드론 영상의 입체 텍스처 기법을 활용한 VR 기반 점검이력 관리시스템 개발에 관한 연구 : 풍력터빈을 중심으로 한 점검이력 관리시스템 개발에 관한 연구

한인수 경상국립대학교 융합과학기술대학원 2021 국내석사

This paper is to study the technology of inspection and history management systems for wind power that are continuously increasing around the world. In the past, inspections and analysis of major devices in renewable energy system have been operated in an analog way that identifies problems through photography and passive method. To improve this problem, we conduct a study on VR-based inspection history management system using 3D texturing technique of drone image. The paper describes the current status and prospects of wind power, research and development of wind power blade inspection and history management systems, experiments and reviews in the field, and expected effects and future utilization of this technology. In the future, it is expected that the latest technology for inspection and management of renewable system will be secured and introduced to the site through the development research of this system to reduce maintenance costs and power generation costs.

소형 풍력발전시스템에 대한 분산전원으로서의 가능성 분석에 관한 연구

김학균 경상국립대학교 융합과학기술대학원 2023 국내석사

This paper investigates the feasibility of utilizing small wind power generation systems as distributed power sources in apartment houses. Apartment houses, widely used in urban areas, have a significant electricity demand. Therefore, based on wind speed data from the Korea Meteorological Administration in the Gyeongsangnam-do, this study explores suitable apartment houses for implementing small wind power generation systems. This study examines the potential of small wind power systems as a distributed power source by assessing their generation capacity, taking into account the average wind speed from the rooftop of an apartment building and considering IEC regulations. The research findings demonstrate that small wind power generation systems can effectively supply power to apartment houses, making them viable as distributed power sources. By further advancing zero-energy building technologies and providing various incentives, it is possible to expand the adoption of these systems, enabling stable and sustainable power supply while reducing energy costs and minimizing environmental impact.

전력최적화기를 이용한 태양광발전 시스템 실증 연구

전태연 경상국립대학교 융합과학기술대학원 2023 국내석사

This study focuses on investigating equipment failures in photovoltaic systems and conducting a practical study on photovoltaic generation by developing a panel level Distributed Maximum Power Point Tracking(DMPPT) system. As solar energy gains popularity as a renewable energy source, it is important to ensure that the photovoltaic systems are maintained and operated effectively. The study explores the common problems associated with photovoltaic systems and the importance of developing new system in preventing and addressing these issues. The study uses a qualitative approach, drawing on literature review and new technology development. The results indicate that common issues with solar power systems include wiring faults, module damage, and inverter failures. To prevent these issues, regular maintenance is essential. System performance monitoring is essential for maintenance activities. The developed system enables remote monitoring of individual panels, allowing for more precise and efficient operation compared to traditional string level monitoring. The findings of this study can be useful to facility mangers, PV system owners.

연료전지 TYPE별 운영효율 및 문제점 분석 : 국내설치된 연료전지 TYPE별 운영효율 및 문제점 분석

김광우 경상국립대학교 융합과학기술대학원 2021 국내석사

논문에서는 국내에 설치되어 있는 MCFC(용융탄산염형) , PAFC(인산형), SOFC(고체산화물) 연료전지의 설치비 비교분석, 3가지 TYPE별 발전운영 데이터 분석, 발전 수익률을 분석하여 3가지 연료전지 중 가장 효율적인 연료전지를 제시하고 기술개발 방향성을 논의

건설공사의 안전 관련법 개선에 관한 연구

이기필 경상국립대학교 융합과학기술대학원 2024 국내석사

Looking at the recent status of accidents, the number of industrial accident deaths in Korea has been continuously decreasing from 992 in 2014 to 855 in 2020 (11% decrease), but the number of accident deaths in the construction industry has declined from 434 to 458 (5.5% increase). The construction industry accounts for more than 50% of all industrial accident deaths. The causes of construction accidents are very diverse, such as the complexity and enlargement of structures due to urban development, insolvent construction and bidding system problems due to low-cost bidding, application of new technologies and new construction methods, and inadequate systems that do not reflect construction site conditions. This study compares and analyzes the contents of the Occupational Safety and Health Act and the Construction Technology Promotion Act, which are representative laws of construction safety management, and seeks to find problems and improvement measures. The first problem is that the Occupational Safety and Health Act marks the construction industry among the entire industries in the law, paying attention to safety management of construction works, and reinforcing the safety management of construction works and supplementing the Occupational Safety and Health Act through the enactment of the Construction Technology Promotion Act. Due to the overlapping part, it takes time to understand the safety management contents of the Occupational Safety and Health Act and the Construction Technology Promotion Act. In addition, there are many foreigners in recent construction workers, which makes it difficult to understand and implement the contents of the law in Korean. Second, the departments in charge of the two laws are set up by the Ministry of Employment and Labor and the Ministry of Land, Infrastructure and Transport, respectively, which lacks efficiency. Third, the two laws have overlapping content, as each law separately stipulates similar tasks for the safety management organization and education at the construction site. Fourth, because risk assessment and safety review are separately conducted by the two laws, consistency and efficiency are insufficient. The Occupational Safety and Health Act prescribes risk assessment and confirmation before or during construction, and safety accident management. The Construction Technology Promotion Act implements a system to remove risk factors before construction by conducting safety reviews when designing construction works. Since the risk assessment and safety review conducted by the two laws are carried out by each of the two departments, feedback for safety management is difficult and consistent measures are difficult when problems arise, so it is judged that the efficiency of the results obtained by implementing the system for safety management is insufficient. Fifth, it takes a lot of time to implement the administrative procedure, as it is necessary to obtain approval of a hazard prevention plan and safety management plan with similar contents from each of the two organizations. Sixth, systematic and efficient cost execution is difficult due to the dualization of safety management costs. Occupational safety and health management costs in the Occupational Safety and Health Act are calculated by multiplying the construction cost by a certain rate according to the size of the construction, and the safety management costs in the Construction Technology Promotion Act are required to account for the cost required for safety management. The safety management costs stipulated in both laws can be sufficiently duplicated and executed, which is an obstacle to the efficient use of the budget. As an improvement plan, for effective safety management of construction works, the department in charge is unified with the Ministry of Land, Infrastructure and Transport, and the laws are integrated with the Construction Technology Promotion Act.If the accident rate and death rate are similar to the entire industry, safety management in all industrial fields It is reasonable to transfer to the Ministry of Employment and Labor, which is in charge of the job, and take charge of overall industrial safety management. Secondly, it is necessary to integrate the laws and regulations into one, and for detailed information, a plan is needed to make use of the strengths of the construction work safety management of the two laws and to compensate for the shortcomings. 1) The safety management organization follows the name and composition specified in the “Integration Guidelines for Hazard Risk Prevention and Safety Management Plan, 2007” of the Ministry of Land, Infrastructure and Transport. 2) Education is prepared by integrating the contents of the Occupational Safety and Health Act and the Construction Technology Promotion Act. 3) The administrative procedure needs a complementary system that, if the law is integrated, is reviewed by the Ministry of Employment and Labor and approved by the Ministry of Land, Infrastructure and Transport. 4) By unifying safety management costs, we establish reasonable standards for calculating safety management costs. 5) Reinforce feedback by integrating risk assessment and design safety review into one system. As for the improvement plan, it is proposed to revise the Occupational Safety and Health Act and the Construction Technology Promotion Act by referring to similar papers and cases of integration of laws. Since it is considered desirable for each committee member and department in charge to participate. The approximate adjustment bill is the improvement plan by newly establishing the safety management contents expressed in the Construction Technology Promotion Act “Chapter 5 Management of Construction Works, Section 2 Quality and Safety Management of Construction Works” as “Section 3 Safety Management of Construction Works”. Including the information presented in the section suggests a revision. I think a lot of discussion and consultation are needed for the integration of the two laws. Safety accidents in the construction industry may not be reduced if no one makes concessions and only claims my own territory. To reduce safety accidents in the construction industry, it is hoped that the improvement measures that analyze and propose the advantages and disadvantages of representative laws and regulations will be used for safety management in the construction industry. Key words: Occupational Safety and Health Act, Construction Technology Promotion Act, overlapping, legislation integration

수상태양광 친환경(EVA) 부력체에 관한 연구 : 수상태양광 발전설비 태양광 모듈, 구조물 등을 수면으로 플로팅(floating) 하는 친환경 부력체을 중심으로 시험 연구

오국환 경상국립대학교 융합과학기술대학원 2024 국내석사

This study found that the proportion of new and renewable energy power generation facilities to achieve the carbon neutral 2030 national greenhouse gas reduction goal has increased very rapidly in the case of solar power generation facilities over the past five years, leading to ground collapse due to heavy rain due to indiscriminate destruction of forests, farmland, and forests. Meanwhile, floating solar power generation is rapidly emerging as an alternative technology to land-based solar power generation around the world, and there are many advantages to developing and operation floating solar power, but it is a buoyant body that floats solar power modules and structures such as typhoons, tsunami, and wave heights. Research and development is actively underway, and in particular, as damage to buoyancy bodies, which is a vulnerability of floating solar power generation facilities, has been highlighted as a cause of eco-friendly(EVA) buoyancy bodies to improve buoyancy excellence was also achieved in various aspects such as resilience, environmental friendliness, maintenance, and durability

미이용 산림바이오매스 활용에 따른 목재펠릿 발전소의 경제성 분석

김수근 경상국립대학교 융합과학기술대학원 2023 국내석사

We analyzed the marginal fuel cost of unused forest biomass (domestic wood pellets) based on the SMP and REC outlook of the biomass power plants, A Power Generation Company and B Power Plant. We conducted a price comparison based on the REC weighting changes to achieve economic feasibility compared to imported wood pellets and unused domestic forest biomass (domestic wood pellets) in view of the future price outlook. As a result, when the weighting of unused forest biomass is adjusted from the current 2.0 to 2.25, it is projected that in 2023, imported wood pellets will cost 320,000 KRW/ton, and domestic wood pellets will cost 314,000 KRW/ton. In 2024, imported wood pellets will cost 330,000 KRW/ton, and domestic wood pellets will cost 321,000 KRW/ton, showing that domestic wood pellets have an economic advantage over imported ones. In recent years, global supply chain restructuring has occurred due to the Russia-Ukraine war and the US-China trade dispute, leading to increased resource security concerns. As a result, the prices of energy raw materials imported into the country have skyrocketed, causing a trade deficit. To address this, it is necessary to increase the self-sufficiency rate of wood pellets (currently 15.9% as of 2022) and secure economic feasibility by adjusting the weighting of unused forest biomass. Additionally, it is expected that the development of the forestry industry will occur through the continuous management and support of unused forest biomass from the perspective of recycling national forest resources, as well as timely policy support from the government.

해양소수력 발전소 방류해수를 이용한 유수식 조류발전시스템 적용에 관한 실증 연구

이재선 경상대학교 융합과학기술대학원 2015 국내석사

Small hydro power is an alternative to solve the depletion of fossil energy and environmental issues. It is devoted by our country as well as around the world. In this research, for the recovery of hydro energy which is dumped through the discharge gate of the Samcheonpo marine small hydro power plant, the vertical shaft 2-axis Cross-Flow-type aberration is produced and installed behind the discharge gate. About this 20 kW low-head hydro-electric machine which is installed, the proof-of-concept experiment which checks the output of power generation in accordance with a discharge gate opening height of marine small hydro power plant at the high tide or low tide of sea level is conducted. As a result, when a discharge gate is opened as much as 30cm, an output performance of running water type small hydro power plant which is installed is satisfied. When a discharge gate is opened as much as 20cm, power generation is generated 12.5% more at low tide than at high tide and when opened as 40cm, power generation is generated 0.8% more. According to the results of the experiment, as a water level of sump is higher, a power output is less affected at the high tide or low tide of sea level

水上太陽光의 安全性과 出力을 考慮한 모듈角度 및 構造의 最適化에 관한 硏究

오형욱 경상대학교 융합과학기술대학원 2019 국내석사

The purpose of this study is to analyze module angle and structure optimization considering safety and output of floating PV System. Safety should be consider first, in order to operate the floating PV system which will install in the southern coast of the typhoon route for 20 years. The main content of this study was to analyze the results with one simulation program to calculate power generation according to tilt angle, and another simulation program was used for verification. The optimum module angle was calculated through structural analysis considering wind speed and typhoon by comparing key factors of major floating PV System installed in domestic. The safety of the optimum module angle was verified by structural analysis of floating PV System. Module angle and structure optimization considering safety and output of floating PV System presented in this study, is expected to be the useful study for stable installation and operation of large scale floating PV System in the future.

풍력발전단지 입지선정을 위한 발전량 예측에 관한 연구 : 풍력발전단지 입지선정 계획은 풍속이 우수한 지역중심으로

최창용 경상국립대학교 융합과학기술대학원 2021 국내석사

This paper deals with the prediction of generation output essential for verifying the feasibility of installed offshore wind power generators. So it is derived a new probabilistic output expression that combines a wind generator output with a generator output characteristic curve. It also explains how wind speeds measured on the ground can be corrected to wind speeds at the height of the wind generator, as the wind speed change depending on the location. This derived output prediction method is applied to the planned wind farms in Joguri and Dapori areas in southern Geoje Island to predict the output. The results and methods in this study are expected to be useful for profitability evaluation of planning new wind farm.