TY - GEN
T1 - Improving grid resiliency using hierarchical wide area measurements
AU - Zhang, Song
AU - Vittal, Vijay
PY - 2013
Y1 - 2013
N2 - Communication systems are required to transmit wide area measurements which could be used to more effectively damp the inter-area oscillations caused by increasing penetration of renewable resources and resulting uncertainty. Controls that use wide area signals, however, are not always reliable since communication systems are vulnerable to disruptions. As a result of which the power system reliability could also be vulnerable. To counteract communication failures, this paper presents an approach to build resiliency in the physical system by designing a robust control framework that incorporates a hierarchical set of control signals. This framework consists of multiple single-input-single- output (SISO) supplementary damping controllers (SDCs) associated with a static VAr compensator (SVC). When one signal in the hierarchy fails due to a communication failure, the control automatically utilizes another available signal through an alternative communication route to continue stabilizing the system. Simulations on the IEEE 50-generator system have demonstrated that the proposed control framework stabilizes the system and improves control resiliency in response to communication interruptions.
AB - Communication systems are required to transmit wide area measurements which could be used to more effectively damp the inter-area oscillations caused by increasing penetration of renewable resources and resulting uncertainty. Controls that use wide area signals, however, are not always reliable since communication systems are vulnerable to disruptions. As a result of which the power system reliability could also be vulnerable. To counteract communication failures, this paper presents an approach to build resiliency in the physical system by designing a robust control framework that incorporates a hierarchical set of control signals. This framework consists of multiple single-input-single- output (SISO) supplementary damping controllers (SDCs) associated with a static VAr compensator (SVC). When one signal in the hierarchy fails due to a communication failure, the control automatically utilizes another available signal through an alternative communication route to continue stabilizing the system. Simulations on the IEEE 50-generator system have demonstrated that the proposed control framework stabilizes the system and improves control resiliency in response to communication interruptions.
KW - Communication interruption
KW - H optimal control
KW - delay modeling
KW - hierarchical signals
KW - inter-area mode
KW - resilient control
KW - wide area measurements
UR - http://www.scopus.com/inward/record.url?scp=84893165484&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893165484&partnerID=8YFLogxK
U2 - 10.1109/PESMG.2013.6672307
DO - 10.1109/PESMG.2013.6672307
M3 - Conference contribution
AN - SCOPUS:84893165484
SN - 9781479913039
T3 - IEEE Power and Energy Society General Meeting
BT - 2013 IEEE Power and Energy Society General Meeting, PES 2013
T2 - 2013 IEEE Power and Energy Society General Meeting, PES 2013
Y2 - 21 July 2013 through 25 July 2013
ER -