The Open Electrical & Electronic Engineering Journal

2015, 9 : 342-346
Published online 2015 August 25. DOI: 10.2174/1874129001509010342
Publisher ID: TOEEJ-9-342

Partial Discharge Fault Decision and Location of 24kV Composite Porcelain Insulator based on Power Spectrum Density Algorithm

Shao Zhenhua , Sun Zelong , Chen Tianxiang , Chen Li-an and Zheng Mei-rong
Department of Electrical Engineering and Automation Xiamen University of Technology, Xiamen City, Fujian Province, 361024, China.

ABSTRACT

In order to insure the stability of power grid, 24kV composite porcelain insulator PD monitoring system is studied in this paper. With the help of pulse current method detection method, the PD propagation characteristics can be precisely recognized by the power spectrum density (PSD). In order to have a good comparison, the PD experiments on 24kV composite porcelain insulator are in the implementation process under drying conditions. And the comprehensive fault decision based on PSD algorithm is studied in this paper. With the different layer PD faults, the causes and faults can be easily located by PSD algorithm. And the PSD algorithm is introduced in this paper. At last the simulation results show that the proposed method can improve the accuracy and the real-time performance of fault diagnosis in 24kV composite porcelain insulators.

Keywords:

Partial discharge, power spectrum density (PSD), fault decision and location, comprehensive fault decision, 24kV , pulse current method (PCM).