NDLI: Distributed event-triggered scheme for economic dispatch in power systems with uncoordinated step-sizes

Content Provider	IET Digital Library
Author	Wang, Jinmeng Li, Huaqing Wang, Zheng
Abstract	Considering potential applications in power systems, economic dispatch problem (EDP) in time-varying balanced communication networks is studied, aiming to minimise the total cost of generating electricity. This is equivalent to dealing with the problem of optimising the sum of local functions while a single generator possesses only its local function. The variables of generators, satisfying some local constraints, are coupled by a linear constraint. In order to resolve the EDP, the authors design a fully distributed primal-dual optimisation algorithm with time-varying uncoordinated step-sizes. In consideration of saving computation and communication resources, an event-triggered scheme is introduced into the algorithm, based on which each generator is only allowed to interact with their neighbouring generators at some independent event-triggered sampling time instants. The proposed algorithm is able to achieve a linear convergence rate under the strong convexity and smoothness of the local objective functions. The Zeno-like behaviour is rigorously excluded, which means that the interval between any two consecutive sampling time instants of each generator is not less than two. Effectiveness of the algorithm and correctness of the theoretical analysis are verified by numerical experiments.
Starting Page	3612
Ending Page	3622
Page Count	11
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 16, Aug (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0144
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-07-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Authors Design Communication Resources Computation Consecutive Sampling Time Instants Convergence Convex Programming Distributed Control Distributed Event-triggered Scheme Economic Dispatch Problem EDP Generating Electricity Gradient Method Independent Event-triggered Sampling Time Instants Linear Constraint Linear Convergence Rate Local Constraint Local Function Local Objective Function Multi-robot System Multivariable Control System Neighbouring Generator Optimisation Optimisation Technique Power Generation Dispatch Power System Power System Economics Power System Managemen Power System Operation Primal-dual Optimisation Algorithm Single Generator Time Varying System Time-varying Balanced Communication Network Time-varying Uncoordinated Step-sizes Total Cost
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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