Method for detecting strain of power transformer winding structure based on optical fiber sensing

• Main Authors: JIANG HUI, MA YINGANG, CHANG LI
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2019
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

The invention discloses a method for detecting strain of a power transformer winding structure based on optical fiber sensing. By arranging distributed sensing fibers at a fixed interface of the powertransformer winding structure and a place subject to magnetic field vibration, corresponding strain data are automatically obtained during the operation and transmission process of the power transformer, and the real-time perception of the winding deformation state can be realized by using the strain data to calculate the strain deformation data such as the bending moment and deflection of the transformer winding. 本发明公开了一种基于光纤传感的电力变压器绕组结构应变检测方法，通过在电力变压器绕组结构固定接口处及受磁场力振动处布设分布式传感光纤，使之能够在电力变压器运行及运输过程中自动获取相应的应变数据，然后利用所述应变数据计算出变压器绕组弯矩、挠度等受力变形数据，可实现对绕组受力变形状态的实时感知。