Title :
Energy-based hybrid excitation control for synchronous generators
Author :
Qiao, Wei ; Hui, Qing
Author_Institution :
Dept. of Electr. Eng., Univ. of Nebraska-Lincoln, Lincoln, NE, USA
Abstract :
This paper presents an energy-based hybrid control, which replaces the traditional automatic voltage regulator (AVR) for excitation control of a synchronous generator connected to an infinite power system. The proposed controller is based on energy representation of the power system by using a port-controlled Hamiltonian form. The controller uses a hierarchical hybrid architecture characterized by continuous-time dynamics at the lower level of the hierarchy and logical decision-making units at the higher level of the hierarchy. The lower-level units, i.e., the subcontrollers, are each designed for a power system operating mode and directly interact with the power system to be controlled; while the higher-level decision-making units perform logical checks that identify system mode of operation and activates the corresponding lower-level unit; the activated lower-level unit then executes continuous control actions for the power system. Consequently, the controller can adapt to different power system operating modes. Simulation studies are carried out to show the effectiveness of the proposed controller for excitation control of the synchronous generator.
Keywords :
decision making; machine control; power system control; synchronous generators; voltage regulators; automatic voltage regulator; continuous control actions; continuous time dynamics; energy representation; energy-based hybrid excitation control; hierarchical hybrid architecture; higher level decision making units; logical decision making; port controlled Hamiltonian form; power system control; power system operating mode; synchronous generator; Energy-based hybrid control; excitation control; port-controlled Hamiltonian form; synchronous generator;
Conference_Titel :
Power and Energy Society General Meeting, 2010 IEEE
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4244-6549-1
Electronic_ISBN :
1944-9925
DOI :
10.1109/PES.2010.5589516