Generator Protection GENERATOR CONTROL AND PROTECTION
|
|
- Cordelia Johnson
- 5 years ago
- Views:
Transcription
1 Generator Protection
2 Generator Protection Introduction Device Numbers Symmetrical Components Fault Current Behavior Generator Grounding Stator Phase Fault (87G) Field Ground Fault (64F) Stator Ground Fault (87N, 51N, 59N, 27-3N)
3 Generator Protection Loss of Field (40Q, 40Z) Over/Under Frequency (81O/81U) Overexcitation and Overvoltage (24, 59) Out of Step (78) Negative Sequence (Current Unbalance) (46) Inadvertent Energization (27, 50, 60, 81, 62, 86) Loss of Voltage Transformer (60) System Backup (51V, 21) Conclusion
4 Generator Protection 49 G F 51N 87G 60 REG T U O V 50 IE 46 59N 27-3N 51- GN
5 Steam Generator Stator Windings
6 Hydraulic Generator Stator / Rotor
7 Hydraulic Generator Stator Core
8 Generator Protection
9 Split Phase Relaying CT
10 Cylindrical Rotor in Need of Repair
11 Generator Protection
12 Generator Protection
13 Symmetrical Components Positive Sequence A set of three phasors that have the same magnitude, are equally displaced from each other by 120º, and have the same phase sequence as the system under study (ex ABC) Negative Sequence A set of three phasors that have the same magnitude, are equally displaced from each other by 120º, and have the opposite phase sequence as the system under study (ex ACB) Zero Sequence A set of three phasors of equal magnitude that are all in phase or have zero displacement from each other
14 Symmetrical Components
15 Symmetrical Components
16 Symmetrical Components
17 Symmetrical Components
18 Symmetrical Components
19 Example Problem Symmetrical Components One conductor of a three phase line is open. The current flowing to the delta connected load thru line a is 10A. With the current in line a as reference and assuming that line c is open, find the symmetrical components of the line currents.
20 Symmetrical Components Example Problem I a = 10/0 A, I b = 10/180 A, I c = 0 A I a0 = (1/3)(I a + I b + I c ) I a0 = (1/3)(10/0 + 10/ ) = 0 I a1 = (1/3)(I a + αi b + α 2 I c ) I a1 = (1/3)(10/0 + 10/ ) I a1 = 5.78 /-30 I a2 = (1/3)(I a + α 2 I b + αi c ) I a2 = (1/3)(10/0 + 10/ ) I a2 = 5.78 /30
21 Symmetrical Components Example Problem I b0 = 0 I b1 = 5.78 /-150 I b2 = 5.78 /150 I c0 = 0 I c1 = 5.78 /90 I c2 = 5.78 /-90
22 Symmetrical Components Example Problem I a0 = 0, I b0 = 0, I c0 = 0 I a1 = 5.78 /-30, I b1 = 5.78 /-150, I c1 = 5.78 /90 I a2 = 5.78 /30, I b2 = 5.78 /150, I c2 = 5.78 /-90
23 Example Problem Symmetrical Components Note: the components I c1 and I c2 have definite values although line c is open and can carry no net current. As expected, the sum of these currents is zero. The sum of the currents in line a is 10/0 The sum of the currents in line b is 10/180
24 Symmetrical Components Single Phase Line to Ground Fault
25 Symmetrical Components Generator Sequence Networks
26 Symmetrical Components
27 Symmetrical Components
28 Symmetrical Components
29 Fault Current Behavior of a Synchronous Generator
30 Fault Current Behavior of a Synchronous Generator
31 Fault Current Behavior of a Synchronous Generator
32 Fault Current Behavior of a Synchronous Generator Max DC Offset No DC Offset
33 Fault Current Behavior of a Synchronous Generator
34 Fault Current Behavior of a Synchronous Generator
35 Generator Grounding
36 Generator Grounding Low Impedance Grounding Single phase to ground fault current between 200A and 150% High Impedance Grounding Single phase to ground fault current between 5 and 20A
37 Generator Stator Phase Fault Protection (87G)
38 Generator Stator Phase Fault Protection (87G) 87G used to protect for: 3 phase line to line 1 phase line to line multi-phase line to ground May not be able to detect a 1 phase to ground fault on high impedance grounded generators Restraint or Percentage Differential Trip Characteristic Used to improve sensitivity for detecting small levels of fault current Also maintains security against inadvertent tripping due to thru faults
39 Generator Stator Phase Fault Protection (87G)
40 Generator Stator Phase Fault Protection (87G)
41 Generator Stator Phase Fault Protection (87G) Split-phase protection scheme Able to detect turn-turn faults Windings for each phase split into equal groups Individual winding currents are vector summed Any difference in winding current results in a output from CT Overcurrent relay (50/51) can be used to monitor difference current Setting must be above any normal unbalances that may exist
42 Generator Stator Phase Fault Protection (87G)
43 Generator Field Ground Fault Protection (64F)
44 Generator Stator Ground Fault Protection (87N, 51N, 59N & 27-3N) For Low Impedance Grounded Generators
45 Generator Stator Ground Fault Protection (87N, 51N, 59N & 27-3N) For Low Impedance Grounded Generators
46 Generator Stator Ground Fault Protection (87N, 51N, 59N & 27-3N) External Generator Phase-Ground Fault
47 Generator Stator Ground Fault Protection (87N, 51N, 59N & 27-3N) External Generator Phase-Ground Fault
48 Generator Stator Ground Fault Protection (87N, 51N, 59N & 27-3N) Internal Generator Phase-Ground Fault
49 Generator Stator Ground Fault Protection (87N, 51N, 59N & 27-3N) Internal Generator Phase-Ground Fault
50 Generator Stator Ground Fault Protection (87N, 51N, 59N & 27-3N) High Impedance Grounded 50MVA, 13.2kV Generator Xc = 10,610Ω for 60Hz Rpri = 10,610/3 = 3537 Ω
51 Loss of Field Protection (40Q, 40Z)
52 Loss of Field Protection (40Q, 40Z)
53 Loss of Field Protection (40Q, 40Z)
54 Over/Under Frequency Protection (81O/U) Causes: Significant load addition Sudden reduction in mechanical input power Loss of generation Loss of load Underfrequency can cause: Higher generator load currents Overexcitation Turbine blade fatigue Overfrequency can cause: Overvoltage on hydro turbines
55 Overexcitation and Overvoltage Protection (24, 59) Modern Excitation Systems include over excitation limiting and protection, but it may take several seconds to limit Overexcitation occurs when the V/Hz ratio exceeds 105% at FL and 110% at no load V/Hz relays set at 110% with a 5 10 sec delay Generator overvoltage can occur without exceeding V/Hz relay setting due to large over speed on hydro generator Generator overvoltage relay, 59 may be used
56 Out of Step Protection (78) High peak currents and off-frequency operation can occur when a generator losses synchronism Causes winding stress, high rotor iron currents, pulsating torques and mechanical resonances Conventional relaying approach analyzing variations in apparent impedance as viewed at generator terminals Variation in impedance can be detected by impedance relaying and generator separated before the completion of one slip cycle
57 Out of Step Protection (78) E A E B A Z A Z T Z B B Generator Transformer System E A /E B >1 +X B E A /E B =1 E A /E B <1 Q Z B Z T -R Z A δ P +R A -X
58 Out of Step Protection (78) A X B System R Trans P M Gen X'd A Element Pickup B Element Pickup Mho Element Blinder Elements
59 Negative Sequence Protection (46) Protects generator from excessive heating in the rotor due to unbalanced stator currents Negative sequence component of stator current induces double frequency current in rotor, causing heating Rotor temperature rise proportion to I 22 t Negative sequence relays provide settings for this relationship in the form of a constant, k = I 22 t Minimum permissible continuous unbalance currents are specified (ANSI/IEEE C50.13)
60 Inadvertent Energization Protection (27, 50, 60, 81U, 62 and 86) Protects against closing of the generator breaker while machine is not spinning / on turning gear Caused by operator error, breaker flash-over, control circuit malfunction Two schemes illustrated: Frequency supervised overcurrent Voltage supervised overcurrent
61 Inadvertent Energization Protection Frequency Supervised Overcurrent +DC G 81U 50 (3-phase) U 0.5sec Pickup 0.1sec Dropout DC
62 Inadvertent Energization Protection Frequency Supervised Overcurrent Uses an underfrequency relay (81U) to enable a sensitive instantaneous overcurrent relay (50) Overcurrent relay picks up at 50% or less of expected inadvertent energizing current Frequency relay contacts must remain closed if sensing voltage goes to zero Voltage balance relay (60) protects against loss of sensing Time delay relay (62) protects against sudden application of nominal voltage during inadvertent energization, allowing overcurrent to trip lockout relay (86) Lockout relay must be manually reset
63 Inadvertent Energization Protection Voltage Supervised Overcurrent Same illustration as frequency supervised overcurrent except 81U replaced by 27 Undervoltage setpoint of 85% of the lowest expected emergency operating level
64 Loss of Voltage Transformer Protection (60) Common practice on large systems to use two or more VTs One used for relays and metering The other used for AVR VTs normally fused Most common cause of failure is fuse failure Loss of VT protection blocks voltage based protective functions (21, 32, 40 etc) Loss of VT protection measure voltage unbalance, typical setting is 15%
65 Loss of Voltage Transformer Protection (60) G vt 60 To Protective Relays To Excitation Controller
66 System Backup Protection (51V, 21) Common practice to provide protection for faults outside of the generator zone of protection Voltage supervised time-overcurrent (51V) or distance relaying (21) may be used Distance relay set to include generator step up transformer and reach beyond, into the system Time delays must be coordinated with those of the system protection to assure that system protection will operate before back up CTs on neutral side of generator will also provide backup protection for the generator
67 System Backup Protection (51V, 21) G 21 51V a.) Neutral Connected ct's
68 System Backup Protection (51V, 21)
69 System Backup Protection (51V, 21) For medium and small sized generators, voltage-restrained or voltage controlled time overcurrent relays (51V) are often applied Control or restraining function used to prevent or desensitize the overcurrent relay from tripping until the generator voltage is reduced by a fault
70 System Backup Protection (51V, 21) 100% Enable Percent Set Value for Pickup Pickup Inhibit/Enable 25% Inhibit Percent Nominal Volts 25% 100% Percent Nominal Volts 80% 100% a.) Voltage-Restrained Overcurrent b.) Voltage-Contolled Overcurrent
71 Conclusion Generators must be protected from electrical faults, mechanical problem and adverse system conditions Some faults require immediate attention (shutdown) while others just require alarming or transfer to redundant controllers Design of these systems requires extensive understanding of generator protection Further study IEEE C Guide for AC Generator Protective Relaying
O V E R V I E W O F T H E
A CABLE Technicians TESTING Approach to Generator STANDARDS: Protection O V E R V I E W O F T H E 1 Moderator n Ron Spataro AVO Training Institute Marketing Manager 2 Q&A n Send us your questions and comments
More informationSystem Protection and Control Subcommittee
Power Plant and Transmission System Protection Coordination Reverse Power (32), Negative Sequence Current (46), Inadvertent Energizing (50/27), Stator Ground Fault (59GN/27TH), Generator Differential (87G),
More informationPower Plant and Transmission System Protection Coordination
Technical Reference Document Power Plant and Transmission System Protection Coordination NERC System Protection and Control Subcommittee Revision 1 July 2010 Table of Contents 1. Introduction... 1 1.1.
More informationTransformer Protection
Transformer Protection Transformer Protection Outline Fuses Protection Example Overcurrent Protection Differential Relaying Current Matching Phase Shift Compensation Tap Changing Under Load Magnetizing
More informationPower Plant and Transmission System Protection Coordination
Agenda Item 5.h Attachment 1 A Technical Reference Document Power Plant and Transmission System Protection Coordination Draft 6.9 November 19, 2009 NERC System Protection and Control Subcommittee November
More informationPower Plant and Transmission System Protection Coordination Fundamentals
Power Plant and Transmission System Protection Coordination Fundamentals NERC Protection Coordination Webinar Series June 2, 2010 Jon Gardell Agenda 2 Objective Introduction to Protection Generator and
More informationCOPYRIGHTED MATERIAL. Index
Index Note: Bold italic type refers to entries in the Table of Contents, refers to a Standard Title and Reference number and # refers to a specific standard within the buff book 91, 40, 48* 100, 8, 22*,
More informationNERC Protection Coordination Webinar Series July 15, Jon Gardell
Power Plant and Transmission System Protection Coordination Reverse Power (32), Negative Sequence Current (46), Inadvertent Energizing (50/27), Stator Ground Fault (59GN/27TH), Generator Differential (87G),
More informationWaterpower '97. Upgrading Hydroelectric Generator Protection Using Digital Technology
Waterpower '97 August 5 8, 1997 Atlanta, GA Upgrading Hydroelectric Generator Protection Using Digital Technology Charles J. Beckwith Electric Company 6190-118th Avenue North Largo, FL 33773-3724 U.S.A.
More informationSequence Networks p. 26 Sequence Network Connections and Voltages p. 27 Network Connections for Fault and General Unbalances p. 28 Sequence Network
Preface p. iii Introduction and General Philosophies p. 1 Introduction p. 1 Classification of Relays p. 1 Analog/Digital/Numerical p. 2 Protective Relaying Systems and Their Design p. 2 Design Criteria
More informationSystem Protection and Control Subcommittee
Power Plant and Transmission System Protection Coordination Volts Per Hertz (24), Undervoltage (27), Overvoltage (59), and Under/Overfrequency (81) Protection System Protection and Control Subcommittee
More informationNERC Protection Coordination Webinar Series June 16, Phil Tatro Jon Gardell
Power Plant and Transmission System Protection Coordination Phase Distance (21) and Voltage-Controlled or Voltage-Restrained Overcurrent Protection (51V) NERC Protection Coordination Webinar Series June
More informationPJM Manual 07:: PJM Protection Standards Revision: 2 Effective Date: July 1, 2016
PJM Manual 07:: PJM Protection Standards Revision: 2 Effective Date: July 1, 2016 Prepared by System Planning Division Transmission Planning Department PJM 2016 Table of Contents Table of Contents Approval...6
More informationPower Plant and Transmission System Protection Coordination of-field (40) and Out-of. of-step Protection (78)
Power Plant and Transmission System Protection Coordination Loss-of of-field (40) and Out-of of-step Protection (78) System Protection and Control Subcommittee Protection Coordination Workshop Phoenix,
More informationNERC Protection Coordination Webinar Series June 23, Phil Tatro
Power Plant and Transmission System Protection Coordination Volts Per Hertz (24), Undervoltage (27), Overvoltage (59), and Under/Overfrequency (81) Protection NERC Protection Coordination Webinar Series
More informationAdvanced Applications of Multifunction Digital Generator Protection
Advanced Applications of Multifunction Digital Generator Protection Charles J. Mozina Beckwith Electric Company 6190-118th Avenue North Largo, FL 33773-3724 U.S.A. Abstract: The protection of generators
More informationProtecting Large Machines for Arcing Faults
Protecting Large Machines for Arcing Faults March 2, 2010 INTRODUCTION Arcing faults occur due to dirty insulators or broken strands in the stator windings. Such faults if undetected can lead to overheating
More informationGenerator Protection M 3425
PROTECTION Generator Protection M 3425 Integrated Protection System for Generators of All Sizes Unit shown with optional M 3925 Target Module and M 3931 HMI (Human Machine Interface) Module Provides all
More informationRelaying 101. by: Tom Ernst GE Grid Solutions
Relaying 101 by: Tom Ernst GE Grid Solutions Thomas.ernst@ge.com Relaying 101 The abridged edition Too Much to Cover Power system theory review Phasor domain representation of sinusoidal waveforms 1-phase
More information889 Advanced Generator Protection Technical Note
GE Grid Solutions 8 Series 889 Advanced Generator Protection Technical Note GE Publication Number: GET-20056 Copyright 2017 GE Multilin Inc. Overview The Multilin 889 is part of the 8 Series platform that
More informationPower systems Protection course
Al-Balqa Applied University Power systems Protection course Department of Electrical Energy Engineering 1 Part 5 Relays 2 3 Relay Is a device which receive a signal from the power system thought CT and
More informationSubstation applications
Substation applications To make it easy to choose the right for a protection application, the most typical applications are presented with the type of for them. Each sample application is presented by:
More informationCatastrophic Relay Misoperations and Successful Relay Operation
Catastrophic Relay Misoperations and Successful Relay Operation Steve Turner (Beckwith Electric Co., Inc.) Introduction This paper provides detailed technical analysis of several catastrophic relay misoperations
More informationNERC Protection Coordination Webinar Series June 30, Dr. Murty V.V.S. Yalla
Power Plant and Transmission System Protection ti Coordination Loss-of-Field (40) and Out-of of-step Protection (78) NERC Protection Coordination Webinar Series June 30, 2010 Dr. Murty V.V.S. Yalla Disclaimer
More informationSetting and Verification of Generation Protection to Meet NERC Reliability Standards
1 Setting and Verification of Generation Protection to Meet NERC Reliability Standards Xiangmin Gao, Tom Ernst Douglas Rust, GE Energy Connections Dandsco LLC. Abstract NERC has recently published several
More informationGENERATOR INTERCONNECTION APPLICATION Category 5 For All Projects with Aggregate Generator Output of More Than 2 MW
GENERATOR INTERCONNECTION APPLICATION Category 5 For All Projects with Aggregate Generator Output of More Than 2 MW ELECTRIC UTILITY CONTACT INFORMATION Consumers Energy Interconnection Coordinator 1945
More informationPD300. Transformer, generator and motor protection Data sheet
PD300 Transformer, generator and motor protection Data sheet DSE_PD300_eng_AO No part of this publication may be reproduced by whatever means without the prior written permission of Ingeteam T&D. One of
More informationPRC Generator Relay Loadability. Guidelines and Technical Basis Draft 5: (August 2, 2013) Page 1 of 76
PRC-025-1 Introduction The document, Power Plant and Transmission System Protection Coordination, published by the NERC System Protection and Control Subcommittee (SPCS) provides extensive general discussion
More informationProtection Issues Related to Pumped Storage Hydro (PSH) Units
WG J6-PSRC/IEEE/PES 1 Protection Issues Related to Pumped Storage Hydro (PSH) Units Members of the Working Group on Protective Relaying for Pumped Storage Hydro Units ; J. Uchiyama (Chairman), D. Finney
More informationNTG MULTIFUNCTON GENERATOR PROTECTION RELAY. NTG-Slide
NTG MULTIFUNCTON GENERATOR PROTECTION RELAY 1 NTG Digital protection relay that integrates a number of functions required r for the protection of generators. It is used in power stations from gas, steam,
More informationPRC Generator Relay Loadability. Guidelines and Technical Basis Draft 4: (June 10, 2013) Page 1 of 75
PRC-025-1 Introduction The document, Power Plant and Transmission System Protection Coordination, published by the NERC System Protection and Control Subcommittee (SPCS) provides extensive general discussion
More information1
Guidelines and Technical Basis Introduction The document, Power Plant and Transmission System Protection Coordination, published by the NERC System Protection and Control Subcommittee (SPCS) provides extensive
More informationGenerator Protection M 3420
PROTECTION Generator Protection M 3420 Integrated Protection System for Generators of All Sizes Unit shown with optional M 3920 Target Module and M 3931 HMI (Human-Machine Interface) Module Microprocessor-based
More informationTransmission Lines and Feeders Protection Pilot wire differential relays (Device 87L) Distance protection
Transmission Lines and Feeders Protection Pilot wire differential relays (Device 87L) Distance protection 133 1. Pilot wire differential relays (Device 87L) The pilot wire differential relay is a high-speed
More informationNERC Requirements for Setting Load-Dependent Power Plant Protection: PRC-025-1
NERC Requirements for Setting Load-Dependent Power Plant Protection: PRC-025-1 Charles J. Mozina, Consultant Beckwith Electric Co., Inc. www.beckwithelectric.com I. Introduction During the 2003 blackout,
More informationConsiderations for Power Plant and Transmission System Protection Coordination
Considerations for Power Plant and Transmission System Protection Coordination Technical Reference Document Revision 2 System Protection and Control Subcommittee July 2015 I Table of Contents Preface...
More informationTransformer Protection Principles
Transformer Protection Principles 1. Introduction Transformers are a critical and expensive component of the power system. Due to the long lead time for repair of and replacement of transformers, a major
More informationDetecting and Managing Geomagnetically Induced Currents With Relays
Detecting and Managing Geomagnetically Induced Currents With Relays Copyright SEL 2013 Transformer Relay Connections Voltage Current Control RTDs Transformer Protective Relay Measures differential current
More informationImpact Assessment Generator Form
Impact Assessment Generator Form This connection impact assessment form provides information for the Connection Assessment and Connection Cost Estimate. Date: (dd/mm/yyyy) Consultant/Developer Name: Project
More informationInstruction Book. M 3425A Generator Protection
Instruction Book M 3425A Generator Protection TRADEMARKS All brand or product names referenced in this document may be trademarks or registered trademarks of their respective holders. The content of this
More informationThe InterNational Electrical Testing Association Journal. BY STEVE TURNER, Beckwith Electric Company, Inc.
The InterNational Electrical Testing Association Journal FEATURE PROTECTION GUIDE 64S Theory, Application, and Commissioning of Generator 100 Percent Stator Ground Fault Protection Using Low Frequency
More informationHands On Relay School Open Lecture Transformer Differential Protection Scott Cooper
Hands On Relay School Open Lecture Transformer Differential Protection Scott Cooper Transformer Differential Protection ntroduction: Transformer differential protection schemes are ubiquitous to almost
More informationProtective Relaying for DER
Protective Relaying for DER Rogerio Scharlach Schweitzer Engineering Laboratories, Inc. Basking Ridge, NJ Overview IEEE 1547 general requirements to be met at point of common coupling (PCC) Distributed
More informationOPERATING, METERING, AND EQUIPMENT PROTECTION REQUIREMENTS FOR PARALLEL OPERATION OF LARGE-SIZE GENERATING FACILITIES GREATER THAN 2,000 KILOWATTS
OPERATING, METERING, AND EQUIPMENT PROTECTION REQUIREMENTS FOR PARALLEL OPERATION OF LARGE-SIZE GENERATING FACILITIES GREATER THAN 2,000 KILOWATTS CONNECTED TO THE DISTRIBUTION SYSTEM ORANGE AND ROCKLAND
More informationGenerator Advanced Concepts
Generator Advanced Concepts Common Topics, The Practical Side Machine Output Voltage Equation Pitch Harmonics Circulating Currents when Paralleling Reactances and Time Constants Three Generator Curves
More informationHands On Relay School Open Lecture Transformer Differential Protection Scott Cooper
Hands On Relay School Open Lecture Transformer Differential Protection Scott Cooper Transformer Differential Protection ntroduction: Transformer differential protection schemes are ubiquitous to almost
More informationType KLF Generator Field Protection-Loss of Field Relay
Supersedes DB 41-745B pages 1-4, dated June, 1989 Mailed to: E, D, C/41-700A ABB Power T&D Company Inc. Relay Division Coral Springs, FL Allentown, PA For Use With Delta Connected Potential Transformers
More informationU I. Time Overcurrent Relays. Basic equation. More or less approximates thermal fuse. » Allow coordination with fuses 9/24/2018 ECE525.
Time Overcurrent Relays More or less approximates thermal fuse» Allow coordination with fuses Direction of Current nduced Torque Restraining Spring Reset Position Time Dial Setting Disk Basic equation
More informationNumbering System for Protective Devices, Control and Indication Devices for Power Systems
Appendix C Numbering System for Protective Devices, Control and Indication Devices for Power Systems C.1 APPLICATION OF PROTECTIVE RELAYS, CONTROL AND ALARM DEVICES FOR POWER SYSTEM CIRCUITS The requirements
More informationNO WARRANTIES OF ANY KIND ARE IMPLIED ON THE INFORMATION CONTAINED IN THIS DOCUMENT.
MODBUS/BECO2200-M3425A Communication Data Base for M-3425A Integrated Protection System Device I.D. = 150 Specifications presented herein are thought to be accurate at the time of publication but are subject
More information489 Generator Management Relay Instruction Manual
Digital Energy Multilin Firmware Revision: 4.0X Manual Part Number: 1601-0150-AF Manual Order Code: GEK-106494P Copyright 2011 GE Multilin 489 Generator Management Relay Instruction Manual GE Multilin
More informationInstruction Book. M-3425A Generator Protection
Instruction Book M-3425A Generator Protection PROTECTION Generator Protection M 3425A Integrated Protection System for Generators of All Sizes Unit shown with optional M 3925A Target Module and M 3931
More informationFuseless Capacitor Bank Protection
Fuseless Bank Protection Minnesota Power Systems Conference St. Paul, MN. November 2, 1999 by: Tom Ernst, Minnesota Power Other Papers of Interest Presented at Western Protective Relay Conference, Oct.
More informationOvercurrent Elements
Exercise Objectives Hands-On Relay Testing Session Overcurrent Elements After completing this exercise, you should be able to do the following: Identify overcurrent element settings. Determine effective
More informationOptimizing HV Capacitor Bank Design, Protection, and Testing Benton Vandiver III ABB Inc.
Optimizing HV Capacitor Bank Design, Protection, and Testing Benton Vandiver III ABB Inc. Abstract - This paper will discuss in detail a capacitor bank protection and control scheme for >100kV systems
More informationPerformance of Generator Protection Relays During Off-Nominal Frequency Operation
Performance of Generator Protection Relays During Off-Nominal Frequency Operation Dennis Tierney Calpine Corporation Bogdan Kasztenny, Dale Finney, Derrick Haas, and Bin Le Schweitzer Engineering Laboratories,
More informationTransformer protection IED RET 670
Gunnar Stranne Transformer protection IED RET 670 Santiago Septiembre 5, 2006 1 Transformer protection IED RET670 2 Introduction features and applications Differential protection functions Restricted Earth
More informationDistance Relay Response to Transformer Energization: Problems and Solutions
1 Distance Relay Response to Transformer Energization: Problems and Solutions Joe Mooney, P.E. and Satish Samineni, Schweitzer Engineering Laboratories Abstract Modern distance relays use various filtering
More informationProtection of a 138/34.5 kv transformer using SEL relay
Scholars' Mine Masters Theses Student Theses and Dissertations Fall 2016 Protection of a 138/34.5 kv transformer using SEL 387-6 relay Aamani Lakkaraju Follow this and additional works at: http://scholarsmine.mst.edu/masters_theses
More informationPower System Protection. Dr. Lionel R. Orama Exclusa, PE Week 3
Power System Protection Dr. Lionel R. Orama Exclusa, PE Week 3 Operating Principles: Electromagnetic Attraction Relays Readings-Mason Chapters & 3 Operating quantities Electromagnetic attraction Response
More informationPower Plant and Transmission System Protection Coordination
Power Plant and Transmission System Protection Coordination A report to the Rotating Machinery Protection Subcommittee of the Power System Relay Committee of the IEEE Power Engineering Society Prepared
More informationGenerator Protection M 3425A
PROTECTION Generator Protection M 3425A Integrated Protection System for Generators of All Sizes Unit shown with optional M 3925A Target Module and M 3931 HMI (Human Machine Interface) Module Exceeds IEEE
More informationP. O. BOX 269 HIGHLAND, ILLINOIS, U.S.A PHONE FAX
SSE-N NEGATIVE FIELD FORCING SHUNT STATIC EXCITER/REGULATOR SYSTEM Control Chassis 6 SCR Power Chassis APPLICATION The SSE-N Negative Field Forcing Exciter/Regulator is used for both new and old installations
More informationGENERATOR INTERCONNECTION APPLICATION Category 3 For All Projects with Aggregate Generator Output of More Than 150 kw but Less Than or Equal to 550 kw
GENERATOR INTERCONNECTION APPLICATION Category 3 For All Projects with Aggregate Generator Output of More Than 150 kw but Less Than or Equal to 550 kw ELECTRIC UTILITY CONTACT INFORMATION Consumers Energy
More informationEarth Fault Protection
Earth Fault Protection Course No: E03-038 Credit: 3 PDH Velimir Lackovic, Char. Eng. Continuing Education and Development, Inc. 9 Greyridge Farm Court Stony Point, NY 10980 P: (877) 322-5800 F: (877) 322-4774
More informationNORTH CAROLINA INTERCONNECTION REQUEST. Utility: Designated Contact Person: Address: Telephone Number: Address:
NORTH CAROLINA INTERCONNECTION REQUEST Utility: Designated Contact Person: Address: Telephone Number: Fax: E-Mail Address: An is considered complete when it provides all applicable and correct information
More informationWD series DIN Rail or Screw Mounted Protective Relays
WD series DIN Rail or Screw Mounted Protective Relays WD25 Paralleling (Synch Check) Relays WD2759 Over/undervoltage Relays WD32 Reverse Power Relays WD47 Phase Sequence Relays WD5051 Single- or Three-Phase
More informationOPERATING, METERING AND EQUIPMENT PROTECTION REQUIREMENTS FOR PARALLEL OPERATION OF LARGE-SIZE GENERATING FACILITIES GREATER THAN 25,000 KILOWATTS
OPERATING, METERING AND EQUIPMENT PROTECTION REQUIREMENTS FOR PARALLEL OPERATION OF LARGE-SIZE GENERATING FACILITIES GREATER THAN 25,000 KILOWATTS AND MEDIUM-SIZE FACILITIES (5,000-25,000KW) CONNECTED
More informationMinnesota Power Systems Conference 2015 Improving System Protection Reliability and Security
Minnesota Power Systems Conference 2015 Improving System Protection Reliability and Security Steve Turner Senior Application Engineer Beckwith Electric Company Introduction Summarize conclusions from NERC
More informationwww. ElectricalPartManuals. com Transformer Differential Relay MD32T Transformer Differential Relay
Transformer Differential Relay The MD3T Transformer Differential Relay is a member of Cooper Power Systems Edison line of microprocessor based protective relays. The MD3T relay offers the following functions:
More informationRelay Performance During Major System Disturbances
Relay Performance During Major System Disturbances Demetrios Tziouvaras Schweitzer Engineering Laboratories, Inc. Presented at the 6th Annual Conference for Protective Relay Engineers College Station,
More informationPSV3St _ Phase-Sequence Voltage Protection Stage1 (PSV3St1) Stage2 (PSV3St2)
1MRS752324-MUM Issued: 3/2000 Version: D/23.06.2005 Data subject to change without notice PSV3St _ Phase-Sequence Voltage Protection Stage1 (PSV3St1) Stage2 (PSV3St2) Contents 1. Introduction... 2 1.1
More informationModular range of digital protection relays
S e p a m s e r i e s 2 0, 4 0, 8 0 Modular range of digital protection relays Fast Dependable Simple Fast response Maximum dependability Your electrical equipment is under control. With Sepam protection
More informationBUS2000 Busbar Differential Protection System
BUS2000 Busbar Differential Protection System Differential overcurrent system with percentage restraint protection 1 Typical Busbar Arrangements Single Busbar Double Busbar with Coupler Breaker and a Half
More informationMulti Differential Relay, MDR-2 DESCRIPTION OF OPTIONS
Multi Differential Relay, MDR-2 DESCRIPTION OF OPTIONS Option C4 Block differential current protection Description of option Functional descriptions Parameter list Document no.: 4189340397C SW version:
More information489 Generator Management Relay
GE Grid Solutions 489 Generator Management Relay Instruction Manual Product version: 4.0x GE publication code: 1601-0150-AM (GEK-106494W) 1601-0150-AM Copyright 2016 GE Multilin Inc. All rights reserved.
More informationImproving Transformer Protection
Omaha, NB October 12, 2017 Improving Transformer Protection Wayne Hartmann VP, Customer Excellence Senior Member, IEEE Wayne Hartmann Senior VP, Customer Excellence Speaker Bio whartmann@beckwithelectric.com
More informationBus Protection Fundamentals
Bus Protection Fundamentals Terrence Smith GE Grid Solutions 2017 Texas A&M Protective Relay Conference Bus Protection Requirements High bus fault currents due to large number of circuits connected: CT
More informationTransformer Fault Categories
Transformer Fault Categories 1. Winding and terminal faults 2. Sustained or uncleared external faults 3. Abnormal operating conditions such as overload, overvoltage and overfluxing 4. Core faults 1 (1)
More informationIDAHO PURPA GENERATOR INTERCONNECTION REQUEST (Application Form)
IDAHO PURPA GENERATOR INTERCONNECTION REQUEST (Application Form) Transmission Provider: IDAHO POWER COMPANY Designated Contact Person: Jeremiah Creason Address: 1221 W. Idaho Street, Boise ID 83702 Telephone
More informationMicrogrid Protection
Panel: Microgrid Research and Field Testing IEEE PES General Meeting, 4-8 June 7, Tampa, FL Microgrid Protection H. Nikkhajoei, Member, IEEE, R. H. Lasseter, Fellow, Abstract In general, a microgrid can
More informationAPPLICATION: The heart of the system is a DSR 100 Digital Static Regulator used in conjunction with standard SCR based rectifier bridges.
APPLICATION: Basler Electric offers a New Line of digitally controlled brush (static) or brushless excitation systems designed for use with existing Hydro, Gas as well as Diesel driven generators requiring
More informationBED INTERCONNECTION TECHNICAL REQUIREMENTS
BED INTERCONNECTION TECHNICAL REQUIREMENTS By Enis Šehović, P.E. 2/11/2016 Revised 5/19/2016 A. TABLE OF CONTENTS B. Interconnection Processes... 2 1. Vermont Public Service Board (PSB) Rule 5.500... 2
More informationTurn-to-Turn Fault Detection in Transformers Using Negative Sequence Currents
Turn-to-Turn Fault Detection in Transformers Using Negative Sequence Currents Mariya Babiy 1, Rama Gokaraju 1, Juan Carlos Garcia 2 1 University of Saskatchewan, Saskatoon, Canada 2 Manitoba HVDC Research
More informationSimulation of Generator Over-Flux Protection using MATLAB
Simulation of Generator Over-Flux Protection using MATLAB M V Sudhakar 1, Lumesh Kumar Sahu 2 M. Tech Scholar, Dept. of Power System and Controls, Kalinga University, NayaRaipur, CG, India 1 Asst. Professor,
More informationPIPSPC. Prepared by Eng: Ahmed Safie Eldin. And. Introduction. Protection Control. Practical. System. Power
PIPSPC Practical Introduction Power System Protection Control Practical Introduction To Power System Protection And Control Prepared by Eng: Ahmed Safie Eldin 2005 Contents POWER SYSTEMS PRINCIPALS. 1
More informationEffects of Harmonic Distortion I
Effects of Harmonic Distortion I Harmonic currents produced by nonlinear loads are injected back into the supply systems. These currents can interact adversely with a wide range of power system equipment,
More informationModular multifunction generator protection
Modular multifunction generator Page 1 Issued June 1999 Changed since July 1998 Data subject to change without notice (SE970186) Features is a modular generator that enables selection of the desired in
More informationProblems connected with Commissioning of Power Transformers
Problems connected with Commissioning of Power Transformers ABSTRACT P Ramachandran ABB India Ltd, Vadodara, India While commissioning large Power Transformers, certain abnormal phenomena were noticed.
More informationPower System Protection Part VII Dr.Prof.Mohammed Tawfeeq Al-Zuhairi. Differential Protection (Unit protection)
Differential Protection (Unit protection) Differential Protection Differential protection is the best technique in protection. In this type of protection the electrical quantities entering and leaving
More informationXN2 - Mains decoupling relay. Manual XN2 (Revision C)
XN2 - Mains decoupling relay Manual XN2 (Revision C) Woodward Manual XN2 GB Woodward Governor Company reserves the right to update any portion of this publication at any time. Information provided by Woodward
More informationAppendix C-1. Protection Requirements & Guidelines Non-Utility Generator Connection to Okanogan PUD
A. Introduction Appendix C-1 Protection Requirements & Guidelines to Okanogan PUD The protection requirements identified in this document apply to Non-Utility Generating (NUG) facilities, Independent Power
More informationRAIDK, RAIDG, RAPDK and RACIK Phase overcurrent and earth-fault protection assemblies based on single phase measuring elements
RAIDK, RAIDG, RAPDK and RACIK Phase overcurrent and earth-fault protection assemblies based on single phase measuring elements User s Guide General Most faults in power systems can be detected by applying
More informationNERC Protection Coordination Webinar Series June 9, Phil Tatro Jon Gardell
Power Plant and Transmission System Protection Coordination GSU Phase Overcurrent (51T), GSU Ground Overcurrent (51TG), and Breaker Failure (50BF) Protection NERC Protection Coordination Webinar Series
More informationA Tutorial on the Application and Setting of Collector Feeder Overcurrent Relays at Wind Electric Plants
A Tutorial on the Application and Setting of Collector Feeder Overcurrent Relays at Wind Electric Plants Martin Best and Stephanie Mercer, UC Synergetic, LLC Abstract Wind generating plants employ several
More informationDIGITAL EXCITATION SYSTEM PROVIDES ENHANCED PERFORMANCE AND IMPROVED DIAGNOSTICS
DIGITAL EXCITATION SYSTEM PROVIDES ENHANCED PERFORMANCE AND IMPROVED DIAGNOSTICS C. Allan Morse Member, IEEE Eaton / Cutler Hammer 221 Heywood Road Arden, NC 2874 C. Richard Mummert Member, IEEE Eaton
More informationIssued: September 2, 2014 Effective: October 3, 2014 WN U-60 Attachment C to Schedule 152, Page 1 PUGET SOUND ENERGY
WN U-60 Attachment C to Schedule 152, Page 1 SCHEDULE 152 APPLICATION FOR INTERCONNECTING A GENERATING FACILITY TIER 2 OR TIER 3 This Application is considered complete when it provides all applicable
More informationPower Plant and Transmission System Protection Coordination
Technical Reference Document Power Plant and Transmission System Protection Coordination NERC System Protection and Control Subcommittee December 2009 Draft for PC Approval Revision 1 July 2010 Table of
More informationCork Institute of Technology. Autumn 2008 Electrical Energy Systems (Time: 3 Hours)
Cork Institute of Technology Bachelor of Science (Honours) in Electrical Power Systems - Award Instructions Answer FIVE questions. (EELPS_8_Y4) Autumn 2008 Electrical Energy Systems (Time: 3 Hours) Examiners:
More informationUsing a Multiple Analog Input Distance Relay as a DFR
Using a Multiple Analog Input Distance Relay as a DFR Dennis Denison Senior Transmission Specialist Entergy Rich Hunt, M.S., P.E. Senior Field Application Engineer NxtPhase T&D Corporation Presented at
More information