Search Results - "Sang-hee Kang"

High-impedance fault detection in distribution networks with use of wavelet-based algorithm by Michalik, M., Rebizant, W., Lukowicz, M., Seung-Jae Lee, Sang-Hee Kang

“…A new simple and effective algorithm of arcing fault detection in distribution networks with the application of a wavelet transform technique is presented in…”
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Fourier Transform-Based Modified Phasor Estimation Method Immune to the Effect of the DC Offsets by Sang-Hee Kang, Dong-Gyu Lee, Soon-Ryul Nam, Crossley, P.A., Yong-Cheol Kang

“…This paper proposes a Fourier transform-based modified phasor estimation method to eliminate the adverse influence of the exponentially decaying dc offsets…”
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Phasor Estimation in the Presence of DC Offset and CT Saturation by Soon-Ryul Nam, Jong-Young Park, Sang-Hee Kang, Kezunovic, M.

“…A hybrid algorithm for phasor estimation is proposed that is immune to DC offset and current transformer (CT) saturation problems. The algorithm utilizes…”
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Consensus subtypes of hepatocellular carcinoma associated with clinical outcomes and genomic phenotypes by Lee, Sung Hwan, Yim, Sun Young, Jeong, Yun Seong, Li, Qi‐Xiang, Kang, Sang‐Hee, Sohn, Bo Hwa, Kumar, Shwetha V., Shin, Ji‐Hyun, Choi, You Rhee, Shim, Jae‐Jun, Kim, Hayeon, Kim, Ji Hoon, Kim, Shin, Guo, Sheng, Johnson, Randy L., Kaseb, Ahmed, Kang, Koo Jeong, Chun, Yun Shin, Jang, Hee Jin, Lee, Byoung Gill, Woo, Hyun Goo, Ha, Min Jin, Akbani, Rehan, Roberts, Lewis R., Wheeler, David A., Lee, Ju‐Seog

“…Background and Aims Although many studies revealed transcriptomic subtypes of HCC, concordance of the subtypes are not fully examined. We aim to examine a…”
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Centralized Multiple Back-Up Protection Scheme with Sharing Data between Adjacent Substations Based on IEC 61850 by Kim, Min-Soo, Kang, Sang-Hee

“…A centralized multiple back-up protection scheme with sharing data between adjacent substations based on IEC 61850 is suggested in this paper to overcome the…”
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The Effect of Time Synchronization Error in LAN-Based Digital Substation by Son, Kyou Jung, Chang, Tae Gyu, Kang, Sang-Hee

“…In this paper, the effect of time synchronization error on protection algorithms are studied for the usage of the LAN-based collaborative protection. In order…”
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Improved Frequency Estimation Algorithm Based on the Compensation of the Unbalance Effect in Power Systems by Kim, Yoon Hyun, Son, Kyou Jung, Kang, Sang-Hee, Chang, Tae Gyu

“…This article proposes a frequency estimation algorithm that effectively cancels the effect of unbalance in a three-phase power system. Precise frequency…”
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Power-Sharing Method of Multiple Distributed Generators Considering Control Modes and Configurations of a Microgrid by AHN, Seon-Ju, PARK, Jin-Woo, CHUNG, Il-Yop, MOON, Seung-Il, KANG, Sang-Hee, NAM, Soon-Ryul

“…This paper describes the active power and frequency-control principles of multiple distributed generators (DGs) in a microgrid. Microgrids have two operating…”
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Deep Neural Network-Based Removal of a Decaying DC Offset in Less Than One Cycle for Digital Relaying by Sok, Vattanak, Lee, Sun-Woo, Kang, Sang-Hee, Nam, Soon-Ryul

“…To make a correct decision during normal and transient states, the signal processing for relay protection must be completed and designated the correct task…”
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A Fault Location Algorithm Based on Circuit Analysis for Untransposed Parallel Transmission Lines by KANG, Sang-Hee, AHN, Yong-Jin, KANG, Yong-Cheol, NAM, Soon-Ryul

“…This paper proposes a fault-location algorithm for ultra-high-voltage untransposed parallel transmission lines that only use the voltages and currents at the…”
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Clinically conserved genomic subtypes of gastric adenocarcinoma by Jeong, Yun Seong, Eun, Young-Gyu, Lee, Sung Hwan, Kang, Sang-Hee, Yim, Sun Young, Kim, Eui Hyun, Noh, Joo Kyung, Sohn, Bo Hwa, Woo, Seon Rang, Kong, Moonkyoo, Nam, Deok Hwa, Jang, Hee-Jin, Lee, Hyun-Sung, Song, Shumei, Oh, Sang Cheul, Lee, Jeeyun, Ajani, Jaffer A, Lee, Ju-Seog

“…Abstract Gastric adenocarcinoma (GAC) is a lethal disease characterized by genomic and clinical heterogeneity. By integrating 8 previously established genomic…”
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An Accurate CT Saturation Classification Using a Deep Learning Approach Based on Unsupervised Feature Extraction and Supervised Fine-Tuning Strategy by Ali, Muhammad, Son, Dae-Hee, Kang, Sang-Hee, Nam, Soon-Ryul

“…Current transformer (CT) saturation is one of the significant problems for protection engineers. If CT saturation is not tackled properly, it can cause a…”
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New ANN-Based Algorithms for Detecting HIFs in Multigrounded MV Networks by Michalik, M., Lukowicz, M., Rebizant, W., Seung-Jae Lee, Sang-Hee Kang

“…Application of two new ANN-based algorithms for arcing high impedance fault (HIF) detection in multigrounded medium-voltage (MV) distribution networks is…”
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A Frequency Estimation Method Based on a Revised 3-Level Discrete Fourier Transform with an Estimation Delay Reduction Technique by Kang, Sang-Hee, Seo, Woo-Seok, Nam, Soon-Ryul

“…In this paper, a frequency estimation method based on a revised three-level discrete Fourier transform (DFT) with an estimation delay reduction technique is…”
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Improved Time-Synchronization Algorithm Based on Direct Compensation of Disturbance Effects by Seo, Yeoung-Duk, Son, Kyou Jung, An, Gi-Sung, Nam, Kyung Deok, Chang, Tae Gyu, Kang, Sang-Hee

“…In this paper, an improved time-synchronization algorithm is proposed. The improvement of time synchronizing performance was achieved by introducing a…”
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Bayesian Deep Neural Network to Compensate for Current Transformer Saturation by Key, Sopheap, Kang, Sang-Hee, Lee, Nam-Ho, Nam, Soon-Ryul

“…Current transformer saturation has a negative effect on the operation of IEDs, resulting in their malfunction. Here, we present a technique to compensate for…”
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Adaptive Phasor Estimation Algorithm Based on a Least Squares Method by Kim, Nam, Kang

“…This paper proposes an adaptive phasor estimation algorithm based on a least square method that can suppress the adverse effect of an exponentially decreasing…”
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IEC 61850-Based Centralized Protection against Single Line-To-Ground Faults in Ungrounded Distribution Systems by Nam, Soon-Ryul, Ko, Woong-Hie, Key, Sopheap, Kang, Sang-Hee, Lee, Nam-Ho

“…We developed an International Electrotechnical Commission (IEC) 61850-based centralized protection scheme to prevent single line-to-ground (SLG) faults in the…”
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A Study on Deep Neural Network-Based DC Offset Removal for Phase Estimation in Power Systems by Sun-Bin, Kim, Sok, Vattanak, Sang-Hee, Kang, Nam-Ho, Lee, Soon-Ryul Nam

“…The purpose of this paper is to remove the exponentially decaying DC offset in fault current waveforms using a deep neural network (DNN), even under harmonics…”
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IEC 61850-Based Centralized Busbar Differential Protection with Data Desynchronization Compensation by Song, Myeong-Hoon, Kang, Sang-Hee, Lee, Nam-Ho, Nam, Soon-Ryul

“…This paper proposes an IEC 61850-based centralized busbar differential protection scheme, in which data desynchronization between intelligent electronic…”
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