DistanceProtection using Tele-Communication Schemes.pdf

1. ABB
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ABB
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1
RE.316_
TeleComm
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2003-10-01
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RW
Technology and Solutions
Protection and Substation Automation
Topic:
REL316*4
Distance Protection
using Tele-
Communication
Schemes
BASICS
BASICS

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RE.316_TeleComm
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REL316*4 Distance Protection with Tele- Communication
Objectives
‰ Problem Description
‰ Solution
‰ Basic Tripping Schemes
‰ PUTT - Permissive Underreaching Transferred Tripping
‰ POTT - Permissive Overreaching Transferred Tripping
‰ BLOCK OR - BLOCKing OverReaching
‰ DTT - Direct Transfer Trip

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RE.316_TeleComm
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REL316*4 Problem Description
Starter Zone 2
Zone 3
Overreach zone
Starter
Zone 1
Zone 3
Zone 1
Overreach Zone
Reverse Zone
R
Starter
Zone 2
Faults near the ends of the line
section will be cleared at zone 2
time, with additional time delay
(this is often acceptable at the distribution
level, if fast reclosure is not required)

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RE.316_TeleComm
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REL316*4 Solution
Tele- Communication Schemes
allow
• High speed tripping for all kind of faults
occurring on 100% of the protected line
• Strict selectivity between two stations
108 .. 109 VA
(1 GVA)
10 -8 Watt
(- 50dBm)
Station A Station B

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2003-10-01
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REL316*4 Basic Tripping Schemes
PUTT: Permissive Underreaching
Transferred Tripping
POTT: Permissive Overreaching
Transferred Tripping
BLOCK OR: BLOCKing OverReaching
DTT: Direct Transfer Trip

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REL316*4 PUTT (basic)
Starter
Z underreaching
Z underreaching
Starter
&
TRIP
Z- underreaching
& TRIP
Starter *)
RX
Starter *)
T 2
&
Starter
&
Z-underreaching
Starter
RX
*) Alternatively:
Starter + U-Wea
T 2
≥1 ≥1
Z- underreaching
Z- underreaching

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RE.316_TeleComm
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REL316*4 PUTT (basic)
&
Z underreaching
&
TRIP
Starter *)
Z under-
reaching
Starter *)
Z underreaching
Z underreaching
&
Starter
&
TRIP
Starter
RX
*) Alternatively:
Starting + U-Weak
Starter
Starter
T 2
T 2
Z- underreaching
Z- underreaching
RX
≥1 ≥1

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REL316*4 POTT (basic)
Starter
&
TRIP Z overeaching
RX
Z overeaching
& TRIP
Z overeaching
RX
Z overeaching
Z overreaching
Z overreaching
Starter

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RE.316_TeleComm
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REL316*4 POTT (basic)
Starter
&
TRIP Z overeaching
RX
Z overeaching
& TRIP
Z overeaching
RX
Z overeaching
Z overreaching
Z overreaching
Starter

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REL316*4 BLOCK OR (basic)
Z1
Z reverse Z overreaching
Z overreaching Z reverse
Z1
Z2
Z3
Starter
Z1, t1; Z2, t2; Z3, t3; Starter, tEnd
Z1, t1; Z2, t2; Z3, t3; Starter, tEnd
Z overeaching
Z over-
reaching
&
Z reverse
&
Z reverse
TRIP
Z overeaching
RX
&
&
20 ms
t wait (t1Block)
TRIP TRIP
t wait (t1Block)
Z overeaching
Loos of signal
&
Loos of signal
&
TRIP
20 ms
RX

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REL316*4 BLOCK OR (basic)
Z reverse Z overreaching
Z1
Z overreaching Z reverse
Z1
Z2
Z3
Starter
Z1, t1; Z2, t2; Z3, t3; Starter, tEnd
Z1, t1; Z2, t2; Z3, t3; Starter, tEnd
Z overeaching
Z over-
reaching
&
Z reverse
&
Z reverse
TRIP
Z overeaching
RX
&
&
20 ms
t wait (t1Block)
TRIP TRIP
t wait (t1Block)
Z overeaching
Loos of signal
&
Loos of signal
&
TRIP
20 ms
RX

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REL316*4 DTT (basic)
TRIP
TRIP
RX
Starter
Z underreaching
Z underreaching
Starter
&
Starter
&
Z-underreaching
Starter
≥1 ≥1
Z- underreaching
RX

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