Analysis of Design and Operation Performance of Micro Gas Turbine : Part 1 - Performance Analysis Program

ABSTRACT In this study, an in-house program to predict steady state operation of micro gas turbines is constructed using MATLAB. The program consists of two parts: design and off-design simulations. The program is fully modular in its structure, and performance of each component (compressor, combustor, turbine, recuperative heat exchanger and pipe elements) is calculated in a separate calculation module using mass and energy balances as well as models for off-design characteristics. The off-design modules of compressor and turbine use performance maps, which are program inputs. The off-design operation of a micro gas turbine under development was predicted by the program. The prediction results were compared with those by commercial software, and the validity of the in-house program was confirmed. 1. 서 론 최근, 세계적으로 중앙 집중식 발전에서 분산발전으로 관심이 증가되고 있다. 그 이유는 분산발전을 통해 전력손실을 줄이고, 중앙 집중식 발전의 단점인 블랙아웃의 위험성을 줄일 수 있기 때문이다. 풍력, 태양열, 연료전지 등 다양한 분산 발전 시스템 중에서 빠른 응답성과 운전신뢰성, 유지 보수성이 좋은 마이크로 가스터빈이 주목을 받고 있다