digital transformer protection systems
TRANSCRIPT
Transformer Protection Systems
Digital TransformerProtection SystemsDigital TransformerProtection Systems
Transformer Protection Systems
Software derived phase shift, ratio correction and zero-sequence filtering to meet any winding type, CT connection and grounding
Programmable I/O, Logic, and elements to meet different applications
Full complement of backup protection functions
Metering, Through Fault Capability, Sequence of Events Recording
Remote/Local Communication Capability
Digital Transformer Protection Systems
Transformer Protection Systems
IPScom® Communications PC Software package for setpoint interrogation/modification, metering, monitoring, and downloading oscillograph records
IPSplot® Oscillographic Analysis Software package graphically displays, facilities analysis, and prints captured waveforms
Commissioning tools to speed factory acceptance testing and field start-up
Forensic engineering capabilities for rapid fault and event diagnostics
Interface and Analysis Software
Transformer Protection Systems
M-3310 -- Introduced in 1998Two Winding applications
M-3311 -- Introduced in 2002Adaptable to 2, 3 Winding Applications
M-3311A --- Introduced in 2007Adaptable to 2, 3 or 4 Winding ApplicationsThrough fault recorderTrip circuit monitoringSequence of events recorderEnhanced oscillography
Digital Transformer Protection Relays
Transformer Protection Systems
Digital Transformer Differential RelaysM-3310 / M-3311 / M-3311A
0/2/4*32/3/4 M3311A
0/1*22/3 M3311
0/3*12M3310Voltages # 87GD# WindingsModel
Expandable I/O adds: 12 Inputs and 8 Outputs *Optional I/O (M-3311A)
6 Self-wetted Inputs / 8 Programmable OutputsStandard I/O:
Transformer Protection Systems
M-3310 and M-3311
More Than Your Average Differential Relays
Transformer Protection Systems
M-3311A Two, Three or Four winding protection
Transformer Protection Systems
M-3311A Rear panel
Transformer Protection Systems
M-3311A-4W-2V234M-3311A-4W-0V034M-3311A-3W-4V423M-3311A-3W-2V223M-3311A-3W-0V023M-3311A-2W-4V412M-3311A-2W-2V212M-3311A-2W-0V012
ModelVoltages Gnd CT'sWindingsBeckwithApplication
M-3311A Application Configurations
Transformer Protection Systems
Unique features of Beckwith Transformer Protection Relays
Adaptive overexcitation restraint based on 5th harmonic
Multiple ground directional differential elements
Graphical display of uncompensated and compensatedphasors for each winding to help commissioningThrough fault monitoring to schedule early maintenance and prevent transformer failures
User friendly setting of transformer/CT connection configurations
Voltage inputs with overexcitation protection
Event recording with 512 events in addition to Target log
Transformer Protection Systems
Set the configuration
Select elements to set
Set elements
Define tripping and blocking assignments
Review/print summary
How do you set a relay?
Transformer Protection Systems
M-3311 - 3 Winding
Transformer Protection Systems
Challenge: To be able to handle ANY combination of transformer winding arrangements and CT connection arrangementsHow it is accomplished: Use a menu that contains EVERYpossible combination
- Set W1’s transformer configuration and CT configuration- Set W2’s transformer configuration and CT configuration- Set W3 transformer configuration and CT configuration
Relay selects the proper currents to use, directly or through vector subtractionRelay applies factors if required √ 3Relay applies zero sequence filter if required
- Standard or Custom selectionStandard handles most arrangements, including all ANSI standard typeCustom allows any possible connections to beaccommodated
M-3311 Application Adaptation
Transformer Protection Systems
IPScom M-3311 Example: Relay Configuration
Standard
Transformer Protection Systems
W1 = Delta AC at zero degrees (reference), y CTsW2 = Wye at –150 degrees, y CTsW3 = Wye at –330 degrees, y CTs“IEC,” Dy5y11,
ACy
A
BC
A
B
C
Yy
A
B
C
Yy
W1
W2 W3
M-3311 Application Adaptation
Transformer Protection Systems
M-3311 Application AdaptationDy5 Dy11
Transformer Protection Systems
Pick off the menu and you are done!
Ability to create custom adaptations also
M-3311 Application Adaptation
Transformer Protection Systems
IPScom Example: Relay Configuration
Custom
Transformer Protection Systems
M-3311 Custom Connections
Zero sequence currents could appear in this input to relay butin no other, causing possible false trip during an external fault.
i
1
9
I
i
IEC ReferenceD y1y 9
Beckwith reference: Dab/wye/wye
Winding #1 #2 #3
Winding Type Dab y1 y9
Dab - CT
a
cb
Line Current ∠º 330º 0º 240º
CCW rotation 330º 0º 240º
Relay CT Setting 0 23 0
Magnitude Comp. no yes noCT Degree 0º 330º 0º
Combined Comp. 1∠0º 1 √3∠330º 1∠0º
CT Compensation
Winding Compensation
Relay Phase Setting 11 0 8
CT Type Y Dab Y
Zero Sequence EliminationZero sequence filter enabled x
AB
C bc
a
c
b
a
Transformer Protection Systems
M3311 Custom Table Selection
Transformer Protection Systems
IPScom Example: Relay Configuration
Custom
Transformer Protection Systems
Ground Fault
Transformer Protection Systems
M-3311A - 4 Winding
51W1
50W1
46W3
50BFW3
50W3
51W3
59G
3-CT
3-CT
M-3311A
This function is available as astandard protective function.
This function is available in theOptional Single-Phase VoltageProtection Package.
M-3311A TypicalConnection DiagramFour Winding Model
B
1-CT
R
87GDW2
50NBFW2
51NW2
87H
Winding 1(W1)
Winding 2(W2) Winding 3
(W3)50GW2
51GW2
C
87T
1
46W2
50BFW2
50W2
51W2
1
50GW3
51GW3
87GDW3
50NBFW3
51NW3
R
1
1
1
3-CT
1-CT
50NBFW1
51NW1
50BFW1
49W1
49W2
49W3
50NW2
50NW1
50NW3
Targets(Optional)
Integral HMI(Optional)
Metering
Sequence OfEvents
Waveform Capture
IRIG-B
Front RS232Communication
Multiple SettingGroups
Programmable I/O
Self Diagnostics
Dual Power Supply(Optional)
*
*
*
Rear RS-232/485Communication
ProgrammableLogic
A
RJ45 Ethernet(Optional)
52 52
51W4
50W4
1
50NBFW4
51NW4
50BFW4
49W4
50NW4
*
3-CT
Winding 4(W4)
VT 2 1-VT 2
81O/U
2724
VX V0
Transformer Protection Systems
M-3311A - 4 Winding
51Sum
50Sum
46W3
50BFW3
50W3
51W3
59G
3-CT
3-CT
M-3311A
This function is available as astandard protective function.
This function is available in theOptional Single-Phase VoltageProtection Package.
M-3311A TypicalConnection DiagramFour Winding Model
B
1-CT
R
87GDW2
50NBFW2
51NW2
87H
Winding 1(W1)
Winding 2(W2) Winding 3
(W3)50GW2
51GW2
C
87T
1
46W2
50BFW2
50W2
51W2
1
50GW3
51GW3
87GDW3
50NBFW3
51NW3
R
1
1
1
3-CT
1-CT
50NBF
Sum
51NSum
50BFSum
49Sum
49W2
49W3
50NW2
50NW1
50NW3
Targets(Optional)
Integral HMI(Optional)
Metering
Sequence OfEvents
Waveform Capture
IRIG-B
Front RS232Communication
Multiple SettingGroups
Programmable I/O
Self Diagnostics
Dual Power Supply(Optional)
*
*
*
Rear RS-232/485Communication
ProgrammableLogic
A
RJ45 Ethernet(Optional)
52 523-CT
Winding 4(W4)
VT 2 1-VT 2
81O/U
2724Σ
* Two sets of summed winding cuurentscan be enabled at a time.
VXVo
Transformer Protection Systems
M-3311A IPScom Example: Relay Configuration
Current Summing
4 Windings
Transformer Protection Systems
M-3311A Current Summing Application
Transformer Protection Systems
Setting Current Summing Selection
Select W2 & W3
Transformer Protection Systems
51 Function Current Summing Selection
Transformer Protection Systems
87GD Function Current Summing Selection
Transformer Protection Systems
IPScom Example: Element Selection
Transformer Protection Systems
IPScom Example: Element Setting
Blocking InputsOutputs
Transformer Protection Systems
Trip Characteristic – 87T
0.5
1.0
1.5
2.0
0.5 1.0 1.5 2.0
87T Pick Up
87T Pick Upwith 5th Harmonic Restraint
Slope 1
Slope 2
Slope 2Breakpoint
TRIP
RESTRAIN
Transformer Protection Systems
M-3311 Programmable Logic
Transformer Protection Systems
M-3311 Programmable Logic
Transformer Protection Systems
IPScom Example: I/O Assignment
Transformer Protection Systems
IPScom Example: Settings Summary
Transformer Protection Systems
Available in primary and secondary values
Metering
Transformer Protection Systems
Metering II
Transformer Protection Systems
Function Status
Transformer Protection Systems
Sequence of Events Recorder (total 512 Events are stored)
Transformer Protection Systems
Through Fault Recorder
• In addition to the Event Recorder, the M3311A also has a separate Through Fault Recorder
• Each through fault record contains the serial number of the fault, duration of the event, maximum RMS fault current magnitude for each phase, I2 t and time stamp.
• It will also store the total number of through faults
Transformer Protection Systems
Through Fault Recorder
Transformer Protection Systems
Breaker Monitor
Transformer Protection Systems
A very useful commissioning tool for viewing selected vectorsTwo Types- Differential
Displays uncompensated currents- You can see the phase shift and relative
magnitudesDisplays compensated currents
- If they are equal in magnitude, and W2 and W3 are 180 degrees out from W1, the field wiring and relay settings are in agreement
- All Currents and VoltagesDisplays all values
Vector Displays
Transformer Protection Systems
Vector Display 87: M-3311W1, Phase A at 0 degrees
W2, Phase A at 0 degrees (180)W3, Phase A at 180 Degrees
W1, Phase A at 0 degreesW2, Phase A at 0 degrees (180)
W3, Phase A at 180 degrees
Transformer Protection Systems
Waveform Capture
Transformer Protection Systems
Front Panel- RS-232 for PC Interface
Rear Panel- RS-232 for Control System, SCADA or Modem
Interface- RS-485 for Control System and SCADA Interface- Optional Ethernet (M-3311A only)
Protocols- M-3310: MODBUS- M-3311: MODBUS and DNP- M-3311A: MODBUS, DNP, MODBUS over TCP/IP
DNP over TCP/IP and IEC 61850 is under development
Communications Flexibility
Transformer Protection Systems
RS-232 Communication
Transformer Protection Systems
RS-485 Communication
Transformer Protection Systems
Fiber Optic Communication
©2008 Beckwith Electric Co., Inc.