Optimal control tuning of a VSC converter for microgrid applications

García-Ceballos, C.; Flórez, Juan José Mora; Pérez-Londoño, Sandra; Rodríguez-García, Luis

doi:10.1109/pepqa.2019.8851553

Cited by 1 publication

(1 citation statement)

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“…is section presents the test results that validate the proposed approach, aiming to adjust the CIDER control parameters within a complex microgrid. Measurements at the CIDERs PCC and PSO are used in this paper considering previous satisfactory results [35], although the proposed approach allows other techniques as these presented in [25].…”

Section: Tests and Discussionmentioning

confidence: 99%

Iterative Approach for Tuning Multiple Converter-Integrated DER in Microgrids

García-Ceballos

Pérez-Londoño

Flórez

2022

International Transactions on Electrical Energy Systems

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This paper proposes an iterative approach to adjust the control parameters of multiple power converters within a microgrid, which operates in grid-connected and grid-islanded modes. The adequate control parameters are determined using an optimisation-based strategy, local measurements, and results obtained in previous algorithm iterations. The proposed objective function is based on the integral time-weighted absolute error (ITAE), modified to improve the microgrid control performance. The proposed approach addresses the control tuning complexity by considering an incremental strategy, starting from adjusting basic microgrids, continuing to the setting of intermediate microgrids, and finalising when the target microgrid control is fine adjusted. The results obtained at the CIGRE LV benchmark microgrid validate the proposal, obtaining during faults, the maximum deviations from rated frequency around 2.2% and 0.3% in grid-islanded or grid-connected cases, respectively. Also, voltage and power references are adequately followed during steady-state regardless of the microgrid operation mode, where the steady voltage profile is below 10% variation. The obtained results demonstrate the proposed approach advantages, which straightforwardly adjust multiple converters integrated into a microgrid. The main contributions are as follows: (a) the microgrid model is not required, and (b) only measurements at the point of common coupling of the distributed energy resource are used; consequently, the proposed tuning approach is especially applicable to complex microgrids. Finally, finely adjusted microgrids are required for further operation or protection studies where complex system configurations are commonly required.

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Section: Tests and Discussionmentioning

confidence: 99%