Prediction Based Hierarchical Compensation for Delays in Wide-area Control Systems

Authors

Fang Zhang, Tsinghua University
Lin Cheng, Tsinghua University
Wenzhong Gao, University of DenverFollow

Publication Date

7-2018

Document Type

Article

Organizational Units

Daniel Felix Ritchie School of Engineering and Computer Science, Electrical and Computer Engineering

Keywords

Delays, Downlink, Phasor measurement units, Data processing, Linear feedback control systems, Power system stability

Abstract

The closed-loop delay is one of the most important factors affecting the control performance of a wide-area control system (WACS), due to the network transmission of feedback and control signals. A prediction based hierarchical delay compensation (PHDC) method is proposed in this letter at the data processing level to deal with delays. For the control strategy on the top-level, all feedback and control information are real-time and transparent without consideration of delay. The PHDC method compensates the random and distributed delay effectively and reduces the impact of delays on the control performance.

Publication Statement

Copyright held by author or publisher. User is responsible for all copyright compliance.

Recommended Citation

Zhang, Fang, et al. “Prediction Based Hierarchical Compensation for Delays in Wide-Area Control Systems.” IEEE Transactions on Smart Grid, vol. 9, no. 4, 2018, pp. 3897–3899. doi: 10.1109/tsg.2017.2750405.