Digital Line Protection System

Transcription

1 Digital Line Protection System! Microprocessor Based Protection, Control and Monitoring System! Waveform Sampling! Proven Protection! Economical! Ease of Retrofit 1

2 DLP-D D Enhancements ASCII SUBSET Three Phase & Single Phase Tripping Continuous Monitor Alarm 2 Shot Recloser Optional DLP-C Repackaged g Digital Line Protection GE PROTECTION AND CONTROL Malvern, PA MODEL DLP3512CDH Ratings: In 5 AMPS Vn 120 Vac Freq 60 Hz GEK COMM GREEN: PROTECTION ON RED: CHECK STATUS TRIP AC Z1 50 SET 1/Y 2 3/N CLR INF ACT END PRT 0 ENT. Power ON 01 OFF Proven Design Unbalance Alarm Detection New Packaging 3 RU High Horizontal or Vertical SCADA Involved Phases Indication Standard Carrier Start Options 2

3 Overview of DLP Operation! Multiple Microprocessors (3)! Sampling Rate = 16/Cycle I V ANALOG TO DIGITAL CONVERTER MicroP s & EPROMS SETTINGS DISPLAY RS232 MMI RECURSIVE FOURIER TRANSFORM EMULATION OF: PHASE ANGLE COMPARATORS, AMPLITUDE COMPARATORS, ETC. MEASURING FUNCTIONS PHASOR QUANTITIES LOGIC OUTPUTS 3

4 DLP 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 4

5 DLP Operating Times! SCR Tripping Times! PT Potential Source 50 Milliseconds Minimum Maximum IZ-V (Per Unit Volts) 10 5

6 DLP Operating Times! SCR Tripping Times! CVT Potential Source 50 Milliseconds Maximum Minimum IZ-V (Per Unit Volts) 10 6

7 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 7

8 Measuring Functions DISTANCE 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 8

9 Measuring Functions OVERCURRENT (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) DIRECTIONAL NT NB - Trip - Block 9

10 Inverse Very Inverse Ground TOC Curves? Custom! 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 RelayEditor TM curves Any custom curve designed with ASPEN RelayEditor TM Extremely Inverse Definite Time 10

11 Additional 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 11

12 Recloser (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 12

13 Inputs - 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 13

14 Inputs - 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 14

15 Configurable Inputs (1701) CONCCI CC4 CC5 CC6 SELECT SETTINGS GROUP DEFAULT 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 USER INPUT 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 15

16 Configurable Inputs / Adaptive Settings Settings CC5 CC6 Group 0 0 G1 0 1 G2 1 0 G3 1 1 G4 SETTINGS GROUP SWITCH 16SB1 CONTACT NUMBER G4 G3 G2 G X X X X 4 SETTINGS GROUP SG 1 G1 + - CC5 (bit 1) G4 G2 SG 3 16 G3 + - CC6 (bit 0)

17 Outputs - 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 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

18 Outputs - 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

19 Configurable 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 = (1809) CO1 IN8 = 0 19

20 SCADA 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 Type Example: A B C Phase A to Neutral Fault Indication G 20

21 TRIP AB Z1 44! 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 21

22 Present Value Reporting! Voltages! Watts! Phase Angles! Currents! Vars! Breaker Status Automatically Displayed and Updated In Four Second Intervals on LED Display 22

23 ! 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 Communications 23

24 Communications [ - ] DLP COMMUNICATIONS 2.80 Relay Functions Local Functions Setup Help Login Logout Change access level Hang up phone Actions... Information... Settings... Phone disconnected! 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 24

25 Remote Access - Rear ASCII Port ASCII PORT HELP SCREEN STATION: MALVERN LINE: LINE 1 UNIT ID: 0 STATUS VALUES MODEL EVENTS SHOWSET STLINID FAULT FSTATUS LOGIN LOGOUT DATE: 08/24/96 TIME: 10:57:51 - Request DLP Status - Request Present Values - Request PROM and MODEL numbers - Request event report - Request setting group information - Request station and line ID - Request fault report - Request status of all faults - Login request - Logout request STATION: MALVERN LINE: LINE 1 UNIT ID: 0 DATE: 08/24/96 TIME: 10:57:51 MODEL NUMBER: DLP3512CDH PROM VERSION NUMBER: V B INFORMATION ONLY 25

26 Fault Report Sample DLP 5512 FAULT REPORT Station ID: PLACE TRANSMISSION Line ID: CREEK 115KV OCB 5512 TRIP DATE: 09/11/95 TRIP TIME: 15:16: FAULT TYPE: AB DISTANCE: **** MILES TRIP TYPE: Z4 OPERATING TIME: PREFAULT FAULT Ia: A Ia: A Ib: A Ib: A Ic: A Ic: A In: A In: A! Prefault Currents Voltages! Post Fault Currents Voltages Trip Targets Operating Time! Selected Events Va: KV Vb: KV Vc: KV 15:16: TRIP SIGNALS ON 15:16: TRIP SIGNALS RESET 15:16: TRIP CIRCUIT #1 NOT ENERGIZED 26

27 Present Values Sample DLP 5072 PRESENT VALUES Station ID: CREEK TRANSMISSION Line ID: 115KV OCB IA: A -001 DEGS IB: A 119 DEGS IC: A -119 DEGS IN: A WATTS: MW BREAKER 1: CLOSED 09/18/95 14:23: VA: V 000 DEGS VB: V 121 DEGS VC: V -119 DEGS **** DEGS VARS: MVAR BREAKER 2: N/A! Currents! Voltages! Angles! Watts! Vars! Breaker Status! Carrier Status! Active Setting Group PLC #1 SIGNAL: OFF PLC #1 STATUS: N/A PLC #2 SIGNAL: OFF PLC #2 STATUS: N/A STOP CARRIER: OFF SETTING GROUP NUMBER: 1 BLOCK PILOT TRIP: OFF 27

28 Sequence of Events Sample DLP 5072 Events Station ID: CREEK TRANSMISSION Line ID: 115KV OCB 07/25/95 19:06: TRIP SIGNALS RESET 07/25/95 19:06: TRIP CIRCUIT #1 NOT ENERGIZED 07/25/95 19:06: TRIP SIGNALS ON 07/25/95 19:06: OSC TRIGGER 05/31/95 12:16: TRIP CIRCUIT #1 MONITOR ALARM ON 05/31/95 12:16: TRIP CIRCUIT #1 MONITOR ALARM ON 05/31/95 12:16: REMOTE COMM - SETTINGS CHANGE DONE 05/31/95 12:16: REMOTE COMM - SETTINGS CHANGE STARTED 05/31/95 12:13: REMOTE COMM - PASSWORD CHANGED 05/31/95 12:11: REMOTE COMM - PASSWORD CHANGED 05/31/95 12:10: UNBALANCED SYSTEM DETECTION ALARM ON 05/31/95 12:10: REMOTE COMM - PASSWORD CHANGED 05/31/95 12:09: FUSE FAILURE ALARM ON 05/31/95 12:09: LOCAL - SETTINGS CHANGE DONE 05/31/95 12:09: LOCAL - SETTINGS CHANGE STARTED 05/31/95 12:07: UNBALANCED SYSTEM DETECTION ALARM ON 05/31/95 12:06: FUSE FAILURE ALARM ON 05/31/95 12:06: SSP BOARD: QUEUES REINITIALIZED 05/31/95 12:05: FAIL - TRIP BUS CHECK 05/31/95 12:05: FUSE FAILURE ALARM ON! 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 28

29 Oscillography Triggers! None! Fault Detector! Any Zone 2! Any Zone 3! Any Zone 4! Out-of-Step! V1 Detector! External Contact Input 29

30 Flexible Oscillography Data Storage # Faults Stored Cycles ! Pre-fault Cycles Selectable from 1 to 8! Settings and Fault Report are stored with Oscillography Data 30

31 Oscillography Data! Internal and External Oscillography Triggering! ASCII File Format (Readable by EXCEL/LOTUS/DL-DATA)! For Each Sample 4 Currents (IA, IB, IC, IN) 3 Voltages (VA, VB, VC) 6 Flag Groups Digital Inputs Outputs Phase Zone Flags Breaker Status and Gnd. Zone Flags Protection Logical Input Flags Output Status of Protection Timers 31

32 32 Industrial Systems

33 Hardware 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 33

34 Hardware and Packaging! Magnetics are easily accessible, but not part of Drawout Assembly Improves reliably by eliminating CT shorting bars 34

35 Nomenclature Selection Guide DLP * * * * * * * 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 35 D H V Revision Level Horizontal Mounting Vertical Mounting