Most of gas turbine combined cycle power plants are located in urban areas to provide peak load and district heating. However, NOx(nitrogen oxides) of exhaust gas emission from the power plants cause additional fine dust and thus it has negative impact on the urban environment. Although DLN(dry low NOx) and multi-stage combustors have been widely applied to solve this problem, they have another critical problem of damages to combustors and turbine components due to combustion dynamic pressure. In this study, the effect of different fuel ratio on NOx emission and pressure fluctuation was investigated regarding two variable conditions; combustor stages and power output on M501J gas turbine.

Abstract
 1. 서 론
 2. 실험대상 및 방법
  2.1 질소산화물 배출농도 분석
  2.2 연소동압 변화 분석
 3. 결과 및 논의
  3.1 질소산화물 배출농도 영향
  3.2 연소동압 발생 영향
  3.3 질소산화물 배출농도와 연소동압 관계
 4. 결 론
 5. References

• 유원주(한국동서발전(주)) | Won-Ju Yu (Korea East-West Power Co.) Corresponding Author
• 정진도(호서대학교 에너지기후융합기술학과) | Jin-Do Chung (Hoseo University)