Bang-Bang control of active and reactive powers in photovoltaic power plants for transient stability improvement and oscillation damping

•The new Half Cyclic Operation (HCO) method is based on Bang-Bang control of PVPP active and reactive power which performs damping operations in just half of cycles.•The proposed control method does not need any power curtailment in steady state, so, is economically viable.•Improving transient stabi...

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Bibliographic Details
Published in:Solar energy 2023-02, Vol.251, p.146-157
Main Authors: Sarbazi, Jafar, Maleki, Sajjad, Amini, Mohammad
Format: Article
Language:English
Subjects:
Active power
Bang-Bang control
High PV penetration
Large scale PV
Reactive power
Transient stability
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Summary:•The new Half Cyclic Operation (HCO) method is based on Bang-Bang control of PVPP active and reactive power which performs damping operations in just half of cycles.•The proposed control method does not need any power curtailment in steady state, so, is economically viable.•Improving transient stability margin in successive faults without becoming saturated, loosing capability of oscillation mitigation or causing frequency excursion.•Fast response to faults and quick retorn to pre-fault operation point which is crucial in grids with high level of renewable penetration.•IEEE 9-bus and IEEE 39-bus test systems are used for representing new control method performances. This paper utilizes the fast response capability of the photovoltaic power plants (PVPPs) in providing active and reactive power to increase transient stability margin and oscillation damping in the power system along with improving energy conversion efficiency. The new half cyclic operation (HCO) method is based on the Bang-Bang control of active and reactive power in PVPPs, which does not need any power curtailment. While oscillation is detected, the control system starts to sequentially half-cyclic switch the control system between stability mode and maximum power point tracking (MPPT) mode. Switching between MPPT and stability modes helps with energy conversion efficiency increment, rotor oscillation damping, and transient stability improvement. This strategy automatically leads the operation point to MPPT as oscillation gets mitigated. IEEE 9-bus and IEEE 39-bus test systems are used for representing new control method performances. The obtained results prove the effectiveness of the proposed strategy.
ISSN:0038-092X
1471-1257
DOI:10.1016/j.solener.2023.01.015