نتایج جستجو برای: hydraulic turbine

تعداد نتایج: 49756  

2013
Ganesh Vyankatesh Patil

This paper presents the study of Simulation of Electro-Hydraulic Turbine Control (EHTC) Systems in the field of Power Generation in MATLAB Simulink. It discussed the Governing system used in Thermal Power Plant with Electro-Hydraulic controller with its design, construction and advantages where it indicates that EHTC System which protects and controls Governing of Steam turbines. This paper ind...

Journal: :Int. J. Adv. Comp. Techn. 2010
J. G. Flores G. Urquiza J. A. Hernandez

Inverse Artificial neural network (iANN) is applied to optimize the parameters for hydraulic turbine runner blades. This proposed method (iANN) inverts the artificial neural network (ANN) and uses an optimization method to find the optimum parameter value (or unknown parameter) for given required conditions. In order to do so, first an ANN, which consists of a feedforward network with one hidde...

2006
C. NICOLET J.-J. HEROU B. GREIVELDINGER P. ALLENBACH J.-J. SIMOND F. AVELLAN

At low flow rate operation, Francis turbines feature a cavitating vortex rope in the draft tube resulting from the swirling flow of the runner outlet. The unsteady pressure field related to the precession of the vortex rope induces plane wave propagating in the entire hydraulic system. The frequency of the vortex rope precession being comprised between 0.2 and 0.4 times the turbine rotational s...

2014
L Y He Z W Wang S Kurosawa

The causes of resonance of a certain model pump-turbine unit during startup process were investigated in this article. A three-dimensional full flow path analysis model which contains spiral case, stay vanes, guide vanes, runner, gaps outside the runner crown and band, and draft tube was constructed. The transient hydraulic excitation force of full flow path was analyzed under five conditions n...

2014
Hang-Seok Choi Y. J. Cho

Renewable energy is derived from natural processes that are replenished constantly. Included in the definition is electricity and heat generated from solar, wind, ocean, hydropower, biomass, geothermal resources, and bio-fuels and hydrogen derived from renewable resources. Each of these sources has unique characteristics which influence how and where they are used. This paper presents the model...

2014
Laxman Poudel Bhola Thapa Bim Prasad Shrestha

Hard particles as Quartz and Feldspar are present in large amount in most of the rivers across the Himalayan basins. In run-off-river hydro power plants these particles find way to turbine and cause its components to erode. Loss of turbine material due to the erosion and subsequent change in flow pattern induce several operational and maintenance problems in the power plants. Reduction in overa...

2017
H K Zhang Z Liang X B Liu D M Liu M G Deng H Y Wang

The efficiency test is an important indicator to evaluate the energy conversion performance of a hydraulic turbine. For hydropower stations which do not have the direct flow measurement conditions, whether the characteristic curve of a turbine obtained through similarity theory conversion by using the comprehensive characteristic curve of the turbine can correctly reflect the operating performa...

2014
Priyabrata Adhikary Susmita Kundu Pankaj Kr Roy Asis Mazumdar

The choice of hydraulic turbine manufacturer and their performance assessment are becoming major challenges. Evaluating product criterion and selecting optimum manufacturer are complicated tasks due to the fact that various criteria or objectives must be considered in the decision making process having various importance. In this study, we proposed a hydro turbine manufacturer selection analysi...

2016
Sanjay Kr. Singh D. Boolchandani S. G. Modani Nitish Katal

This study focuses on multi-objective optimization of the PID controllers for optimal speed control for an isolated steam turbine. In complex operations, optimal tuning plays an imperative role in maintaining the product quality and process safety. This study focuses on the comparison of the optimal PID tuning using Multi-objective Genetic Algorithm (NSGA-II) against normal genetic algorithm an...

2013
Mohsen Saadat Farzad A. Shirazi Perry Y. Li

To achieve both accumulator pressure regulation and generator power tracking for a Compressed Air Energy Storage (CAES) system, a nonlinear controller designed base on an energy based Lyapunov function. The control inputs for the storage system are the pump/motor displacements inside the hydraulic transformer and the liquid piston air compressor/expander. While the pump/motor inside the liquid ...

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