Hyun-Goo Kim

Hyun-Goo Kim
Korea Institute of Energy Research | KIER · New & Renewable Energy Resource Center

Ph.D.
Chief/Renewable Energy Resource Lab, Dept. Head/Univ. of Science & Technology, Editor-In-Chief/New & Renewable Energy

About

200
Publications
51,602
Reads
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1,127
Citations
Introduction
Center Chief at the New & Renewable Energy Resource Center, designated as the National Center for Standard Reference Data (NCSRD) in Renewable Energy (RE), performs core and fundamental R&D such as RE measurement based on satellite imagery and standardization, RE resource assessment and mapping, RE resource potential estimation and RE power output forecasting to support national policy making and dissemination strategy building for carbon neutrality by 2050.
Additional affiliations
January 2021 - September 2021
The Korean Society for New and Renewable Energy
Position
  • Editor
Description
  • https://www.ksnre.or.kr/eng/ ISSN 1738-3935 (Print) 2713-9999 (Online)
March 2020 - September 2021
KDI School of Public Policy and Management
Position
  • Professor (Associate)
Description
  • https://www.kdischool.ac.kr/#/www
September 2011 - present
University of Science and Technology
Position
  • Professor (Full)
Education
March 1993 - August 1997
Pohang University of Science and Technology
Field of study
  • Environmental Fluid Dynamics

Publications

Publications (200)
Article
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In this paper, a new wind resource assessment procedure for building-integrated wind turbines (BIWTs) is proposed. The objective is to integrate wind turbines at a 555 m high-rise building to be constructed at the center of Seoul, Korea. Wind resource assessment at a high altitude was performed using ground-based remote sensing (RS); numerical weat...
Article
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Germany and South Korea are the world’s sixth and seventh largest emitters of greenhouse gases, respectively; their main sources of pollution being fossil-fueled power plants. Since both countries signed the Paris Agreement in 2016, renewable energy transition is emerging as an effective means and method for avoiding air pollutant emissions and for...
Article
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Several two-equation turbulence models using isotropic eddy viscosity and wall functions are assessed by solution of the neutral atmospheric boundary layer over a flat surface and wind flow over two- and three-dimensional models and real terrain. Calculations are presented for wind flow over the Sirhowy Valley in Wales, an embankment along the Rhin...
Article
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Correct turbulence intensity modeling is crucial for fatigue load estimation for wind turbine structural design. It is well known that the International Electrotechnical Commission 61400-3 Normal Turbulence Model recommended for offshore wind turbine design is not representative of offshore wind conditions. A new model is urgently needed as offshor...
Article
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This study evaluated the applicability of long-term datasets among third-generation reanalysis data CFSR, ERA-Interim, MERRA, and MERRA-2 to determine which dataset is more suitable when performing wind resource assessment for the ‘Southwest 2.5 GW Offshore Wind Power Project’, which is currently underway strategically in South Korea. The evaluatio...
Article
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The need for high-resolution wind resource maps is increasing with the increase in the supply and development of wind power. Many physical downscaling models have been developed and applied to make these maps. However, as the existing models require extensive computations and time, statistical models with higher efficiency are being studied. Statis...
Article
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With the accelerated development of science and technology across fields, publications in almost all fields have increased exponentially every year. According to the Scopus search, the number of papers related to buildings and solar energy that used machine learning has grown at an average annual rate of 16.1%, exceeding 3000 publications since 201...
Article
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To be feasible, a master plan for renewable energy development should be based on reliable resource assessments. In particular, to reach carbon neutrality, long-term renewable energy potential prospects by 2050 are required. Such assessment is key to establish a future resource model by defining a proper future prospect scenario with regard to the...
Article
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In solar resource assessment, the climatological environment of the target area is objectively quantified by the cloudiness or clear sky index, which is defined as the ratio of global horizontal irradiance to clear sky solar insolation. The clear sky model calculates incoming solar irradi-ance on the ground surface considering several atmospheric p...
Article
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Optimal dispatch is a major concern in the optimization of hybrid energy systems (HESs). Efficient and effective dispatch models that satisfy the load demand at the minimum net present cost (NPC) are crucial because of the high capital costs of renewable energy technologies. The dispatch algorithms native to hybrid optimization of multiple energy r...
Article
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An accurate prediction of the wind energy production is essential in the initial design process of wind farms. Many researchers use meteorological data obtained from Numerical Weather Prediction (NWP) methods to predict wind energy production. The NWP method does not consider the influence of local topography and surface roughness on wind condition...
Article
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As offshore wind and wave energy technologies are attracting larger attention, various energy devices have been proposed to extract larger amount of energy from oceans. In the present work, a combined concept consisting of a 5-MW braceless semisubmersible floating offshore wind turbine (FOWT) and a torus-type wave energy converter (WEC) is proposed...
Article
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With the development of solar power generation, the importance of direct normal irradiance is being emphasized. Therefore, previous studies have examined numerous separation models for calculating direct and diffuse irradiance from global horizontal irradiance. These models have recently been applied to data in 1-min units. These have more informat...
Article
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In order to realize carbon neutrality, Korean Government is promoting the development of renewable energy with a focus on solar power and wind power. However, the development of wind power is delayed compared to that of solar power for which the achievements have exceeded the targets. When it comes to onshore wind power, development has been delaye...
Article
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In order to achieve carbon neutrality by 2050, a huge amount of renewable power will be installed to substitute for fossil-fueled power. Since there is a big risk that global climate oscillations may cause large fluctuations in renewable power generation, this study analyzed the correlation between wind resources on the Korean Peninsula and global...
Article
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Although the reanalysis data has low spatial resolution, it can be used for long-term correction of wind resources and high-resolution downscaling in conjunction with numerical weather prediction or computational fluid dynamics. In this study, regression analysis of the global wind speed as a function of topographic factors was carried out, and the...
Article
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To determine the wind turbine class in the offshore of the Korean Peninsula, the reference wind speed for a 50-y return period at the hub height of a wind turbine was estimated using the reanalysis data sets. The most recent reanalysis data, ERA5, showed the highest correlation coefficient (R) of 0.82 with the wind speed measured by the Southwest o...
Article
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The amount of new renewable energy generation is increasing worldwide every year. Among many new renewable energy sources, solar energy generation using solar energy accounts for the highest proportion of new renewable energy generation. There is a variation in power production because solar power generation is more affected by climate conditions c...
Article
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To assess wind resources in a given area, it is necessary to select a representative measurement point by identifying a wind zone where the wind resource characteristics are homogeneous. In this study, to identify the spatial homogeneity of wind resources, it was necessary to test several similarity measures for clustering analysis, such as time-se...
Article
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A photovoltaic-electrolysis-PEM hybrid model was developed for a feasibility study, and simulations of several scenarios in Korea were performed. The solar irradiance was derived from the University of Arizona solar irradiance based on satellite-Korea Institute of Energy Research model which provides the satellite imagery over the Korean peninsula...
Article
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The Korea Institute of Energy Research builds Korean solar irradiance datasets, using gridded solar insolation estimates derived using the University of Arizona solar irradiance based on Satellite-Korea Institute of Energy Research (UASIBS-KIER) model, with the incorporation of geostationary satellites over the Korean Peninsula, from 1996 to 2019....
Article
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The typical meteorological year (TMY) is a key element in the long-term performance predictions of photovoltaic systems. However, there is a loss of some hourly measured weather data during the formation of the TMY dataset owing to a lack of observations. Therefore, various statistical techniques or satellite observations can be utilized to address...
Article
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In order to advance the onshore wind energy siting atlas, we developed the national wind resource classification map using ultra-high resolution wind resource maps and market economics models. The wind resource map was classified into fair and poor class suggesting presence or absence of economic feasibility, and good class in fair class was additi...
Article
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In order to solve the problem of site compatibility, which is the biggest obstacle that delays the dissemination of onshore wind energy, the onshore wind energy siting atlas was developed. This study describes mapping and sensibility analysis of candidate sites based on the site suitability classification of wind resource, 24 environmental regulati...
Article
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This study analyzed the performance decline of wind turbine with age using the SCADA (Supervisory Control And Data Acquisition) data and the short-term in situ LiDAR (Light Detection and Ranging) measurements taken at the Shinan wind farm located on the coast of Bigeumdo Island in the southwestern sea of South Korea. Existing methods have generally...
Article
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Solar forecasting is essential for optimizing the integration of solar photovoltaic energy into a power grid. This study presents solar forecasting models based on satellite imagery. The cloud motion vector (CMV) model is the most popular satellite-image-based solar forecasting model. However, it assumes constant cloud states, and its accuracy is,...
Article
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Given that the integration of renewable energy generation systems may have the potential to satisfy the electrical requirements of remote areas, this paper consists of a feasibility study with the focus on integrating renewable generation into the energy system of Popova Island. It adopts an analytical approach that consists in applying the Monte C...
Article
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The research topics of more than 1,900 wind energy papers registered in the Korean Journal Citation Index (KCI) were modeled into 25 topics using latent directory allocation (LDA), and their consistency was cross-validated through principal component analysis (PCA) of the document word matrix. Key research topics in the wind energy field were ident...
Article
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Recently, satellite-derived solar irradiance data, generated by the Korea Institute of Energy Research, has been opened for public use via the Public Big Data Platform organized by the Ministry of Public Administration and Security. These data are the monthly mean of daily total irradiance for the domain with latitude between 32°N and 40°N and long...
Article
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We evaluated the forecast performance of solar radiation on the Korean Peninsula from the solar radiation data provided by the UASIBS-KIER model of KIER with the solar radiation forecast data generated by the GFS model of the NCEP. In this study, the spatial and temporal downscaling of the GFS model, a cumulative solar radiation forecast model per...
Article
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The concentration performance of a heliostat field consisting of hundreds to thousands of reflectors allows for a deformation-based focus deviation of only 3 mrad or less. The most problematic aspect is the wind load; hence, in this study, the extreme wind speed condition was analyzed. Preceding studies such as field experiments, wind tunnel tests,...
Article
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Typical meteorological year (TMY) data has significant importance for solar resource assessment, as well as for building performance analysis. The necessity of high-accuracy TMY data has been well known for many years for the financial viability of solar long-term planing project as it represents long-term weather features. However, the TMY does no...
Article
Optimization of photovoltaic (PV) panel orientation is a significant part of economic evaluation. However, designing a PV system according to only one theoretical optimal orientation is challenging. Installing a PV panel at a specific orientation can cause low economic efficiency, depending on the features of the area. Therefore, in this study, a n...
Article
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This study aimed to reduce the equipment cost of a heliostat, a key element of tower-type concentrating solar power, by reducing its weight The wind load evaluation of the new model of heliostat, which is 50% lighter than a conventional model and has a reflector sized 16m 2 due to the adoption of a sandwich panel, was carried out using computationa...
Article
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This study aimed to compare and evaluate the suitability of topic modeling techniques such as Latent Semantic Analysis (LSA) and Latent Dirichlet Allocation (LDA) by applying to the research subject extraction of the Journal of the Wind Engineering Institute of Korea. In order to evaluate the similarity between classified topics, a method of correl...
Article
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Day ahead forecast is necessary for the electricity market to stabilize the electricity penetration. Numerical weather prediction is usually employed to produce the solar irradiance as well as electric power forecast for longer than 12 hours forecast horizon. Korea Meteorological Administration operates the UM-LDAPS model to produce the 36 hours fo...
Article
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The Journal of the Korean Solar Energy Society is the first journal in South Korea that adopts wind energy as one of its subjects. Since 2000, more than 140 papers on wind energy have been published in the journal, which accounts for 8.5% of the total publication. However, in recent years, the number of published papers on wind energy has been decr...
Article
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In celebration of the 10th anniversary of the publication of the Journal of Wind Energy, we intend to grasp research trends through a literature review of the journal's papers and seek ways to improve the quality of the journal. The text mining technique was used to extract a document-term matrix, and topic modeling was performed using latent seman...
Article
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Onshore wind resource maps are the primary data for wind farm site prospecting, national renewable energy supply policy and power system network design development. This study discusses appropriate service levels in terms of elements and spatiotemporal resolution in wind resource maps, with a view to improving the wind resource map service in Korea...
Article
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Solar irradiance derived from satellite imagery is useful for solar resource assessment, as well as climate change research without spatial limitation. The University of Arizona Solar Irradiance Based on Satellite–Korea Institute of Energy Research (UASIBS-KIER) model has been updated to version 2.0 in order to employ the satellite imagery produced...
Article
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An UM-WRF numerical weather prediction system was established accommodating Korea Meteorological Agency’s regional/local data assimilation and prediction system, then the wind resource map of the Korean Peninsular for 2010~2018 was produced to analyze inter-annual variability of wind resource. The reliability of the map was validated by comparing w...
Article
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The optimum inclination angle of a solar panel is approximately 30~40 degrees in Korea, which corresponds to Korea’s latitudinal position. With such a steep angle, flow separation is inevitable when wind flows over a solar panel. The present study carried out by Large Eddy Simulations (LES) provides a stable turbulence model for separated flow simu...
Article
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By blocking irradiance, shadows cast by high-rise buildings in urban areas can reduce the power generation efficiency of PV panels installed on low-rise buildings. As the conventionally installed PV panel is not suitable for the urban environment, which is unfavorable for power generating, a more radical solution is required. This study aims to hel...
Article
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A simple yet accurate photovoltaic (PV) performance curve as a function of satellite-based solar irradiation is necessary to develop a PV power forecasting model that can cover all of South Korea, where more than 35,000 PV power plants are currently in operation. In order to express the nonlinear power output of the PV module with respect to the ho...
Article
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Solar energy does not always follow the normal distribution due to the characteristics of natural energy. The system advisor model (SAM), a well-known energy performance analysis program, analyzes exceedance probabilities by dividing solar irradiance into two cases, i.e., when normal distribution is followed, and when normal distribution is not fol...
Article
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This study estimated the available renewable market potential based on Levelized Cost Of Electricity and then assessed the renewable derived energy self-sufficiency for the unit of local government in South Korea. To calculate energy self-sufficiency, 1 km gridded market renewable generation and local government scale of final energy consumption da...
Article
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In this paper, a very new web-based software for renewable energy system (RES) design and economic evaluation was introduced. This solution would provide the precise RES estimation service including not only photovoltaic (PV), wind turbine (WT) and fuel cell (FC) individually but also energy storage system (ESS) as combined forms with PV or WT. The...
Article
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With the opening of the small power brokerage business market in December 2018, the small power trading market has started in Korea. Operators must submit the day-ahead estimates of power output and receive incentives based on its accuracy. Therefore, the accuracy of power generation forecasts is directly affects profits of the operators. The forec...
Article
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For the purposes of this study, a wind tunnel experiment and a numerical analysis during ebb and high tides were conducted to determine the positive and negative effects of wind flow influenced by a seawall structure on the performance of wind turbines installed along a coastal seawall. The comparison of the wind flow field between a wind tunnel ex...
Article
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This study investigates, for the purpose of fog forecasting, the impacts of topography and land use changes on the characteristics of turbulence that directly contribute to the formation and dissipation of fog off the west coast of the Korean Peninsula using the Weather Research and Forecasting model version 3.5.1. During the investigation period,...
Article
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The proportion of solar photovoltaic power generation has steadily increased in the power trade market. Solar energy forecast is highly important for the stable trade of volatile solar energy in the existing power trade market, and it is necessary to identify accurately any forecast error according to the forecast lead time. This paper analyzes the...
Article
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Although the size of the wind turbine has become larger to improve the economic feasibility of wind power generation, whether increases in rotor diameter and hub height always lead to the optimization of energy cost remains to be seen. This paper proposes an algorithm that calculates the optimized hub height to minimize the cost of energy (COE) usi...
Conference Paper
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The renewable energy potentials for the country are very important information for the national renewable energy policy and decision-making. This study investigated the technic-economic potential on the solar thermal technology, three different absorbers (compound parabolic collector, linear Fresnel collector and parabolic trough collector) in Sout...