Journal ArticleDOI
Adaptive transmission relaying concepts for improved performance
TLDR
It is suggested that maximum value from adaptive relaying will result from integration with existing or planned substation control and data acquisition functions and interfacing with the central energy management system (EMS).Abstract:
Concepts for adaptive protective relaying of transmission lines are presented. These include changes in online relay settings, relay characteristics, or logic in response to power system or environmental changes, or as a result of operating experience. Such changes as line-out or generator-out contingencies, which affect fault current distributions and degrade the system's security level, initiate adaptive protection system responses. Adaptive relaying is shown to be capable of improving relaying reliability and power system security and of achieving better utilization of transmission facilities. Most of the concepts require a hierarchical computer system, involving front-line parallel processors, a substation host, and remote central processors, all linked by channels that transmit data or relaying changes prior to or after a disturbance. It is suggested that maximum value from adaptive relaying will result from integration with existing or planned substation control and data acquisition functions and interfacing with the central energy management system (EMS). Emphasis is placed on use of interim hardware approaches to allow evolutionary development. >read more
Citations
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Book
Synchronized Phasor Measurements and Their Applications
Arun G. Phadke,James S. Thorp +1 more
TL;DR: Phasor Measurement Techniques and Applications: Estimation of Nominal Frequency Inputs and Phasor Estimation at Off-Nominal Frequency inputs.
Journal ArticleDOI
Synchronized Phasor Measurement Applications in Power Systems
TL;DR: A brief introduction to the PMU and wide-area measurement system (WAMS) technology is provided and the uses of these measurements for improved monitoring, protection, and control of power networks are discussed.
Journal ArticleDOI
A Simple Adaptive Overcurrent Protection of Distribution Systems With Distributed Generation
TL;DR: The use of adaptive protection, using local information, is proposed to overcome the challenges of the overcurrent protection in distribution systems with distributed generation.
Journal ArticleDOI
Adaptive relay setting for stand-alone digital distance protection
Y.Q. Xia,K.K. Li,A.K. David +2 more
TL;DR: An adaptive setting concept which can overcome reach accuracy problems of a distance relay on transmission lines is proposed and a microprocessor based distance relay with this new technique can respond to network conditions that change from time to time.
Journal ArticleDOI
Fault location on a transmission line using synchronized Voltage measurements
Sukumar Brahma,Adly A. Girgis +1 more
TL;DR: In this paper, a fault-location method for transmission lines using only synchronized voltage measurements at both ends of the line, eliminating the inherent error due to current transformers (CT) is presented.
References
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Journal ArticleDOI
An Accurate Fault Locator With Compensation For Apparent Reactance In The Fault Resistance Resulting From Remore-End Infeed
TL;DR: In this paper, a microprocessor based fault locator is described, which uses novel compensation techniques to improve accuracy and display the distance to the fault in percent of transmission line length, for facilitating repair and restoration following a permanent fault.
Journal ArticleDOI
An Accurate Fault Locator With Compensation For Apparent Reactance In The Fault Resistance Resulting From Remore-End Infeed
Eriksson,Saha,Rockefeller +2 more
Journal ArticleDOI
Adaptive transmission system relaying
TL;DR: The use of digital techniques to adapt transmission system protection and control to real-time power system changes is investigated and adaptive strategies that minimize the compromises required and thereby optimize system performance are presented.
Journal ArticleDOI
Some applications of phasor measurements to adaptive protection
TL;DR: In this paper, the application of microprocessor-based phasor measurements to novel adaptive protection schemes is presented, in which relay characteristics are modified in response to external signals and conditions in the system.
Journal ArticleDOI
Design Criteria for an Integrated Microprocessor-Based Substation Protection and Control System
J. S. Deliyannides,E. A. Udren +1 more
TL;DR: The paper summarizes the architecture, hardware and software design, functional capabilities, and economics of an integrated, microprocessor-based system for relaying and control of transmission substations.