IEEE C37.101-2006 REDLINE
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
IEEE Guide for Generator Ground Protection
12-04-2022
English
15-11-2007
Important note : Users cannot be edited or removed once added to your Multi user PDF.
1 Overview
1.1 Scope
1.2 Purpose
1.3 Description of the guide
2 Normative references
3 Definitions, acronyms, and abbreviations
3.1 Definitions
3.2 Acronyms and abbreviations
4 Summary of protection schemes
5 Generator connections
5.1 Example use of Table 1
6 Generator grounding methods
6.1 Method I - Effective high-resistance ground with a
distribution transformer
6.2 Method II - High-resistance ground with a neutral ground
resistor
6.3 Method III - Low-resistance ground with a neutral ground
resistor
6.4 Method IV - Low-reactance ground with a neutral ground
reactor
6.5 Method V - Resonant ground with a ground fault neutralizer
6.6 Method VI - High-resistance ground with a delta-grounded-wye
transformer
6.7 Method VII - Medium-resistance ground with a
delta-grounded-wye transformer
6.8 Method VIII - Ungrounded
6.9 Method IX - Hybrid ground (switching low resistance to
high resistance)
7 Protective schemes
7.1 Scheme 1 - Ground overvoltage (complete shutdown)
7.2 Scheme 2 - Ground overvoltage (permissive shutdown)
7.3 Scheme 3 - Ground overvoltage exceed rated relay voltage
(alarm and time-delay shutdown)
7.4 Scheme 4 - Ground overvoltage exceed rated relay voltage
(alarm)
7.5 Scheme 5S - Start-up ground overvoltage (complete shutdown)
7.6 Scheme 6 - Ground fault neutralizer (alarm and time-delay
shutdown)
7.7 Scheme 7 - Grounded wye-broken-delta VTs with ground
overvoltage (complete shutdown)
7.8 Scheme 8S - Start-up grounded wye-broken-delta VTs with
ground overvoltage (complete shutdown)
7.9 Scheme 9 - Secondary-connected CT, time-delay ground
overcurrent (complete shutdown)
7.10 Scheme 10 - Primary-connected CT, time-delay ground
overcurrent (complete shutdown)
7.11 Scheme 11 - Instantaneous ground overcurrent (alarm
and/or complete shutdown)
7.12 Scheme 12 - Generator leads ground overcurrent (complete
shutdown)
7.13 Scheme 13 - Three-wire generator leads with window CT,
instantaneous ground overcurrent (complete shutdown)
7.14 Scheme 14 - Four-wire generator leads with window CT,
instantaneous ground overcurrent (complete shutdown)
7.15 Scheme 15 - Generator percentage differential (complete
shutdown)
7.16 Scheme 16 - Current-polarized directional overcurrent relay
7.17 Scheme 17 - Generator percentage differential relay on
delta-connected generator (complete shutdown)
7.18 Scheme 18 - 100% stator winding ground protection schemes
7.19 Scheme 19 - Alternate stator winding protection with
high-impedance relays
7.20 Scheme 20 - Generator neutral overcurrent protection for
an accidental solid ground fault
7.21 Scheme 21 - Directional ground fault protection for
high-resistance ground bus connected generators (multi-ground)
7.22 Scheme 22 - Hybrid ground protection for high-resistance
grounded bused generator and ungrounded distribution system
8 Miscellaneous considerations
9 Protective device function numbers
Annex A (informative) Stator ground protection for a
high-resistance grounded generator
Annex B (informative) Ground protection example to determine
the percent coverage of a high-impedance differential relay
Annex C (informative) Glossary
Annex D (informative) Bibliography
The guide is intended to assist protection engineers in applying relays and relaying schemes for protectionagainst stator ground faults on various generator grounding schemes.
| Committee |
Power System Relaying and Control
|
| DevelopmentNote |
Supersedes IEEE DRAFT C37.101. (12/2007)
|
| DocumentType |
Standard
|
| ISBN |
978-0-7381-5248-6
|
| Pages |
91
|
| PublisherName |
Institute of Electrical & Electronics Engineers
|
| Status |
Withdrawn
|
| Supersedes |
| IEEE DRAFT C37.95 : D6 99 | DRAFT GUIDE FOR PROTECTIVE RELAYING OF UTILITY CONSUMER INTERCONNECTIONS |
| IEEE 1665 : 2009 | GUIDE FOR THE REWIND OF SYNCHRONOUS GENERATORS, 50 HZ AND 60 HZ, RATED 1 MVA AND ABOVE |
| IEEE DRAFT C37.96 : D5 99 | DRAFT GUIDE FOR AC MOTOR PROTECTION |
| IEEE DRAFT 1147 : D8 2005 | GUIDE FOR THE REHABILITATION OF HYDROELECTRIC POWER PLANTS |
| IEEE C37.96-2012 | IEEE Guide for AC Motor Protection |
| IEEE C57.143-2012 | IEEE Guide for Application for Monitoring Equipment to Liquid-Immersed Transformers and Components |
| IEEE DRAFT C62.92.2 : 1999 | DRAFT GUIDE FOR THE APPLICATION OF NEUTRAL GROUNDING IN ELECTRICAL UTILITY SYSTEMS, PART 2 - GROUNDING OF SYNCHRONOUS GENERATOR SYSTEMS |
| I.S. EN ISO 14224:2016 | PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT (ISO 14224:2016) |
| IEEE DRAFT C37.102 : D8 2006 | AC GENERATOR PROTECTION |
| IEEE C37.102-2006 REDLINE | IEEE Guide for AC Generator Protection |
| IEEE 242-2001 | IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book) |
| ISO 14224:2016 | Petroleum, petrochemical and natural gas industries Collection and exchange of reliability and maintenance data for equipment |
| IEEE DRAFT 67 : D5 2005 | GUIDE FOR THE OPERATION AND MAINTENANCE OF TURBINE GENERATORS |
| IEEE C37.10-2011 REDLINE | IEEE Guide for Investigation, Analysis, and Reporting of Power Circuit Breaker Failures |
| IEEE 1129-2014 | IEEE Guide for Online Monitoring of Large Synchronous Generators (10 MVA and Above) |
| IEEE C37.12-2008 REDLINE | IEEE Guide for Specifications of High-Voltage Circuit Breakers (over 1000 Volts) |
| IEEE C62.92.2-1989 | IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part II - Grounding of Synchronous Generator Systems |
| IEEE DRAFT 1010 : D10 2005 | GUIDE FOR CONTROL OF HYDROELECTRIC POWER PLANTS |
| IEEE 1147-2005 | IEEE Guide for the Rehabilitation of Hydroelectric Power Plants |
| IEEE C37.246-2017 | IEEE Guide for Protection Systems of Transmission-to-Generation Interconnections |
| IEEE C37.11-2014 | IEEE Standard Requirements for Electrical Control for AC High-Voltage (>1000 V) Circuit Breakers |
| IEEE C62.92.3-2012 | IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part III -Generator Auxiliary Systems |
| BS EN ISO 14224:2016 | Petroleum, petrochemical and natural gas industries. Collection and exchange of reliability and maintenance data for equipment |
| IEEE 142-2007 | IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems |
| IEEE C62.92.2-1989 | IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part II - Grounding of Synchronous Generator Systems |
| IEEE C37.102-2006 REDLINE | IEEE Guide for AC Generator Protection |
| IEEE 32-1972 | IEEE Standard Requirements, Terminology, and Test Procedures for Neutral Grounding Devices |
| ANSI C50.10 : 1990 | ROTATING ELECTRICAL MACHINERY - SYNCHRONOUS MACHINES |
| IEEE C37.2-1996 | IEEE Standard Electrical Power System Device Function Numbers and Contact Designations |
| IEEE C37.102-1995 | IEEE Guide for AC Generator Protection |
| IEEE 142 : 2007 | GROUNDING OF INDUSTRIAL AND COMMERCIAL POWER SYSTEMS |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.