Power Ramp-Rate Control via Power Regulation for Storageless Grid-Connected Photovoltaic Systems

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Hauptverfasser: Riquelme-Dominguez, Jose Miguel, García-López, Francisco de Paula, Martinez, Sergio
Format: Preprint
Veröffentlicht: 2025
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author Riquelme-Dominguez, Jose Miguel
García-López, Francisco de Paula
Martinez, Sergio
author_facet Riquelme-Dominguez, Jose Miguel
García-López, Francisco de Paula
Martinez, Sergio
contents Photovoltaic Power Ramp-Rate Control (PRRC) constitutes a key ancillary service for future power systems. Although its implementation through the installation of storage systems or irradiance sensors has been widely investigated, fewer studies have explored the power curtailment approach. The latter lacks efficiency, as it voluntarily produces power discharges, yet it is a cost-effective solution in terms of capital expenditures. This paper proposes a novel storageless and sensorless photovoltaic PRRC for grid-connected applications in which the photovoltaic power, rather than the voltage, is the controlled magnitude. The aforementioned contribution makes the effective tracking of the power ramp-rate limit possible compared to the existing methods in the literature. The method is assisted by a real-time curve-fitting algorithm that estimates the Maximum Power Point while operating suboptimally. Thus, no direct temperature or irradiance measurement systems are needed. The validation of the proposed PRRC strategy has been tested by simulation and compared to another approach available in the literature, considering real-field highly variable irradiance data. Experimental validation of the proposed strategy has been performed in real time via Controller Hardware-in-the-Loop.
format Preprint
id arxiv_https___arxiv_org_abs_2501_11699
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Power Ramp-Rate Control via Power Regulation for Storageless Grid-Connected Photovoltaic Systems
Riquelme-Dominguez, Jose Miguel
García-López, Francisco de Paula
Martinez, Sergio
Systems and Control
Photovoltaic Power Ramp-Rate Control (PRRC) constitutes a key ancillary service for future power systems. Although its implementation through the installation of storage systems or irradiance sensors has been widely investigated, fewer studies have explored the power curtailment approach. The latter lacks efficiency, as it voluntarily produces power discharges, yet it is a cost-effective solution in terms of capital expenditures. This paper proposes a novel storageless and sensorless photovoltaic PRRC for grid-connected applications in which the photovoltaic power, rather than the voltage, is the controlled magnitude. The aforementioned contribution makes the effective tracking of the power ramp-rate limit possible compared to the existing methods in the literature. The method is assisted by a real-time curve-fitting algorithm that estimates the Maximum Power Point while operating suboptimally. Thus, no direct temperature or irradiance measurement systems are needed. The validation of the proposed PRRC strategy has been tested by simulation and compared to another approach available in the literature, considering real-field highly variable irradiance data. Experimental validation of the proposed strategy has been performed in real time via Controller Hardware-in-the-Loop.
title Power Ramp-Rate Control via Power Regulation for Storageless Grid-Connected Photovoltaic Systems
topic Systems and Control
url https://arxiv.org/abs/2501.11699