Wide-Area Damping Controller for Power System Interarea Oscillations: A Networked Predictive Control Approach

Wide-area damping controller (WADC) requires communication networks to transmit remote signals. The usage of communication networks will introduce time delays into the control loop of the WADC. Ignoring this time delay would deteriorate the damping performance provided by the WADC or even cause the...

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Bibliographic Details
Published in:IEEE transactions on control systems technology 2015-01, Vol.23 (1), p.27-36
Main Authors: Yao, Wei, Jiang, Lin, Wen, Jinyu, Wu, Qinghua, Cheng, Shijie
Format: Article
Language:English
Subjects:
Case studies
Control systems
Damping
Delay compensation
Delay effects
Delays
interarea oscillations
Mathematical model
model identification
networked predictive control (NPC)
Oscillators
Power system stability
Predictive control
Predictive models
wide-area damping controller (WADC)
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Summary:Wide-area damping controller (WADC) requires communication networks to transmit remote signals. The usage of communication networks will introduce time delays into the control loop of the WADC. Ignoring this time delay would deteriorate the damping performance provided by the WADC or even cause the whole system instability. This paper employs networked predictive control (NPC) to design a WADC for the generator exciter to enhance the damping of interarea oscillations in a large-scale power system. The NPC incorporates with a generalized predictive control (GPC) to generate optimal control predictions, and a network delay compensator to detect and compensate both constant and random delays. Moreover, model identification is used to obtain an equivalent reduced-order model of the large-scale power system and deal with the model uncertainties and variation of operating conditions. Case studies are based on the New England 10-machine 39-bus system. Effectiveness of the proposed WADC is verified by simulation studies and compared with a conventional WADC and a GPC-based WADC without delay compensation.
ISSN:1063-6536
1558-0865
DOI:10.1109/TCST.2014.2311852