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Title: Distributed plug-and-play optimal generator and load control for power system frequency regulation

A distributed control scheme, which can be implemented on generators and controllable loads in a plug-and-play manner, is proposed for power system frequency regulation. The proposed scheme is based on local measurements, local computation, and neighborhood information exchanges over a communication network with an arbitrary (but connected) topology. In the event of a sudden change in generation or load, the proposed scheme can restore the nominal frequency and the reference inter-area power flows, while minimizing the total cost of control for participating generators and loads. Power network stability under the proposed control is proved with a relatively realistic model which includes nonlinear power flow and a generic (potentially nonlinear or high-order) turbine-governor model, and further with first- and second-order turbine-governor models as special cases. Finally, in simulations, the proposed control scheme shows a comparable performance to the existing automatic generation control (AGC) when implemented only on the generator side, and demonstrates better dynamic characteristics than AGC when each scheme is implemented on both generators and controllable loads. Simulation results also show robustness of the proposed scheme to communication link failure.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3] ;  [4]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Electrical and Computer Engineering
  3. California Inst. of Technology (CalTech), Pasadena, CA (United States). Dept. of Electrical Engineering
  4. Skolkovo Inst. of Science and Technology, Moscow (Russia). Center for Energy Systems
Publication Date:
Report Number(s):
NREL/JA-5D00-71540
Journal ID: ISSN 0142-0615
Grant/Contract Number:
AC36-08GO28308
Type:
Published Article
Journal Name:
International Journal of Electrical Power and Energy Systems
Additional Journal Information:
Journal Volume: 101; Journal Issue: C; Journal ID: ISSN 0142-0615
Publisher:
Elsevier
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; frequency regulation; distributed control
OSTI Identifier:
1437850
Alternate Identifier(s):
OSTI ID: 1437564