@article{ART003317568},
author={Yong-Je Ko and Ho-Young Kwak},
title={An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer},
journal={Journal of The Korea Society of Computer and Information},
issn={1598-849X},
year={2026},
volume={31},
number={3},
pages={1-8}
TY - JOUR
AU - Yong-Je Ko
AU - Ho-Young Kwak
TI - An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer
JO - Journal of The Korea Society of Computer and Information
PY - 2026
VL - 31
IS - 3
PB - The Korean Society Of Computer And Information
SP - 1
EP - 8
SN - 1598-849X
AB - This study proposes a time-series model that simultaneously predicts the battery cell average temperature (cTavg) and state of charge (SOC) based on high-frequency (5-second) operational logs from a single residential PV-ESS system operated in a low-temperature environment during winter (2024-12-29 ~ 2025-02-13, total 812,859 records). It compares LSTM encoder-decoder and Transformer-based architectures and suggests a method for early detection of low-SOC/low-temperature events by linking the multi-output predictions to a preventive maintenance logic. The model's performance is evaluated against low-SOC days and low-temperature periods observed in actual data, and the operational benefits provided by the prediction-based alerts are quantitatively discussed.
KW - PV-ESS;State of Charge (SOC);Temperature Estimation;Preventive Maintenance;LSTM;Transformer
DO -
UR -
ER -
Yong-Je Ko and Ho-Young Kwak. (2026). An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer. Journal of The Korea Society of Computer and Information, 31(3), 1-8.
Yong-Je Ko and Ho-Young Kwak. 2026, "An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer", Journal of The Korea Society of Computer and Information, vol.31, no.3 pp.1-8.
Yong-Je Ko, Ho-Young Kwak "An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer" Journal of The Korea Society of Computer and Information 31.3 pp.1-8 (2026) : 1.
Yong-Je Ko, Ho-Young Kwak. An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer. 2026; 31(3), 1-8.
Yong-Je Ko and Ho-Young Kwak. "An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer" Journal of The Korea Society of Computer and Information 31, no.3 (2026) : 1-8.
Yong-Je Ko; Ho-Young Kwak. An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer. Journal of The Korea Society of Computer and Information, 31(3), 1-8.
Yong-Je Ko; Ho-Young Kwak. An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer. Journal of The Korea Society of Computer and Information. 2026; 31(3) 1-8.
Yong-Je Ko, Ho-Young Kwak. An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer. 2026; 31(3), 1-8.
Yong-Je Ko and Ho-Young Kwak. "An Efficient Simultaneous Thermal and Electrical State Estimation for Preventive Maintenance of PV-ESS in Low-Temperature Environments: A Case Study of LSTM/Transformer" Journal of The Korea Society of Computer and Information 31, no.3 (2026) : 1-8.
