| With global warming and lack of fossil energy issues becoming increasingly prominent,the development and utilization of green and renewable energy power supply is an important direction to ensure the sustainable development of human society.However,since the two energy sources of wind and light cannot be controlled in time and space,their output will show obvious fluctuation,intermittency and randomness.Therefore,the separate integration of wind and light will have a huge impact on the power system;hydropower stations have strong adjustment capabilities and Features such as strong load tracking can adjust the output instability of wind power and photovoltaic,which is more conducive to promoting the consumption of new energy;Energy storage device can store or release electricity,reduce power fluctuations of wind and light output fluctuations.The development of a multi-energy complementary power generation system for wind,water and water storage can not only meet the diversity requirements of regional power supply,but also solve the problem of lack of power supply to hydropower stations due to increased load.Planning the wind and solar power storage capacity that matches the hydropower station will have a positive impact on improving the power supply reliability of the distributed complementary power generation system.It is also difficult to develop a multi-energy complementary power generation system to design a reasonable distributed power capacity configuration scheme according to the different needs of the receiving end.Therefore,this article aims to design a set of the most reasonable wind and solar storage capacity allocation scheme for the built hydropower station,the main work is as follows:(1)Introduced the current research status of the capacity allocation of new energy power generation and multi-energy complementary systems at home and abroad.This paper builds a wind/solar/water/storage complementary power generation system based on the existing hydropower stations,and explains the power generation principles of each power source and Establish its output model.(2)Determining a reasonable capacity configuration plan is of great significance for reducing the total cost of complementary power generation systems and improving the reliability of power supply.In order to establish the capacity allocation model of the wind-solar-water battery complementary power generation system aiming at the minimum total investment cost of the system and the minimum storage battery capacity,after meeting the constraints of power balance and SOC,the number of starts and stops of the hydropower unit,the load shortage rate,etc.Evaluation analysis.Index,using the newly proposed cosine improved adaptive genetic-tabu search algorithm(CAGA-TS)to solve the model,can greatly improve the convergence speed and accuracy of the algorithm.(3)After evaluating the calculation results,the final conclusion is drawn:the value of the load power shortage rate will have a certain effect on the distributed power capacity configuration scheme,the total cost of the system,and the number of starts and stops of the hydropower unit.This article focuses on the research that when LPSP=0.02,the optimal wind,solar and storage capacity of the existing hydropower station(1200MW)are:500MW,1067MW,400MW,the storage battery under this configuration scheme can better smooth the fluctuation of wind and solar output Improve the utilization rate of landscape resources,and the water volume of the reservoir can be optimized during the dry season and the high water period. |
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