Title :
Robust stability control of power systems based on WAMs
Author :
Hu, Zhijian ; Fan, Ruguo
Author_Institution :
Sch. of Electr. Eng., Wuhan Univ., Wuhan
Abstract :
A wide-area adaptive supervisory controller (WAASC) to enhance the damping of inter-area oscillations of multi-machine power systems using wide area measurement system (WAMs) is proposed. A damping controller based on the mixed-sensitivity linear matrix inequality (LMI) approach with pole-placement restriction is designed. WAASC uses the input information from located phase measurement units (PMU) in the system and dispatches supplementary control signals to the available local controllers. The design of WAASC is explained in detail and balanced truncation technology is used to reduce the orders of the original model and the controller. Its performance is validated by time domain simulations on a 4-machine 2-area test system.
Keywords :
linear matrix inequalities; phase measurement; power system control; power system measurement; power system stability; robust control; four-machine two-area test system; interarea oscillations; mixed-sensitivity linear matrix inequality; multi-machine power systems; phase measurement units; robust stability control; time domain simulations; wide area measurement system; wide-area adaptive supervisory controller; Adaptive control; Control systems; Damping; Power system control; Power system measurements; Power system stability; Power systems; Programmable control; Robust stability; Wide area measurements; H-infinity control; LMI; PMU; WAMs; Wide area adaptive supervisory controller (WAASC); inter-area oscillations;
Conference_Titel :
Control and Decision Conference, 2008. CCDC 2008. Chinese
Conference_Location :
Yantai, Shandong
Print_ISBN :
978-1-4244-1733-9
Electronic_ISBN :
978-1-4244-1734-6
DOI :
10.1109/CCDC.2008.4598154