Hyeonjin Kim

College of Engineering

Works (7)

Updated: December 16th, 2024 08:11

2024 journal article

A Contextually Supervised Optimization-Based HVAC Load Disaggregation Methodology

IEEE TRANSACTIONS ON SMART GRID, 15(4), 3852–3863.

By: H. Kim n, K. Ye n, D. Lee* & N. Lu n

author keywords: HVAC; Optimization; Hidden Markov models; Estimation; Load modeling; Dictionaries; Smart meters; Load disaggregation; non-intrusive load monitoring; optimization-based blind source separation; contextual supervision
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: July 8, 2024

2024 journal article

Applying fine-tuned LLMs for reducing data needs in load profile analysis

APPLIED ENERGY, 377.

By: Y. Hu*, H. Kim*, K. Ye* & N. Lu*

author keywords: Fine-Tuning; Large Language Models; Load Profile Analysis; Missing Data Restoration; Prompt Engineering
Sources: Web Of Science, NC State University Libraries
Added: December 9, 2024

2024 article

BERT-PIN: A BERT-Based Framework for Recovering Missing Data Segments in Time-Series Load Profiles

Hu, Y., Ye, K., Kim, H., & Lu, N. (2024, July 1). IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, Vol. 7.

By: Y. Hu n, K. Ye n, H. Kim n & N. Lu n

author keywords: Load modeling; Transformers; Encoding; Data models; Bidirectional control; Power systems; Adaptation models; Bidirectional encoder representations from transformers (BERT); conservation voltage reduction; machine learning; missing data restoration; power system; transformer
Sources: Web Of Science, ORCID, NC State University Libraries
Added: July 8, 2024

2023 article

A Modified Sequence-to-point HVAC Load Disaggregation Algorithm

2023 IEEE POWER & ENERGY SOCIETY GENERAL MEETING, PESGM.

By: K. Ye n, H. Kim n, Y. Hu n, N. Lu n, D. Wu* & P. Rehm

author keywords: demand response; HVAC load; load disaggregation; machine learning; convolutional neural network (CNN); transfer learning
TL;DR: Simulation results show that the proposed modified S2P algorithm outperforms the original S1P model and the support-vector machine based approach in accuracy, adaptability, and transferability. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: November 20, 2023

2023 article

An ICA-Based HVAC Load Disaggregation Method Using Smart Meter Data

2023 IEEE POWER & ENERGY SOCIETY INNOVATIVE SMART GRID TECHNOLOGIES CONFERENCE, ISGT.

By: H. Kim n, K. Ye n, H. Lee n, R. Hu n, N. Lu n, D. Wu*, P. Rehm

author keywords: HVAC system; Independent component analysis; Non-intrusive load monitoring; Smart meter data
TL;DR: An independent component analysis (ICA) based unsupervised-learning method for heat, ventilation, and air-conditioning (HVAC) load disaggregation using low-resolution smart meter data and uses the dependency between the daily nocturnal and diurnal loads extracted from historical meter data to smooth the base load profile. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023

2023 article

Design Considerations of a Coordinative Demand Charge Mitigation Strategy

2023 IEEE POWER & ENERGY SOCIETY GENERAL MEETING, PESGM.

By: R. Hu n, K. Ye n, H. Kim n, H. Lee n, N. Lu n, D. Wu*, P. Rehm

author keywords: demand reduction; demand response; load forecast; payback; peak demand probability.
Sources: Web Of Science, NC State University Libraries
Added: November 20, 2023

2021 journal article

Probabilistic Solar Power Forecasting Based on Bivariate Conditional Solar Irradiation Distributions

IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, 12(4), 2031–2041.

By: H. Kim n & D. Lee*

author keywords: Forecasting; Predictive models; Probabilistic logic; Correlation; Gaussian processes; Solar power generation; Probabilistic forecasting; Solar power; Kriging technique; Offer strategy; Gaussian process; Gradient boosting
TL;DR: A two-stage probabilistic solar power (SP) forecasting algorithm to utilize the solar irradiation (SI) observations measured from different locations and a changeable ensemble model, where there are different weights for each weather condition, is proposed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: October 12, 2021

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