Reactive Power Optimization Of Deepwater Semi-submersible Production Platform Integrated With New Energy

Traditional offshore platform power supply devices are mainly gas turbine or diesel generator,which will cause energy consumption and environmental pollution.The access of new energy can provide a powerful supplement to the offshore platform power grid,alleviate the energy crisis and solve the increasingly serious environmental pollution problem,but it will also bring new challenges to the planning,operation and control of the platform power grid.Reactive power optimization is an important means to ensure the safe and stable operation of power grid and improve the economy.By optimizing the reactive power of the offshore platform power grid containing new energy,it can not only effectively reduce the active power loss,but also improve the power quality.Therefore,it is necessary to conduct in-depth research on the reactive power optimization problem of the offshore platforms with new energy.Firstly,this paper gives the working principle of diesel generator set,photovoltaic power generation system and wind power generation system respectively,builds the corresponding simulation model,and analyzes the correctness of each model.Specifically,the simulation analysis of each model includes the performance analysis of speed and voltage regulation of diesel generator set,the transient characteristics analysis of photovoltaic power generation system when the illumination intensity changes suddenly,and the transient characteristics analysis of the doubly-fed wind power generation system when the wind speed changes.Aiming at the practical application of the deep-water semi-submersible production platform,the new energy is connected into it and the stability analysis is performed.The feasibility of connecting the new energy to the deep-water semi-submersible production platform is verified by the simulation results.Secondly,the reactive power optimization problem of the deep-water semi-submersible production platform with new energy is explored,and the reactive power output characteristics of wind power generation system and photovoltaic power generation system are introduced respectively.Under the condition of given active power and other parameters,the corresponding reactive power regulation range can be determined,which can be used as the regulation and control measures of reactive power optimization.At the same time,the location of new energy grid connection is selected,which lays the foundation for reactive power optimization.Finally,the basic principles and characteristics of particle swarm optimization and Taguchi method are described.The parameters and populations of particle swarm optimization are optimized by Taguchi method,which improves the defect that particle swarm optimization is easy to fall into local optimal solution.A mathematical model of reactive power optimization with minimum active power loss and voltage deviation as objective function is established.The proposed algorithm is applied to IEEE30 bus system and platform power system containing new energy for reactive power optimization.The results show that the proposed algorithm is effective and superior,which can effectively reduce the active power loss and improve the voltage quality.