Research on Power Grid Operation Safety Detection Based on Electric Field Strength Measurement
To effectively reduce the occurrence of power grid operation safety accidents,a power grid operation safety detection method based on multi-dimensional electric field strength measurement is researched and developed.The three-dimensional spherical sensor electric field intensity measuring instrument is used to collect electric field intensity signal,the collected electric field signal data is then fused by Bayesian estimation algorithm,and the noise of electric field intensity signal is removed by second generation wavelet transform.The feature vectors of the denoised electric field intensity signals are extracted with the piecewise polymerization approximate representation method,and the time series features are obtained,which are then input into the support vector machine classifier to identify the voltage intensity levels.The obtained voltage level is compared with the alarm threshold to judge whether there is a risk in the power grid area.The experimental results show that the electric field intensity curve collected by this method almost coincides with the actual electric field intensity curve,and the data denoising effect is good.It can detect different levels of risks in the process of power grid operation and reduce the occurrence of power grid operation risk accidents.
multidimensional electric field intensitystrength measurementgrid operationsafety inspectionwavelet transform
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