TY - GEN
T1 - Decentralized control of DC-segmented power systems
AU - Taylor, Josh A.
AU - Scardovi, Luca
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/1/30
Y1 - 2014/1/30
N2 - Direct current (DC) transmission is highly regarded for its ability to dynamically decouple AC power systems by segmenting them into disjoint networks. Such configurations lead to more efficient power transfers and better oscillation damping, but necessitate controllers with seemingly heavy communication requirements that rely on wide-area measurement systems. This paper shows that DC-segmented power systems are poset-causal, making them amenable to powerful decentralized control techniques that can substantially reduce their communication needs. Specifically, optimal decentralized control is attainable with communication only between AC subsystems that are directly connected by a DC line. The approach explicitly leverages the implied graph structure of power systems with AC and DC lines. Numerical results demonstrate that the decentralized controller achieves nearly the same performance as the optimal centralized controller.
AB - Direct current (DC) transmission is highly regarded for its ability to dynamically decouple AC power systems by segmenting them into disjoint networks. Such configurations lead to more efficient power transfers and better oscillation damping, but necessitate controllers with seemingly heavy communication requirements that rely on wide-area measurement systems. This paper shows that DC-segmented power systems are poset-causal, making them amenable to powerful decentralized control techniques that can substantially reduce their communication needs. Specifically, optimal decentralized control is attainable with communication only between AC subsystems that are directly connected by a DC line. The approach explicitly leverages the implied graph structure of power systems with AC and DC lines. Numerical results demonstrate that the decentralized controller achieves nearly the same performance as the optimal centralized controller.
UR - http://www.scopus.com/inward/record.url?scp=84946685304&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84946685304&partnerID=8YFLogxK
U2 - 10.1109/ALLERTON.2014.7028570
DO - 10.1109/ALLERTON.2014.7028570
M3 - Conference contribution
AN - SCOPUS:84946685304
T3 - 2014 52nd Annual Allerton Conference on Communication, Control, and Computing, Allerton 2014
SP - 1046
EP - 1050
BT - 2014 52nd Annual Allerton Conference on Communication, Control, and Computing, Allerton 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 52nd Annual Allerton Conference on Communication, Control, and Computing, Allerton 2014
Y2 - 30 September 2014 through 3 October 2014
ER -