光伏电站箱式变压器遮阳棚一体化设计及运行经济性分析
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摘要
箱式变压器是光伏电站中将光伏逆变器出口低压交流升为高压交流的重要设备,基于大型光伏电站的运行特点,在土地安装面积有限的情况下,提出了将光伏电池组件布置在箱式变压器顶部进行集成发电的方案,在满足遮阳降温功能的同时,利用太阳能进行光伏发电。以某20 MW光伏电站为例,对项目的系统效率、出力特性、项目的投资收益进行了详细的分析和测算。结果显示,在箱式变压器顶部安装光伏电池板可降低绕组温度20℃左右,在现有电价条件下,投资收益率可达到17%,综合表明该方案具有较大的实用价值。
Pad mounted transformer is an important equipment for photovoltaic power plants which can boost the low voltage AC of photovoltaic inverter to high voltage AC. Considering the operating characteristics of large-scale photovoltaic power plants and the limited land area,it put forward an arrangement of photovoltaic modules on top of the pad mounted transformer for integrated power generation. It can generate power by using solar energy while meeting the shading function. Taking a 20 MW PV plant as an example,detailed analysis and calculation of the project's system efficiency,output characteristics,and project investment income are made. The results show that the installation of photovoltaic panels on the top of pad mounted transformer can reduce the winding temperature by around 20 ℃,and the return on investment is expected to be 17% under current electricity price. Comprehensively shows that the program has greater practical value.
Pad mounted transformer is an important equipment for photovoltaic power plants which can boost the low voltage AC of photovoltaic inverter to high voltage AC. Considering the operating characteristics of large-scale photovoltaic power plants and the limited land area,it put forward an arrangement of photovoltaic modules on top of the pad mounted transformer for integrated power generation. It can generate power by using solar energy while meeting the shading function. Taking a 20 MW PV plant as an example,detailed analysis and calculation of the project's system efficiency,output characteristics,and project investment income are made. The results show that the installation of photovoltaic panels on the top of pad mounted transformer can reduce the winding temperature by around 20 ℃,and the return on investment is expected to be 17% under current electricity price. Comprehensively shows that the program has greater practical value.
引文
[1]吕贝,邱河梅,张宇.太阳能光伏发电产业现状及发展[J].华电技术,2010,32(1):73-76.
[2]马宏忠,李峥.电力变压器过热故障及其综合诊断[J].高电压技术,2005,31(4):9-11.
[3]徐康健.一台110 kV变压器内部过热性故障的分析与判断[J].变压器,2007,44(12):48-49.
[4]王淑娟,薛满宇,刘松民.光伏组件超配的经济性分析[J].中国电力,2016,49(6):181-184.
[5]牟娟,范忠瑶,易金印.基于辐射条件的光伏系统容配比优化设计方法研究[J].太阳能,2018(5):19-24.
[6]陈建国,张金剑,虞立涛.基于温度修正的光伏电站发电性能评价指标对比分析[J].华电技术,2016,38(5):73-76.
[7]黄湘,葛文刚,禹超.太阳能光伏电站设计影响因素分析[J].华电技术,2013,35(2):79-82.
[8]党锁刚,高富春,汉鹏武,等.太阳能发电技术特性研究[J].华电技术,2010,32(6):76-80.
[9]国家计划委员会.建设项目经济评价方法与参数[M]. 3版.北京:中国计划出版社,1987.
[10]肖黎明.设备衰减率对太阳能光伏发电利用小时数的影响分析[J].华电技术,2017,39(12):67-69.
[2]马宏忠,李峥.电力变压器过热故障及其综合诊断[J].高电压技术,2005,31(4):9-11.
[3]徐康健.一台110 kV变压器内部过热性故障的分析与判断[J].变压器,2007,44(12):48-49.
[4]王淑娟,薛满宇,刘松民.光伏组件超配的经济性分析[J].中国电力,2016,49(6):181-184.
[5]牟娟,范忠瑶,易金印.基于辐射条件的光伏系统容配比优化设计方法研究[J].太阳能,2018(5):19-24.
[6]陈建国,张金剑,虞立涛.基于温度修正的光伏电站发电性能评价指标对比分析[J].华电技术,2016,38(5):73-76.
[7]黄湘,葛文刚,禹超.太阳能光伏电站设计影响因素分析[J].华电技术,2013,35(2):79-82.
[8]党锁刚,高富春,汉鹏武,等.太阳能发电技术特性研究[J].华电技术,2010,32(6):76-80.
[9]国家计划委员会.建设项目经济评价方法与参数[M]. 3版.北京:中国计划出版社,1987.
[10]肖黎明.设备衰减率对太阳能光伏发电利用小时数的影响分析[J].华电技术,2017,39(12):67-69.