Authors: Roy Moxley, Farel Becker Siemens,...
19
Adaptable Protection Authors: Roy Moxley, Farel Becker Siemens, USA Texas A&M Relay Conference 2018
Transcript of Authors: Roy Moxley, Farel Becker Siemens,...
Adaptable Protection
Authors:Roy Moxley, Farel BeckerSiemens, USA
Texas A&M Relay Conference 2018
Constantly and/or Automatically Changing Settings
CRAZY
Renewables Impact Transmission and Distribution
Replacing Nuclear with Wind
High AvailabilityHigh InertiaDynamic Voltage SupportSignificant Fault Contribution
Non-DispatchableLow InertiaNo Dynamic Voltage SupportMinimal Fault Contribution
Page 4
Massive Wind Farms Installed and Planned for the North Sea
8 GW Installed and 2.9 Awaiting Installation
Loss of Northern Power Plant
Loss of 80% Power Transfer
Power Oscillation
Page 6
P=V1V2sinΘ/X
System Impact of a Line Trip
Loss of 50 MW Power Transfer
Loss of 13 MVar
Page 7
Power Plant Trip in Southern Area
Loss of about 600 MW
Page 8
Impact of System Changes On Protection Settings
Fault Duty – Overcurrent PickupCritical Clearing Time, Breaker Failure
Load Changes – Load EncroachmentOvercurrent Coordination
Load Balance – Islanding ConsiderationsPower Swing Settings
Real – World Distribution Example
Real – World Transmission ExampleNot Knowing Compromises Protection
A
B
C
10 kA
10 kA 10 kA
6 Ohms 4 Ohms
4 Ohms
Headlines Impact System Stability
Note the Concentration of Nuclear Plants along the West Edge and the SouthWest
Current Account Balance
2013 2023
Bulk Power Flows
Adjusting to Dynamic Load Limits
Changing Setting Groups and Files
In Service Application Considerations
Setting Groups and Setting Files
Loss of Protection during Group Change ?Time Required for Setting File Input ?Security of File Transfer
Time RequiredControl Center CalculationsData TransmissionTime inside relay
In Service Results
Setting Groups and Setting Files
No Loss of Protection during Group Change
Security of File Transfer
Time to Transfer and Implement New Settings File10 Seconds for Control Center Calculations and transmission1 second within the relay
SecurityEncrypted files to Station and to RelayBackup / Fallback Settings Always in Place
Questions
Author
Roy MoxleyPrincipal Power Systems ConsultantSiemens Industry, Inc. Mobile: (509) [email protected]
Page 19
