Design of additional mix robust governor control for hydraulic turbine generator

2008 ◽  
Author(s):  
Jian Chen ◽  
Gui-shu Liang ◽  
Qing Dong
Keyword(s):  
Hydraulic Turbine ◽  
Turbine Generator

Priority analysis for risk factors of equipment in a hydraulic turbine generator unit

2019 ◽  
Vol 58 ◽  
pp. 1-7 ◽  
Author(s):  
Beibei Xu ◽  
Diyi Chen ◽  
Huanhuan Li ◽  
Keyun Zhuang ◽  
Xiao Hu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hydraulic Turbine ◽  
Turbine Generator ◽  
Generator Unit

Predictive Maintenance Using the Rotordynamic Model of a Hydraulic Turbine-Generator Rotor

1998 ◽  
Vol 120 (2) ◽  
pp. 441-448 ◽  
Author(s):  
Bernhard P. Bettig ◽  
Ray P. S. Han
Keyword(s):  
Numerical Model ◽  
Life Prediction ◽  
Hydraulic Turbine ◽  
Predictive Maintenance ◽  
Maintenance Period ◽  
Turbine Generator ◽  
Generator Rotor ◽  
Online Measurements ◽  
Deterioration Mechanism ◽  
Two Degree Of Freedom

A use of rotordynamic models in predictive maintenance is described in which variables characterizing the state of a deterioration mechanism are determined from online measurements. These variables are trended to determine the rate of deterioration and to perform a simulation to predict either the machine life or the maintenance period. Some useful terms for using models in predictive maintenance are defined and the prediction procedure is described. The procedure is demonstrated with a simple two degree-of-freedom example and the numerical model of an actual hydraulic turbine-generator rotor. Some benefits and problems associated with the implementation of the procedure are then discussed. It is considered that this procedure brings the possibility of a better understanding of deterioration processes and a resulting better life prediction.

scholarly journals Fault diagnosis system for hydraulic turbine generator

2002 ◽  
Vol 122 (4) ◽  
pp. 492-497 ◽  
Author(s):  
Yukiharu Ohga ◽  
Kazuo Moriguchi ◽  
Seiji Honda ◽  
Hiroto Nakagawa
Keyword(s):  
Fault Diagnosis ◽  
Hydraulic Turbine ◽  
Turbine Generator ◽  
Diagnosis System ◽  
Fault Diagnosis System

Transient Performance and Control of Hydraulic Turbine-Generator Units

1981 ◽  
Vol PER-1 (1) ◽  
pp. 21-21
Author(s):  
V. Ramamurthi ◽  
K. Kamachandram ◽  
P. S. Kodandaramaswamy
Keyword(s):  
Hydraulic Turbine ◽  
Transient Performance ◽  
Turbine Generator ◽  
And Control

Modeling the Lateral Vibration of Hydraulic Turbine-Generator Rotors

1999 ◽  
Vol 121 (3) ◽  
pp. 322-327 ◽  
Author(s):  
B. P. Bettig ◽  
R. P. S. Han
Keyword(s):  
Hydraulic Turbine ◽  
Load Test ◽  
Tip Clearance ◽  
Turbine Generator ◽  
Vibration Data ◽  
State Response ◽  
Blade Tip ◽  
Rotor Center ◽  
Model Generator ◽  
Blade Tip Clearance

An extensive hydro-generator rotordynamic model is presented along with a technique for determining imbalances and shaft misalignments using the model and mechanical run vibration measurements. The hydro-generator model combines a finite element rotor model with a finite difference guide bearing model, generator magnetic forces and turbine hydraulic forces to calculate natural frequencies, stability and steady-state response. The complete model allows a great number of inputs including imbalances, rotation speed, guide bearing misalignments, coupling misalignments, bearing clearances, bearing temperatures, generator stator and rotor center misalignments, generator average air gap, generator power output and turbine blade tip clearance, all of which are described in this paper. Finally, the numerical results are compared with vibration data from the mechanical run and load test of an actual hydro generator unit.

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