Journal of Siberian Federal University. Engineering & Technologies / Method for Estimating the Service Life of Storage Batteries in Integrated Energy Systems with Renewable Generation

Full text (.pdf)
Issue
Journal of Siberian Federal University. Engineering & Technologies. 2026 19 (4)
Authors
Karamov, Dmitriy N.; Serdyukova, Ekaterina V.; Suslov, Konstantin V.
Contact information
Karamov, Dmitriy N. : Irkutsk National Research Technical University (Irkutsk, Russian Federation); ; Serdyukova, Ekaterina V.: Irkutsk National Research Technical University (Irkutsk, Russian Federation); Melentiev Energy Systems Institute of Siberian Branch of the RAS (Irkutsk, Russian Federation); Suslov, Konstantin V. : Moscow Power Engineering Institute (Moscow, Russian Federation)
Keywords
off-grid power systems; integrated power systems; renewable energy; partial cycles; depth of discharge; alternating power function; life-cycle assessment model
Abstract

This article addresses a key issue in the design and operation of autonomous renewable energy systems: accurately predicting the service life of batteries, which account for a significant share (45– 60 %) of total capital investment. Existing methods for assessing battery service life often oversimplify real-world operating conditions, specifically by assuming a predominance of partial charge- discharge cycles over full ones, leading to inaccurate technical and economic assessments. The study analyzes well-known models, such as the RainFlow calculation method and the Schiffer model, highlighting their limitations. A comprehensive service life assessment methodology is proposed that takes into account actual battery operating modes, characterized by an alternating function of the system’s power. The methodology is based on the identification and modeling of partial cycles, determination of the average annual number of cycles, and the local minimum state of charge. The algorithm relates these parameters to the battery service life characteristic depending on the depth of discharge. The presented approach enables a more realistic, albeit pessimistic, assessment of battery life, which facilitates the optimization of system configuration and operating modes to minimize lifecycle costs. The method is universal and can be applied to various battery technologies, making it a valuable tool for planning and developing off-grid power systems

Pages
467–475
EDN
QJXYQN
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/158566

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