Research On Integrated Power System Of Offshore Renewable Energy Based On Floating Nuclear Power Plant

Internationally,the issue of energy has been closely watched,and many countries have conducted research on energy development and utilization.At the time when the technology of onshore nuclear power plants has matured,scientists have set their sights on the vast ocean.The floating nuclear power plants on the sea provide convenience for the full exploitation and utilization of marine resources,overcome the problem of energy supply in the open sea,and provide power for large-scale industrial projects,coastal towns,offshore oil and gas platforms,and island reef development.From the perspective of protecting and saving traditional energy sources,renewable energy sources such as solar energy and wind energy have been the focus of attention.Combining renewable energy with floating nuclear power plants makes full use of green energy,which can increase power generation,achieve energy conservation and emission reduction,and renewable energy power generation systems can also serve as auxiliary emergency power sources for floating nuclear power plants,making floating nuclear power plants more secure.This article describes the background and significance of the topic selection firstly,summarizes the research and development status of floating nuclear power plants and renewable energy power generation technologies at home and abroad,and analyzes the advantages and feasibility of offshore renewable energy power generation systems based on floating nuclear power plants.Secondly,the working principles and mathematical models of various components of the offshore renewable energy integrated power system based on floating nuclear power plants are studied,including turbo-generator unit,photovoltaic power generation system,wind power generation system,batteriey and emergency diesel generator set.The photovoltaic power generation system includes photovoltaic cells,maximum power tracking control and grid connection.The wind power generation system includes wind speed,doubly-fed wind turbine and dual PWM converters.Then the simulation models are established in PSCAD software,and the correctness of each model is verified.Then,the overall model of the system is built to simulate the integration of the renewable energy power generation system into the floating nuclear power station and the load change when the renewable energy power generation system is merged into the floating nuclear power plant.The transient stability of the system is analyzed,and the results show that the system stability is good.At the same time,the situation of the renewable energy power generation system as a supplementary emergency power source for floating nuclear power plants is also studied,and the problems that need to be solved in this case are analyzed.Finally,the importance of the emergency diesel generator set to the floating nuclear power plant is analyzed,and the method of calculating and checking the unit capacity is researched according to the actual load loading program.An emergency diesel generator loading simulation model is established for simulation verification.The results show that the performance index during the loading process meets the requirements and the selection capacity is reasonable.