Improved Active Frequency Drift Islanding Detection Method for Grid-Connected Photovoltaic Power Generation System

2018 ◽  
Author(s):  
Zhou Xingchi ◽  
Shen Anwen ◽  
Xu Jinbang
Keyword(s):  
Power Generation ◽  
Detection Method ◽  
Frequency Drift ◽  
Islanding Detection ◽  
Generation System ◽  
Photovoltaic Power ◽  
Power Generation System

An Islanding Detection Method for Photovoltaic Power Generation System Using Fluctuation Characteristic of PCC Harmonic Voltage

2014 ◽  
Vol 998-999 ◽  
pp. 574-577
Author(s):  
Luo Yun
Keyword(s):  
Power Generation ◽  
Detection Method ◽  
Islanding Detection ◽  
Generation System ◽  
Detection Zone ◽  
Photovoltaic Power ◽  
Point Of Common Coupling ◽  
Harmonic Voltage ◽  
Power Generation System ◽  
Common Coupling

In the photovoltaic power generation system, the harmonic voltage of the point of common coupling (PCC) is determined by system disturbance, local load and photovoltaic power generation system itself together. Based on the fluctuations of this harmonic voltage, a new islanding detection method for the PV system is proposed. By extracting the higher harmonic components from the wavelet transformation of point of common coupling (PCC) voltage, and then taking its fluctuations as the islanding identification and detection index, non-detection zone (NDZ) can be eliminated, without a plus disturbance. According to IEEE Std.1547, simulated verification of the proposed method is accomplished in the ideal photovoltaic grid system. When the PCC voltage and frequency are within the normal range, it can not only give a fast and accurate detection to the occurrence of islanding, but also identify the false islanding, such as voltage dips and switching loads, effectively avoiding false detection caused by the false islanding.

scholarly journals Analysis of Inertia Characteristics of Photovoltaic Power Generation System Based on Generalized Droop Control

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 37834-37839
Author(s):  
Yuxin Zha ◽  
Jian Lin ◽  
Guanjun Li ◽  
Yue Wang ◽  
Yizhang
Keyword(s):  
Power Generation ◽  
Droop Control ◽  
Generation System ◽  
Photovoltaic Power ◽  
Power Generation System
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