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최영도,정솔영,박범준,허진,박상호,윤기갑,Choy, Youngdo,Jung, Solyoung,Park, Beomjun,Hur, Jin,Park, Sang ho,Yoon, Gi gab 한국전력공사 2016 KEPCO Journal on electric power and energy Vol.2 No.4
Recently, the size of wind farms is becoming larger, and the integration of high wind generation resources into power gird is becoming more important. Due to intermittency of wind generating resources, it is an essential to predict power outputs. In this paper, we introduce the basic concept of curvilinear regression, which is one of the method of wind power prediction. The empirical data, wind farm power output in Jeju Island, is considered to verify the proposed prediction model.
허진(Jin Hur),박범준(BeomJun Park),정솔영(SolYoung Jung) 한국조명·전기설비학회 2016 조명·전기설비학회논문지 Vol.30 No.7
As wind power market is increasing, the interest of the system connection technology is also increasing. In order to integrate wind power into electrical grid, it is essential to predict wind power outputs as wind power generator’s outputs is influenced by space-time causes such as wind speed, wind direction, temperature, and etc. Many of wind power predictions use the past data based on time-series. As wind power is influenced by space and time. Therefore, we need to predict wind power outputs using spatial modeling based on geographic information such as longitude and latitude. In this paper, we propose a wind power prediction system based on Ordinary Kriging. The empirical data, Jeju wind farm’s 2014 hourly power output data, is considered to verify the proposed prediction model based on OK.
선형 위상배열 안테나를 이용한 역지향성 크로스아이 구조에 관한 연구
김인선,박진태,김기백,박범준,장연수,Kim, In-seon,Park, Jintae,Kim, Ghiback,Park, Beomjun,Jang, Yeonsoo 한국군사과학기술학회 2020 한국군사과학기술학회지 Vol.23 No.1
This study proposes a novel structure for the cross-eye, one of the representative jamming techniques of monopulse sensors. The proposed jammer tranceivers are composed of multi-channels with phased array antenna. We named this structure PRCJ(Phased array Retrodicetive Cross-eye Jammer). In this structure, formulas for calculating cross-eye gain and distance error are derived. We compare the properties of PRCJ with two-element retrodiredtive cross-eye jammer(TRCJ). PRCJ can achieve higher J/S because this structure can steer the spatially combined jamming signal in the direction of the incident monopulse signal. Because of the multiple channels in the phased array, it also increases the degree of freedom of channel matching. Finally, We preform a statistical analysis of the cross-eye gain according to the amplitude and phase errors. From this results, It has been found that PRCJ can get higher cross-eye gain than TRCJ.
Support Vector Regression 기반의 단기 풍력발전 예측시스템 개발
허진(Jin Hur),박범준(BeomJun Park) 한국조명·전기설비학회 2017 조명·전기설비학회논문지 Vol.31 No.9
Short-term wind power forecasting is a technique which informs system operators of how much wind power can be expected at a specific time. Due to the increasing penetration of wind generating resource into power grids, short-term wind power forecasting is becoming an important issue for grid integration analysis. Generally, regression model is used to forecast short-term wind generation. Regression method is an approach for modeling the relevance between a dependent variable and one or more independent variables. In order to enhance wind power forecasting errors, we propose the short-term wind power forecasting using support vector machine based on linear regression.
Vector Fitting기법을 이용한 필터링 전도체 비발디 안테나의 등가회로 구현
이철수(Cheolsoo Lee),유홍균(Hongkyun Ryu),박범준(Beomjun Park),김인선(Inseon Kim),박주래(Joorae Park) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
An equivalent circuit model is demonstrated of the wideband metallic Vivaldi array antenna with band notched performance using vector fitting technique (VFT). The metal post placed in the resonator for broadband impedance matching is achieved band stop function. A numerical S11 characteristic of the filtering Vivaldi antenna is calculated using CSTMWS and the rational terms are driven using ‘rational’ function of MATLAB. The results of the reflection of the equivalent circuit using ADS, the frequency response of rational terms of VFT and CST-MWS are agreed well each other.