光伏電站設(shè)計中集中式與組串式逆變器的比較選擇
謝潔宇,王海華,常城,張曼
(中國能源建設(shè)集團江蘇省電力設(shè)計院有限公司,江蘇 南京 211102)
摘 要:光伏電站工程設(shè)計中,選擇不同類型的逆變器,對于提高系統(tǒng)可靠性、減少系統(tǒng)損耗、降低系統(tǒng)成本意義重大。介紹了當(dāng)前常用的集中式、組串式兩種逆變器的結(jié)構(gòu)及特點,從發(fā)電效率、建設(shè)成本、系統(tǒng)可靠性三個方面對兩種逆變器進行綜合比較,并將各方因素轉(zhuǎn)化到經(jīng)濟層面進行定量對比。綜合比較結(jié)果,運行年限在2 年及以上的光伏項目采用組串式逆變器方案更有優(yōu)勢。
關(guān)鍵詞:集中式逆變器;組串式逆變器;發(fā)電效率
中圖分類號:TM464 文獻標(biāo)識碼:A 文章編號:1007-3175(2017)04-0017-04
Comparison Selection of Centralized Inverter and String Inverter in Photovoltaic Power Station Design
XIE Jie-yu, WANG Hai-hua, CHANG Cheng, ZHANG Man
(China Energy Engineering Jiangsu Power Design Institute Co., Ltd, Nanjing 2111 02, China)
Abstract: In the design of photovoltaic power station, the selection of different types of inverters is very important to improve the system reliability, to reduce the system losses and to lower the system cost. Introduction was made to the structure and characteristic of common, centralized and string inverters. This paper carried out the comprehensive comparison for the two inverters from the three respects of generating efficiency, construction cost and system reliability and changed each side elements into the economic level to carry out quantitative comparison. The comprehensive comparison result shows that the photovoltaic project, operating more than two years and adopting the string inverter, is superior to other projects.
Key words: centralized inverter; string inverter; power generation efficiency
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