Study on Generalized Hamiltonian Model of Hydraulic Generator Unit with Elastic Water Column

In this paper, nonlinear turbine model and hydraulic system which is one penstock one machine dynamic differential equation with elastic water column are combined. Hamiltonian function of hydraulic turbine is constructed. By applying Hamiltonian orthogonal decomposition realization and dissipation realization method, generalized Hamiltonian model of hydraulic turbine is built. Connected with generator third-order Hamiltonian model of single machine infinite bus system, generalized Hamiltonian model of hydraulic generator unit is established. This paper provides certain theory basis for research operation and control dynamics mechanism of hydraulic generator unit in generalized Hamiltonian system framework.

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Hamiltonian Modeling and Structure Modified Control of Diesel Engine

Energies ◽

10.3390/en14072011 ◽

2021 ◽

Vol 14 (7) ◽

pp. 2011

Author(s):

Jing Qian ◽

Yakun Guo ◽

Yidong Zou ◽

Shige Yu

Keyword(s):

Diesel Engine ◽

Control Method ◽

Hamiltonian Function ◽

Model Structure ◽

Structure Modification ◽

Coupling Condition ◽

Engine Operation ◽

Modeling And Control ◽

Hamiltonian Model ◽

And Control

A diesel engine is a typical dynamic system. In this paper, a dynamics method is proposed to establish the Hamiltonian model of the diesel engine, which solves the main difficulty of constructing a Hamiltonian function under the multi-field coupling condition. Furthermore, the control method of Hamiltonian model structure modification is introduced to study the control of a diesel engine. By means of the principle of energy-shaping and Hamiltonian model structure modification theories, the modified energy function is constructed, which is proved to be a quasi-Lyapunov function of the closed-loop system. Finally, the control laws are derived, and the simulations are carried out. The study reveals the dynamic mechanism of diesel engine operation and control and provides a new way to research the modeling and control of a diesel engine system.

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In-Situ Testing of Operation Stability in Hydraulic Turbine Generator Unit

Earth & Space 2008 ◽

10.1061/40988(323)67 ◽

2008 ◽

Cited By ~ 1

Author(s):

Shanshan Wang ◽

Pizhong Qiao

Keyword(s):

Hydraulic Turbine ◽

In Situ Testing ◽

Turbine Generator ◽

Operation Stability ◽

Generator Unit

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

Journal of Loss Prevention in the Process Industries ◽

10.1016/j.jlp.2019.01.002 ◽

2019 ◽

Vol 58 ◽

pp. 1-7 ◽

Cited By ~ 4

Author(s):

Beibei Xu ◽

Diyi Chen ◽

Huanhuan Li ◽

Keyun Zhuang ◽

Xiao Hu ◽

...

Keyword(s):

Risk Factors ◽

Hydraulic Turbine ◽

Turbine Generator ◽

Generator Unit

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Analysis on Equivalence between Transfer Function and Equivalent Circuit Simulation in General Hamiltonian Modeling

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.4896 ◽

2012 ◽

Vol 204-208 ◽

pp. 4896-4899

Author(s):

Jing Qian ◽

Yun Zeng ◽

Li Xiang Zhang ◽

Tian Mao Xu

Keyword(s):

Transfer Function ◽

Equivalent Circuit ◽

Circuit Simulation ◽

Hamiltonian Function ◽

Simulation Method ◽

Generator System ◽

Time Simulation ◽

Internal Parameters ◽

Hamiltonian Model ◽

System Stabilizer

Take generator system included AVR (automatic voltage regulator) and PSS (power system stabilizer) as an example, Using the time simulation method, Study the equivalence between the transfer function model and the equivalent circuit simulation, and establish the corresponding relations between the circuit structures, internal parameters and transfer function parameters, based on the energy of equivalent circuit, the Hamiltonian function of transfer function is derived indirectly, and the Hamiltonian model is established. The study in this paper provides a new way to establish generalized Hamiltonian model for linear system based on transfer function.

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