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Keywords

photovoltaic storage system; primary frequency modulation; collaborative optimization; capacity configuration

Abstract

Existing energy storage configuration methods for photovoltaic （PV） power stations often employ a single type of energy storage and typically overlook the influence of primary frequency modulation signals on the operational state of the storage system.This can lead to a mismatch between the configuration outcomes and actual operational requirements.To enable energy storage systems in PV power stations to simultaneously support peak regulation and frequency modulation, this paper introduces a hybrid energy storage configuration method designed to satisfy the dual functions of peak regulation and primary frequency modulation.Initially, the joint operational mode of the energy storage system and the PV power station is analyzed.Based on the assessment requirements for tracking and frequency modulation as stipulated in the two guidelines issued by National Energy Administration in 2020, a coordinated strategy for the hybrid energy storage system of the PV power station is proposed.Subsequently, a bi-level hybrid energy storage configuration model is developed, considering various operational scenarios including peak regulation, tracking assessment, and primary frequency modulation for PV power stations.Finally, the proposed configuration method is validated using real-world data from an integrated PV-storage experimental facility.The results indicate that the proposed configuration offers superior economic benefits and, when simulated, significantly improves the performance in peak regulation, tracking, and primary frequency modulation.

DOI

10.19781/j.issn.1673-9140.2025.05.016

First Page

173

Last Page

183

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