MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202531006694 A) filed by Indian Institute Of Technology, Kharagpur, West Bengal, on Jan. 27, 2025, for 'advanced method for multi-winding fault detection with disk-space variation and inter-turn shorting in ynyn transformer using composite frequency response.'
Inventor(s) include Sourav Mitra; and Saurav Pramanik.
The application for the patent was published on Feb. 27, under issue no. 09/2026.
According to the abstract released by the Intellectual Property India: "The present invention provides a method for identifying faulty windings in a three-phase YNyn transformer, comprising using a ladder-network model structure for the YNyn transformer, wherein each phase includes two ladder networks corresponding to the high-voltage (HV) and low-voltage (LV) assemblies that are inductively and capacitively coupled; sequentially and selectively exciting all six phase terminals associated with the ladder networks to obtain driving-point admittance (DPA) measurements; and estimating the equivalent winding inductance Leq from characteristic features of the DPA magnitude response and comparing the estimated Leq with the corresponding value under healthy conditions to identify single or multiple faulty windings, wherein the magnitude of change in Leq for each winding over successive DPA measurements is used to qualitatively assess fault severity associated with axial displacement (AD), disk-space variation (DSV), inter-turn shorting (IS), or combinations thereof."
Disclaimer: Curated by HT Syndication.
