NDLI: Protective relay application for generators and transformer

Please wait, while we are loading the content...

Protective relay application for generators and transformer

Content Provider	IEEE Xplore Digital Library
Author	Dudor, J.S. Padden, L.K.
Copyright Year	1975
Description	Application of overcurrent protective devices for generators and transformers is considered to be a routine task. However, a review of the protective device selection, device settings, and protection requirements for generators and transformers, as well as their connected buses, has revealed that certain lessons can be learned in examining a few typical applications. The applications are presented in a series of case studies. The case studies are in the following categories of protection problems: (1) generator backup protection: (a) bus-connected generators with feeder circuits at generator voltage; (b) unit-connected generators with voltage restraint time-overcurrent relays (device 51V) for backup protection; (c) unit-connected generators with distance relays (device 21) for backup protection; and (2) transformer protection with high 3-phase fault currents and low-ratio current transformers: (a) original protection scheme; (b) upgraded protection scheme. Only phase-fault conditions are analysed in the following problems because the topic of ground fault protection would require an equal amount of time to discuss. Each case is presented with: (1) a brief synopsis of the problem encountered; (2) the evaluation of the problem, including the suggested solutions; and (3) the "lesson to be learned" and the trouble spots to avoid.
Starting Page	22
Ending Page	35
Page Count	14
File Size	5286834
File Format	PDF
ISSN	10772618
Volume Number	3
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protection Protective relaying Circuit breakers Standby generators Transformers Circuit faults Relays Voltage Fault currents Cogeneration
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Generator Backup Overcurrent Protection

Application of transformer ground differential protection relays

Relay performance considerations with low-ratio CTs and high-fault currents

Short-Circuit Calculations and Relay Coordination Applied to Cement Plants

The effect of DC offset on current-operated relays

Operation of ground sensor relays under conditions of partial CT saturation

Impact of CT Errors on Protective Relays—Case Studies and Analyses

Application of Protective Relays on a Large Industrial-Utility Tie with Industrial Cogeneration

Protective relaying an medium- and high-voltage system

Protective relay application for generators and transformer

Similar Documents

Generator Backup Overcurrent Protection

Application of transformer ground differential protection relays

Relay performance considerations with low-ratio CTs and high-fault currents

Short-Circuit Calculations and Relay Coordination Applied to Cement Plants

The effect of DC offset on current-operated relays

Operation of ground sensor relays under conditions of partial CT saturation

Impact of CT Errors on Protective Relays—Case Studies and Analyses

Application of Protective Relays on a Large Industrial-Utility Tie with Industrial Cogeneration

Protective relaying an medium- and high-voltage system

Protective relay application for generators and transformer