process bus busbar protection –a stepping stone towards...
TRANSCRIPT
Process bus busbar protection – A stepping stone towards digital
substation
Terrence Smith – GE Grid Solutions
Busbar protection
Bay unit
Central unit
Bay unit
Bay unit
Bay unit
Bay unit
Bay unit
Bay unit
Bay unit
Proprietary Protocol
(Fibre optic)
CT, Isolator status, CB status,
Protection trip
Merging unit Bay unit
Central unit
Merging unit Bay unit
Merging unit Bay unit
Merging unit Bay unit
Merging unit Bay unit
Merging unit Bay unit
Merging unit Bay unit
Merging unit Bay unit
IEC61850-9-2LE Sample values(Fibre optic)
Proprietary Protocol
(Fibre optic)
CT, Isolator status, CB status,
Protection trip
Merging unit
Central unit
Merging unit
Merging unit
Merging unit
Merging unit
Merging unit
Merging unit
Merging unit
CT, Isolator status, CB status,
Protection trip
IEC61850-9-2LE Sample values(Fibre optic)
• Conventional busbar protection
• Process bus busbar protection
• New process bus busbar protection
Busbar protection with redundant comm
• Conventional distributed busbar protection
• New process bus busbar protection
• The process bus busbar protection is not a new nor special application. It is simply the field proven concept of a distributed busbar protection system, using merging units, sampled values, GOOSE and IEEE 1588 as opposed to dedicated bay units and proprietary communications.
Busbar protection with redundant comm
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Main 1)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
MU = Merging unit
EthernetSwitch
EthernetSwitch
100Mbps PRP 1Gbps PRP 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Main 1)
Process bus
Relay’s CPU
Port 1
Port 2
MU = Merging unit
MMS buffered report, unbuffered report,
GOOSE
1Gbps HSR 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP
• Busbar protection with PRP • Busbar protection with HSR
Main 1 & 2 Busbar protection
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Main 1)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
Busbar relay(Main 2)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
MU = Merging unit
EthernetSwitch
EthernetSwitch
100Mbps PRP 1Gbps PRP 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Main 2)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
Busbar relay(Main 1)
Process bus
Relay’s CPU
Port 1
Port 2
MU = Merging unit
MMS buffered report, unbuffered report,
GOOSE
1Gbps HSR 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP
• Busbar protection with PRP • Busbar protection with HSR
Busbar protection for larger substation
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Bay 1-18)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
Busbar relay(Bay 19-36)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
MU = Merging unit
EthernetSwitch
EthernetSwitch
100Mbps PRP 1Gbps PRP 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Bay 16-32)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
Busbar relay(Bay 1-16)
Process bus
Relay’s CPU
Port 1
Port 2
MU = Merging unit
MMS buffered report, unbuffered report,
GOOSE
1Gbps HSR 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP
• Busbar protection with PRP • Busbar protection with HSR
Total redundantMU
MUMU
MUMU
MUMU
MUMU
MUMU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
1Gbps HSR
1Gbps HSR
Busbar relay(Main 1)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Busbar relay(Main 2)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSETwo independent 1Gbps HSR Rings
1Gbps HSR Ring for CT set 2
1Gbps HSR Ring for CT set 1
Redu
ndan
t MU
from
CT s
et 2
Redu
ndan
t MU
from
CT s
et 1
• Two HSR is NOT QuadBox, but two independent HSR• The relay has ability to detect the discrepancy
between the CT set 1 and CT set 2
Testing & Monitoring
Relay toolsuite software
network analyserssoftware
SV and GOOSE simulator
Current injection test set
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Main 1)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
MU = Merging unit
EthernetSwitch
EthernetSwitch
100Mbps PRP 1Gbps PRP 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTPCT, Isolator status, CB status,
Protection trip
• Busbar communication is no longer a blackbox.
• Busbar testing can be simplified to test the merging units and busbar protection relay separately
Testing Process bus busbar
• IEC61850 simulation mode allows simulating SV and GOOSE messages to the network and only devices operating in simulation mode will subscribe to and use these simulated messages for testing purpose.
• IEC 61850 test mode allows the relay application to operate normally but all the relay outputs are blocked
Application in Conventional substation
• GPS or Absolute time synchronization for protection is not normally required in the conventional substation. Process bus busbar relay can have IEEE 1588 boundary clock capability.
• All merging units are synchronized to the same source, the busbar protection relay, the sampled values streams can be aligned and used for the low impedance busbar differential protection.
• This therefore allows the application of the same process bus busbar protection in a conventional substation without the need of a satellite clock or absolute time synchronization.
Stepping stone to digital substation
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
MU
Busbar relay(Main 2)
Process bus
Relay’s CPU
MMS buffered report, unbuffered report,
GOOSE
Port 1
Port 2
Busbar relay(Main 1)
Process bus
Relay’s CPU
Port 1
Port 2
MU = Merging unit
MMS buffered report, unbuffered report,
GOOSE
1Gbps HSR 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP • Installing process bus busbar system in a conventional substation becomes the first step towards a fully digital substation
• Merging units are installed in all bays, along with a process bus network encompassing all bays.
• Future relay refurbishments for bays and zones will involve simply connecting relays to the existing network and merging units.
Stepping stone to digital substation
Bay
nBa
y ..
Bay
3Ba
y 2
Bay
1QuadBox
QuadBox Busbar relay(Main 1)
Process bus
Relay’s CPU
Port 1
Port 2
MU = Merging unit
MMS buffered report, unbuffered report,
GOOSE
Main 1 relayMU
Main 2 relay
Main 1 relayMU
Main 2 relayMain 1 relay
MUMain 2 relay
QuadBox
Main 1 relayMU
Main 2 relayQuadBox
Main 1 relayMU
Main 2 relayQuadBox
Busbar relay(Main 2)
Process bus
Relay’s CPU
Port 1
Port 2
MMS buffered report, unbuffered report,
GOOSE
1Gbps HSR 100Mbps PRP
IEC61850-9-2LE Sample values, IEC61850-8-1 GOOSE,
IEC61850-9-3 PTP
100Mbps HSR
IEC61850-9-2LE Sample values,IEC61850-8-1 GOOSE, IEC61850-9-3 PTP