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신재생발전 확대적용을 위한 ESS와 천연가스발전기의 경제성 평가
주용진,신주곤,서동균,박세익,JOO, YONGJIN,SHIN, JUGON,SEO, DONGKYUN,PARK, SEIK 한국수소및신에너지학회 2018 한국수소 및 신에너지학회논문집 Vol.29 No.4
This paper considers the alternative way to mitigate cost for REC instead of Photovoltaic (PV) panels with Energy Storage System (ESS). This study starts from an economic analysis of a 1 megawatt PV system without ESS. Several assumptions have been applied in consideration of the current domestic situation. Based on this result, the economic efficiency of PV with ESS improved. However, the reliance on government subsidies was very high. The alternative way to cover the fluctuation power from renewable energy was reviewed with economical and technical way. In case the natural gas engine applied to PV, the IRR and Levelized Cost of Electricity (LCOE) can be improved without ESS. And if small amount of additional REC, the IRR can be improved up to investment level.
Study on the Dynamic Simulation for an Integrated Coal Gasification Combined Cycle
주용진(Joo, Yongjin),김시문(Kim, Simoon),이민철(Lee, Minchul),김미영(Kim, Miyeong) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
IGCC (Integrated Gasification Combined Cycle) plants are among the most advanced and effective systems for electric energy generation. From a control perspective, IGCC plants represent a significant challenge: complex reactions, highly integrated control to simultaneously satisfy production, controllability, operability and environmental objectives. While all these requirements seem clearly to demand a multivatiable, model predictive approach, not many applications can be easily found in the literature. This paper describes the IGCC dynamic simulation that is capable of simulating plant startup, shutdown, normal, and abnormal operation and engineering studies. This high fidelity dynamic models contain the detailed process design data to produce realistic responses to process operation and upset. And the simulation is used by engineers to evaluate the transient performance and produce graphical information indicating the response of the process under study conditions.
Process Modeling of IGCC Power Plant using Open-Equation Modeling Framework
김시문(Kim, Simoon),주용진(Joo, Yongjin),김미영(Kim, Miyeong),이중원(Lee, Joongwon) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
IGCC(Integrated Coal Gasification and Combined Cycle) plants can be among the most advanced and environmental systems for electric energy generation from various feed stocks and is becoming more and more popular in new power generation fields. In this work, the performance of IGCC plants employing Shell gasification technology and a GE 7FB gas turbine engine was simulated using IPSEpro open-equation modeling environment for different operating conditions. Performance analyses and comparisons of all operating cases were performed based on the design cases. Discussions were focused on gas composition, syngas production rate and overall performance. The validation of key steady-state performance values calculated from the process models were compared with values from the provided heat and material balances for Shell coal gasification technology. The key values included in the validation included the inlet coal flow rate; the mass flow rate, heating value, and composition of major gas species (CO, H2, CH4, H2O, co₂, H2S, N2, Ar) for the syngas exiting the gasifier island; and the HP and MP steam flows exiting the gasifier island.
최인규(Inkyu Choi),주용진(Yongjin Joo),김시문(Simoon Kim),임건표(Geonpyo Lim),김미영(Miyoung Kim) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
The integrated gasification combined cycle(IGCC) for electrical power generation is emerging as a method which can offer environment-friendly generation from coal. It is widely said to have lower effect on the environment than conventional coal fired power plant. Recently, a process simulation system is implemented for IGCC power plant. This simulator can be used to analyze such dynamic characteristics of the working fluid as pressure, temperature and mass flow. In this paper, the important control circuits of this dynamic simulator and its simulation result are introduced for the important devices in IGCC power plant.