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In the voltage source converter based high voltage direct current (VSC-HVDC) transmission system, traveling wave heads of currents and voltages are affected by fault location and transition resistance, thus are difficult to be recognized. To solve this problem and improve the accuracy of traveling wave head identification, parameter identification method is adopted in the present paper. In the zero-mode...
A novel pilot protection principle for VSC-HVDC cable lines based on fault component current is presented in this paper. In the transient process of cable line, if a fault occurs over the cable line, the current measured at both convert stations would have the same changing direction and the sign of the fault component current at both convert stations are the same to each other; otherwise, if a fault...
With excellent priorities, Voltage Source Converter based HVDC (VSC-HVDC) will be the promising offset of HVDC transmission technology. This paper presents a protection and fault location method for VSC-HVDC transmission lines using one terminal current data. The proposed method is based on the natural frequency from the reflection process of traveling wave on a distributed parameters transmission...
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