The slow-fast dynamical behaviors of a hydro-turbine governing system under periodic excitations
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-016-3208-0
Abstract: This paper studies the dynamic evolution behaviors of the hydro-turbine governing system by using Adams–Bashforth–Moulton algorithm. Based on the non-autonomous dynamic model of the hydro-turbine governing system, the effects of the frequency and intensity of… read more here.
Keywords: turbine governing; governing system; system; hydro turbine ... See more keywords
Development and Characterization of High-Velocity Flame Sprayed Ni/TiO2/Al2O3 Coatings on Hydro Turbine Steel
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Thermal Spray Technology"
DOI: 10.1007/s11666-019-00918-5
Abstract: Nickel-based coatings deposited by high-velocity flame spray (HVFS) process have been widely used to overcome the slurry erosion in a hydro turbine, where many turbine components are subjected to severe erosion failure. In this work,… read more here.
Keywords: hydro turbine; high velocity; tio2 al2o3; turbine steel ... See more keywords
A method for analysis of head cover deformation and vibration amplitude in Francis hydro-turbine system by combination of CFD and FEA
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-017-0824-7
Abstract: It is of great importance to predict the deformation and vibration characteristics of the hydro-turbine structure accurately for the stable operation when the turbine is running under the alternating load of the flow field. In… read more here.
Keywords: head; hydro turbine; vibration; deformation vibration ... See more keywords
Nonlinear modeling and multi-scale damping characteristics of hydro-turbine regulation systems under complex variable hydraulic and electrical network structures
Sign Up to like & getrecommendations! Published in 2021 at "Applied Energy"
DOI: 10.1016/j.apenergy.2021.116949
Abstract: Abstract In hydropower dominated power systems, low-frequency oscillations (LFO), that challenge the safe and stable operation of the system, occur from time to time. Although the study of system damping is an important way to… read more here.
Keywords: hydro turbine; hydraulic electrical; turbine regulation; network structures ... See more keywords
Dynamic characteristics for a hydro-turbine governing system with viscoelastic materials described by fractional calculus
Sign Up to like & getrecommendations! Published in 2017 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2017.09.052
Abstract: Abstract This paper brings attention to the dynamic characteristics of a hydro-turbine governing system with viscoelastic materials. Fractional calculus is introduced to established a diversified nonlinear mathematical model of a hydro-turbine governing system, considering the… read more here.
Keywords: turbine governing; governing system; viscoelastic materials; system ... See more keywords
Stability performance for primary frequency regulation of hydro-turbine governing system with surge tank
Sign Up to like & getrecommendations! Published in 2018 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2017.09.056
Abstract: Abstract This paper aims to study the stability for primary frequency regulation of hydro-turbine governing system with surge tank. Firstly, a novel nonlinear mathematical model of hydro-turbine governing system considering the nonlinear characteristic of penstock… read more here.
Keywords: turbine governing; governing system; system; hydro turbine ... See more keywords
Dynamic performance analysis of hydro-turbine governing system considering combined effect of downstream surge tank and sloping ceiling tailrace tunnel
Sign Up to like & getrecommendations! Published in 2018 at "Renewable Energy"
DOI: 10.1016/j.renene.2018.06.040
Abstract: Abstract This paper aims to analyze the nonlinear dynamic characteristics of hydro-turbine governing system with downstream surge tank and sloping ceiling tailrace tunnel and reveal their combined effect mechanism on stability. First, the nonlinear mathematical… read more here.
Keywords: hydro turbine; downstream surge; ceiling tailrace; surge tank ... See more keywords
Bursting oscillations in a hydro-turbine governing system with two time scales*
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Physics B"
DOI: 10.1088/1674-1056/26/12/128202
Abstract: A fast-slow coupled model of the hydro-turbine governing system (HTGS) is established by introducing frequency disturbance in this paper. Based on the proposed model, the performances of two time scales for bursting oscillations in the… read more here.
Keywords: bursting oscillations; system; hydro turbine; time scales ... See more keywords
Accurate Parameter Estimation of a Hydro-Turbine Regulation System Using Adaptive Fuzzy Particle Swarm Optimization
Sign Up to like & getrecommendations! Published in 2019 at "Energies"
DOI: 10.3390/en12203903
Abstract: Parameter estimation is an important part in the modeling of a hydro-turbine regulation system (HTRS), and the results determine the final accuracy of a model. A hydro-turbine is normally a non-minimum phase system with strong… read more here.
Keywords: parameter estimation; estimation; system; hydro turbine ... See more keywords