Compensation And Statistic Analysis Of Transient Disturbance Data Of Switching Operations Measured In Substations

Supported by North China Electric Power Group Company Science and Technology Project"Research on The Second System Electromagnetic Interference in Substation", When attenuator's impedance dose not match,the wide-band transfer characteristic of attenuator can not be measured directly based on the theory of scattering parameters.The thesis presents a impedance-measured method.The wide-band transfer characteristic of four attenuator made by our lab was measured with th impedance analyzer.Present a frequency-domain compensation method,then the data accuracy measured in substatiom was proved.For evaluating interference level in substation,the interference data were characteristic analysed.The result can be the reference of the second equipment immunity design.Using Nomal testing and Bessel formula,Raise Time,Peak-peak Value,Band width,Domain Frequency are statistic analyze.