TY - JOUR
T1 - Event-based Cubature Kalman Filter for Smart Grid Subject to Communication Constraint
AU - Li, Sen
AU - Li, Zhen
AU - Li, Jian
AU - Wang, Qinglin
AU - Song, Zhuoyue
AU - Chen, Zhen
AU - Sheng, Yongzhi
AU - Liu, Xiangdong
AU - Liu, Yang
N1 - Publisher Copyright:
© 2017
PY - 2017/7
Y1 - 2017/7
N2 - Accurate real-time estimation plays an important role in smart grids. Although various filtering algorithms, such as unscented Kalman filter (UKF), have been proposed for phasor measurement unit (PMU), they occupy huge communication bandwidth without specific concern, which puts heavy burden on the communication network especially when wireless communications are applied. In order to relief this burden, the event-based cubature Kalman filter (EBCKF) is proposed based on event-based schemes in this paper. The event-based strategy guarantees that only the observations containing innovational information are transmitted, and cubature Kalman filter (CKF), which is based on the spherical cubature integration, provides more accurate estimation than UKF. Besides, the design-oriented communication rate is provided corresponding to the event-based strategy design. The proposed filter can effectively reduce the communication rate while ensuring the accuracy of filtering. Finally, the standard IEEE 39-bus system is utilized to verify the feasibility and performance of the proposed method.
AB - Accurate real-time estimation plays an important role in smart grids. Although various filtering algorithms, such as unscented Kalman filter (UKF), have been proposed for phasor measurement unit (PMU), they occupy huge communication bandwidth without specific concern, which puts heavy burden on the communication network especially when wireless communications are applied. In order to relief this burden, the event-based cubature Kalman filter (EBCKF) is proposed based on event-based schemes in this paper. The event-based strategy guarantees that only the observations containing innovational information are transmitted, and cubature Kalman filter (CKF), which is based on the spherical cubature integration, provides more accurate estimation than UKF. Besides, the design-oriented communication rate is provided corresponding to the event-based strategy design. The proposed filter can effectively reduce the communication rate while ensuring the accuracy of filtering. Finally, the standard IEEE 39-bus system is utilized to verify the feasibility and performance of the proposed method.
KW - Event-based cubature Kalman filter (EBCKF)
KW - IEEE 39-bus
KW - communication rate
KW - dynamic state estimation
KW - phasor measurement unit (PMU)
UR - http://www.scopus.com/inward/record.url?scp=85031789839&partnerID=8YFLogxK
U2 - 10.1016/j.ifacol.2017.08.009
DO - 10.1016/j.ifacol.2017.08.009
M3 - Article
AN - SCOPUS:85031789839
SN - 2405-8963
VL - 50
SP - 49
EP - 54
JO - IFAC-PapersOnLine
JF - IFAC-PapersOnLine
IS - 1
ER -