Modern Control System Design for Hydro-power Plant

Open Access
Author:
Ding, Xibei
Graduate Program:
Mechanical Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
None
Committee Members:
  • Alok Sinha, Thesis Advisor
Keywords:
  • robust control
  • sliding mode
  • hydropower
Abstract:
This thesis addresses dynamic model and advance controller design for entire Hydro-power plant. Although hydro-power has the best payback ratio and the highest efficiency in the all electricity generating method due to the constant upgrading turbine, tunnel and reservoir design, most of the plants’ control systems are still using the technique developed in the 60s. It limits the operating range of the system such as specific water flow rate and reservoir level. As energy demands increasing every day, it is necessary to develop more flexible control system for the plants to operate at different situations. The goal of this thesis is to design a nonlinear controller for the hydro-power plant in order to improve its ability to handle different operating conditions. The works is more focus on load frequency control. In order to achieve such goal, the detail dynamic model of hydro-power plant has been studied and presented, especially the turbine penstock transient response. Several advance control algorithms have been implanted on the hydro-power system, such as sliding mode control with , feedback linearization with sliding mode control and second order sliding mode control. The simulation of each controller has been compared with traditional linear optimal controller. The results of this thesis show that the benefits of these advance controllers.