Comparative Study of Passive and Active Islanding Detection Methods for PV Grid-Connected Systems

被引：43

作者：

Abokhalil, Ahmed G. ^{[1
,2
]}

Awan, Ahmed Bilal ^{[1
]}

Al-Qawasmi, Abdel-Rahman ^{[1
]}

机构：

[1] Majmaah Univ, Coll Engn, Dept Elect Engn, Al Majmaah 11952, Saudi Arabia

[2] Assiut Univ, Elect Engn Dept, Assiut 71515, Egypt

来源：

SUSTAINABILITY | 2018年 / 10卷 / 06期

关键词：

photovoltaic; islanding detection; active; passive; DISTRIBUTED GENERATORS; NONDETECTION ZONE; INVERTER; PROTECTION; SCHEMES; PERFORMANCE;

D O I：

10.3390/su10061798

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Photovoltaic (PV) power grid-connected systems have the advantages of being prompt and reliable supplies of electrical power. Nevertheless, the installation and operation requirements from the grid side have to be fulfilled in order to guarantee the security of the PV system technicians and the efficiency of the power system. Particularly, the potential for islanding is one of the dreads that are brought about by PV grid-connected systems. To be able to tackle these concerns, this paper investigates recent islanding detection techniques and topologies for PV systems. Active islanding detection techniques apply regular disturbances to the inverter system and then analyze the output voltage or frequency to investigate the islanding and stability of the grid. If the injected disturbances influence the load voltage or frequency, the controller forces the intermediate inverter to stop sending power to the connected load. In addition, several islanding detection techniques that inject a periodical signal to the reference current that causes a change in the magnitude of inverter output voltage when islanding happens in a three-phase photovoltaic grid-connected system are discussed. The validity of the proposed technique is tested and verified through PSIM software.

引用

页数：15

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