1

Industrial Systems

Digital Line Protection SystemDigital Line Protection System

Microprocessor Based Protection, Control and Monitoring System

Waveform Sampling Proven Protection Economical Ease of Retrofit

2

Industrial Systems

DLP-D EnhancementsDLP-D Enhancements

MODEL DLP3512CDHRatings:In 5 AMPSVn 120 VacFreq 60 HzGEK 99300

GREEN: PROTECTION ONRED: CHECK STATUSg Digital Line Protection

GE PROTECTION AND CONTROLMalvern, PA

COMM

TRIP AC Z1 50

01Power

ON

OFF

SET1/Y 2 3/N CLR

INF 4 5 6

ACT 7 8 9

ENDPRT 0 ENT.

ASCII SUBSET

Three Phase& Single Phase

Tripping

Continuous MonitorAlarm 2 Shot Recloser

Optional

DLP-CRepackaged

UnbalanceAlarm

Detection

New Packaging3 RU High

Horizontal or Vertical

SCADAInvolved Phases

IndicationStandard

Carrier StartOptions

ProvenDesign

3

Industrial Systems

Overview of DLP OperationOverview of DLP Operation

Multiple Microprocessors (3)

Sampling Rate = 16/Cycle

ANALOGTO

DIGITALCONVERTER

SETTINGSMMI

PHASORQUANTITIES

EMULATION OF: PHASE ANGLE COMPARATORS, AMPLITUDE COMPARATORS, ETC.

MicroP’s&

EPROMS

RECURSIVEFOURIER

TRANSFORM

MEASURINGFUNCTIONS

LOGIC

DISPLAY

RS232

OUTPUTS

I

V

4

Industrial Systems

DLP ApplicationDLP Application

For Three Phase or Single Phase Tripping on any Uncompensated Transmission Line

Typical Operating Times are 3/4 to 1-1/2 Cycle

6 Protection Schemes– Step Distance

– Directional Comparison Blocking

– POTT

– PUTT

– Hybrid

– Zone 1 Extension

G

5

Industrial Systems

DLP Operating TimesDLP Operating Times

SCR Tripping Times PT Potential Source

0.01 0.1 1 10

IZ-V(Per Unit Volts)

Mill

isec

on

ds

10

20

30

40

50

Minimum

Maximum

6

Industrial Systems

DLP Operating TimesDLP Operating Times

SCR Tripping Times CVT Potential Source

0.01 0.1 1 10

IZ-V(Per Unit Volts)

Mill

isec

on

ds

10

20

30

40

50

Maximum

Minimum

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Industrial Systems

Settings:Settings:

Scheme Selection– STEP

– POTT

– PUTT

– HYBRID

– BLOCKING (BLK1, BLK2, BLK3)

– ZONE 1 EXTENSION

Zone 2 Ground Measuring Unit Selection

– Distance

– Directional Overcurrent

– Distance + Directional O/C

8

Industrial Systems

Measuring FunctionsMeasuring Functions

DISTANCEDISTANCE

Phase Ground

Zone 1 MHO MHO-or-REACTANCE

Zone 2 MHO MHO

(Pilot Zone)

Zone 3 MHO MHO

Zone 4 MHO* MHO

(Reversible/Blocking)

*Settable Offset

9

Industrial Systems

Measuring FunctionsMeasuring Functions

OVERCURRENTOVERCURRENT

(3|I0| - KT|I1|) IPT - Pilot Trip

(3|I0| - KB|I1|) IPB - Pilot Block

IT - Trip Supervision

IB - Block Supervision

FD - Fault Detector

(3|I0| - KD|I1|) IDT - Inst. Direct Trip (Directional Control)

(3|I0|) GTOC - Time Overcurrent (Directional Control)

DIRECTIONALDIRECTIONAL

NT - Trip

NB - Block

10

Industrial Systems

Ground TOC CurvesGround TOC Curves

?

Custom Ground TOC Curves From Several Sources

– Curves generated by GE’s TOC curve editor

– Any curve from GE’s TOC curve database

– The Existing Library of ASPEN RelayEditorTM curves

– Any custom curve designed with ASPEN RelayEditorTM

Inverse

Custom

ExtremelyInverse

Definite Time

Very Inverse

11

Industrial Systems

Additional Protective Relay FeaturesAdditional Protective Relay Features

Out-of-Step Blocking PT Fuse Failure Line Pickup (Close Into Fault) Remote Open Detector Line Overload Adaptive Reach

(Zone 1 Ground Reactance - Supervising MHO) Current Unbalance Alarm Continuous Monitor Alarm Detects Internal Relay Changes if

FD is Not Picked Up Carrier Start Options for Improved Coordination in Blocking

Schemes with Other Relays. Trip Bus Check when Settings are Changed

12

Industrial Systems

RecloserRecloser (Optional) (Optional)

Single breaker reclosing Programmable up to 2 reclose attempts Manual Lockout Panel Switch Additional Inputs

– Reclose Initiate, Reclose Inhibit, Reclose Cancel, Reclose Reset

Additional Outputs– Zone 1 Reach Reset, Lockout Alarm, Reclose in Progress

13

Industrial Systems

Inputs - Single Phase ModelsInputs - Single Phase Models

IA, IB, IC

VAG, VBG, VCG

RI-1P

RI-3P

Receiver 1 Output Contact

Receiver 2 Output Contact*

Stop Carrier*

Block Pilot Tripping*

(3) 52/b Contacts (w/ Recloser)

(3) 52/b Contacts (w/o Recloser)

Reclose Inhibit

Reclose Cancel

Reclose Reset

3 Pole Trip Enable

* Configurable Inputs

14

Industrial Systems

Inputs - Three Phase ModelsInputs - Three Phase Models

IA, IB, IC

VAG, VBG, VCG

(6) Digital Inputs (Contact Converters)

(2) 52/b Contacts

Receiver 1 Output Contact

Receiver 2 Output Contact*

Stop Carrier*

Block Pilot Tripping*

RI**

Reclose Inhibit**

Reclose Cancel**

Reclose Reset**

* Configurable Inputs

** Inputs for Recloser

15

Industrial Systems

Configurable InputsConfigurable Inputs

(1701)

CONCCI CC4 CC5 CC6

0 RECEIVER 2 SELECT GROUP BIT 1 SELECT GROUP BIT 0

1 EXTERNAL TRIGGER SELECT GROUP BIT 1 SELECT GROUP BIT 0

2 CONFIG. INPUT 1 SELECT GROUP BIT 1 SELECT GROUP BIT 0

3 RECEIVER 2 STOP CARRIER BLOCK PILOT TRIP

4 EXTERNAL TRIGGER STOP CARRIER BLOCK PILOT TRIP

5 CONFIG. INPUT 1 STOP CARRIER BLOCK PILOT TRIP

6 RECEIVER 2 CONFIG. INPUT 2 CONFIG. INPUT 3

7 EXTERNAL TRIGGER CONFIG. INPUT 2 CONFIG. INPUT 3

8 CONFIG. INPUT 1 CONFIG. INPUT 2 CONFIG. INPUT 3

USERINPUT

DEFAULT

SELECTSETTINGS

GROUP

16

Industrial Systems

Configurable Inputs / Adaptive SettingsConfigurable Inputs / Adaptive Settings

SettingsCC5 CC6 Group

0 0 G1 0 1 G2 1 0 G3 1 1 G4

SETTINGS GROUP

G1

G2

G3

G4

SETTINGS GROUP SWITCH 16SB1______

CONTACT NUMBER G4 G3 G2 G1

1 X X 2 3 X X4

1 2

3 4

CC5 (bit 1)+-

SG1

CC6 (bit 0)+-

SG3

17

Industrial Systems

Outputs - Single Phase ModelsOutputs - Single Phase Models

DEDICATED

Trip (SCR or Contact, 2 per phase)..... 6

BFI (2 per phase)................................... 6

RI-1P...................................................... 2

Transmitter Key.................................... 2

Zone 1 Extension Reset....................... 1

3 Pole Trip Enable................................ 1

Reclose in Progress............................. 1

Alarm (Pwr Supply/Critical)................. 1

SCADA.................................................. 5

CONFIGURABLE

RI-3P (Configurable as pair)................ 2

BKR Close

(Independent - Except Reclosing)...... 2

Line Overload....................................... 1

Non-Critical Alarm................................ 1

Reclose Cancel..................................... 1

18

Industrial Systems

Outputs - Three Phase ModelsOutputs - Three Phase Models

DEDICATED

Trip (SCR or Contact)........................... 2

BFI.......................................................... 2

Transmitter Key.................................... 2

Alarm (Pwr Supply/Critical)................. 1

SCADA................................................... 5

Reclose in Progress

(recloser models only)......................... 1

Lockout Alarm & Reach Reset

(recloser models only)......................... 2

CONFIGURABLE

RI............................................................ 2

BKR Close (Independent).................... 2

Line Overload....................................... 1

Non-Critical Alarm................................ 1

Reclose Cancel..................................... 1

19

Industrial Systems

Configurable OutputsConfigurable Outputs

EXAMPLE:

Configure the BC-1 Output to Close when Zone 1 BG, GRD DIR TRIP, and CONF. INPUT 1 are “ON” and CONF. INPUT 3 is “OFF”.

(1801) CONOUT 1 = 2 (AND gate)

(1802) CO1 IN1 = 2 (Z1BG)

(1803) CO1 IN2 = 35 (GRD DIR TRIP)

(1804) CO1 IN3 = 50 (CONF. INPUT 1)

(1805) CO1 IN4 = 152 (“NOT” of CONF. INPUT 3)

(1806) CO1 IN5 = 0

. .

. .

(1809) CO1 IN8 = 0

20

Industrial Systems

SCADA Digital to Analog InterfaceSCADA Digital to Analog Interface

Provides Analog Output Proportional to Distance to Fault Location in 0 to 1mA DC or 0 to 5 Vdc Output (Selectable)

Four (4) Contact Outputs Provide Fault TypeExample:

A

B

C

G

Phase A toNeutral Fault

Indication

21

Industrial Systems

Target (Current Actuated) Fault Location

– Algorithm = Lumped Parameter Differential Equation Solution

– Uses Phasor Quantities (Output of Fourier Algorithm) as Inputs

– Eliminates the Effect of Fault Resistance

TRIP AB Z1 44

22

Industrial Systems

Present Value ReportingPresent Value Reporting

Voltages

Watts

Phase Angles

Currents

Vars

Breaker Status

Automatically Displayed and UpdatedIn Four Second Intervals on LED Display

23

Industrial Systems

CommunicationsCommunications

Local MMI (Standard)– 2 Level Password Protection

» MASTER

» SETTINGS

– 16 LED Alphanumeric Display

– Keypad with 20 Keys

– Separate Function Keys for

» Settings

» Action

» Information

– Alarms

– Status LED

24

Industrial Systems

CommunicationsCommunications

Remote Access– Via RS232 & “DLP-LINK”

Software

– Front and Rear RS232 Ports

– 3 Level Password Protection

Access to:– Present Values

– Fault Report

– Sequence of Events

– Oscillography

– Manual Breaker Control

– Relay Settings

Local Functions Setup Help

[ - ] DLP COMMUNICATIONS 2.80

Logout Change access level Hang up phone

Actions . . . Information . . . Settings . . .

Relay Functions

Login

Phone disconnected

25

Industrial Systems

Remote Access - Rear ASCII PortRemote Access - Rear ASCII Port

ASCII PORT HELP SCREEN

STATION: MALVERNLINE: LINE 1UNIT ID: 0

DATE: 08/24/96TIME: 10:57:51

STATUS - Request DLP StatusVALUES - Request Present ValuesMODEL - Request PROM and MODEL numbersEVENTS - Request event reportSHOWSET - Request setting group informationSTLINID - Request station and line IDFAULT - Request fault report FSTATUS - Request status of all faultsLOGIN - Login requestLOGOUT - Logout request

STATION: MALVERNLINE: LINE 1UNIT ID: 0

DATE: 08/24/96TIME: 10:57:51

MODEL NUMBER: DLP3512CDH PROM VERSION NUMBER: V002.320B

INFORMATION ONLY

26

Industrial Systems

Fault ReportFault Report

Prefault– Currents

– Voltages

Post Fault– Currents

– Voltages

– Trip Targets

– Operating Time

Selected Events

Sample DLP 5512

FAULT REPORT

Station ID: PLACE TRANSMISSION

Line ID: CREEK 115KV OCB 5512

TRIP DATE: 09/11/95 TRIP TIME: 15:16:10.295

FAULT TYPE: AB DISTANCE: **** MILES TRIP TYPE: Z4 OPERATING TIME: 01496

PREFAULT FAULT Ia: 038.40 A Ia: 057.60 A Ib: 028.80 A Ib: 048.00 A Ic: 057.60 A Ic: 050.40 A In: 007.20 A In: 014.40 A

Va: 066.0 KV Vb: 066.0 KV Vc: 066.1 KV

15:16:10.295 TRIP SIGNALS ON15:16:12.119 TRIP SIGNALS RESET

15:16:12.119 TRIP CIRCUIT #1 NOT ENERGIZED

27

Industrial Systems

Present ValuesPresent Values

Currents Voltages Angles Watts Vars Breaker Status Carrier Status Active Setting Group

Sample DLP 5072

PRESENT VALUES

Station ID: CREEK TRANSMISSIONLine ID: 115KV OCB

09/18/95 14:23:44.455

IA: 001.16 A -001 DEGS VA: 066.3 V 000 DEGS IB: 001.26 A 119 DEGS VB: 066.3 V 121 DEGS IC: 001.26 A -119 DEGS VC: 066.3 V -119 DEGS

IN: 000.03 A **** DEGS

WATTS: 056.6 MW VARS: 003.1 MVAR

BREAKER 1: CLOSED BREAKER 2: N/A

PLC #1 SIGNAL: OFF PLC #2 SIGNAL: OFF PLC #1 STATUS: N/A PLC #2 STATUS: N/A

STOP CARRIER: OFF SETTING GROUP NUMBER: 1 BLOCK PILOT TRIP: OFF

28

Industrial Systems

Sequence of EventsSequence of Events

Operational Events– Setting Changes

– Fault Data

– Status

Diagnostic Self-Test Events– Warning (Non-Critical Alarm)

– Failure (Critical Alarm)

Time Tagged to 1ms Resolution

Last 100 Events Stored

Sample DLP 5072

EventsStation ID: CREEK TRANSMISSION

Line ID: 115KV OCB

07/25/95 19:06:21.121 TRIP SIGNALS RESET07/25/95 19:06:21.121 TRIP CIRCUIT #1 NOT ENERGIZED

07/25/95 19:06:21.048 TRIP SIGNALS ON07/25/95 19:06:21.038 OSC TRIGGER

05/31/95 12:16:42.091 TRIP CIRCUIT #1 MONITOR ALARM ON05/31/95 12:16:41.915 TRIP CIRCUIT #1 MONITOR ALARM ON

05/31/95 12:16:41.879 REMOTE COMM - SETTINGS CHANGE DONE05/31/95 12:16:30.720 REMOTE COMM - SETTINGS CHANGE STARTED

05/31/95 12:13:48.392 REMOTE COMM - PASSWORD CHANGED05/31/95 12:11:53.383 REMOTE COMM - PASSWORD CHANGED

05/31/95 12:10:37.847 UNBALANCED SYSTEM DETECTION ALARM ON05/31/95 12:10:29.930 REMOTE COMM - PASSWORD CHANGED

05/31/95 12:09:35.302 FUSE FAILURE ALARM ON05/31/95 12:09:35.175 LOCAL - SETTINGS CHANGE DONE

05/31/95 12:09:30.826 LOCAL - SETTINGS CHANGE STARTED05/31/95 12:07:22.109 UNBALANCED SYSTEM DETECTION ALARM ON

05/31/95 12:06:00.042 FUSE FAILURE ALARM ON05/31/95 12:06:00.000 SSP BOARD: QUEUES REINITIALIZED

05/31/95 12:05:30.210 FAIL - TRIP BUS CHECK05/31/95 12:05:30.177 FUSE FAILURE ALARM ON

29

Industrial Systems

Oscillography TriggersOscillography Triggers

None Fault Detector Any Zone 2 Any Zone 3 Any Zone 4 Out-of-Step V1 Detector External Contact Input

30

Industrial Systems

Flexible Oscillography Data StorageFlexible Oscillography Data Storage

# Faults Stored Cycles

2 72

4 36

7 18

14 9

Pre-fault Cycles Selectable from 1 to 8 Settings and Fault Report are stored with

Oscillography Data

31

Industrial Systems

Oscillography DataOscillography Data

Internal and External Oscillography Triggering

ASCII File Format(Readable by EXCEL/LOTUS/DL-DATA)

For Each Sample4 Currents (IA, IB, IC, IN)

3 Voltages (VA, VB, VC)

6 Flag GroupsDigital Inputs

Outputs

Phase Zone Flags

Breaker Status and Gnd. Zone Flags

Protection Logical Input Flags

Output Status of Protection Timers

32

Industrial Systems

33

Industrial Systems

Hardware and PackagingHardware and Packaging

Draw-Out Modular Construction with Removable Door Front Panel Power Switch Information Access

– MMI

– RS232 Front & Rear (GE Modem)

– RS232 Rear (ASCII)

Target Clearing Through Door Optional Mounting Flanges for L2 and KD cutouts and

Moveable Mounting Brackets Self-Test Diagnostics

– Critical Alarm

– Non-Critical Alarm

34

Industrial Systems

Hardware and PackagingHardware and Packaging

Magnetics are easily accessible, but not part of Drawout Assembly

– Improves reliably by eliminating CT shorting bars

35

Industrial Systems

Nomenclature Selection GuideNomenclature Selection GuideDLP * * * * * * *

1 1 AMP Rated

5 5 AMP Rated

0 48 Vdc Battery Voltage

1 110/125 Vdc Battery Voltage

2 220/250 Vdc Battery Voltage

1 SCR Tripping Output

2 Relay Tripping Output

3 C Three Phase Tripping, Without Recloser

1 J Single Phase Tripping, Without Recloser

1 K Single Phase Tripping, With Recloser

3 K Three Phase Tripping, With Recloser

D Revision Level

H Horizontal Mounting

V Vertical Mounting