In order to improve the security and stability of power grids, fault-line current calculations depend on the actual testing parameters of the DC transmission line. This allows utilities to detect the fault point when a breakdown occurs. It is necessary to develop a uniform standard to provide technical guidance for the measurement of the line-frequency characteristic, the DC resistance, and the earth electrode parametric for these DC transmission lines.This guide provides testing methods for direct current (DC) transmission line impedance and gives reference-defined values for the test results. The methods include electrical parameters of the main current of the DC system circuit that is constituted by the DC line, earth electrode, the earth electrode leads, etc. This guide includes the measuring instruments, various tests for the whole measuring system, and specific implementation methods. It is applicable to DC transmission lines and earth electrode line parameters.
Sponsor: BOG/CAG - Corporate Advisory Group
Society: BOG - IEEE-SA Board of Governors
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