Study on the traveling wave differential protection and the improvement scheme for VSC-HVDC transmission lines

2016 ◽  
Author(s):  
Lei Wang ◽  
Qing Chen ◽  
Chuanxin Xi
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Differential Protection ◽  
Hvdc Transmission ◽  
Hvdc Transmission Lines ◽  
Improvement Scheme

scholarly journals A New Principle of Traveling Wave Differential Protection for HVDC Transmission Lines

2019 ◽  
Vol 158 ◽  
pp. 2884-2889 ◽  
Author(s):  
Yanxia Zhang ◽  
Wei Xu ◽  
Shuai Zhang ◽  
Huilan Jiang ◽  
Fang Zhang
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Differential Protection ◽  
Hvdc Transmission ◽  
Hvdc Transmission Lines

A Fault Location Method for HVDC Transmission Lines

2014 ◽  
Vol 556-562 ◽  
pp. 2723-2727 ◽  
Author(s):  
Lu Hua Xing ◽  
Qing Chen ◽  
Bing Lei Xue
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Fault Location ◽  
Propagation Characteristic ◽  
Location Method ◽  
Hvdc Transmission ◽  
High Voltage Direct Current ◽  
Current Transmission ◽  
Hvdc Transmission Lines ◽  
Transition Resistance

A fault location method for HVDC (High Voltage Direct Current) transmission lines is proposed in this paper, using voltages and currents measured at two terminals of dc lines in time domain. Fault traveling waves propagate from the fault point to both terminals along the faulted line. The position that the traveling wave head arrives at some moment after the fault can be used to calculate the fault location. To determine the arrival positions of traveling wave head at each time indirectly, propagation characteristic curves of traveling wave heads at local and the remote terminals are calculated with distribution currents using the stationary wavelet transform. The accuracy of fault location will not be affected by transition resistance and fault position. Simulation results show that the presented fault location method can achieve quick and accurate fault location on the whole line under probable operation modes of a bipolar HVDC transmission system.

Traveling Wave Current Polarity Comparison Protection Using Wavelet Modulus Maxima for HVDC Transmission Lines

2011 ◽  
Vol 383-390 ◽  
pp. 5327-5333
Author(s):  
Jian Dong Duan ◽  
Wen Lu ◽  
Lin An
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Electromagnetic Coupling ◽  
Hvdc Transmission ◽  
Protection Scheme ◽  
High Impedance ◽  
Hvdc Transmission Lines ◽  
High Impedance Faults ◽  
Current Polarity ◽  
Modulus Maxima

ABB and SIEMENS schemes based on the voltage change rate are the existing main protection for HVDC transmission lines. But the analysis and simulation tests show that these protection schemes may be unreliable as high impedance faults or as disturbances of above 2% noisy. The paper presents a new protection scheme of traveling wave current polarity comparison for a bipolar HVDC transmission line. The traveling wave current polarity is represented by the wavelet modulus maxima (WMM) of the fault current traveling wave. The traveling wave current polarity comparison protection scheme is evaluated by PSCAD. The extensive simulation studies show that the proposed scheme is reliable to distinguish internal faults from external faults of HVDC transmission lines. And the protection scheme is immune to high impedance faults and able to accurately detect the fault line under the electromagnetic coupling circumstance.

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