Winding structure fault positioning method and device based on parameter identification

• Main Authors: WAN KE, LEI XIAOYAN, CHEN LI, WANG LULU, HUANG JIARUI, QIAN QINGCHUN, ZUO ZHONGQIU, CAO GANG, CHEN SHUJIAO, LI JINYU
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a winding structure fault positioning method and device based on parameter identification. The method comprises the following steps: acquiring actually measured frequency response data of a transformer winding in different states; the method comprises the following steps: constructing a trapezoidal network structure of a transformer winding, and determining initial parameters of elements in the trapezoidal network structure in different states by applying boundary conditions in different states; determining the incidence relation between the unit parameter of each element of the transformer winding unit and the frequency response data by using the voltage and current relation of the trapezoidal equivalent network; constructing an objective function according to the actually measured frequency response data in different states, and identifying the optimal parameters of the trapezoidal network structure element in different states by adopting a parameter identification algorithm accordin