Design Of Wind And Solar Complementary Power Supply System In Antarctica Zhongshan Station

This topic is derived from the special project of "The comprehensive survey and evaluation of the Antarctic and Arctic environments"(No.CHINAER 2016-02-02).Under the support of special project,the application research of wind and solar complementary power supply system is mainly carried out at Zhongshan Station in Antarctica.Since the discovery of the Antarctic continent,it has been closely watched by various countries.With the establishment of scientific research stations and the increasing number of scientific examination facilities,human influence on the Antarctic region is gradually expanding.As a traditional fuel,diesel is widely used for scientific research and power supply for research teams.Many studies have shown that the combustion of fossil fuels directly and indirectly leads to environmental problems.In order to protect the Antarctic environment more effectively and at the same time continue to conduct a deep scientific investigations on meteorology,biology,and geology of Antarctica,this paper considers implementing different degrees of power supply substitution for the power system of the Antarctic examination station.This paper takes the Zhongshan Station in Antarctica as the research object considering the location,altitude,meteorological conditions and extreme environmental conditions of Zhongshan Station,designed a special wind-solar complementary power supply system for Zhongshan Station.Firstly,on the NASA data platform of NASA website,we obtained the meteorological data of Zhongshan Station in the past eight years as a reference,combined with the working principle of the wind-solar complementary power supply system,we selected the wind turbine generators,solar panels and batteries,and according to the general principles of PV arrays and battery arrays,the number of series and parallel connections of PV arrays and battery packs was determined.Then,in order to maximize the use of wind and solar energy,we designed an MPPT control strategies for wind and solar power generation system.Comparing several battery charging control strategies,we finally select the three-stage charging method,and use MATLAB simulation software to simulate and model each system to verify that the selected control strategy can meet the system requirements.Then,on the data platform of the China Polar Research Center,we collected data on wind speed,light intensity,and air temperature from 2016 to 2017 at Zhongshan Station.The monthly average of the meteorological data of Zhongshan Station is obtained by summarizing the data with NASA.We processed the data of the diesel power supply system of Zhongshan station from CHINARE 32 nd,summed up the power consumption law and load power of Zhongshan Station.Combining the above data,the energy matching calculation is performed to determine whether the selected equipment meets the requirements.The results prove that the selected model can meet the system requirements.Based on this,we proposed a control strategy of the wind-solar complementary power supply system of Zhongshan Station and the energy flow of the system under different working modes was introduced.For the extreme polar night phenomenon in Antarctica,this paper proposed a load shedding control strategy in extreme environment.And using simulation software to simulate control strategies,the experiments showed that the system can work normally,not only can meet the maximum power tracking requirements of the subsystems,but also can realize wind and solar power supply when the energy is insufficient.In extreme environments,it can also ensure that the first-order load can continuously operated for a long time.Finally,in order to verify the feasibility of the control strategy,we designed a wind-solar complementary controller hardware circuit and software program.The controller uses the MSP430 microcontroller as main control chip.We also designed a wind-solar complementary circuits and controller peripheral circuits,and wrote a corresponding program.After the verification of each module and the experiment of the overall hardware,it is proved that the control strategy can be achieved and can meet the power supply requirements of the system.Research shows: the weather conditions of Zhongshan Station are suitable for scenery complementary power supply.However,due to the special climatic conditions,special control strategies are needed to ensure the system operation.The control strategy designed in this paper covers all meteorological conditions and can guarantee the normal work of the wind-solar complementary power supply system in the Antarctic Zhongshan Station area.