Research on the Fault Location Principle for the Earthing Electrode Line of the UHVDC Transmission System

Xu Peng, Yu Jiang

CSG Power Dispatching Control Center, Guangzhou, China.

DOI: 10.4236/epe.2013.54B227                

Abstract

The UHVDC transmission line transports large-capacity power, and its safety operation has very important rule on the safe operation of grid. Currently, in the DC transmission system, the earthing electrode line has the functions of ground potential fixing and bipolar imbalance current circulation during the operation of bipolar balance. Therefore the monitoring to the earthing electrode line operation is very essential. This article firstly introduced the current situation of the research on the earthing electrode line fault location method, then built the relevant PSCAD/EMTDC model for simulation verification of the current using Time Domain Reflectometry for the UHVDC earthing electrode line, and at last analyzed the reasons for the formation of the blind monitoring zones.

Keywords

Earthing Electrode Line; Pulse Reflection Method

Conflicts of Interest

The authors declare no conflicts of interest.

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