Title :
The stability of AGC systems with real parameter uncertainties and communication delays
Author :
Liu, M. ; An, H. ; Hao, B. ; Wang, Z. ; Gan, D. ; Hu, S.
Author_Institution :
Jiangsu Electr. Power Res. Inst., Nanjing, China
Abstract :
In this paper, the stability performance of multi-area AGC system with real parameter uncertainties/perturbations and communication delays is analyzed. By virtue of Linear Fractional Transformation (LFT) technique, a M-Δ structure with mixed structured uncertainties is developed. An optimization model to evaluate the delay margins at different parameter perturbations is proposed and an algorithm based on μ analysis and frequency-sweeping test is developed to solve the problem. Frequency analysis and time domain simulation in case studies validate the effectiveness of the proposed method.
Keywords :
delays; perturbation techniques; power generation control; power system stability; smart power grids; time-domain analysis; AGC systems; automatic generation control; communication delays; delay margin; frequency sweeping test; linear fractional transformation technique; multiarea AGC system; optimization model; parameter perturbation; real parameter uncertainty; Delay; Uncertainty; frequency-sweeping test; linear fractional transformation; parameter uncertainty; smart grid; structured singular value; time delay;
Conference_Titel :
Innovative Smart Grid Technologies - Asia (ISGT Asia), 2012 IEEE
Conference_Location :
Tianjin
Print_ISBN :
978-1-4673-1221-9
DOI :
10.1109/ISGT-Asia.2012.6303339
