Hierarchical distributed stabilization of power networks
Tokyo Institute of Technology and JST CREST, Tokyo, Japan
a e-mail: email@example.com
Received: 16 January 2014
Revised: 11 June 2014
Published online: 26 September 2014
Large fluctuation of electric power due to high penetration of renewable energy sources such as photovoltaic and wind power generation increases the risk to make the whole power network system unstable. The conventional frequency control called load frequency control is based on PID (proportional-integral-derivative) control or more advanced centralized and decentralized/distributed control. If we could more effectively use information on the state of the other neighbor generators, we can expect to make the whole system more robust against the large frequency fluctuation. This paper proposes a fundamental framework towards the design of hierarchical distributed stabilizing controllers for a network of power generators and loads. This novel type of distributed controller, composed of a global controller and a set of local controllers, takes into account the effect of the interaction among the generators and loads to improve robustness for the variation of locally stabilizing controllers.
© EDP Sciences, Springer-Verlag, 2014