TY - JOUR
T1 - Decentralized event-triggered frequency regulation for multi-area power systems
AU - Yang, Luwei
AU - Liu, Tao
AU - Hill, David J.
N1 - Funding Information:
This work was supported by the Research Grants Council of the Hong Kong Special Administrative Region under the Theme-Based Research Scheme through Project No. T23-701/14-N and General Research Fund Through Project No. 17256516 . The material in this paper was not presented at any conference. This paper was recommended for publication in revised form by Associate Editor Florian Dorfler under the direction of Editor Christos G. Cassandras.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/4
Y1 - 2021/4
N2 - To achieve a better frequency control performance for multi-area power systems, this paper proposes a novel decentralized event-triggered control (ETC) algorithm for automatic generation control (AGC) to replace the traditional periodic sampling/communication mechanism. For each control area, decentralized event-triggering conditions that only depend on locally available information are designed for the control center to determine time instants when to sample the frequency and for each communication channel to decide instants when to broadcast corresponding information. Further, a strictly positive dwell time is introduced to prevent Zeno behaviors. Small disturbance frequency stability of the interconnected power network under the developed ETC law is analyzed, and a sufficient stability criterion on the selection of event-triggered parameters is established. Case studies on a three-area test system illustrate the effectiveness and efficiency of our method.
AB - To achieve a better frequency control performance for multi-area power systems, this paper proposes a novel decentralized event-triggered control (ETC) algorithm for automatic generation control (AGC) to replace the traditional periodic sampling/communication mechanism. For each control area, decentralized event-triggering conditions that only depend on locally available information are designed for the control center to determine time instants when to sample the frequency and for each communication channel to decide instants when to broadcast corresponding information. Further, a strictly positive dwell time is introduced to prevent Zeno behaviors. Small disturbance frequency stability of the interconnected power network under the developed ETC law is analyzed, and a sufficient stability criterion on the selection of event-triggered parameters is established. Case studies on a three-area test system illustrate the effectiveness and efficiency of our method.
KW - AGC
KW - Decentralized control
KW - Event-triggered control
KW - Power system frequency regulation
UR - http://www.scopus.com/inward/record.url?scp=85099885712&partnerID=8YFLogxK
U2 - 10.1016/j.automatica.2020.109479
DO - 10.1016/j.automatica.2020.109479
M3 - Article
AN - SCOPUS:85099885712
SN - 0005-1098
VL - 126
JO - Automatica
JF - Automatica
M1 - 109479
ER -