Volume 8, Issue 2, September 2014, Pages 242–251
Iman Soltani1, Mohammad Reza Alizadeh Pahlavani2, and Masoud Akbari3
1 Department of Electrical Engineering, Firoozkooh Branch, Islamic Azad University, Firoozkooh, Iran
2 Faculty of Electrical Engineering, Malek-Ashtar University of Technology (MUT) Tehran, Iran
3 Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
One of the important protection characteristics in online distributed generation is to identify the islanding operation. And in accordance with standards of distribution network, this identification must take in less Than 2 seconds. A novel islanding detection method for an inverter-based distribution generation power system is proposed in this paper. The inverter-based distribution generation power system includes a dc power source and a grid-connected DC/AC inverter. The grid-connected DC/AC inverter acts as a virtual capacitor as the frequency is slightly lower than the fundamental frequency of utility voltage. Hence, the proposed method can immediately detect the islanding operation. This method is combination of previous methods therefore its operation is more suitable. The results of simulation done by MATLAB program, shows the suitable operation of this method well. It is observed that method is highly effective in islanding detection, including different islanding and non-islanding conditions in the initial test system and standard inverter-based distribution generation power system? with wide variations in operating parameters.
Author Keywords: Islanding Detection Method, Inverter-Based Distribution Generation Power System, ? Impedance Unbalancing, Harmonic Distortion, Current.
Iman Soltani1, Mohammad Reza Alizadeh Pahlavani2, and Masoud Akbari3
1 Department of Electrical Engineering, Firoozkooh Branch, Islamic Azad University, Firoozkooh, Iran
2 Faculty of Electrical Engineering, Malek-Ashtar University of Technology (MUT) Tehran, Iran
3 Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
One of the important protection characteristics in online distributed generation is to identify the islanding operation. And in accordance with standards of distribution network, this identification must take in less Than 2 seconds. A novel islanding detection method for an inverter-based distribution generation power system is proposed in this paper. The inverter-based distribution generation power system includes a dc power source and a grid-connected DC/AC inverter. The grid-connected DC/AC inverter acts as a virtual capacitor as the frequency is slightly lower than the fundamental frequency of utility voltage. Hence, the proposed method can immediately detect the islanding operation. This method is combination of previous methods therefore its operation is more suitable. The results of simulation done by MATLAB program, shows the suitable operation of this method well. It is observed that method is highly effective in islanding detection, including different islanding and non-islanding conditions in the initial test system and standard inverter-based distribution generation power system? with wide variations in operating parameters.
Author Keywords: Islanding Detection Method, Inverter-Based Distribution Generation Power System, ? Impedance Unbalancing, Harmonic Distortion, Current.
How to Cite this Article
Iman Soltani, Mohammad Reza Alizadeh Pahlavani, and Masoud Akbari, “A New Islanding Detection Method For Inverter-Based Distribution Generation Power System? Using Impedance Unbalancing And Total Harmonic Distortion Of Current,” International Journal of Innovation and Scientific Research, vol. 8, no. 2, pp. 242–251, September 2014.
