Ground Fault Directional Protection Method for HVDC Multiterminal Networks

2022 ◽  
pp. 1-1
Author(s):  
Ricardo Granizo ◽  
Jose Manuel Guerrero ◽  
Fernando Alvarez ◽  
Carlos Antonio Platero
Keyword(s):  
Ground Fault ◽  
Protection Method

scholarly journals A Novel Ground Fault Non-Directional Selective Protection Method for Ungrounded Distribution Networks

Energies ◽  
2015 ◽  
Vol 8 (2) ◽  
pp. 1291-1316 ◽  
Author(s):  
Ricardo Granizo ◽  
Francisco Blánquez ◽  
Emilio Rebollo ◽  
Carlos Platero
Keyword(s):  
Distribution Networks ◽  
Selective Protection ◽  
Ground Fault ◽  
Protection Method

scholarly journals Transition and verification of ground fault protection method in Hokuriku Shinkansen line

2016 ◽  
Vol 6 (1) ◽  
pp. 134-139
Author(s):  
Michiteru Koyanagi ◽  
Toshiaki Takino ◽  
Hitoshi Hayashiya ◽  
Shigeyasu Matsuoka ◽  
Akiko Kumada ◽  
...  
Keyword(s):  
Ground Fault ◽  
Fault Protection ◽  
Protection Method ◽  
Ground Fault Protection

scholarly journals New Differential Protection Method for Multiterminal HVDC Cable Networks

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3387 ◽  
Author(s):  
Ricardo Granizo Arrabé ◽  
Carlos A. Platero ◽  
Fernando Álvarez Gómez ◽  
Emilio Rebollo López
Keyword(s):  
Power Systems ◽  
Electrical Power ◽  
Differential Protection ◽  
Electrical Power Systems ◽  
High Voltage Direct Current ◽  
Cable Network ◽  
Cable Networks ◽  
Ground Fault ◽  
Protection Method ◽  
Stable Conditions

Ground faults in electrical power systems represent more than 90% of total faults. Their detection, location, and elimination are essential and must be carried out in a precise way to allow multiterminal high-voltage direct current (HVDC) cable networks to operate in stable conditions by removing only the faulty cable from service. This paper presents a new differential protection method based on the measurement of currents at both ends of the shields of power cables. This new method is cheaper and easier to set in operation compared to other protection methods that measure currents circulating in the active conductors. The values of such intensities and their polarities were evaluated to know which cable had a ground fault in a multiterminal HVDC cable network. The method was successfully validated by computer simulations, and experimental results were successfully obtained.

CAD Of Anticorrosive Protection Of Steel Structures

2019 ◽  
pp. 18-23
Keyword(s):  
Protective Coating ◽  
Computer Aided Design ◽  
Steel Structures ◽  
Cost Effective ◽  
Operating Conditions ◽  
Computational Tool ◽  
Protection Method ◽  
Cost Effective Method ◽  
The Cost ◽  
Aided Design

The choice of cost-effective method of anticorrosive protection of steel structures is an urgent and time consuming task, considering the significant number of protection ways, differing from each other in the complex of technological, physical, chemical and economic characteristics. To reduce the complexity of solving this problem, the author proposes a computational tool that can be considered as a subsystem of computer-aided design and used at the stage of variant and detailed design of steel structures. As a criterion of the effectiveness of the anti-corrosion protection method, the cost of the protective coating during the service life is accepted. The analysis of existing methods of steel protection against corrosion is performed, the possibility of their use for the protection of the most common steel structures is established, as well as the estimated period of effective operation of the coating. The developed computational tool makes it possible to choose the best method of protection of steel structures against corrosion, taking into account the operating conditions of the protected structure and the possibility of using a protective coating.

Reliability Improvement of Ground Fault Protection System Using an S-Type Horn Attachment Gap in AC Feeding System

2009 ◽  
Vol 129 (10) ◽  
pp. 949-956
Author(s):  
Kohji Ajiki ◽  
Hiroaki Morimoto ◽  
Fumiyuki Shimokawa ◽  
Shinya Sakai ◽  
Kazuomi Sasaki ◽  
...  
Keyword(s):  
Protection System ◽  
Feeding System ◽  
Reliability Improvement ◽  
Ground Fault ◽  
Fault Protection ◽  
Ground Fault Protection

Feature Extraction for the Ground Fault Factor of High Voltage System Interface

2018 ◽  
Vol 138 (3) ◽  
pp. 206-211
Author(s):  
Kazunori Nishimura ◽  
Yusaku Marui ◽  
Wataru Sunayama
Keyword(s):  
Feature Extraction ◽  
High Voltage ◽  
Ground Fault ◽  
High Voltage System
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