Switchgear Model Research Content Creator Assessment
- Country :
Australia
III. Research Content
1. Establish a high-voltage switchgear model and design different insulation fault defects
Through CAD software or Ansys to build the model of high-voltage switchgear. Based on this 3D visualization method, the model simulation of typical structures such as bus bar room and cable room will be carried out. Then, design different discharge signal types for different insulation weak positions in the switchgear structure.
2. Study the transmission characteristics of discharge signals at different insulation weak positions
Study the influence of different discharge frequency, waveform parameters and discharge energy on the propagation characteristics of cable terminal capacitance circuit to ground. Set the sensor, stray capacitance and impedance capacitance. And explore the influence mechanism of different partial discharge signal injection methods, propagation paths and coupling loops..
3. Establish a field-circuit coupling model of the typical insulation structure of switchgear
Based on the study of electromagnetic fields, propose a high frequency current coupling method to earth based on embedded electrodes, and establish a capacitive equivalent circuit model for switchgear or cable terminal through Simulink. Set the coupling capacitance and resistance of the loop, and calculate the SNR (Signal-Noise Ratio). Calculate and optimize the coupling loop parameters by Matlab, and obtain the output characteristics of abnormal discharge signals.
