Method of Operation | Siemens 7SA511 instruction

7SA511 Line Protection RelayReference A

Method of Operation

Table of Contents
A. Method of Operation	A-5
A.1 Overview of Hardware and Protection Functions	A-5
A.2 Distance Protection Overview	A-7
A.2.1 Ground Fault Detection and Processing	A-8
A.2.2 Overcurrent Fault Detection	A-9
A.2.3 Polygonal Impedance Fault Detection (Optional)	A-10
A.2.4 Voltage Controlled Overcurrent Fault Detection (Optional)	A-12
A.3 Determination of the Faulted Loops	A-15
A.3.1 Verification of the Faulted Loop(s)	A-15
A.3.2 Fault Loop Determination in Grounded Systems	A-17
A.3.3 Fault Loop Determination in Ungrounded Systems (Optional)	A-19
A.4 Fault Impedance Calculation	A-24
A.4.1 Impedance Calculation on the Protected Line	A-24
A.4.2 Correction for Parallel Lines (Optional)	A-26
A.5 Directional Determination	A-27
A.5.1 Directional Characteristics	A-27
A.5.2 Directional Characteristics without Load	A-28
A.5.3 Directional Characteristics with Load	A-30
A.6 Tripping Characteristics and Logic	A-32
A.6.1 Tripping Characteristics	A-32
A.6.2 Tripping Logic	A-33
A.7 Switch-Onto-Fault Protection	A-36
A.8 Emergency Overcurrent Protection	A-36
A.9 Power Swing Function	A-37
A.9.1 Detection of Power Swings	A-38
A.9.2 Power Swing Blocking	A-40
A.9.3 Power Swing (Out-of-Step) Trip	A-40
A.10 Pilot Protection	A-41
A.10.1 Permissive Underreach Transfer Trip With Fault Detection	A-45
A.10.2 Permissive Underreach Transfer Trip With Zone Z1B	A-46
A.10.3 Permissive Overreach Transfer Trip With Zone Z1B	A-47
A.10.4 Permissive Overreach Transfer Trip With Fault Detection Zone	A-48
A.10.5 Permissive Overreach Transfer Trip Unblock Scheme with Zone Z1B	A-50
A.10.6 Permissive Overreach Transfer Trip Unblock Scheme With Fault Detection	A-53
A.10.7 Blocking Scheme With Zone Z1B	A-54
A.10.8 Z1B Blocking via Pilot Wires	A-56
A.10.9 Reverse Interlocking	A-58
A.10.10 Echo Keying Function (Weak-Feed Compensation)	A-59
A.10.11 Transient Blocking	A-60
A.11 Isolated Ground Fault Detection (Optional)	A-61
A.11.1 Fault Detection	A-61

July 27, 1995

A-1

Image 181

Siemens 7SA511 manual Method of Operation

Contents

7SA511 Numerical Line Protection Relay Page Table of Contents July 27 List of Figures Table of Contents This page intentionally blank If you want to Using This ManualThen read Abbreviations and Acronyms Glossary of Terms and Abbreviations Terms Reclaim time PickupReverse Stage Line Protection Relay 7SA511 Ground fault detection input This page intentionally blank Product Description 7SA511 Line Protection Relay Product Description About the Relay Relay Setting Types Relay Features Address Relay Setting Descriptions by Address BlockLCD Text Description 4000 Annunciations Operational Annunciations Last Fault Fault detection options FeatureOverview of Protection Functions Distance Protection Feature Emergency Overcurrent Protection Power Swing Protection optionalPilot Protection High-Resistance Ground Fault Protection optional Automatic Reclose optional Distance-to-Fault Location Secured Data Storage Additional Functions and Features of the RelaySerial Data Ports Front Panel Port Multiple Parameter Sets optional Acceptance Tests 7SA511 Line Protection Relay Acceptance Tests IEC Ansi Rated Voltage Test EquipmentInrush peak Reading the Initial Display Energizing the Relay Or Direkteadresse Verifying the Language Setting If the display shows Then Relay Settings for Acceptance Tests Power Consumption Test Power Supply TestRelay Terminal Connections Test Equipment Relay Alarm Relay Contact Test Current and Frequency Metering Test Metering TestsModel No Current Input Connections Addr. No Voltage Input Connections Addr. No LCD Text Voltage Metering TestTolerance Addr Binary Input TestIndex No Input LED Test Minus 14. LED Test Current Input Connections Addr LCD TextEMERG.O/C on Signal and Trip Relay Test Overcurrent Fault Detection Test Testing the Fault Detection SystemsPrerequisite Settings Addr LCD Text Setting Voltage-Controlled Overcurrent Fault Detection Test Optional Prerequisite Setting Addr. LCD Text Prerequisite Setting Addr LCD Text Impedance Fault Detection Test optionalImpedance Zone VP/V = KRRAIP/IN Testing the Distance Zones Fault Type Setting value X of the distance zone to be checked Zone Test Type Independent Zones Z1, Z2, and Z3Overreach Zones Z1B and Z1L Power Swing Exist PROGR. OUT-OF-STEP Trip Testing the Power Swing Blocking Function OptionalCoordination Times Addr Setting Option Description Signal Transmission TestTest Permissive Underreach Transfer Trip Putt Putt Mode Action Zone Expected Result Setting at AddressPott Mode Permissive Overreach Transfer Trip Pott Revers Interlock Emergency Overcurrent Protection Test High-Set Overcurrent Initial SetupDIST. PROT. NON-EXIST EMERG. O/C Exist Definite Time Ov rcurrent Protection Overcu rent T Procedure Definite Time High-Set Input/Output Units FNo Inverse Time Testing the Automatic Reclose AR Function Optional End of Acceptance Testing Prerequisite Settings Addr LCD Text Description This page intenionally blank Installation 7SA511 Line Protection Relay Installation 7SA511 Receiving and Handling the Relay Storing the Relay Preparing the Relay for Installation Removing the Relay’s Front Cover Removing/Installing Relay Modules Removing the additional I/O module Removing the basic moduleInserting the additional I/O module Printed Circuit Board Locations Inserting the basic moduleChanging the Binary Input Voltage Range Installing the Backup Battery Battery Installation Procedure View a View a Mounting the Relay General Connection Drawings Connecting the Relay to Your System Line-NeutralVL2 Voltage Inputs Wire Port #8 Ring lugs #10 Ring lugs Voltage, Signal & Tripping Terminal Block B a 14. VT Circuits Phase CTs with residual connection For ground faults T. connection with broken-delta for optimum Pilot Wire Connection Diagrams StationB Station This page intentionally blank Programming the Relay 7SA511 Relay’s Operator Panel Operator Panel Introduction 7SA511 Keypad Display Panel On/Off switchNameplate LEDs Reserved Area for LED Labels General Procedures for Programming the RelayFront Serial Data Port KeyFunction Placing the Relay in Programming Mode Using the Navigation KeysSelecting an Dress Key You wa to choose is displayed on the LCD Changing a S tting Step Action Result By use of the key Saving New SettingsEnabling the Relay for Substation Control Optional Waveform Capture Settings PresetAddr LCD Text Description Options/Range Fault detection pickup Trip command Baud If address 2802 setting is Relay Scope of Functions Options Operating SettingsSection Operating Parameters DD.MM.YYYY By Fault Detec Language OPER. Baud Date Format Fault IndicMM/DD/YYYY By Trip Command English Date Real-Time ClockSet Time Difference Time Parameter Changeover Optional Synchronizing the Clock Configuring Each Parameter in Each Set Configuring a Parameter SetAccesses this parameter set PARAM.C/O Copying Parameter Sets Selecting the Active Parameter Set Address Copy Action Power System Settings System SettingsDeactivating Parameter Changeover Settings for Measured Value Monitoring Fuse Fail Distance Protection Settings Addr. Block Fault Loop Earthed Network Fault Loop NON-EARTHED NETZ1B Z1L General Settings Independent Zones Z1, Z2, Z3 Controlled Overreach Zones Z1B and Z1L Zone & Description Preset Prerequisite Settings Addr. LCD Text Overcurrent Fault Detection SettingsZone & Description Exist U/I Voltage Controlled Overcurrent Fault DetectionPROG. U/I Exist Impedance Zone Polygonal Impedance Fault DetectionPROG. ZA RA1 RA2 RAE Preset Options/Range Determination of the Fault Loop for Grounded SystemsLCD Text Description Phase Pref Power Swing Protection 2000 OptionalL3L1 Acyclic Exist Impedance Zone Exist Permissive Underreach Transfer Addr LCD Text Description Preset Permissive Overreach Transfer Putt Mode SEND-PRL REC-PROL SEND-DELZ1B Acceleration OFF FD Acceleration SEND-DEL Echo ECHO-DEL ECHO-IMP ECHO-BLO Pott Mode Transblo Wait TB SEND-PRLZ1B Release Forwards Stage MAN. Close Exist Compensated Isolated EarthfaultCT ERR CT ERR. F1 CT ERR. F2 Directional D.T. Solidly Earthed Directional Protection With Nondirectional Backup Direction NON-DIR DirectBlock DIREC. Comparison Solidly Earthed Nondirectional, Inverse Time Overcurrent Protection Description PresetCharac Normal Inverse Option Device Configuration for Automatic RecloseInternal AR Addr LCD Text Description Preset Options/Range Automatic Reclose Function SettingsTerminology Prerequisite Setting Addr LCD Text Description Fault Location Settings Function Turning the Relay Functions On and OffSee Section Compar Echo Procedure for Configuring the Logical Functions Configuration Settings BelowFAILU. RELAY424V Addr Unit Index No PresettingsLCD Text 2nd line AR on no AR OFF no LED Binary Inputs LED Indicators Signal RelaysTrip Relays This page intentionally blank Displaying System and Relay Information This page intentionally blank Using the Operator Panel to Display Information Event Log Ess. ANNUNCIATIONS5000 Event Log Messages Storage and Display DescriptionLCD Text 2nd line Description Possible Tag Binary Inputs Monitoring Functions General Ground Fault Protection Power Swing FunctionAutomatic Reclose Function Circuit Breaker Test Function Target Log for All Systems 5200, 5300, Table Status 7SA511 Line Protection Re ay Chapter Example Sys em Fault Messages Command. DisTrip46 23C LCD Text 2nd line Description Target Log MessagesDistance Protection High-Resistance Ground Fault Protection in Grounded Systems Fault LocationEmergency Overcurrent Protection Automatic Reclose Began. E/FDetection002104357 C Circuit Breaker Operation Statistics Isolated Ground Fault Data Log Messages Operational Measured Values Reading the Measured Values As a percentage of VN Primary specified at address Waveform Capture Access Start End PortMax. Rec. Time After Pickup Total Maximum Recording Time 33..100 Commissioning the Relay 7SA511 Line Protection Relay Commissioning the Relay Relay Commissioning Tests Verifying the Installation and Relay Configuration Symmetry Error Current, Voltage, and Phase Sequence ChecksSummation Error Guidelines for Commissioning the Relay Directional Test Using Load Current Phase Sequence Check Measurement Loop Test Procedure July 27 Checking the Carrier Transmission System Overreach Zone Comparison Via Pilot Wires Overreach Pilot Wire Comp Teleprotec Pott ModeReverse Interlocking Overreach Revers Interlock Carrier Transmission With Release Signal Carrier Transmission With Underreach Transfer Signal Carrier Transmission With Blocking SignalOverreach Z1B Blocking DIREC.COMPARISON OFF If address 2102 setting is CB Auxiliary Contact Control Circuit Breaker Trip Test 4401 4402 4403 4404 Automatic Reclose Test 4300 Optional Setting Options & DescriptionsLCD Text & Description AUTO-RECL TestProcedure Returning the Relay o Op rating Status LCD ext This page intentionally blank Maintenance 7SA511 Line Protection Relay Maintenance Electrostatic Discharge Possible equipment damage Inspecting the Power Supply Fuse Tracing Hardware and Software FaultsTroub eshooting Tips Replacing the Backup Battery Erasing Stored Data Storing Relays That are Taken Out of Service Preset OptionsReset Counters ? What To Do With Defective Relays This page intentionally blank Method of Operation Figure A-1Hardware Structure of the 7SA511 Relay Figure A-18. Power Swing 7SA511 Line Protection Relay Overview of Hardware and Protection Functions Power System Bus Distance Protection Overview Voltage Subsystem Ground Fault Detection and Processing Overcurrent Fault Detection PHASE-PHASE Polygonal Impedance Fault Detection Optional Phase angle with the R intersection applicable Voltage Controlled Overcurrent Fault Detection Optional Resultant Annunciation Loop Fault Detection Module Measured Ground Fault Current Voltage − I L Is replaced by Which gives us Fault Loop Determination in Grounded Systems Fault Detection Phases 2PH-E Flts = PHASE-PHASE Leading PH-E Lagging PH-E Fault Loop Determination in Ungrounded Systems Optional3PH Faults = Control 3PH Faults = PH-E only