Marble River
Relay Settings Basis
For The
MARBLE RIVER WIND PROJECT
May 21, 2012
Prepared For
MARBLE RIVER, LLC
Revision
0
1
2
Date
3/29/12
4/16/12
5/21/12
By
JK
JK
JK
Approved By
LAM
RJ
JK
Marble River Settings Basis
1. INTRODUCTION
The Marble River collector substation is being constructed for the Horizon Wind Energy
Marble River Wind Farm which consists of 73 wind turbine generators (WTGs) each with a
nominal rating of 3.0MW for a total generation capacity of 219MW. TRC is providing
protective relay settings for the collector substation. Guidance for the protective relay
settings, substation control and automation, as well as arc flash studies are provided by
POWER Engineers, Inc. This document provides the criteria used by TRC to complete the
relay settings.
Figure 1: System Overview Diagram
05/21/12
Rev. 2
Marble River Settings Basis
2.
CRITICAL NOTES AND ASSUMPTIONS
2.1
POWER Engineers supplied a settings guide, Marble River Protective Relaying
Functional Descriptions Revision 0, which was used where applicable in the
completion of the collection system relay settings. This document is located in the
Appendix for reference.
2.2
All impedance and short circuit contribution information in the supplied short circuit
model used for calculating relay settings is based on Horizon/EDPR information supplied
to the date of this document. All calculations for the system short circuit model are
located in the Appendix for reference.
2.3
Proper coordination of protective devices may not have been achieved to be able to
protect collector substation equipment. These instances are documented in the settings
calculations.
2.4
All protective equipment for T2 and the 230kV system are located in the point of
interconnection station operated by NYPA, Patnode Substation, and are excluded from
this document. Overcurrent protection is provided by the following relays to the 34.5kV
collector substation: 87TBP/T2, 87TP/T2 & 87TS/T2.
2.5
Capacitor Banks C1-C3 have been removed from the design of the collector substation
and therefore no documentation of protective devices is provided.
3.
PROTECTION OVERVIEW
3.1
The following table lists the protective devices covered by this document. The name,
model, brief description, and protective functions are provided. Refer to relay
calculations section for more detailed information.
Relay
50/62BF/T2MR
Relay Type
SEL-351S
Relay Description
34.5kV Main Breaker Failure
Protective
Elements
50FD
Element Function
Breaker failure fault
detector
05/21/12
Rev. 2
Marble River Settings Basis
87B/34.5
SEL-587Z
34.5kV Bus Differential
62BF
Breaker failure timer
27
230kV UV Trip
87
High impedance bus
differential
50/51/F1-F8
SEL351S
Collector Overcurrent
50FD
Breaker failure fault
detector
62BF
Breaker failure timer
59
Over voltage
81U/O
U/O Frequency
67P
Phase DTOC
51P
Phase TOC
51G
Gnd TOC
50P
Phase IOC
50G
Gnd IOC
51G-2
Gnd high set TOC
50GDT
Gnd Definite TOC
Table 1: Protective Device Overview
3.2
The following table lists the lock out relays covered by this document. The name and
description of operation are provided.
Lockout Relay
86BF/T2MR
Function
T2MR Breaker
Tripped By
Trips
50/62BF/T2MR
Failure Lockout
05/21/12
Blocks
F1
F1
F2
F2
F3
F3
F4
F4
F5
F5
F6
F6
F7
F7
F8
F8
2102-TC1
2102-TC1
2102-TC2
2102-TC2
2114-TC1
2114-TC1
2114-TC2
2114-TC2
Comments
Rev. 2
Marble River Settings Basis
86B/34.5
34.5kV Bus
87B/34.5
F1
F1
Trip by feeder
Differential
50/51/F1
F2
F2
breaker is for BF
Lockout
50/51/F2
F3
F3
function only.
50/51/F3
F4
F4
50/51/F4
F5
F5
50/51/F5
F6
F6
50/51/F6
F7
F7
50/51/F7
F8
F8
50/51/F8
T2MR
T2MR
SHORT 587Z
Table 2: Lock Out Relay Overview
3.3
The following table summarizes the primary and backup protection elements by zone of
protection.
Zone of
Protection
34.5kV Bus
Primary Protection
Back Up Protection
Relay
Relay
Trips
(Element)
87B/34.5
86B/34.5
(87)
(Element)
87TBP/T2
Trips
86TBP/T2
(51H)
Comments
All back up equipment is
located in NYPA Patnode
Control Building.
87TP/T2
86TP/T2
(51H, 51L,
Back up protection lock out
51LN)
relay will isolate T2.
87TS/T2
86TS/T2
(51H, 51L,
51LN,
51N)
F1
50/51F1
F1
87TP/T2
86TP/T2
(67P, 51P,
(51L,
located in NYPA Patnode
51G, 50P,
51LN)
Control Building.
50G, 51G2, 50GDT)
05/21/12
All back up equipment is
Back up protection lock out
87TS/T2
86TS/T2
relay will isolate T2.
Rev. 2
