Title :
Current injection disturbance based voltage drift control for anti-islanding of photovoltaic inverter system
Author :
Alam, Mohammad Meraj
Author_Institution :
Dept. of Electr. Eng., IIT Delhi, New Delhi, India
Abstract :
Islanding detection is necessary as it causes power quality issues, equipment damage and personnel hazards. This paper proposes a new active anti-islanding scheme for inverter based photovoltaic system connected to grid. This method is based on injecting a current disturbance at the PV inverter output and observing the behavior of voltage at the point of common coupling (PCC) in absence of grid which depends upon the load connected to the PV inverter in an island condition. The proposed control scheme is based on Synchronous Reference Frame or dq frame. The voltage drift scheme using control gain and current command reference as positive feedback is utilized to drift the PCC voltage beyond the threshold limits to detect island within 2 seconds as prescribed by IEEE 1547. The test system configuration and parameters for anti-islanding study is prepared on IEEE 929 standards. The proposed control scheme is implemented on constant power controlled inverter system with reliable islanding detection. The effectiveness of proposed anti-islanding scheme is validated by extensive simulation done in MATLAB platform.
Keywords :
invertors; photovoltaic power systems; voltage control; MATLAB platform; active anti-islanding scheme; current injection disturbance based voltage drift control; equipment damage; islanding detection; personnel hazards; photovoltaic inverter system; point of common coupling; power quality issues; Application software; Cutoff frequency; Inverters; Load modeling; Photovoltaic systems; Reactive power; Voltage control; Anti-Islanding; PCC; PV inverter; Voltage drift control;
Conference_Titel :
Electrical, Electronics and Computer Science (SCEECS), 2012 IEEE Students' Conference on
Conference_Location :
Bhopal
Print_ISBN :
978-1-4673-1516-6
DOI :
10.1109/SCEECS.2012.6184779