Journal of Shanghai Jiao Tong University ›› 2025, Vol. 59 ›› Issue (9): 1383-1396.doi: 10.16183/j.cnki.jsjtu.2023.503

• New Type Power System and the Integrated Energy • Previous Articles     Next Articles

Fault Diagnosis Analysis Based on Parameter Identification of Photovoltaic Module

LÜ Yanling1(), ZHONG Chen1, LIU Zhipeng2   

  1. 1 School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
    2 State Grid Heilongjiang Electric Power Co., Ltd. Research Institute, Harbin 150000, China
  • Received:2023-10-02 Revised:2023-12-09 Accepted:2024-01-24 Online:2025-09-28 Published:2025-09-25

Abstract:

To utilize the operation data of photovoltaic(PV) panels for identifying key parameters of PV cells and diagnosing their operation status, the second-order Bézier function is combined with the adaptive war strategy optimization algorithm to obtain the optimal solutions for the five unknown parameters of silicon-based PV cell single diode topology: photogenerated current, diode reverse saturation current, diode ideal factor, series resistance and parallel resistance. The method includes theoretical and simulation analyses of four common faults, namely, shadowing, aging, short-circuit and open-circuit. By comparing the changes of the parameters in the identification results and the types of faults based on experimental validation, it is concluded that there is a certain correspondence between the five parameters of the PV single diode model and the four typical fault types. Additionly, the output behavior of PV modules in different fault types is characterized, which provides a reference for the identification of PV cell faults and the judgment of battery performance.

Key words: photovoltaic (PV) cell, single diode model, parameter identification, fault discrimination, Bézier function, war strategy optimization

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