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Kim, Hyoungtae,Lee, Sungwoo,Kim, Wook The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.6
A novel integrated optimization method based on the Generalized Bender’s Decomposition (GBD) is proposed to combine both generation and transmission expansion problems. Most of existing researches on the integrated expansion planning based on the GBD theory incorporate DC power flow model to guarantee the convergence and improve the computation time. Inherently the GBD algorithm based on DC power flow model cannot consider variables and constraints related bus voltages and reactive power. In this paper, an integrated optimization method using the GBD algorithm based on a linearized AC power flow model is proposed to resolve aforementioned drawback. The proposed method has been successfully applied to Garver’s six-bus system and the IEEE 30-bus system which are frequently used power systems for transmission expansion planning studies.
HYOUNGTAE KIM 한국산업경영시스템학회 2012 한국산업경영시스템학회 학술대회 Vol.2012 No.추계
Convergence encompasses all those activities required to create additional or innovational values, involving realigning or restructuring among several industries, technologies and services. Those convergence strategies that fail to create these values or innovation will have very small probability of success. In other words, the effective strategies for successful convergence should be able to bring out new values or experiences to customers via product/service innovation or sometimes operational excellences. In 2005, Samsung SDS developed a 6sigma methodology called, SCM 6Sigma, with the similar motivation. In this paper, SCM 6Sigma will be applied to develop effective and concrete convergence strategies.
Hyoungtae Kim,Sungwoo Lee,Wook Kim 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.6
A novel integrated optimization method based on the Generalized Bender’s Decomposition (GBD) is proposed to combine both generation and transmission expansion problems. Most of existing researches on the integrated expansion planning based on the GBD theory incorporate DC power flow model to guarantee the convergence and improve the computation time. Inherently the GBD algorithm based on DC power flow model cannot consider variables and constraints related bus voltages and reactive power. In this paper, an integrated optimization method using the GBD algorithm based on a linearized AC power flow model is proposed to resolve aforementioned drawback. The proposed method has been successfully applied to Garver’s six-bus system and the IEEE 30-bus system which are frequently used power systems for transmission expansion planning studies.
Hyoungtae Kim,Sungwoo Lee,Tae Hyun Kim,Hansol Shin,Wook Kim 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.6
Capacity payment mechanism has been adopted as the incentive scheme to achieve resource adequacy in Korean electricity market, however, the level of capacity price has been controversial due to its insufficient extent to incur financial loss for certain generators. Therefore, a new method is proposed to estimate the proper level of capacity price incorporating profitability of market participants and resource adequacy in this paper. The proposed method is successfully applied to test system based on Korean power system.
Hyoungtae Kim,Wook Kim 대한전기학회 2014 Journal of Electrical Engineering & Technology Vol.9 No.4
A novel integrated optimization method is proposed to combine both generation and transmission line expansion problem considering bus voltage limit. Most of the existing researches on the combined generation and transmission expansion planning cannot consider bus voltages and reactive power flow limits because they are mostly based on the DC power flow model. In this paper the AC power flow model and nonlinear constraints related to reactive power are simplified and modified to improve the computation time and convergence. The proposed method has been successfully applied to Garver’s six-bus system which is one of the most frequently used small scale sample systems to verify the transmission expansion method.
Kim, Hyoungtae,Lee, Sungwoo,Kim, Tae Hyun,Shin, Hansol,Kim, Wook The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.6
Capacity payment mechanism has been adopted as the incentive scheme to achieve resource adequacy in Korean electricity market, however, the level of capacity price has been controversial due to its insufficient extent to incur financial loss for certain generators. Therefore, a new method is proposed to estimate the proper level of capacity price incorporating profitability of market participants and resource adequacy in this paper. The proposed method is successfully applied to test system based on Korean power system.
Kim, Hyoungtae,Kim, Wook The Korean Institute of Electrical Engineers 2014 Journal of Electrical Engineering & Technology Vol.9 No.4
A novel integrated optimization method is proposed to combine both generation and transmission line expansion problem considering bus voltage limit. Most of the existing researches on the combined generation and transmission expansion planning cannot consider bus voltages and reactive power flow limits because they are mostly based on the DC power flow model. In this paper the AC power flow model and nonlinear constraints related to reactive power are simplified and modified to improve the computation time and convergence. The proposed method has been successfully applied to Garver's six-bus system which is one of the most frequently used small scale sample systems to verify the transmission expansion method.
A Study on Interconnecting to the Power Grid of New Energy Using the Natural Gas Pressure
HyoungTae Kim,Hyunseok You,Kyoung‑Shik Choi,한상욱 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.1
When supplying natural gas, KOGAS intends to utilize the new energy by installing a system that runs the generator using the energy generated when the high-pressure natural gas is reduced to low pressure, that is, TEG. In the past, the energy generated by decompressing natural gas in the supply management station was thrown into the air, but by using this to generate electricity, high-quality new energy that does not emit greenhouse gases and consumes fuel is obtained. This paper examines the characteristics of TEG power generation, examines the TEG pilot project and demonstration project conducted by Korea Gas Corporation, and discusses the voltage control scheme and grid interconnection.