Results 221 to 230 of about 298,418 (266)

A novel distance protection principle

2012 China International Conference on Electricity Distribution, 2012
The features of time difference-based traveling wave distance protection is presented first, then the basic principle of traveling wave distance protection is analyzed comprehensively. The core components, including traveling wave head extraction method and GPS timing part are analyzed in detail, using polarity information of traveling wave to ...
null Feng Peng, null Xiang-jun Zeng, null Hui Liu, null Liang Zou   +3 more
openaire   +1 more source

Error insensitive distance protection

European Transactions on Electrical Power, 1992
AbstractThis paper shows that no algorithm exists so far with an optimal behaviour to all non‐ideal input signals. Furthermore, it is not possible to combine an algorithm solving differential equations and a filtering algorithm to achieve an error insensitive behaviour. However, the combination of different algorithms results in an improved behaviour.
openaire   +1 more source

Distance protection of teed circuits

Proceedings of the Institution of Electrical Engineers, 1967
Multiended network interconnections, such as teed circuits, invariably pose special difficulties in their protection, and the methods of relaying that have been widely applied to plain feeders are often of limited applicability to circuits having more than two ends within the protected zone.
W.D. Humpage, D.W. Lewis
openaire   +1 more source

Distance Protection by Digital Technique

IFAC Proceedings Volumes, 1977
Abstract This paper presents a method of distance protection by digital technique. The characteristic of mho and reactance relay is realized by the performance equation. Some performance equations are derived by different methods. One is derived from a torque equation, and other is from the vector relation, Their superiority or inferiority is ...
I. Mitani, M. Yamaura, M. Okamura
openaire   +1 more source

Feeder protection: distance systems

1995
The principle of impedance measurement and the engineering of basic impedance measuring elements into schemes of distance protection whether they be switched, nonswitched, carrier-aided etc., has always formed a very important part of power system feeder protection.
openaire   +1 more source

Outsourcing shortest distance computing with privacy protection

The VLDB Journal, 2013
With the advent of cloud computing, it becomes desirable to outsource graphs into cloud servers to efficiently perform complex operations without compromising their sensitive information. In this paper, we take the shortest distance computation as a case to investigate the technique issues in outsourcing graph operations.
Jun Gao 0003, Jeffrey Xu Yu, Ruoming Jin, Jiashuai Zhou, Tengjiao Wang 0003, Dongqing Yang   +5 more
openaire   +1 more source

A novel instantaneous value based incremental quantities distance protection for AC transmission lines

International Journal of Electrical Power and Energy Systems, 2022
Minghao Wen
exaly  

Distance protection

2021
openaire   +1 more source

Improved distance protection for wind farm transmission line based on dynamic frequency estimation

International Journal of Electrical Power and Energy Systems, 2023
Jiawei He, Zhongrun Xie, Yunzhu Cao
exaly  

S-Transform based fault detection algorithm for enhancing distance protection performance

International Journal of Electrical Power and Energy Systems, 2021
Marjan Popov, Vladimir Terzija, Sadegh Azizi   +2 more
exaly