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계통연계형 태양광발전시스템의 PSCAD/EMTDC 모델링 및 전력품질 평가 (pp.2193-2194)
설재웅(Jae-Woong Seol),장재정(Jae-jung Jang),김진오(Jin-O Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
This paper presents the results of a grid-connected photovoltaic (PV) system modeling that contain incremental conductance MPPT(Maximum Power Point Tracking) controller by PSCAD/EMTDC simulator and investigates the influence that can occur in the grid-connected PV system from aspect of power quality, i.e. voltage drop, total harmonic distortion(THD) and total demand distortion(TDD). The measured data the PV array modeling of PSCAD/EMTDC in Cheongwadae, Seoul, Korea is used in the paper.
증분컨덕턴스 MPPT제어 기반 계통연계형 태양광발전시스템의 전력품질 평가
薛在雄(Jae-Woong Seol),章在正(Jae-Jung Jang),金東珉(Dong-Min Kim),李丞爀(Seung-Hyuk Lee),金鎭吾(Jin-O Kim) 대한전기학회 2007 전기학회논문지 Vol.56 No.1
During the last years, there has been an increased interest in the new energy such as photovoltaic(PV) system from the viewpoint of environmental pollution. In this regard, this paper estimates the power quality of grid-connected PV system. As the maximum power operating point(MPOP) of photovoltaic(PV) power systems alters with changing atmospheric conditions, the efficiency of maximum power point tracking(MPPT) is important in PV power systems. Moreover, grid-connected PV system occurs some problems such as voltage inequality and harmonics. Therefore, this paper presents the results of a grid-connected PV system modeling that contains incremental conductance MPPT controller by PSCAD/EMTDC simulator and investigates the influence that can occur in the grid-connected PV system from aspect of power quality, i.e. voltage drop, total harmonic distortion (THD) and total demand distortion(TDD). For the case study, the measured data of the PV array in Cheongwadae, Seoul, Korea is used.
04 포스터 발표 : 대기 환경 분야(PA) ; PA-05 : 산화타이타늄 광 촉매 분해작용에 의한 sulfamethoxazole (SMX)과 그의 산화물의 급성독성 평가
조일규 ( Il Kyu Cho ),조인선 ( In Sun Cho ),설재웅 ( Jae Woong Seol ),간은성 ( Eun Sung Kan ) 한국환경농학회 2015 한국환경농학회 학술대회집 Vol.2015 No.-
The widespread detection of pharmaceutically active compounds, including many synthetic antimicrobial agents, in aquatic environments is raising public health concerns. As a result, there is growing interest in the development of innovative technologies to efficiently transform these compounds to non-toxic and pharmaceutically inactive byproducts. This work examines the photocatalytic degradation of sulfamethoxazole (SMX) and its oxidation products (Hydroxslated SMX, Dihydroxslated SMX and 3-amino 5-methylisoxazole) in aqueous suspensions of nanophase titanium dioxide (TiO2). Experimental results demonstrate that SMX is mineralized by TiO2 irradiated with ultraviolet-A light (UVA: 324≤λ≤400 nm). The acute toxicity of the SMX and its oxidation products were tested using 24 h born Daphnia magna at various dilutions based on the procedure as OECD Guideline 202. The EC50 (%) of 10 mg/kg SMX solution without any photocatalyst (A), 10 mg/kg SMX solution exposed with UV light (B), 10 mg/kg SMX solution exposed with solar light (C) and 10 mg/kg SMX solution treated by solar light with bicarbonate (HCO3 .) as an enhancer for photocatalytic reaction (D) were 74.8, >100.0, >100.0 and 37.5, respectively. The residue of SMX in the A, B, C and D sample were 11.00, <0.05, <0.05 and 5.00 mg/kg, respectively. Hydroxslated SMX, Dihydroxslated SMX and 3-amino 5-methylisoxazole in the samples were detected below the limit of detection (LOD), which was 0.01 mg/kg. Each UV light & solar photocatalyst showed better removal rate than solar photocatalyst treatment with HCO3.