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Model Predictive Voltage Control of Large-Scale PV or Hybrid PV-BESS Plants...

by Omar Abu Rub, Suman Debnath, Phani Ratna Vanamali Marthi, Maryam Saeedifard
Publication Type
Conference Paper
Book Title
2023 IEEE Conference on Technologies for Sustainability (SusTech)
Publication Date
Page Numbers
75 to 79
Publisher Location
New Jersey, United States of America
Conference Name
IEEE Conference on Technologies for Sustainability (SusTech)
Conference Location
Portland, Oregon, United States of America
Conference Sponsor
Conference Date

Increased penetration level of inverter-based resources (IBRs) and renewable energy in the power grid has called for more requirements from the control of IBRs. In this paper, the voltage-reactive power control of a photovoltaic (PV) power plant or hybrid PV-battery energy storage system (BESS) plant connected to a bulk power grid, whilst meeting the grid requirements, is studied. In this paper, a continuous-set model predictive control (MPC) formulation is proposed for voltage-reactive power control. For the same, an aggregated dynamic PV plant model is developed based on the recursive system equivalencing method. The formulation is then implemented in PSCAD simulation on a 125 MW PV plant or hybrid PV-BESS plant. The MPC implementation achieves 10.13% voltage improvement based on PSCAD simulation results in a balanced fault case study. Simulation results further demonstrate that MPC provides improved voltage support over the conventional proportional-integral (PI) controller post-fault occurrence.