DocumentCode :
146094
Title :
A novel disturbance identification method based on empirical mode decomposition for HVDC transmission line protection
Author :
Fei Kong ; Baohui Zhang
Author_Institution :
Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an, China
fYear :
2014
fDate :
March 31 2014-April 3 2014
Firstpage :
1
Lastpage :
6
Abstract :
A novel disturbance identification method for HVDC transmission line main protection is proposed in this paper in order to prevent the mal-operation of protection caused by disturbance. The identification principle is based on the different variation trends of voltage in the cases of disturbance and fault, and this characteristic difference of voltage will be amplified in the IMF with the lowest frequency band by decomposing the voltage fault component using EMD. Thus, integration value of the selected IMF is employed as the criterion for distinguishing disturbance from fault. A ±500kV HVDC system simulation model, including detailed lightning stroke simulation model, is built in PSCAD/EMTDC. Simulation results show that the proposed disturbance identification method can distinguish disturbances from faults correctly with ultra-high-speed, providing a strong guarantee for main protection to prevent the mal-operation in the case of disturbance.
Keywords :
HVDC power transmission; power system identification; power system simulation; power transmission protection; EMD; HVDC system simulation model; HVDC transmission line protection; PSCAD-EMTDC; disturbance identification method; empirical mode decomposition; protection mal-operation; voltage fault component; HVDC system; disturbance identification; empirical mode decomposition; line protection;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Developments in Power System Protection (DPSP 2014), 12th IET International Conference on
Conference_Location :
Copenhagen
Print_ISBN :
978-1-84919-834-9
Type :
conf
DOI :
10.1049/cp.2014.0104
Filename :
6822912
Link To Document :
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