Delay-Dependent Stability Analysis of Load Frequency Control for Power System With EV Aggregator

In this paper, the stability of load frequency control (LFC) for delayed power systems with an electric vehicle (EV) aggregator is studied based on Lyapunov theory and linear matrix inequalities (LMIs). Through mechanism analysis, the LFC of power systems with an EV aggregator based on a proportiona...

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Bibliographic Details
Published inFrontiers in energy research Vol. 9
Main Authors Yuan, Zhe-Li, Xu, Da, Jin, Li, Wang, Hong-Zhang
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 26.10.2021
Subjects
electric vehicles
load frequency control
power system
stability analysis
time delay
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ISSN2296-598X
2296-598X
DOI10.3389/fenrg.2021.771465

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Summary:In this paper, the stability of load frequency control (LFC) for delayed power systems with an electric vehicle (EV) aggregator is studied based on Lyapunov theory and linear matrix inequalities (LMIs). Through mechanism analysis, the LFC of power systems with an EV aggregator based on a proportional–integral–differential (PID) controller is modeled. By constructing a delay interval information correlation functional and estimating its derivative using Wirtinger inequality and extended reciprocally convex matrix inequality, a new stability analysis criterion is proposed. Finally, in order to verify its advantage, the proposed method is used to discuss the influence of EV aggregator gains and PID controller gains on the delay margins for LFC of power systems with EV aggregator participation in frequency regulation.
ISSN:2296-598X
2296-598X
DOI:10.3389/fenrg.2021.771465