Title :
A novel transient based protection for ±800 kV UHVDC transmission lines
Author :
Gang, Wang ; Li Haifeng ; Jie, Zhao ; Li Zhikeng
Author_Institution :
Coll. of Electr. Power, South China Univ. of Technol., Guangzhou, China
Abstract :
A novel transient based protection for ±800 kV UHVDC transmission lines is proposed in the paper. A ±800 kV UHVDC bipolar model with DC control system is built with PSCAD/EMTDC software. Wavelet-multiresolution signal decomposition technique is applied to analyze the transient voltages. Based on spectral energy distribution of transient voltages, the criteria are presented to distinguish the UHVDC line faults from other transient phenomena. Extensive simulations are used to test the criteria. The results show the proposed transient based protection is highspeed, reliable and suitable for UHVDC lines.
Keywords :
HVDC power transmission; power system CAD; power system control; power system simulation; power system transients; power transmission faults; power transmission protection; wavelet transforms; -800 to 800 kV; DC control system; PSCAD-EMTDC software; UHVDC transmission line fault; spectral energy distribution; transient protection; wavelet-multiresolution signal decomposition technique;
Conference_Titel :
AC and DC Power Transmission, 2006. ACDC 2006. The 8th IEE International Conference on
Conference_Location :
IET
Print_ISBN :
0-86341-613-6
