Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic Modeling
With the extensive application of renewable energy generation, thermal power units are required to participate in peak-regulating operations. The mode of steam distribution significantly influences the economy when the steam turbine operates at a low load. The turbine unit’s governing valve characte...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/15/23/9139 |
| _version_ | 1797463259976040448 |
|---|---|
| author | Lei Zhang Zongliang Qiao Bingsen Hei Youfei Tang Shasha Liu |
| author_facet | Lei Zhang Zongliang Qiao Bingsen Hei Youfei Tang Shasha Liu |
| author_sort | Lei Zhang |
| collection | DOAJ |
| description | With the extensive application of renewable energy generation, thermal power units are required to participate in peak-regulating operations. The mode of steam distribution significantly influences the economy when the steam turbine operates at a low load. The turbine unit’s governing valve characteristics and steam distribution modes are studied in this paper, and the optimal sliding pressure operation curve is derived. Firstly, the theoretical model of the governing stage and the governing valve is derived, and the reliability is verified with field data. Secondly, the overall simulation model of the turbine unit is established, and the turbine off-design performance is analyzed with variable main steam pressure. Finally, the advantages and disadvantages of the three steam distribution modes are discussed thoroughly. The steam distribution modes and optimal main steam pressures are analyzed. The results show that a precise composite sliding pressure operation scheme is recommended, and a sliding pressure operation mode is adopted under 470 MW and constant pressure operation for others. |
| first_indexed | 2024-03-09T17:48:10Z |
| format | Article |
| id | doaj.art-22ba8bf7422544f983e050f0e4985cfd |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T17:48:10Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-22ba8bf7422544f983e050f0e4985cfd2023-11-24T10:55:56ZengMDPI AGEnergies1996-10732022-12-011523913910.3390/en15239139Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic ModelingLei Zhang0Zongliang Qiao1Bingsen Hei2Youfei Tang3Shasha Liu4School of Intelligent Manufacturing, Nanjing Polytechnic Institute, Nanjing 210048, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, ChinaSchool of Intelligent Manufacturing, Nanjing Polytechnic Institute, Nanjing 210048, ChinaWith the extensive application of renewable energy generation, thermal power units are required to participate in peak-regulating operations. The mode of steam distribution significantly influences the economy when the steam turbine operates at a low load. The turbine unit’s governing valve characteristics and steam distribution modes are studied in this paper, and the optimal sliding pressure operation curve is derived. Firstly, the theoretical model of the governing stage and the governing valve is derived, and the reliability is verified with field data. Secondly, the overall simulation model of the turbine unit is established, and the turbine off-design performance is analyzed with variable main steam pressure. Finally, the advantages and disadvantages of the three steam distribution modes are discussed thoroughly. The steam distribution modes and optimal main steam pressures are analyzed. The results show that a precise composite sliding pressure operation scheme is recommended, and a sliding pressure operation mode is adopted under 470 MW and constant pressure operation for others.https://www.mdpi.com/1996-1073/15/23/9139turbinegoverning valvecharacteristic modelsteam distribution modeoptimal steam pressure |
| spellingShingle | Lei Zhang Zongliang Qiao Bingsen Hei Youfei Tang Shasha Liu Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic Modeling Energies turbine governing valve characteristic model steam distribution mode optimal steam pressure |
| title | Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic Modeling |
| title_full | Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic Modeling |
| title_fullStr | Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic Modeling |
| title_full_unstemmed | Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic Modeling |
| title_short | Optimization of Steam Distribution Mode for Turbine Units Based on Governing Valve Characteristic Modeling |
| title_sort | optimization of steam distribution mode for turbine units based on governing valve characteristic modeling |
| topic | turbine governing valve characteristic model steam distribution mode optimal steam pressure |
| url | https://www.mdpi.com/1996-1073/15/23/9139 |
| work_keys_str_mv | AT leizhang optimizationofsteamdistributionmodeforturbineunitsbasedongoverningvalvecharacteristicmodeling AT zongliangqiao optimizationofsteamdistributionmodeforturbineunitsbasedongoverningvalvecharacteristicmodeling AT bingsenhei optimizationofsteamdistributionmodeforturbineunitsbasedongoverningvalvecharacteristicmodeling AT youfeitang optimizationofsteamdistributionmodeforturbineunitsbasedongoverningvalvecharacteristicmodeling AT shashaliu optimizationofsteamdistributionmodeforturbineunitsbasedongoverningvalvecharacteristicmodeling |