Hierarchical voltage control of weak subtransmission networks with high penetration of wind power

Zhiyuan Tang, David J. Hill, Tao Liu, Haomin Ma

Research output: Contribution to journalArticleResearchpeer-review

25 Citations (Scopus)

Abstract

In this paper, we propose a novel coordinated control framework to handle negative voltage impacts caused by wind power in a weak subtransmission system. The designed controller addresses the problem of optimal coordination of controls with different response time and control characteristics. In our control design, the traditional voltage regulators (TVRs) such as on-load tap changers and capacitors are primarily used to regulate voltages in the network. If the control actions of TVRs cannot meet the control requirements, an event-triggered load-side aggregate controller will be activated immediately to help regulate voltages. The control schedules of TVRs are calculated through a multitimestep optimization-based model-predictive control method and are updated with the help of wind power predictions. The load-side controller is realized by controlling active power consumptions of load aggregators through an optimal distributed algorithm that relies on local information exchanges between neighboring load aggregators. The effectiveness of the proposed control scheme is tested through a case study on a modified IEEE 30-bus test system with high penetration of wind power.

Original languageEnglish
Pages (from-to)187-197
Number of pages11
JournalIEEE Transactions on Power Systems
Volume33
Issue number1
DOIs
Publication statusPublished - Jan 2018
Externally publishedYes

Keywords

  • Coordinated voltage control
  • Demand control
  • Distributed optimal control
  • Model predictive control
  • Subtransmission system
  • Wind power

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