期刊
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
卷 59, 期 5, 页码 1177-1189出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAC.2014.2298140
关键词
Decentralized control; optimization; power system control; power system dynamics
资金
- NSF CNS award [1312390]
- NSF NetSE grant [CNS 0911041]
- ARPA-E grant [DE-AR0000226]
- Southern California Edison
- National Science Council of Taiwan R.O.C. [NSC 103-3113-P-008-001]
- Caltech Resnick Institute
- California Energy Commission's Small Grant Program [57360A/11-16]
- Direct For Computer & Info Scie & Enginr
- Division of Computing and Communication Foundations [1144502] Funding Source: National Science Foundation
- Division Of Computer and Network Systems
- Direct For Computer & Info Scie & Enginr [0911041] Funding Source: National Science Foundation
- Division Of Computer and Network Systems
- Direct For Computer & Info Scie & Enginr [1312390] Funding Source: National Science Foundation
We present a systematic method to design ubiquitous continuous fast-acting distributed load control for primary frequency regulation in power networks, by formulating an optimal load control (OLC) problem where the objective is to minimize the aggregate cost of tracking an operating point subject to power balance over the network. We prove that the swing dynamics and the branch power flows, coupled with frequency-based load control, serve as a distributed primal-dual algorithm to solve OLC. We establish the global asymptotic stability of a multimachine network under such type of load-side primary frequency control. These results imply that the local frequency deviations on each bus convey exactly the right information about the global power imbalance for the loads to make individual decisions that turn out to be globally optimal. Simulations confirm that the proposed algorithm can rebalance power and resynchronize bus frequencies after a disturbance with significantly improved transient performance.
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