatility of the marine environment,the planning and energy management control strategies of the offshore floating power generation system are studied.The specific contents are as follows:Firstly,this paper introduces the overall composition of the offshore floating power generation system.Considering the differences between the marine environment and the terrestrial environment,the characteristics of each component of the power system and the selection requirements are analyzed,including wind power generation units and photovoltaic power generation unit,the wave energy power generation unit,the energy storage unit,the gas turbine power generation unit,the load unit,and the establishment of the mathematical model are completed.The motion state of the wind turbine under the action of wind and current is studied in detail,including the motion response of the ocean platform and wind turbine under the sway condition,and the mechanism model is simulated and analyzed.Secondly,considering the particularity of the offshore floating power generation system,the planning of the renewable energy generation unit and energy storage unit on the offshore platform are analyzed by the multi-scene technology.By considering the prediction error and the normal distribution function obeyed of renewable energy and load,the Latin hypercube sampling method is used to complete the scene generation.Then the K-means clustering method is used to reduce the number of scenes.Based on the reduced scene,the planning model of the power system is established and solved by the optimization method ofmulti-objective particle swarm.In order to verify the impact of the randomness model on the overall power system planning,a numerical example is used to simulate the whole process.Thirdly,in the scheduling process of the offshore floating power generation system,due to the randomness of the supply and demand,the energy scheduling modeling of the power system is completed based on the model predictive control method.The two-stage energy distribution and feedback correction of the power system can be realized by the pre-distribution link and the pre-time dispatching link in the model predictive control,which can restrain the randomness and volatility of the offshore floating power generation system.The scheduling model is solved using the yalmip-based CPLEX toolbox,and the simulations of the examples presented in this chapter are simulated to verify the applicability of this scheduling method.Finally,considering the limitations of the space and time for the independent offshore platform,this chapter studies the combined energy supply system of the multi-offshore floating power generation system.Through the analysis of the cooperation relationship between the load center platform and the multi-resource enrichment platform,the economy and reliability are taken as the objective functions,the double-layer programming model is built which the inner layer considers the transport capacity and the outer layer considers the production capacity of the offshore platform.The planning model realizes the displacement of the uncontrollable output in time and space and maintains the normal operation of the offshore floating offshore platform group.The rationality and feasibility of the relevant model are verified by an example.