TY - GEN
T1 - Novel HVDC Transmission Line Protection Scheme Based on Current Differential
AU - Gamal Muhammad, Mahmoud
AU - Mourad Hafez, Dina
AU - Mahmoud Abd-Elaziz, Abd Elaziz
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - In the study of DC power lines protection performance; the shunt capacitance impact is not Significant as the frequency is zero in steady state condition. However, during system transients, faults, DC voltage fluctuation occurs and charging current flows onto the protected line from both terminals impacting the protection system, consequently, the influences of the charging and discharging current reasoned by the shunt capacitance must be considered. This paper suggests a new differential current protection scheme relying on compensating for capacitive current distributed along the length of the line solving the delay time problems for the currently used dc line current differential protection system. A monopolar 12-pulse HVDC test system is modeled using MATLAB, and different fault conditions are carried out to verify the success of the proposed algorithm. The simulation results demonstrate that the designed protection scheme accurately distinguishes between external and internal faults and well function with different fault location and impedance.
AB - In the study of DC power lines protection performance; the shunt capacitance impact is not Significant as the frequency is zero in steady state condition. However, during system transients, faults, DC voltage fluctuation occurs and charging current flows onto the protected line from both terminals impacting the protection system, consequently, the influences of the charging and discharging current reasoned by the shunt capacitance must be considered. This paper suggests a new differential current protection scheme relying on compensating for capacitive current distributed along the length of the line solving the delay time problems for the currently used dc line current differential protection system. A monopolar 12-pulse HVDC test system is modeled using MATLAB, and different fault conditions are carried out to verify the success of the proposed algorithm. The simulation results demonstrate that the designed protection scheme accurately distinguishes between external and internal faults and well function with different fault location and impedance.
KW - Distributed capacitive current
KW - HVDC
KW - Line Differential
UR - http://www.scopus.com/inward/record.url?scp=85062875328&partnerID=8YFLogxK
U2 - 10.1109/MEPCON.2018.8635132
DO - 10.1109/MEPCON.2018.8635132
M3 - Conference contribution
AN - SCOPUS:85062875328
T3 - 2018 20th International Middle East Power Systems Conference, MEPCON 2018 - Proceedings
SP - 361
EP - 366
BT - 2018 20th International Middle East Power Systems Conference, MEPCON 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 20th International Middle East Power Systems Conference, MEPCON 2018
Y2 - 18 December 2018 through 20 December 2018
ER -
