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태양광발전, 에너지저장, 수요반응자원 연계 지능형 전력망 사업과 사례 분석 연구
서항석(Suh Hang Suk),김용식(Kim Yong Sik) 한국퍼실리티매니지먼트학회 2016 한국퍼실리티매니지먼트학회지 Vol.11 No.2
Smart Grid System is very important system for optimal utilization of electricity. As a point of view of national electricity supply and demand side management, smart grid system acts as the best tool not only to reduce electrical generation, substations and transmission but also to save national energy consumption. In this article, necessities and basic concept of electrical smart grid system including Demand Response are introduced. Demand Response is a change in the power consumption of an electric utility customer to better match the demand for power with the supply. Electric energy can not be easily stored, so utilities have traditionally matched demand and supply by throttling the production rate of their power plants, taking generating units on or off line, or importing power from other utilities. And also, in this article some case studies for Demand Response Projects Including PV and ESS Combined Case are presented.
태양광발전, 에너지저장, 수요반응자원 연계 지능형 전력망 사업과 사례 분석 연구
서항석(Suh Hang Suk),김용식(Kim Yong Sik) 한국퍼실리티매니지먼트학회 2001 한국퍼실리티매니지먼트학회지 Vol.3 No.2
Smart Grid System is very important system for optimal utilization of electricity. As a point of view of national electricity supply and demand side management, smart grid system acts as the best tool not only to reduce electrical generation, substations and transmission but also to save national energy consumption. In this article, necessities and basic concept of electrical smart grid system including Demand Response are introduced. Demand Response is a change in the power consumption of an electric utility customer to better match the demand for power with the supply. Electric energy can not be easily stored, so utilities have traditionally matched demand and supply by throttling the production rate of their power plants, taking generating units on or off line, or importing power from other utilities. And also, in this article some case studies for Demand Response Projects Including PV and ESS Combined Case are presented.
최상현,배철호,정모,경남호,서항석,Choi, Sang-Hyun,Bai, Cheol-Ho,Chung, Mo,Kyong, Nam-Ho,Suh, Hang-Suk 대한설비공학회 2000 설비공학 논문집 Vol.12 No.4
Environmental chamber (EC) is an experimental facility used to analyze the characteristics of thermal response of testing objects by the artificial control of weather conditions. The EC in KIER can simulate the weather conditions by the control of temperature, humidity, and solar radiation. A two-storied testing building is located inside of EC. For the exact thermal response analysis of testing building, monthly or yearly scheduled operations are necessary. Although this long term operation gives the exact experimental data, it requires a high operational cost, long duration, and lots of manpower. Therefore it is necessary to perform the shortened experiments without sacrificing the validity of the obtained results. Since the characteristics of thermal response from the shortened experiments are different from the full time results, the analytical method to analyze the thermal response from the shortened experiments to estimate a full times results is developed in this study. The thermal response of testing building is performed using commercial software TRNSYS.
후면 환기형 BIPV 시스템의 레이놀즈수에 따른 전력 및 열성능 특성에 관한 해석적 연구
박준언(Jun Un Park),서항석(Hang Suk Suh),이성주(Sung Joo Lee),최윤식(Yun Shic Choi) 대한설비공학회 2020 설비공학 논문집 Vol.32 No.7
The purpose of this study was to analyze the electrical and thermal characteristics of the various types of ventilating BIPV systems. Compared with the conventional top and down block off type, the top and down open BIPV system using natural stack effect and mechanical ventilating type has potential to improve the conventional block off type BIPV systems’ in-site various problems like PV cell high temperature. These kinds of conventional block off BIPV have low efficiency power production and shut-off at the junction box for high humidity ratio environment condition. Hence, it is critical to compare the PV cell temperature, efficiency, and power production between the mechanical ventilating type BIPV and the conventional block off and natural ventilating type BIPV system. For this purpose, the IPMVP OPTION D analytical program TRNSYS and the type 567 model based on the Sandia model were used and the PV cell temperature, PV electricity efficiency, and BIPV system useful energy rate were estimated with different Reynolds number cases, such as the natural ventilation and the forced mechanical ventilation flow. As for results, first at the BIPV electrical point of view, the Reynolds number increasing led to lower PV cell temperature, higher PV efficiency, and higher PV power production. Especially, the maximum BIPV cell temperature occurred at 12 am on October 3. At that time, at each case-1 (Reynolds number 0) and case-9 (Reynolds number 30,304), the respective PV cell temperature value showed 67.6℃ and 36.3℃, respectively, and the corresponding PV efficiency indicated 8.0% and 12.3%, respectively. The individual PV production power value marks were 59.5 kW and 91.9 kW. Second, at the PV thermal view point, increasing Reynolds number induces more annually BIPV building heating useful energy. Particularly at each case-1 (Reynolds number 0) and case-9 (Reynolds number 30,304), the respective BIPV building heating useful energy showed 0 kWh/yr and 7,514 kWh/yr.