| Title |
Development of Arc Detection Algorithm for 50kW Photovoltaic System |
| Authors |
김상규(Sang-Kyu Kim) ; 이창성(Chang-Sung Lee) ; 지평식(Pyeong-Shik Ji) |
| DOI |
http://doi.org/10.5370/KIEEP.2018.67.1.027 |
| Keywords |
Arc detection ; Photovoltaic system ; Frequency analysis ; Solar energy ; Arc fault interruption |
| Abstract |
In this paper, we developed an algorithm to detect arc of PV power plant through frequency analysis. For arc detection based on frequency analysis, the filter should be designed to emphasize the difference between the arc state and the normal state. Therefore, in this paper, we analyzed the arc detection performance according to various filter structures. The arc detection algorithm developed in this paper extracts the filtering signal on current by using various filters and then calculates the frequency components and total energy using the FFT. In the final step, the arc is detected using the calculated energy magnitude. In order to verify the performance of the proposed arc detection algorithm, experiments were conducted on 51kW solar inverters connected to power line. Through various experiments, it was confirmed that the proposed method effectively detects the arc. |