Protection Packages. The existing protection package 'A' is directional comparison unblocking (“DCUB”) with a LPRO-4000 relay using programmable logic controller (“PLC”), and the 'B' package step distance with a SEL-311C using leased digital circuit. The existing relays and the reclosing relay (SEL-351-6) will be reused. To accommodate the interconnection of the Small Generating Facility, redundant DTT from Connecting Transmission Owner’s Long Lane Substation shall be added to ensure removal of the generation. The DTT 'A' package will us power line carrier which will require installation of an RFL GARD 8000 PLC carrier set. (Note: The Facilities Study for the Small Generating Facility assumed that the existing Line 6 trap tuning pack, Line 6 tuner and RFL 9780 will not require replacement. However, depending on the transmit and receive frequencies determined during final engineering, replacement may be required). The 'B' package will use a leased digital circuit which will require installation of an RFL GARD 8000 tele-protection set at the Albany 2 Collector Substation A new relay panel will be installed for the communications equipment. The A and B line relays will also perform breaker failure, DTT receive supervision and contact multiplication. DTT transmit to the Albany 2 Collector Substation will be added for a line relay operation, R6 breaker failure, and if R6 is opened. Additional channels available on the GARD 8000s shall be used for this protection scheme.
Protection Packages. DTT to the Skyline Solar Collector Substation is required to be installed at Yahnundasis Substation to prevent islanding. DTT will be sent for a line relay operation or for R240 breaker failure. Since the existing relaying on the Yahnundasis Line 24 does not include breaker failure, the existing electromechanical relays shall be removed and two (2) SEL 351-6 relays shall be installed. These relays will provide overcurrent and breaker failure protection. The “A” package will also provide automatic reclosing for the breaker. An RFL GARD 8000 and an on/off switch for the DTT scheme will be installed.
Protection Packages. F or the ‘A’ package, the existing electromechanical line protection will be replaced with a GE L90 line differential protection package. The existing electromechanical relay in t he ‘B’ package will be replaced with a SEL-311C and converted to a POTT scheme. Breaker failure protection will be included in the line relay, and a SEL-351-6 will be added for automatic reclosing. ‘A’ and ‘B’ package DTT receive for breaker failure at Middle Road Substation will be added requiring the addition of two SEL-351-6 relays. Telecommunications For the ‘A’ package, an IMUX 2000 with MA- 620 and MTS cards will be added for the line differential and DTT. For the ‘B’ package, an IMUX 2000 with MTS cards will be added for the POTT and DTT. An underground fiber will be run from the station control house to a new splice box that will be located on the Line 6 termination structure inside the Black River Substation. Lighthouse Hill Substation
Protection Packages. For the ‘A’ package, the existing SEL-321 distance relay will be reused, converted to a POTT scheme, and reset for the shorter line. The existing SEL 311C relay in the ‘B’ package will be reused and reset for the shorter line. DTT receive for breaker failure at Middle Road Substation will be added requiring the addition of an SEL-351-6 relay. Telecommunications Communication to Middle Road Substation will be via the existing fiber for the POTT and DTT schemes using new MTS cards in an RFL IMUX 2000. A new panel will be installed adjacent to the existing line relays to house the communication equipment and DTT relay. Therefore, ADSS cable will be extended from Structure 319 outside of the station to the control house. One (1) free-standing rack will need to be installed to terminate ADSS.
Protection Packages. The existing Line 16 ‘A’ and ‘B’ protection packages (SEL221-16 relays) and breaker control relays cannot accommodate the project and will be replaced. The ‘A’ package will be a POTT scheme consisting of an ERLPHase LPRO 4000 with a GARD8000 and the ‘B’ package will be a step distance scheme with an SEL-311C. DTT transmit and receive to the Rock District Solar Collector Substation will be added. A second GARD8000 will be installed for communication with the Rock District Solar Collector Substation. DTT will be sent to the Rock District Solar Collector Substation for a line relay operation and R16 breaker failure. DTT for breaker failure will be received from the Rock District Solar Collector Substation. An SEL-351-6 will be added for DTT receive supervision and will be used to trip and drive reclosing to lockout. The existing ACR reclosing relay will be replaced with SEL-351-6 relay to allow addition of DTL for DTT receive.
Protection Packages. The existing primary and backup electromechanical line relays for Line 73 shall be replaced with digital relays coinciding with the protection at the Xxxxxxxx Road Station. The ‘A’ package will consist of an ErlPhase LPRO relay configured for a DCUB scheme using RFL 9780 FSK PLC, and the ‘B’ package will be a SEL 311C relay configured for a POTT scheme using mirrored bits via RFL IMUX SONET equipment over microwave. Reverse looking elements in the ‘B’ package will also provide backup bus protection. Existing relay panels will be reused. Redundant single channel DTT receive schemes shall be added for breaker failure protection at the Xxxxxxxx Road Station using SEL-351-6 relays (breaker failure at Xxxxxxxx Road Station will trip Dunkirk breaker R1402). The existing AC Reclosing relay located on the line relay panels will be replaced with a SEL-351-6 relay to allow the drive to lockout functionality for DTT receive implementation.
Protection Packages. The existing primary and backup electromechanical line relays for Line 84 shall be replaced with digital relays coinciding with the protection at the Xxxxxxxx Road Station. The ‘A’ package will consist of an ErlPhase LPRO relay configured for a DCUB scheme using RFL 9780 FSK PLC, and the ‘B’ package will be a SEL 311C relay configured for a POTT scheme using mirrored bits via RFL IMUX SONET equipment over microwave. Reverse looking elements in the ‘B’ package will also provide backup bus protection. Existing relay panels will be reused for the ‘A’ package, however, one new panel is required for the ‘B’ package. Redundant single channel DTT receive schemes shall be added for breaker failure protection at the Xxxxxxxx Road Station using SEL-351-6 relays (breaker failure at Xxxxxxxx Road Station will trip New Gardenville breaker R863). The existing AC Reclosing relay located on the line relay panels will be replaced with a SEL-351-6 relay to allow the drive to lockout functionality for DTT receive implementation.
Protection Packages. The existing Line 15 protection is a POTT for the ‘A’ package and step distance for the ‘B’ package. The existing relays (SEL-311C and ERL Phase LPRO) will be reused and reset to accommodate the generation. DTT transmit and receive to the Xxxxx Solar Collector Station will SERVICE AGREEMENT NO. 2720 be added. DTT will be sent to the Xxxxx Solar Collector Station for a line relay operation and for R15 breaker failure. DTT for breaker failure will be received from the Xxxxx Solar Collector Station. The ‘A’ package line relay shall be used for DTT receive supervision and will be used to trip and drive reclosing to lockout. An on/off switch for the DTT scheme shall be installed and a GARD8000 will be added for DTT to and from the Xxxxx Solar Collector Station.
Protection Packages. The existing protection package 'A' is directional comparison unblocking (“DCUB”) with a LPRO-4000 relay using programmable logic controller (“PLC”), and the 'B' package step distance with a SEL-311C using leased digital circuit. The existing relays and the reclosing relay (SEL-351-6) will be reused. To accommodate the interconnection of the Small Generating Facility, redundant DTT from Connecting Transmission Owner’s Long Lane Substation shall be added to ensure removal of the generation. The DTT 'A' package will us power line carrier
Protection Packages. The existing Line 10 protection packages and breaker control relays at Rotterdam Substation cannot accommodate interconnection of the Small Generating Facility and shall be replaced. The existing line relays for Line 10 in panel 68 and reclosing relays on panel 16 will be removed, and the asbestos panels in control house 2 shall be replaced with sheet metal panels. The "A" package will be converted to a POTT scheme consisting of an ERL Phase LPRO 4000 and GARD 8000 using leased fiber. The “B” package protection shall be a step distance scheme consisting of SEL-311C. The new “A” and “B” relays along with 43PT and 43TT switches shall be installed in panel 12. The “A” and “B” Package line protection shall perform breaker failure protection. Sync check and reclosing (ACR) relays in panel 16 will be replaced with a SEL 351-6. The addition of “B” relaying to Line 10 shall require the spare CT to be wired into the relay. DTT will be sent to the Pattersonville Collector Substation for a line relay operation, R10 breaker failure and if R10 is open. DTT for breaker failure will be received from the Pattersonville Collector Substation. An SEL-351-6 will be added for DTT receive and will be used to trip and drive reclosing to lockout. The GARD 8000 installed for POTT has spare channels which will be used for DTT.
