Research On Characteristic Analysis And Statistical Method Of Electromagnetic Disturbance

According to the disturbance problems on the secondary equipment caused by the transient voltage, transient current, transient magnetic field, transient electric field,which generated by the operation of disconnector and circuit breaker in substation. Base on the diversity of transient electromagnetic value, typical waveforms and spectrums of switching operation can be got in transient disturbance; next to analyze the disturbance characteristic of time-domain and frequency-domain. Besides, the paper makes a small sample statistic analysis based on statistic theory, utilizes the methods of normality test, such as normal probability test, W-normality test, D-normality test , kurtosis and skewness test, and compares these test methods to get initial conclusions. At last, a software interface about characteristic analysis of the transient electromagnetic disturbance is provided.