MPC based coordinated voltage regulation for distribution networks with distributed generation and energy storage system

Yifei Guo, Qiuwei Wu*, Houlei Gao, Xinyu Chen, Jacob Østergaard, Huanhai Xin

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

124 Downloads (Pure)

Abstract

This paper presents a Model Predictive Control (MPC)-based coordinated voltage control scheme for distribution networks with high penetration of distributed generation (DG) and energy storage. In this scheme, the DG units, energy storage devices and on-load tap changer (OLTC) are optimally coordinated to maintain all bus voltages in the network within a permissable range. To better coordinate the economical operation and voltage regulation, two control modes are designed according to the operating conditions. In the preventive mode, the DG units operate in the maximum power point tracking (MPPT) mode. State-of-charge (SoC) of energy storage system (ESS) units and power outputs of DG and ESS units are optimized while maintaining the voltages within the feasible range. In the corrective mode, active power curtailment of DG units is also used as a necessary method to correct the severe voltage deviations. The voltage sensitivity coefficients with respect to the power injections and tap changes are updated in real time using an analytical sensitivity calculation method to improve the computation efficiency. A test system consisting of two 20kV feeders fed from the same substation based on a real distribution network was used to validate the proposed coordinated voltage control scheme under both normal and large-disturbance conditions.
Original languageEnglish
JournalI E E E Transactions on Sustainable Energy
Volume10
Issue number4
Pages (from-to)1731-1739
Number of pages9
ISSN1949-3029
DOIs
Publication statusPublished - 2019

Keywords

  • Active power curtailment
  • Distribution generation (DG)
  • Distribution network
  • Energy storage
  • Model predictive control (MPC)
  • Reactive Power Control
  • Voltage Control

Cite this