Abstract
The frequency of high head pump turbines easily fluctuates under the low head no-load condition, which makes it difficult to achieve the synchronous grid connection. In this study, a new start-up strategy of linkage between misaligned guide vane (MGV) devices and conventional guide vanes is proposed, and the optimal arrangement scheme of MGV devices is selected through experiments. Based on the characteristic method, improved Suter transform and the characteristics of MGV devices, the calculation model of transition process is established. The simulated rotational speed of emergency shutdown process fits well with the field measured data. Under start-up conditions, the newly proposed control law can effectively reduce the fluctuation amplitude of frequency, draft tube inlet pressure and volute inlet pressure, and shorten the synchronization time. Additionally, the newly proposed law can significantly improve the no-load stability of the pump turbine under different head conditions, especially low head conditions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
