Single-pole Fault Locating for Ultra High Voltage DC Transmission
WANG Chunmei
LI Haoran
WANG Qian
LI Yimeng
Abstract：This paper uses the time-domain Hilbert transform method,and presents a method to locate fault location of single pole fault in a special high-voltage dc transmission. The method utilizes the transition resistance as pure resistance,and the current of the fault point voltage and the injection transition resistance should have the characteristics of the equal phase. To calculate the transition resistance on the instantaneous phase of voltage,current,this paper uses the sinusoidal representation method based on time domain Hilbert transform processing fault line of synchronous sampling data measured at each end. On PSCAD/EMTDC simula?tion platform UHVDC transmission simulation with two ends model is built,and Matlab software is used to write ranging algorithm, the result shows this method can realize accurate positioning within the scope of UHVDC transmission across the board,and the re?quired sampling data window is short,smooth ranging results,ranging accuracy is not affected by transition resistance and fault lo?cation.
Keywords：DC transmissionsingle-pole faultfault locationinstantaneous phasetime domain Hilbert transform
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1698-1702,1719 )