HPS_PM-SLD-1_REV_0C_11-07-21.pdf
PDF 250 KB Posted
- Attached to
- Engineering Services for Donnie Substation
- Solicitation number
- RFQ#202623
- Issued by
- Miami-Dade County, Florida
About this file
This is a single-line electrical diagram for the 138 kV Donnie Substation project in Homestead, Florida, prepared by United E&C, Inc. for the City of Homestead. The document illustrates the Protection and Metering design for a distribution substation featuring two 138-13.2 kV power transformers rated at 24/32/40 MVA with on-load tap changers (ONAN/ONAF/ONAF configuration), dual 13.2 kV operating buses, eight feeders with associated protection relays (SEL 351S units), transformer protection via SEL 387B and 387T differential relays, and tie-breaker functionality between the two operating buses. The design includes current transformers with multiple tap ratios ranging from 300-5A to 3000-5A, surge arresters rated 138 kV (108 kV duty cycle, 84 MCOV kV), motor-operated and manually-operated disconnect switches, and control transformers (1-phase, 7.6 kV/120-240V) for the control house. The diagram indicates optional mobile substation connection points and distinguishes between equipment to be provided by HPS (main transformer) and equipment to be provided by the EPC contractor. The drawing was issued for bid on June 17, 2021 (Revision 0B), with a subsequent draft revision issued on November 7, 2021 (Revision 0C) incorporating HPS comments, including deletion of the 79 function, modification of transformer CT ratios, and addition of neutral grounding reactor specifications based on engineering calculations.
No pricing information, contract terms, response deadlines, or procurement milestones are contained in this technical drawing document. The diagram serves as a design reference document supporting the City of Homestead's engineering design RFQ for the Donnie Substation project, establishing the electrical architecture and protection scheme requirements for qualified engineering consultants developing construction-ready specifications and documents.
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ENG
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CONT
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DESCRIPTION
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JOB NUMBER
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SCALE:
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DISCIPLINE
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REV
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DATE
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DRAWING NO.
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SH
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BY
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CHK
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DFTG
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REV
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APVD
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138 KV DONNIE SUBSTATION
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15970 SW 296TH ST, HOMESTEAD, FL
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ELECTRICAL
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PROTECTION & METERING
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SINGLE LINE DIAGRAM
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PM-SLD-1
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NO SCALE
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UNITED E&C PROJECT NO.:
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(609) 720-2000
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AutoCAD SHX Text 30 Knightsbridge Road., Suite 521ge Road., Suite 521e Road., Suite 521
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XXXX
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SW NORMALLY CLOSED
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138KV BUS #2
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TO DAVIS SUB
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LINE TO BE REROUTED IN & OUT
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TRANSMISSION LINE SUBSTATION
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TRIP COIL #1
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TRIP COIL #2
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CLOSE
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351T2 OUT106
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83AR CS
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89HCS C
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351T2 OUT101
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367B OUT102
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89HCS O
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2100 AR
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351T2 79 (RECLOSE)
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387T2 OUT102
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63 FP
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A/V/M/VAR M/T
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1PU
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3000-5A MR 3000-5A TAP
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3000-5A MR 3000-5A TAP
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3000-5A MR 3000-5A TAP
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63CS ON
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TRANSFORMER 2
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24/32/40 MVA
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SEE NOTE 2
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2000-5A MA 1200-5A TAP
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CLOSE
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89LCS C
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TRIP
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89LCS O
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387T2 87U/87R 51P/51N TX FB
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86T2 LOR
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351T2 OUT105
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367T2 OUT101
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TRIP RESET-MANUAL
AutoCAD SHX Text 351T2 63 51P/51N UNSUCCESSFUL 79 REMOTE TRIP LSC > 20kA
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TRIP
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FB #1
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FEEDER 1
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FB #2
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FEEDER 2
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SEL 351S
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SEL 351S
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MT #2
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387B 87U/87R & 50P/5ON FOR FB & 5OP/50N
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AUX
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CTS
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SEL 551 FB
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FB #6
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FEEDER 6
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FB #7
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FEEDER 7
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SEL 351S
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SEL 351S
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387T1 87U/87R 51P/51N TX FB
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387T1 OUT101
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TRIP
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PRIMARY &
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BACK-UP
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PRELIMINARY
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DAV
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TWH
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EBK
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FB #3
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FEEDER 3
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SEL 351S
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387T2 5ON
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1200-5A-MR 1200-5A TAP
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1200-5A-MR 1200-5A TAP
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NOTE 1
AutoCAD SHX Text NOTES: 1. 138kV SURGE ARRESTER, 108kV DUTY CYCLE 84 MCOV KV 138kV SURGE ARRESTER, 108kV DUTY CYCLE 84 MCOV KV 2. TRANSFORMERS 1 & 2 SHALL BE 138kV (650kV BIL)-13.2kV (110kV BIL) 24/32/40 TRANSFORMERS 1 & 2 SHALL BE 138kV (650kV BIL)-13.2kV (110kV BIL) 24/32/40 MVA@55° C Z=9% ONAN/ONAF/ONAF WITH OLTC3. 138kV MOTOR OPERATED SWITCHES SHALL BE CONTOLLED BY FPL. THE PROTECTION 138kV MOTOR OPERATED SWITCHES SHALL BE CONTOLLED BY FPL. THE PROTECTION SCHEME FOR 138kV BUS SHALL BE INCLUDED IN DAVIS AND LUCY SUBSTATION EXISTING PROTECTION SCHEMES. 4. METERING RATING AND RATION BY FPLMETERING RATING AND RATION BY FPL
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600-5A MR 300-5A TAP
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2000-5A MA 500-5A TAP
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TO LUCY SUB
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351T1 OUT105
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89HCS 0
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3878 OUT101
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89HCS C
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83AR CS
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2100 AR
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ENABLE
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63CS ON
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63 FP
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IPV
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2000-5A MR 2000-5A TAP
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AutoCAD SHX Text TRANSFORMER 1 138-13.2kV 24/32/40 MVA SEE NOTE 2
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1200-5A MA 800-5A TAP
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89LCS C
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89LCS 0
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MT #1
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2100 AR
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387B OUT104
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83AR
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CLOSE
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ENABLE
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TRANSMISSION LINE SUBSTATION
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TIE BREAKER
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MOBILE SUBSTATION CONNECTION POINT
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RESET-MANUAL
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FEEDER 8
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MOBILE SUBSTATION CONNECTION POINT
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METERING
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MEETERING
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SL&P TRANSFORMER #2
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1 PHASE
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TO CONTROL HOUSE
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SL&P TRANSFORMER #1
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TO CONTROL HOUSE
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CONCEPTUAL
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FOR BID
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%%ULEGEND:
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SURGE ARRESTER
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EQUIPMENT ASSEMBLED
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XXXXX
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RELAY
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GROUND
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POWER
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5. MAIN TRANSF BY HPS. OTHER EQUIP. BY EPC CONTRACTOR.
6. HPS PREFERENCE IS TO USE NEUTRAL GROUNDING REACTOR BASED IN ENG. CALC
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