FUZZY LOGIC MODEL FOR CREDIBILITY ASSESSMENT OF THE LIGHTNING SHIELDING FAILURE RATE IN OVERHEAD POWER LINES INTENDED FOR CONNECTING WIND POWER PLANTS TO THE GRID

• Date: 2026
• Main Authors: Kyryk , V., Trotsenko, Y.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2026
• Subjects: fuzzy logic; high-voltage transmission lines; lightning current; lightning protection; shielding failure rate; simulation modeling; wind farms; wind power integration.
• Online Access: https://ve.org.ua/index.php/journal/article/view/608
• Journal Title: Vidnovluvana energetika

A fuzzy logic-based linguistic model is developed to assess the reliability of lightning shielding failure rates in overhead transmission lines connecting wind farms to the grid. The model integrates key parameters, including the probability density of lightning current and the width of the shielding failure zone, to capture their combined effect on line vulnerability. Input and output variables are represented by fuzzy term sets with defined membership functions, and a reduced rule base synthesizes the relationships among variables. Simulation modeling of a 330 kV transmission line demonstrates the response surface and intensity distribution of shielding failure credibility, enabling rapid estimation of failure rates without analytical formalization. The approach can be adapted for high-voltage lines of various classes by adjusting scaling coefficients, providing a practical tool for designing and evaluating lightning protection systems in wind power integration.