Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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有源頻率偏移法在光伏系統(tǒng)孤島檢測中的應用

來源:電工電氣發(fā)布時間:2016-03-15 14:15 瀏覽次數(shù):633

有源頻率偏移法在光伏系統(tǒng)孤島檢測中的應用 

石子偉 
東南大學 電氣工程學院,江蘇 南京 210096 
 

摘 要: 當并網(wǎng)逆變器的輸出與負載需求的功率相匹配時,被動式孤島檢測方法就會失效。介紹了帶正反饋的有源頻率偏移法檢測孤島效應的原理,討論了該法可能存在的檢測盲區(qū),并基于此法在Matlab/Simulink 平臺進行了系統(tǒng)的仿真驗證。結(jié)果表明,該法檢測孤島效應迅速有效,對特定負載無檢測盲區(qū),達到了孤島檢測相關標準的要求。
關鍵詞: 孤島檢測;光伏;并網(wǎng)逆變;有源頻率偏移法
中圖分類號:TM615 文獻標識碼:A 文章編號:1007-3175(2013)05-0035-04


Application of Active Frequency Drift Method in Islanding Test of Photovoltaic System 

SHI Zi-wei 
School of Electrical Engineering, Southeast University, Nanjing 210096, China 
 

Abstract: When the grid-connected inverter output power was equivalent to the power of loads, the passive islanding test might be ineffective. Introduction was made to the principle of active frequency drift (AFD) method with positive feedback to test islanding effect. This paper discussed the possible blind zone by AFD method and based on this method, simulation verification was carried out on Matlab/Simulink platform. The results show that the method to test islanding effect is fast and valid, without test blind zone for special load, to have reached requirements of related islanding test standard.
Key words: islanding test; photovoltaic; grid-connected inverter; active frequency drift method


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