Sang-Hee Kang

TL;DR: In this paper, the active power and frequency control principles of multiple distributed generators (DGs) in a microgrid were described and analyzed, and an algorithm to modify the droop constant of the FFC-mode DGs to ensure proper power sharing among DGs was proposed.

TL;DR: In this paper, an effective fault location algorithm and intelligent fault diagnosis scheme are proposed, which first identifies fault locations using an iterative estimation of load and fault current at each line section, then an actual location is identified, applying the current pattern matching rules.

TL;DR: In this paper, a wavelet-based high-impedance fault (HIF) detector has been proposed for distribution networks with the application of wavelet transform technique, which can be used for HIF detection independent of the network neutral-point grounding mode.

TL;DR: In this paper, a Fourier transform-based modified phasor estimation method is proposed to eliminate the adverse influence of the exponentially decaying dc offsets when discrete Fourier Transform (DFT) is used to calculate the PHASOR of the fundamental frequency component in a relaying signal.

TL;DR: In this paper, a technique of estimating the secondary current corresponding to the current transformer ratio under current transformer saturation was proposed to improve the sensitivity of relays to low level internal faults.