Research On Optimization Of Marine Renewable Energy Comprehensive Utilization System

With the deepening of the research on renewable energy,how to make good use of these renewable energy and in what form has aroused the thinking of the majority of researchers.Since wind,solar,wave,tidal and other renewable energy resources are abundant on the sea surface,it is of great significance to establish a comprehensive utilization system of Marine renewable energy after the concept of offshore platform is put forward,and to study how to improve the utilization rate and economy of renewable energy.In this paper,a new comprehensive utilization system of renewable energy integrating wind energy,solar energy,salt differential energy and tidal energy is built and optimized.Firstly,the present situation and development trend of renewable energy system research at home and abroad are summarized,and the feasibility of building a comprehensive utilization system platform integrating wind,solar,salt differential energy and tidal energy is discussed.Then the theoretical models of each system in the renewable energy comprehensive utilization system are discussed.Based on the resources and electricity consumption of Daguan Island in Jimo City,Shandong Province,the load of the system is determined and the equipment selection and capacity configuration are carried out.Secondly,the comprehensive utilization system of renewable energy is simulated and analyzed.The relevant simulation model is built in PSCAD.The system includes wind power generation,solar photovoltaic power generation,tidal power generation,salt difference power generation and battery energy storage five systems,respectively to model,and through simulation to determine the stability of each system performance.The grid connection analysis of the renewable energy comprehensive utilization system is completed.The system can keep the basic stability under the conditions of load change and environment change,and the simulation results are in line with the expected effect of the system.Finally,combined with the power generation characteristics of each distributed power source,an optimal allocation model of Marine renewable energy comprehensive utilization system is established by using particle swarm optimization algorithm.In the optimization model,the economy and reliability of the system are taken as the optimization objectives,and the number of equipment installed on the platform,load loss rate,matching degree of power supply and load,and battery quantity are taken as constraints of the particle swarm optimization algorithm to optimize the capacity allocation of the renewable energy comprehensive utilization system.