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Power-system protection

About: Power-system protection is a research topic. Over the lifetime, 6353 publications have been published within this topic receiving 117961 citations.


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Journal ArticleDOI
TL;DR: An experimental general-purpose process-control digital- computer system provides high-speed phase-and ground-distance fault protection of one 230 kV transmission line and an automatic oscillograph and diagnostic programs will allow a study of field performance.
Abstract: An experimental general-purpose process-control digital- computer system described in a companion paper (I-System Description) provides high-speed phase-and ground-distance fault protection of one 230 kV transmission line The stored program performs all of the relaying functions using the output of an analog-to- digital converter which reads the instantaneous value of the power- system currents and voltages Model line tests described here form the basis for preliminary performance evaluation An automatic oscillograph and diagnostic programs will allow a study of field performance

37 citations

Journal ArticleDOI
TL;DR: In this article, a method for the fault section estimation that considers the network topology under the influence of a circuit breaker tripped by the previous fault is proposed, which uses a three-dimensional (3-D) matrix to represent the protection systems.
Abstract: In this paper, a method for the fault section estimation that considers the network topology under the influence of a circuit breaker tripped by the previous fault is proposed. The proposed method uses a three-dimensional (3-D) matrix to represent the network topology and the protection systems. The proposed network matrix describes the sections that are protected by particular protective devices that can be changed according to the network topology. To deal with the uncertainties imposed on the protection systems, the fuzzy set theory was applied to the network matrix in order to examine the relationships between the operated protective devices and the fault section candidates. A systematic method for the fuzzy membership function for each relation is proposed. In the proposed method, the operated time sequences of the protective devices were employed because either the network matrix or the network topology varied whenever the operations of the circuit breakers occur. The efficiency and adaptivity of the proposed method were demonstrated in experimental studies on real power systems in the Korean electric power system, particularly in case of complicated multiple faults.

37 citations

Journal ArticleDOI
TL;DR: A power-system-relaying remote laboratory has been developed and a testing system of the relay operating characteristic, together with Matlab-based software, was developed, which will allow proficient analysis of sensitivities to relay settings and network configurations.
Abstract: The study of power system of relays requires some previous experience in this field. Laboratories focusing on teaching and researching the area of power-system protection have therefore been amply reported. However, these facilities require the actual presence of the students in the laboratories. To overcome this problem, a power-system-relaying remote laboratory has been developed. To implement this laboratory, a testing system of the relay operating characteristic, together with Matlab-based software, was developed. This remote laboratory enables real power-system-relaying experiments through the Internet. In fact, the user can remotely test a real relay disoperation. This system will therefore allow proficient analysis of sensitivities to relay settings and network configurations.

37 citations

Journal ArticleDOI
TL;DR: Extensive simulation studies with respect to typical double-circuit transmission-line systems show that the proposed technique is able to rapidly and correctly determine whether a fault is inside the protected line section without the need for communication links.
Abstract: This paper presents a new technique for noncommunication protection of double-circuit lines. In the technique, the sequence and superimposed signals are used to detect the remote circuit breaker (CB) operation, from which it is to be determined whether a fault inside the protected section can be derived. Extensive simulation studies with respect to typical double-circuit transmission-line systems show that the proposed technique is able to rapidly and correctly determine whether a fault is inside the protected line section without the need for communication links.

37 citations

Journal ArticleDOI
TL;DR: A comparative survey of research activities and emerging technologies of FCL and a comprehensive comparative study of inductive FCLs is presented based on their technical operational characteristics.

37 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202335
2022120
202182
2020115
2019132
2018151