Fault Analysis and Traveling-Wave-Based Protection Scheme for Double-Circuit LCC-HVDC Transmission Lines With Shared Towers

2018 ◽  
Vol 33 (3) ◽  
pp. 1479-1488 ◽  
Author(s):  
Yanjun Ma ◽  
Haifeng Li ◽  
Gang Wang ◽  
Jiyang Wu
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Fault Analysis ◽  
Hvdc Transmission ◽  
Protection Scheme ◽  
Hvdc Transmission Lines

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.

An Improved Traveling-Wave Protection Scheme for LCC-HVDC Transmission Lines

2017 ◽  
Vol 32 (1) ◽  
pp. 106-116 ◽  
Author(s):  
Jiyang Wu ◽  
Haifeng Li ◽  
Gang Wang ◽  
Yuansheng Liang
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Hvdc Transmission ◽  
Protection Scheme ◽  
Hvdc Transmission Lines

scholarly journals Single Pole-to-Ground Fault Analysis of MMC-HVDC Transmission Lines Based on Capacitive Fuzzy Identification Algorithm

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 319
Author(s):  
Hongchun Shu ◽  
Na An ◽  
Bo Yang ◽  
Yue Dai ◽  
Yu Guo
Keyword(s):  
Transmission Lines ◽  
Fault Analysis ◽  
Identification Algorithm ◽  
Discharge Process ◽  
Multilevel Converter ◽  
Fuzzy Identification ◽  
Hvdc Transmission ◽  
High Voltage Direct Current ◽  
Ground Fault ◽  
Hvdc Transmission Lines

The probability of a single pole-to-ground fault in high voltage direct current (HVDC) transmission lines is relatively high. For the modular multilevel converter HVDC (MMC-HVDC) systems, when a single pole-to-ground fault occurs, the fault current is small, and it is difficult to identify the fault quickly. Through a detailed analysis of the characteristics of the single pole-to-ground fault of the MMC-HVDC transmission line, it is found that the single pole-to-ground fault has obvious capacitance-related characteristics, and the transient process after the single pole-to-ground fault is the discharge process of the distributed capacitance of the line. However, other faults do not have such obvious capacitance-related characteristics. Based on such feature, this paper proposes a novel capacitive fuzzy identification method to identify the single pole-to-ground fault. This algorithm can effectively identify both the fault of single pole-to-ground and the fault pole, which can contribute to the large database of the future smart grid.

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.

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