digitaltransformerprotectionsystemsetuprev-080710-160323224806.pdf

Transfor ransformer mer Prot Prote ecti ction on Syst yste ems

Dig igit al Tra rans nsfo r me mer r i gita giita tal ran n sfor sffor orme Pro rote tect ctio ion n Sys yste tems ms


Dig igit ita al Transf Transfor ormer mer Pro rotecti tection on Sys Systems tems 

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Software derived phase shift, ratio correction and zerosequence 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, Metering, Through Through Fault Fault Capability, Capability, Sequenc Sequence e of Events Recording Remote/Local Communication Capability


Dig igit ita al Transf Transfor ormer mer Pro rotecti tection on Sys Systems tems 

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



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Software derived phase shift, ratio correction and zerosequence 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, Metering, Through Through Fault Fault Capability, Capability, Sequenc Sequence e of Events Recording Remote/Local Communication Capability


Int nte erf rfa ace and and An Ana aly lysi sis s Software Soft ware 

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IPScom IPScom® ® Commun Communica icatio tions ns PC Softw Software are packa package ge for setpoint interrogation/modification, metering, monitoring, and downloading oscillograph records IPSp IPSplo lot® t® Os Osci cillo llogr grap aphi hic c Ana Analy lysi sis s Sof Softw twar are e pac packa kage ge 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


Dig igit ita al Trans Transfo form rme er Protection Protecti on Relays 

M-3310 -- Introduce ntrod uced d in 199 1998 

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M-3311 -- Introduce ntrod uced d in 200 2002 

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Two Winding applications

Adaptable to 2, 3 Winding Winding Applications

M-3311A ----- Introdu Intro duced ced in i n 2007 

Adaptable to 2, 3 or 4 Winding Applications Applications

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Through fault recorder

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Trip circuit monitoring

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Sequence of events recorder

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Enhanced oscillography


Dig igit ita al Transf ransfor ormer mer Diffe Diff erenti rentia al Relays 

M-3310 / M-3311 / M-3311A Model

# Winding ind ings s

# 87GD

Voltages

M3310

2

1

0/3*

M3311

2/3

2

0/1*

M3311A

2/3/4

3

0/2/4*

Standard Standar d I/O: I/O: 6 Self Self-wetted -wetted Inp Input uts s / 8 Progr ammable Out Outpu puts ts *Optional I/O (M-3311A) Expandable I/O I/O adds: 12 Input s and 8 Out Outpu puts ts

Transformer Protection Systems

M-3310 and M-3311

More Than Your Average Differential Relays


M-3311A Two, Three or Four winding protection


M-3311A Rear panel


M-3311A Application Configurations Application

Beckwith

Windings

Gnd CT's

Voltages

Model

2

1

0

M-3311A-2W-0V

2

1

2

M-3311A-2W-2V

2

1

4

M-3311A-2W-4V

3

2

0

M-3311A-3W-0V

3

2

2

M-3311A-3W-2V

3

2

4

M-3311A-3W-4V

4

3

0

M-3311A-4W-0V

4

3

2

M-3311A-4W-2V


Unique features of Beckwith Transformer Protection Relays 

Adaptive overexcitation restraint based on 5th harmonic

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Multiple ground directional differential elements

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Graphical display of un compensated and compensated phasors for each winding to help commissioning

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Through fault monitoring to sch edule early maintenance and prevent transformer failures

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User friendly setting of transformer/CT connection co nfigurations

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Voltage inputs with overexcitation protection

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Event record ing w ith 512 events in addition to Target log


How do you set a relay? 

Set the configuration

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Select elements to set

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Set elements

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Define tripping and blocking assignments

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Review/print summary


M-3311 - 3 Winding


M-3311 Application Adaptation 

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Challenge: To be able to handle ANY combination of transformer winding arrangements and CT connection arrangements How it is accomplished: Use a menu that contains EVERY possible 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 subtraction Relay applies factors if required √ 3 Relay applies zero sequence filter if required 

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- Standard or Custom selection Standard handles most arrangements, including all ANSI standard type Custom allows any possible connections to be accommodated 

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IPScom M-3311 Example: Relay Configuration

Standard


M-3311 Application Adaptation A

ACy C

B

W1

W2

A

C B

W3

B

Yy A

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W1 = Delta AC at zero d egrees (referenc e), y CTs

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W2 = Wye at –150 degr ees, y CTs

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W3 = Wye at –330 degr ees, y CTs

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“ IEC,” Dy5y11,

C

Yy


M-3311 Application Adaptation Dy5 Dy11


M-3311 Application Adaptation

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Pick off the menu and y ou are done! Ability to create custom adapt ations also


IPScom Example: Relay Configuration

Custom


M-3311 Custom Connections I

IEC Reference D y1y 9

9

i

Beckwith reference: Dab/wye/wye

1

a

A

i

b

B C

Winding

#1

c

b a

#2

c

#3

Winding Compensation

Line Current ∠º

330º

0º

240º

Winding Type

Dab

y1

y9

CCW rotation

330º

0º

240º

11

0

8

Relay Phase Setting

Dab - CT

CT Compensation

CT Type

Y

CT Degree Magnitude Comp. Combined Comp. Relay CT Setting

Dab

Y

0º no

330º yes

0º no

1∠0º 0

1 √3∠330º 23

1∠0º 0

Zero Sequence Elimination Zero sequence filter enabled Zero sequence currents could appear in this input to relay but in no other, causing possible false trip during an external fault.

x

a b c


M3311 Custom Table Selection


IPScom Example: Relay Configuration

Custom


Ground Fault


M-3311A IPScom Example: Relay Configuration

Current Summing

4 Windings


M-3311A Current Summing Application


Setting Current Summing Selection

Select W2 & W3


51 Function Current Summing Selection


87GD Function Current Summing Selection


IPScom Example: Element Selection


IPScom Example: Element Setting Blocking Inputs Outputs


Trip Characteristic – 87T 2.0

1.5

1.0

TRIP 87T Pick Up with 5th Harmonic Restraint

Slope 2

87T Pick Up RESTRAIN 0.5

Slope 2 Breakpoint Slope 1 0.5

1.0

1.5

2.0


M-3311 Programmable Logic


M-3311 Programmable Logic


IPScom Example: I/O Assignment


IPScom Example: Settings Summary


Metering

Available in primary and secondary values


Metering II


Function Status

Transformer Protection Systems Sequence of Events Recorder (total 512 Events are stored)


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


Through Fault Recorder


Breaker Monitor


Vector Displays 

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A very useful commissioning selected vectors

tool

for

viewing

Two Types - Differential Displays uncompensated currents - You can see the phase shift and relative magnitudes Displays 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 

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- All Currents and Voltages Displays all values 


Vector Display 87: M-3311 W1, Phase A at 0 degrees W2, Phase A at 0 degrees (180) W3, Phase A at 180 Degrees

W1, Phase A at 0 degrees W2, Phase A at 0 degrees (180) W3, Phase A at 180 degrees


Waveform Capture


Communications Flexibility 

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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


RS-232 Communication


RS-485 Communication

digitaltransformerprotectionsystemsetuprev-080710-160323224806.pdf

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