Loading...

Adaptive delay compensator for the robust Wide-Area damping controller design

Beiraghi, M ; Sharif University of Technology

977 Viewed
  1. Type of Document: Article
  2. DOI: 10.1109/TPWRS.2016.2520397
  3. Publisher: Institute of Electrical and Electronics Engineers Inc
  4. Abstract:
  5. This paper presents an adaptive delay compensator (ADC) on the basis of the latest development in wide-area measurement system (WAMS) to cater to varying latencies. The proposed compensator can effectively reciprocate the phase deviation resulting from varying delays to improve the performance of central wide-area damping controller (WADC). The greatest challenge to continuous delay compensation is the uncertainty regarding the inherent robustness of the central controller. The proposed technique provides an opportunity to epitomize the uncertainty retrieved from phase compensated delay. Next, taking the uncertainty into consideration, the mixed H2H∞ synthesis technique is adopted for the robust design of WADC. The comprehensive case studies are conducted including small signal analysis and nonlinear time domain simulation. Moreover, different delay variation scenarios are investigated and it is confirmed that the proposed scheme accomplishes the desired performance, both in terms of robustness and satisfactory damping action despite the presence of system nonlinearities and time varying delays
  6. Keywords:
  7. Adaptive delay compensation ; Robust controller ; WADC ; Adaptive optics ; Controllers ; Damping ; Electric power system measurement ; Time delay ; Damping controllers ; Delay compensation ; Nonlinear time domain simulations ; Small-signal analysis ; Synthesis techniques ; System nonlinearities ; Time varying- delays ; Wide- area measurement systems (WAMS) ; Time domain analysis
  8. Source: IEEE Transactions on Power Systems ; Volume 31, Issue 6 , 2016 , Pages 4966-4976 ; 08858950 (ISSN)
  9. URL: http://ieeexplore.ieee.org/document/7398179