Ahsan Mirza San Diego Gas & Electric May 1 st ,2018 TL23054/TL23055 RAS Confidential - For Internal Use Only 1
Ahsan MirzaSan Diego Gas & ElectricMay 1st,2018
TL23054/TL23055 RAS
Confidential - For Internal Use Only 1
CAISO has requested the addition of RAS functionality to
protect for the loss of TL23054 or TL23055 when the SWPL path
(TL50001/TL50004) is open. With the SWPL path open, the loss
of TL23054 or TL23055 can overload the remaining line; CAISO
has requested that SDG&E implement sequential tripping of IV
generation to relieve the overload on the remaining line.
Confidential - For Internal Use Only 2
TL23054/TL23055 RAS
3Confidential - For Internal Use Only
TL23054/TL23055 RAS
IV 500kV BusMIGUEL
TJ ROATDM CLR2
TL50001 TL50002
BK
80
BK
81
NG
BK
81
TL50003
TL50005
SUNCRESTSYCAMORE
CANYON
OTAY
MESA
ECO
TL50004
BK
82
IV
GEN 3
OCO
GEN
ECO
GEN 1
BK
83
ECO
GEN 2
BUE
GEN 1
OCOTILLO
BK
62
DU
IV 230KV Bus
IV
PST
TL23067
TL23054
TL23055
DW GEN
1,2,3,4,5
BK
80
DREW
BUE
Confidential - For Internal Use Only 4
TL23054/TL23055 RAS
TL23054
SCRTL50003
BK
81SX230kV
BK
80
TL23055
CBs 21N,
21TCBs 22N,
22T
CBs 12N,
12T
CBs 13N,
13T
With TL23055 open at SCR and/or SX, TL23054 can overload
Confidential - For Internal Use Only 5
TL23054
SCRTL50003
BK
81SX230kV
BK
80
TL23055
CBs 21N,
21TCBs 22N,
22T
CBs 12N,
12T
CBs 13N,
13T
TL23054/TL23055 RAS
RAS will operate to close TL50003 Capacitor Bypass breaker, reducing flow on TL50003 and TL23054
Confidential - For Internal Use Only 6
TL23054
SCRTL50003
BK
81SX230kV
BK
80
TL23055
CBs 21N,
21TCBs 22N,
22T
CBs 12N,
12T
CBs 13N,
13T
TL23054/TL23055 RAS
If TL23054 overload still exists, RAS will operate to send signal to IV RAS controller
7Confidential - For Internal Use Only
TL23054/TL23055 RAS
IV 500kV BusMIGUEL
TJ ROATDM CLR2
TL50001 TL50002
BK
80
BK
81
NG
BK
81
TL50003
TL50005
SUNCRESTSYCAMORE
CANYON
OTAY
MESA
ECO
TL50004
BK
82
IV
GEN 3
OCO
GEN
ECO
GEN 1
BK
83
ECO
GEN 2
OCOTILLO
BK
62
DU
IV 230KV Bus
IV
PST
TL23067
TL23054
TL23055
DW GEN
1,2,3,4,5
BK
80
DREW
SCR TL23054/23055 RAS RAS controller will initiate sequential tripping
BUE
GEN 1
BUE
Confidential - For Internal Use Only8
TL23054/TL23055 RAS
SEL-311L
S EL
SEL-311L
S EL
MIRRORED BITS
CONTROL WIRING
SEL-421
S EL
SEL-421
S EL
SEL-311L
S EL
SEL-311L
S EL
SEL-421
S EL
SEL-421
S EL
TL23054
TL23055
BK 80
BK 81
TL50003
TL OP
TL OL
TL OP
TL OL
TL23054/TL23055 RAS A Controller
TL OL
TL OP
TL OL
TL OP
TL23054/TL23055 RAS B Controller
IMPERIAL VALLEY
SUNCREST
SYCAMORE CANYON
COM25
Tx: 2Rx: 1
COM25
P4
P4
Tx: 2Rx: 1
Confidential - For Internal Use Only9
TL23054/TL23055 RAS
IV-A
COM32
S EL
COM5
OCODREW
CV DU
P2
P3 P3 P3
COM1
COM2
COM24
COM1COM2COM3 COM4 COM20
COM33
P3
SEL-3530 RTACS EL
ETH1
P2
ECO-ARAS AND
GEN. DROP
ETH1O
UT
205
OU
T20
6
OU
T20
7
OU
T20
8
Tx: 2Rx: 1
Tx: 3Rx: 1
Tx: 1Rx: 4
Tx: 2Rx: 1
Tx: 2Rx: 4
Tx: 2Rx: 3
Tx: 2Rx: 1
Tx: 1Rx: 2
SEL-2032
S EL
P1
COM31
RTU
TDM
IN1B
,IN
2B
IN1A
,IN
2A
IN1B
,IN
2B
IN1A
,IN
2A
CLR
RFL
9745
RFL
9745
SEL-3530 RTAC
MIRRORED BITS
SEL PROTOCOL
CONTROL WIRING
COPPER ETHERNET
Questions?
Confidential - For Internal Use Only 10
WISTARIA RANCH SOLAR (DW GEN 5)GEN DROP ADDITION
Confidential - For Internal Use Only 11
A new 100 MW Solar (DREW GEN 5) facility will be interconnected via a
collector station to SDG&E’s DREW (DW) Substation
– Through hardware addition of SEL-2440 RAS relays at existing DREW
substation, Gen Drop at Wistaria Ranch (DW GEN 5) will be added to
the following RAS:
• TL50001 – Instantaneous trip (Enabled during N-1 operation) – WAPS
• TL50003 – Instantaneous trip (Enabled during N-1 operation) – WAPS
• TL50004 – Instantaneous trip (Enabled during N-1 operation) – WAPS
• TL50005 – Instantaneous trip (Enabled during N-1 operation) – WAPS
• TL23040 IV 500kV N-1 – Instantaneous trip (Normally enabled) – WAPS
• Imperial Valley Bank 80 – Sequential trip (Normally enabled) – LAPS
• Miguel Bank 80/81 – Sequential trip (Normally enabled) – LAPS
12Confidential - For Internal Use Only
Gen Drop AdditionWistaria Solar (DREW GEN 5)
13Confidential - For Internal Use Only
Gen Drop AdditionWistaria Ranch Solar (DREW GEN 5)
IVMIGUEL
TJ ROATDM CLR2
TL50001 TL50002
BK
80
BK
81
NG
BK
81
TL50003
TL50005
SUNCRESTSYCAMORE
CANYON
DREW GEN 5 is connected
via TL23067 to the 230kV
Bus at DREW
OTAY
MESA
ECO
TL50004
BK
82
IV
GEN 3
OCO
GEN
ECO
GEN 1
BK
83
ECO
GEN 2
OCOTILLO
BK
62
DU
IV 230kV Bus
DREW
230KV
DW
GEN 3
DW
GEN 2
DW
GEN 1
IVS
IV
PST
TL23067
TL23054
TL23055
BK
80
DW
GEN 4
CSolar
DW
GEN 5
BUE
GEN 1
BUE
• Existing RAS can trip the following generation:
– 1200 MW combined cycle (CLR2, TDM)
– 1070 MW solar (DW1, DW2, DW3, DW4, IV GEN 3, DU, ECO
GEN2)
– 550 MW wind (OCO, BUE1, ECO GEN)
– Total of 2820 MW
• DW GEN 5 will add 100 MW gen drop capability
14Confidential - For Internal Use Only
Gen Drop AdditionWistaria Ranch Solar (DREW GEN 5)
15Confidential - For Internal Use Only
Gen Drop AdditionWistaria Ranch Solar (DREW GEN 5)
DREW GEN 5 Substation
• (1) 230/34.5kV 115MVA transformer
• (3) 34.5kV feeders
• Sequential trip operates lockout relay
on 3-second delay
• All other RAS trips are instantaneous
16Confidential - For Internal Use Only
Gen Drop AdditionWistaria Ranch Solar (DREW GEN 5)
IV-A
COM
22COM32
S EL
COM6P2
COM5
P6
MIRRORED BITS
SEL PROTOCOLOCO
DREWCV DU
P2
P3 P3 P3
COM1
COM2
COM24
COM1COM2COM3 COM4 COM20
COM33
P3
SEL-3530 RTACS EL
ETH1
IV-B
COM
21COM10
COM7 P2
TL23045
TL23046
P2
P2
TL23066
TL23043
TL50006
Power Flow Monitoring
P2
ML
ECO-ARAS AND
GEN. DROP
CONTROL WIRING
ETH1
OU
T20
5
OU
T20
6
OU
T20
7
OU
T20
8
Tx: 2Rx: 1
Tx: 3Rx: 1
Tx: 1Rx: 4
Tx: 2Rx: 1
Tx: 2Rx: 4
Tx: 2Rx: 3
Tx: 2Rx: 1
Tx: 1Rx: 2
DNP3 – RS-232
COPPER ETHERNET
SEL-2032
S EL
P1
COM31
RTU
SEL-351
S EL
S EL
S EL
P2
COM9 TL23048
P2COM8 TL23047
S EL
S EL
S EL
S EL
S EL
COM
23
TL23061 P2
P2
TDM
IN1B
,IN
2B
IN1A
,IN
2A
IN1B
,IN
2B
IN1A
,IN
2A
CLR
RFL
9745
RFL
9745
SEL-3530 RTAC
SEL-351
SEL-351
SEL-351
SEL-351
SEL-351
SEL-351
SEL-351
17Confidential - For Internal Use Only
SEL-2506
Gen Drop AdditionWistaria Ranch Solar (DREW GEN 5)
MIRRORED BITS
CONTROL WIRING
P3 P3
P3
P3
351
DREW
P4
P4
DREW
GEN 1
DREW
GEN 2
DREW
GEN 4
DREW
GEN 3
INST INSTSEQ 1/3 2/3 SEQ 1/3 2/3SEL-351
S EL
P1 P1
TRIPS 34.5kV CBs via LOR
BACK UP TRIP to TL23067
INST TRIP
FROM IV
SEQ. TRIP
FROM IV
SEL-2506 SEL-2506
INST SEQ 1/3 2/3
P1
SEL-2506
P3
DREW
GEN 5
1/3 TRIP
FROM IV
2/3 TRIP
FROM IV
Questions?
Confidential - For Internal Use Only 18
Confidential - For Internal Use Only
19
OMEC RAS (INFO ONLY)EQUIPMENT MODIFICATION
TL23041
MIGUEL
SYCAMORE
CANYON
OTAY
MESA
BAY
BOULEVARD
TL23042
TL23070
PIO
PICO
CB #152b
CB#2 52b
SEL-2506
EXISTING FUTURECB #152b
CB#2 52b
Microwave
CONTROL WIRING
351
ML
351
SX