光伏-压电复合独立供电系统的运行分析  

Operation Analysis of a Photovoltaic-Piezoelectric Composite Independent Power Supply System

作　　者：孟梓睿 刘雅雯 巨星[1,2] MENG Zirui;LIU Yawen;JU Xing(School of Energy Power and Mechanical Engineering,North China Electric Power University,Changping District,Beijing 102206,China;Key Laboratory of Power Station Energy Transfer Conversion and System of Ministry of Education(North China Electric Power University),Changping District,Beijing 102206,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,北京市昌平区102206 [2]电站能量传递转化与系统教育部重点实验室(华北电力大学),北京市昌平区102206

出　　处：《发电技术》2024年第4期696-704,共9页Power Generation Technology

基　　金：国家自然科学基金项目(51876062)。

摘　　要：【目的】为了使小型独立供电单元提供更为灵活且稳定的电力供应,设计了光伏-压电复合独立供电系统,并分析了其在实际运行中的性能。【方法】考虑公交车站等供电场景,建立压电陶瓷与光伏电池的输出特性模型,设计光伏-压电户外独立供电单元的系统配置,分析典型日、典型年及长期运行工况下的电力输出及系统稳定性。针对有无压电陶瓷的系统设计,分析系统供电可靠率、弃电量和发电成本。【结果】增加压电陶瓷后,系统的可靠率为99.18%,发电成本为1.399元/(kW·h),年弃电量为161.24 kW·h,与无压电陶瓷的系统相比,可靠率提高了0.12%,成本增加了0.8%,弃电量减少了18.6%。【结论】增加压电陶瓷后,虽然系统发电成本略有上升,但系统供电可靠性提高、弃电量减少。随着压电陶瓷成本下降和技术发展,光伏-压电复合独立供电系统在特殊场景下将具有更好的应用前景。[Objectives]In order to make the small independent power supply unit provide more flexible and stable power supply,a photovoltaic-piezoelectric composite independent power supply system was designed,and its performance in actual operation was analyzed.[Methods]Considering the power supply scenarios such as bus stations,the output characteristics model of piezoelectric ceramics and photovoltaic cells was established,the system configuration of photovoltaic-piezoelectric outdoor independent power supply unit was designed,and the power output and system stability under typical daily,typical annual and long-term operating conditions were analyzed.For the system design with or without piezoelectric ceramics,the reliability rate of power supply,curtailment power and power generation cost of the system were analyzed.[Results]After adding piezoelectric ceramics,the reliability rate of the system is 99.18%,the power generation cost is 1.399 yuan/(kW⋅h),and the annual curtailment power is 161.24 kW⋅h.Compared with the system without piezoelectric ceramics,the reliability rate is increased by 0.12%,the cost is increased by 0.8%,and the curtailment power is reduced by 18.6%.[Conclusions]After the addition of piezoelectric ceramics,although the power generation cost of the system increases slightly,the reliability of the system power supply is improved and the curtailment power is reduced.With the reduction of the cost of piezoelectric ceramics and the development of technology,the photovoltaic-piezoelectric composite independent power supply system will have a better application prospect in special scenarios.

关 键 词：光伏发电 压电陶瓷发电 光伏电池 独立供电 运行分析 经济性分析 

分 类 号：TK019[动力工程及工程热物理]