Fault Section Estimation in Radial LVDC Distribution System Using Wavelet Transform

Energies

Hun-Chul Seo¹  Gi-Hyeon Gwon²  Keon-Woo Park³ 

[1] Department of Electrical & Electronic Engineering, Yonam Institute of Technology, Jinju-si 52821, Korea;Department of Smart Electrical & Electronic Engineering, Yonam Institute of Technology, Jinju-si 52821, Korea;Next Square, Gunpo-si 15850, Korea;

关键词: fault current;    fault section estimation;    LVDC distribution system;    wavelet transform;   

DOI  :  10.3390/en14248486

来源: DOAJ

【 摘 要 】

The demand for low voltage DC (LVDC) distribution systems is increasing due to the rapid development of power conversion technology, the increase of DC-based digital loads, and the expansion of DC-based distributed generation (DG). For the stable operation of the LVDC distribution system, it is necessary to develop a protection method. In this paper, the fault section is estimated using wavelet transform (WT) in LVDC distribution system. The fault section is classified into a DC line and a DC bus. The characteristics of fault current at each fault section part are analyzed in simple and actual LVDC system. Based on this analysis, the algorithm for fault section estimation is proposed using the detail component after performing WT. The results of fault section estimations are verified through various simulations using EMTP and MATLAB. The fault section estimation can be utilized in the development of protection schemes in LVDC distribution system.

【 授权许可】

Unknown