Online Supplementary ADP Learning Controller Design and Application to Power System Frequency Control with Large-Scale Wind Energy Integration

Wentao Guo, Feng Liu, Jennie Si, Dawei He, Ronald Harley, Shengwei Mei

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

The emergence of smart grids has posed great challenges to traditional power system control given the multitude of new risk factors. This paper proposes an online supplementary learning controller (OSLC) design method to compensate the traditional power system controllers for coping with the dynamic power grid. The proposed OSLC is a supplementary controller based on approximate dynamic programming, which works alongside an existing power system controller. By introducing an action-dependent cost function as the optimization objective, the proposed OSLC is a nonidentifier-based method to provide an online optimal control adaptively as measurement data become available. The online learning of the OSLC enjoys the policy-search efficiency during policy iteration and the data efficiency of the least squares method. For the proposed OSLC, the stability of the controlled system during learning, the monotonic nature of the performance measure of the iterative supplementary controller, and the convergence of the iterative supplementary controller are proved. Furthermore, the efficacy of the proposed OSLC is demonstrated in a challenging power system frequency control problem in the presence of high penetration of wind generation.

Original languageEnglish (US)
Article number7124490
Pages (from-to)1748-1761
Number of pages14
JournalIEEE Transactions on Neural Networks and Learning Systems
Volume27
Issue number8
DOIs
StatePublished - Aug 2016

Keywords

  • Approximate dynamic programming (ADP)
  • frequency control
  • online performance improvement
  • power system control
  • supplementary control

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Computer Networks and Communications
  • Artificial Intelligence

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