风光储联合发电系统并网控制研究  

Research on grid control of wind-solar energy storage hybrid power generation system

作　　者：赵一豪 朱伟[1] 顾小兴 吴远网 ZHAO Yihao;ZHU Wei;GU Xiaoxing;WU Yuanwang(School of Mechanical Engineering and Rail Transit,Changzhou University,Changzhou 213164,China;Jiangsu Xingguang Power Generation Equipment Co.,Ltd.,Taizhou 225440,China;School of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]常州大学机械与轨道交通学院,江苏常州213164 [2]江苏星光发电设备有限公司,江苏泰州225440 [3]扬州大学电气与能源动力工程学院,江苏扬州225127

出　　处：《重庆理工大学学报（自然科学）》2024年第2期304-313,共10页Journal of Chongqing University of Technology：Natural Science

基　　金：江苏省军民融合发展专项资金重点示范项目(2012-321283-89-02-645535)。

摘　　要：风光储联合发电系统并网运行过程中,辐照度变化和风速变化导致传统控制方法下的功率输出出现较大波动,进而影响系统并网功率平衡。在光伏发电系统最大功率点跟踪控制过程中,提出了一种新型的模糊扰动观察法,优化了模糊控制器的输入量和隶属度函数,对辐照度改变情况下光伏阵列的最大功率点实现更精确的跟踪控制;采用最佳叶尖速比控制策略,实现风速改变情况下风力发电机的最大功率点跟踪控制。由光伏出力、风机出力和并网需求关系,实时控制蓄电池的充放电功率,维持并网电压稳定,保证并网功率平衡。最后,建立了风光储联合发电系统并网模型并进行了系统仿真,分析了光伏阵列的输出功率、风力发电机的输出功率、蓄电池荷电状态和功率变化以及系统并网运行情况,验证了联合发电系统并网输出的稳定性,进而验证了控制策略的可行性。The output power of the wind-solar energy storage hybrid power generation system shows wide fluctuations due to changes in irradiance and wind speed during grid-connected operation when using traditional control methods,affecting the power balance when connecting the power generation system with the electrical grid.To address the issue,a novel improved Perturb and Observe(P&O)method by fuzzy control algorithms is proposed to achieve tracking control of the maximum power point(MPPT)of the photovoltaic array under irradiance variations.Then,an optimal tip-speed ratio control strategy is employed to achieve maximum power point tracking control of the wind turbine under wind speed fluctuations.Charging and discharging of the batteries are controlled in real time based on the balance between power generation and grid power demand.In this way,grid voltage stability and power balance are maintained.Finally,to analyze the output power of each system,a combined wind-solar energy storage generation system model is built.Our results show the proposed method enables the power generation system to stably transmit electric power in a volatile wind-solar environment.

关 键 词：模糊控制 太阳能 风能 储能 

分 类 号：TM614[电气工程—电力系统及自动化]