Abstract
This paper presents the modelling of the online partial discharge (PD) measurement of the medium voltage (MV) power cable. Recently, PD monitoring trends are rapidly increasing due to high demand on reliable systems. Degradation are mainly due to the presence of PD in the high voltage power equipment used. PD measurement is therefore a highly recommended task to early detection of the degradation insulation for high voltage (HV) equipment in order to avoid breakdowns. Real network modelling is necessary to improvise system design in order to find the efficiency in a real power system network. In this paper, modelling focuses on a real distribution network by applying Rogowski coil (RC) as a detection sensor to trigger PD activity. The simulation is performed to determine the functionality and reliability of the system with the RC application in the network. The analysis is performed in the ATP-EMTP and MATLAB Simulink software environments. In addition, this paper contributed to justify the approach of a simplified PD sensor and measurement system. This PD measurement system provides a complete solution in the context of condition-oriented monitoring for the ability to apply the RC to trigger PD activity in the power distribution network.
Highlights
The condition monitoring system plays an important role in ensuring that the electrical supply network operates efficiently
RESEARCH METHOD realistic findings from partial discharge (PD) measurements and test samples are the main source for research and analysis of the PD phenomenon, modelling and simulation often play an important role in PD studies
The Rogowski coil (RC) [28] is used as a modelling measurement sensor
Summary
The condition monitoring system plays an important role in ensuring that the electrical supply network operates efficiently. Condition-based monitoring of the power system needs the best part and equipment infrastructure that is reliable when efficient maintenance is performed [2]. One of the key components is the MV underground power cable for distribution networks. This element is usually subjected to stress, including electrical, thermal, mechanical and environmental stress, which contributes significantly to the deterioration of its insulation [8,9]. The modelling and simulation of online PD measurements for medium voltage power cables in order to identify the capability of the RC sensor performed in a real network has been successful with the significant PD waveform. It is clear that the RC sensor developed is suitable for use on-site with high advantages for the user
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