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재생에너지원 발전 비중 증가로 인한 국내 전력계통 전압불안정 양상 분석
정인주(Injoo Jeong),오승찬(Seungchan Oh),구현근(Hyunkeun Ku),정솔영(Solyoung Jung),이윤선(Yoonseon Lee),이재형(Jaehyeong Lee),이재걸(Jaegul Lee) 대한전기학회 2024 전기학회논문지 Vol.73 No.9
High penetration of renewable energy resources affects several stability problems. There are lots of stability concepts, one of them which is strongly related to renewable energy resources is called the voltage stability. As shown in this paper, voltage instability in transient can be occurred by renewable energy generation increasing. It is necessary to analyze this phenomenon and how to solve the problems effectively. This paper shows how this phenomenon can be interpreted and analyzed according to load model such as constant power model and ZIP model, which is using a specific methodology called YV analysis. Also, by evaluating power flow in the power system, it shows the specific cause of the voltage instability in a specific location. Using the above results, it is suggested how voltage instability can be effectively improved and solved through simulation.
간호대학생의 COVID-19 상황에서 동아리 봉사활동 경험
정인주(Inju Jeong), 허숙(Sook Heo) 다문화건강학회 2023 다문화건강학회지 Vol.13 No.1
Purpose: This study examines the experiences of volunteer activities of nursing students at university clubs during COVID-19 pandemic and proposes how to facilitate such activation in the future. Method: In-depth interviews were conducted enrolling 10 nursing students who had experience in volunteer activities at the university. The collected data were analyzed by a qualitative case study. The analysis classified 13 topics; similar topics were collected and consolidate into 5 categories. Results: The 5 primary categories were ‘Experience various volunteer activity methods’, ‘Opportunity to grow as a nursing major’, ‘Help with interpersonal skills’, ‘Psychological change after volunteer activities’, and ‘Efforts to vitalize volunteer activities’. Conclusion: The significance of this study is that it examines the actual experiences of nursing students participating in club volunteer activities during the COVID-19 pandemic and proposes strategies to promote the activation of such volunteer services based on these findings.