- Curse Code: #PSP4
- Delivery: Online (Google Meet/ MS Meet) or Face-to-face
- Duration: 5 days
- Instructor: Dr. Saeed Roostaee
INTRODUCTION TO POWER SYSTEM PROTECTION
Importance of the Protection System
References
HV equipment
Protection Panel
TCS Relay
Trip Relay
Lockout Relay
Protection Single Line Diagram
What do we want to protect?
Function of protection systems
Protection system elements
How does the protection system work?
INTRODUCTION TO NUMERICAL RELAY IEDS
Structure of Numerical Relay
Architecture of the Numerical Relay Multifunction Protection Relays
Example: Feeder Protection
Block diagram for typical numerical relays
Digital Phasor Measurement
Numerical Relay Calculations
Properties of SIPROTEC 5
Current transformer connections
Voltage transformer connection
SIPROTEC connection diagrams
START WITH DIGSI 5
DIGSI 5 installation
SIPROTEC drivers
Start with DIGSI 5
DIGSI 5 function library
SIPROTEC 5 config procedure
Embedding of Functions in the Device
PRACTICAL SECTION: WORKING ONLINE WITH THE RELAY
SIPROTEC 5 Web browser
Set date and time
Monitor binary inputs, outputs, and LEDs
Change parameters in the relays
Reading Indications from the PC
Operational Log
Fault Log
GroundFault Log
Fault Recording
Fault recorder settings
Fault recorder config
Download fault records
Indication snapshots
PRACTICAL SECTION: RELAY MEASUREMENTS
Inject the three phase values to the relay and monitor the relay measurements
Monitor relay phasor values
Relay binary inputs / outputs test
Operational value in the relay
Check phasor values in the relay
FAULT SIMULATIONS
Fault types
Single phase fault simulation
Three phase fault simulation
Earth fault simulation
OVERCURRENT ANSI 50/51
How OC relay works
Overcurrent DT 50
Overcurrent IT 51
Overcurrent curves
How to config OC protection
How to test OC protection
PRACTICAL SECTION: OVERCURRENT TEST
Config OC in DIGSI 5
Config fault logs in SIPROTEC 5
Config fault recorder
Inject three phase faults
Monitor OC signals
Set several fault signals and test OC
Analyze of fault log
Extract fault recorder
PRACTICAL SECTION: COMTRADE VIEWER (SIGRA OR OTHER TOOLS)
Comtrade format
Import and config fault record in SIGRA
Time signals
Harmonic signals
Binary signals
RMS and Instantaneous values
EARTH FAULT PROTECTION
IE calculation
IE measurements
Config earth fault protection
Earth log config in DIGSI 5
PRACTICAL SECTION: TEST EARTH FAULT PROTECTION FUNCTION
Earth fault protection (ANSI 50N/51N)
Set test sequence
Inject earth fault values to the relay
Monitor IE in the relay
CT connection Types
Monitor earth fault current in the SIPROTEC 5 relays with different CT Connection types
Simulate several earth faults and test the function in the relay
PRACTICAL SECTION: NEGATIVE SEQUENCE CONFIG AND TEST
Negative sequence protection function (ANSI 46)
Config Neg Seq protection in SIPROEC 5
Fault simulation and set test sequences
Inject the values and monitor the Negative sequence signals
Analyze relay logs and recorders
PRACTICAL SECTION: VOLTAGE PROTECTION CONFIG AND TEST
Over/ under voltage protection function (ANSI 27/59)
Config Overvoltage and under voltage
Set test sequences
Voltage protection testing
Analyze fault logs and recorders
PRACTICAL SECTION: DIRECTIONAL OVERCURRENT PROTECTION
Why Directional overcurrent protection
How to config Directional overcurrent protection ANSI 67 in SIPROTEC 5
Simulate fault in forward direction
Simulate fault in backward direction
Create test sequences to test Direction OC Protection
Playback the signals and monitor the 67 function signals
Check relay fault logs and records
PRACTICAL SECTION: 67N DIR. OVERCURRENT PROTECTION GROUND
Why 67N?
How 67N works?
How to config 67N?
Fault simulation to test 67N
Create test sequences to test 67N
Test 67N with simulated signals
Analyze relay fault logs with 67N operation
Analyze fault record with 67N operation
PRACTICAL SECTION: CIRCUITBREAKER FAILURE PROTECTION
Why 50BF Circuitbreaker failure protection
CBF logic
How to config CBF function
CBF signals
CBF Test in SIPROTEC 5
PRACTICAL SECTION: TCS AND CCS
Trip circuit supervision with 1 & 2 binary inputs
Closingcircuit supervision with 1 & 2 binary input
How to config TCS and CCS in SIPROTEC 5 relays
DIFFERENTIAL PROTECTION FUNCTION
How diff protection works
High Impendence differential protection function
Low Impendence diff protection
IMPENDENCE PROTECTION FUNCTIONS
Why Impendence protection
How impedance protection function works
PRACTICAL SECTION: THERMAL OVERLOAD PROTECTION
Thermal Overload Protection, Rotor Config in DIGSI 5
Overview & Structure of the Thermal Overload Protection
Thermal Overload Protection settings
Set test sequences to test the Thermal Overload Protection
Logs and records for the Thermal Overload Protection
Thermal Overload Protection signals
MOTOR PROTECTION
Protection Functions for various fault types
Motor starting
Motor Protection ANSI code
ANSI 50 / 51 – Phase overcurrent
ANSI 50N / 51N or 50G/ 51G – Earth fault
ANSI 46 – Negative sequence / unbalance
ANSI 49RMS – Thermal overload
ANSI 48 / 51LR /14 – Locked rotor / excessive starting time
ANSI 66 – Starts per hour
ANSI 38 / 49T – Temperature monitoring
ANSI 27 – Undervoltage
Motor protection single line diagram
SIPROTEC motor protection connections
PRACTICAL SECTION: MOTORSTARTING TIME SUPERVISION
MotorStarting Time Supervision config in DIGSI 5
Overview & Structure of the MotorStarting Time Supervision
Set test sequences and playback the signals to the relay
Monitor MotorStarting Time Supervision signals
MotorStarting Time Supervision settings
PRACTICAL SECTION: MOTOR RESTART INHIBIT
Motor Restart Inhibit Config in DIGSI 5
Overview & Structure of the Motor Restart Inhibit
Motor Restart Inhibit Settings
Set test sequences to test the Motor restart inhibit function
Logs and records for the motor restart inhibit
Monitor Motor Restart Inhibit Signals
PRACTICAL SECTION: LOADJAM PROTECTION
LoadJam Protection Motor config in DIGSI 5
Overview & Structure of the LoadJam Protection Motor
LoadJam Protection Motor settings
Set test sequences to test the LoadJam Protection
Logs and records for the LoadJam Protection
LoadJam Protection Motor signals
PRACTICAL SECTION: UNDERCURRENT PROTECTION
Why under current protection
How to config under current protection in DIGSI 5
Set test sequences to test undercurrent protection
Test undercurrent protection
Check the relay logs for the undercurrent signals
BUSBAR PROTECTION
Busbar Protection Introduction
Busbar Differential Protection
Install 7SS85 device driver
Config single Busbar arrangement in DIGSI 5
Config 1.5 busbar arrangement in DIGSI 5
Disconnector image
Config double busbar arrangement in DIGSI 5
LINE PROTECTION
Transmission Line Faults
Line protection functions
Directional Overcurrent
Directional Earth Fault
Distance Protection
Why Use Distance Protection?
Distance protection zones
PRACTICAL SECTION: FAULT LOCATION
Impedance based fault location
Set test sequences to test fault location
Test fault location
Check logs for fault location
PRACTICAL SECTION: AUTORECLOSER
Why autorecloser
Autorecloser config
Set test sequences to test Autorecloser
Test the autorecloser function
Check the relay logs for autorecloser signals
GENERATOR PROTECTION
Generator Introduction
Generator connection
Faults in Generators
SC behavior in Generator
Generator Protection
Generator Diff Protection ANSI 87G
Under excitation ANSI 40G
Over fluxing protection ANSI 24
Over/ Under Frequency protection ANSI 81
Reverse Power ANSI 32
Negative Sequence ANSI46
PRACTICAL SECTION: OVER EXCITATION PROTECTION
Why over excitation protection
How to config over excitation protection in DIGSI5
Set test sequences to test the over excitation protection
Check the relay fault logs for the over excitation protection
PRACTICAL SECTION: FREQUENCY PROTECTION
Why frequency protection
How to config frequency protection functions
Set test sequences to test frequency protection functions
Test the frequency protection function
Check the relay logs and records for the frequency protection signals
TRANSFORMER PROTECTION
Why Transformer Protection
Earth Fault on H.V. External Connections
PhasetoPhase Fault on H.V. External Connections Internal Earth Fault on H.V. Windings
Internal PhasetoPhase Fault on H.V. Windings Short Circuit Between Turns H.V. Windings
Earth Fault on L.V. External Connections
PhasetoPhase Fault on L.V. External Connections Internal Earth Fault on L.V. Windings
Internal PhasetoPhase Fault on L.V. Windings Short Circuit Between Turns L.V. Windings
Transformer Protection Scheme
TRANSFORMER DIFFERENTIAL PROTECTION
Transformer Differential Protection
Config Transformer Differential Protection in DIGSI 5
Set the test sequences to test the Transformer Differential Protection
Check the relay fault logs and records for differential testing
PRACTICAL SECTION: TRANSFORMERRESTRICTED EARTH FAULT
Why TransformerRestricted Earth Fault (ANSI 87N)?
How REF works?
How to config TransformerREF
In zone and out zone faults simulation
Create test sequences for internal and external faults
Test REF protection function
Analyze fault logs for the REF protection function
Analyze fault records for the REF protection function
PRACTICAL SECTION: SYNCHRONIZATION FUNCTION ANSI 25
Synchronization logics
How to config Synchronization function
Set test sequences to test the Synchronization function
Check the relay logs for the Synchronization function
PRACTICAL SECTION: LCD CONFIG
Add multiple display page
Fault display page
Add dynamic element in the display
Add measurement values in the display
PREICTAL SECTION: CFC
Add CFC charts
Create logics in the CFC
Optimize CFC chart
Compile CFC chart
Test CFC logic in offline
Test CFC in online mode
