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공동주택 발코니 PV 연계 가정용 BESS의 에너지 절감 효과 분석
김차년(Kim Cha-Nyeon),엄지영(Eum Ji-Young),김용기(Kim Yong-Ki) 한국태양에너지학회 2020 한국태양에너지학회 논문집 Vol.40 No.3
The government mandates gradually zero energy building and Photovoltaic power generation systems installed in buildings are emerging as the most realistic alternative to increase the independence rate of building energy. In this study, we propose a method to reduce the power consumption of households by increasing the PV capacity of balconies and applying the method used the charged electric power stored in batteries after sunset. In order to evaluate the electric power energy savings of the residential BESS, a balcony PV 1.2 kW and a battery pack 2 kWh were installed for 9 houses in 4 apartments in Seoul and Gyeonggi-do. The BESS is charged when the balcony PV is generated electric power, and when solar power generation is finished, it supplies power to the electric appliances connected to the load. As a result of installing the solar PV module 1.2 kW and 2 kWh class BESS for 3 households located in Seoul and Gyeonggi-do, the average electric power consumption saving rate was 40%. The reduction in electricity consumption in the case of zero generation surplus power by maximizing the utilization rate of BESS has been improved to about 53%. Therefore, in order to increase the self-sufficiency rate of electric energy in apartment houses, it is effective to increase the solar photovoltaic capacity of the balcony and apply the residential BESS. In the future, it is believed that the balcony PV and home BESS will play a key role in achieving mandatory zero-energy housing.
자체기동발전원으로서 BESS의 활용가능성 분석 및 용량 산정에 관한 연구
김차년(Cha-Nyeon Kim),유원근(Won-Kun Yu),김헌태(Heon-Tae kim),이흥재(Heung-Jae Lee) 대한전기학회 2018 전기학회논문지 Vol.67 No.9
So far BESS(Battery Energy storage system) has been widely applied to power systems rapidly. Usually it has been used to regulate the renewable energy output and to adjust the power system frequency. In 2013, EPRI has reported a study of utilizing BESS to replace two black start generators of American Electric Power(AEP) that will be demolished. If the BESS can be used as a self-starting generator, it is possible to shorten the long-distance primary transmission line and shorten the restoration time because BESS is capable of the high-speed start and there is no restriction on the installation position. This paper presents a possibility of using BESS as a self-starting generator by using PSCAD/EMTDC in Korean power systems. Herein, the process to estimated the required capacity of BESS is also presented.
스마트 플러그를 이용한 난방용 전열기 표면온도 제어방법의 실증 효과 분석
구보경(Bo Kyoung Koo),김차년(Cha Nyeon Kim),정진우(Jin Woo Jung),김용기(Yong Ki Kim) 대한설비공학회 2020 대한설비공학회 학술발표대회논문집 Vol.2020 No.6
The purpose of this study is to evaluate the power consumption reduction by surface temperature control by comparing and evaluating the power consumption of electric heated mats with controlled electricity consumption through surface temperature control using smart plugs. As a result, for A House, power consumption of CASE 1 using smart plug was reduced by about 58.2% compared to CASE 2(existing case). And the electricity consumption of CASE 1 was decreased by about 33.6% compared to CASE 2 in B House.