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A Novel Hybrid (Active & Passive) Islanding Detection Method for Distributed Generation System |
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| รหัสดีโอไอ | |
| Creator | B Hariprasad, P Bharat Kumar, P Sujatha, G Sreenivasan |
| Title | A Novel Hybrid (Active & Passive) Islanding Detection Method for Distributed Generation System |
| Contributor | - |
| Publisher | TuEngr Group |
| Publication Year | 2565 |
| Journal Title | International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies |
| Journal Vol. | 13 |
| Journal No. | 9 |
| Page no. | 13A9F: 1-16 |
| Keyword | Active and passive Model, Bilateral Reactive Power Variation, Voltage Unbalance/Total Harmonic Distortion |
| URL Website | http://TuEngr.com/Vol13-9.html |
| Website title | ITJEMAST V13(9) 2022 @ TuEngr.com |
| ISSN | 2228-9860 |
| Abstract | This research proposes a new hybrid method for detecting islanding in Distributed Generation (DG) units. The functioning of the hybrid technique is 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 in this research. 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. As a result, 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 Total harmonic distortion (THD). As a result, 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 under three case study conditions: I Prior to Islanding, (ii) During Islanding, and (iii) Following Islanding. |
