Development of partial discharge model, simulation and measurement

Abstract

In cases, when there are electrically weak areas in solid dielectric materials (most often gaseous or liquid inclusions), partial discharges (PD) can be measured when voltage is applied. Partial discharges cause degradation in insulated materials. The investigation of insulated material behavior under electrical stress and the data obtained from PD measurements provide the possibility to predict dielectric breakdown. PD measurements are affected by electrode arrangements and by measuring circuits (MC). It is very important to investigate the relation between experimental PD data, electrode arrangement and the elements of measuring circuits applying computer mode Is The present paper considers PD behavior of polyethylene voids. Various models have been built using special software tools for analogue design and simulation. The results obtained have been analyzed and discussed i n order to assess the influence of various types of measurement circuits. The data obtained from the model have been compared with the experimental results from polyethylene samples with artificially introduced cylindrical voids subjected to PD. The electrode configuration used is plane-plane, and electrodes are parallel to the cylinder ends of the void. The parameters of the models correspond to the parameters of the experimental set-up.

Analysis of Cavity PD Characteristics’ Sensitivity to Changes in the Supply Voltage Frequency

“…These properties help on further understanding the efficacy of the ABC model in dealing with different parameters. Danikas et al [41] compared the simulated and experimented results from polyethylene samples using artificial cylindrical voids. The PD model used for the simulated results is the ABC model.…”

Experimental study and modeling of partial discharge detection system

“…Simulation of one type of the partial discharge measurement system was performed in [9,10]. In paper [11] the result of simulation of several different partial discharge measurement circuits is shown.…”

Partial discharge measurement and uncertainty analysis based on fuzzy data fusion

“…2, when a PD pulse occur, the device under test voltage is quickly reduced to ΔV. The voltage variation ΔV is defined by [5]:…”

“…Based on this information, and considering the PD measurement circuit presented in Fig. 2, the uncertainty evaluation of the apparent charge is defined in (5), and is obtained from the uncertainties propagation of the individual quantities [6], as presented in (7):…”