P Bharat Kumar,
(Department of Electrical & Electronics Engineering, JNTUA CEA, Anantapuramu. A.P., INDIA),
(Department of Electrical & Electronics Engineering, PVKK Institute of Technology, Anantapuramu, A.P., INDIA).
Discipline: Electronical Engineering.
Keywords:Active and passive Model, Bilateral Reactive Power Variation, Voltage Unbalance/Total Harmonic Distortion
This research proposes a new hybrid method for detecting islanding in Distributed Generation (DG) units, based on the combination of an active and a passive approach, with the active method being Bilateral Reactive Power Variation (BRPV) and the passive method being Voltage Unbalance/Total Harmonic Distortion (VU/THD). To detect the islanding of the DG system, active and passive models are used. By combining these models, it is possible to minimize each model's limitations while also incorporating its benefits. In particular, the BRPV technique is triggered only if the VU/THD method suspects island status. The performance of islanding detection is much improved as a result of this. First, a decoupled dual synchronous reference frame phase lock loop (PLL) with a better dynamic response is used to extract the positive and negative series components of the point of common coupling (PCC) voltage. To avoid imprecise detections caused by normal voltage fluctuation, a low-pass filter is used. Thus, the detection sensitivity improves. The conventional VU/THD approach thus concurrently tracks VU and current THD, however, it is discovered to be more sensitive to VU disturbances than current THD. Thus, the voltage THD is investigated in the proposed method. When compared to the other techniques, the improved VU/THD has higher efficiency. The BRPV method reduces reactive power by changing the amplitude of output reactive power between the positive and negative valves. As a result, the reactive power perturbation time is reduced, and power quality is improved. The proposed technique's performance is then activated in MATLAB/Simulink, and the results are assessed prior to, during, and the following islanding.
Paper ID: 13A9F
Cite this article:
Hariprasad, B., Kumar, P.B., Sujatha, P., Sreenivasan, G. (2022). A Novel Hybrid (Active & Passive) Islanding Detection Method for Distributed Generation System. International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 13(9), 13A9F, 1-16. http://TUENGR.COM/V13/13A9F.pdf DOI: 10.14456/ITJEMAST.2022.174