P44x/EN AP/E33
Application Notes
Page 54/220
MiCOM P441/P442 & P444
•
If the signalling channel is taken out of service, the relay will operate in the
conventional Basic mode.
•
A current reversal guard timer is included in the signal send logic to prevent unwanted
trips of the relay on the healthy circuit, during current reversal situations on a parallel
circuit.
•
To allow time for a blocking signal to arrive, a short time delay on aided tripping, Tp,
must be used, as follows:
Recommended Tp setting
=
Max. signalling channel operating time + 14ms
2.9.5.1
Blocking Overreach Protection with Overreaching Zone 2 (BOP Z2)
This scheme is similar to that used in the other ALSTOM distance relays. Figure 30 shows
the zone reaches, and Figure 31 the simplified scheme logic. The signalling channel is
keyed from operation of the reverse zone 4 elements of the relay. If the remote relay has
picked up in zone 2, then it will operate after the Tp delay if no block is received.
Send logic:
Reverse Zone 4
Trip logic:
Zone 2, plus Channel NOT Received, delayed by Tp.
P3063XXa
ZL
Z1A
A
B
Z1B
Z2A
Z2B
Z4A
Z4B
FIGURE 30 - MAIN PROTECTION IN THE BOP Z2 SCHEME
P0533ENa
Protection A
Protection B
&
Z1'
T1
&
Z3'
T3
&
Zp'
Tzp
&
Z4'
T4
T2
Z2'
&
&
&
&
&
Z1'
T1
Z3'
T3
Zp'
Tzp
Z4'
T4
&
Tp
&
Emission
Téléac
Emission
Téléac
Z2'
T2
&
Tp
tZ1
tZ2
tZ3
tZp
tZ4
Signal
Send Z4'
Signal
Send Z4'
tZ1
tZ2
tZ3
tZp
tZ4
Trip
Trip
≥
1
≥
1
FIGURE 31 - LOGIC DIAGRAM FOR THE BOP Z2 SCHEME
(SEE TRIP LOGIC TABLE IN SECTION 2.8.2.4)
Summary of Contents for MiCOM P441
Page 1: ...MiCOM P441 P442 P444 Numerical Distance Protection VC2 x Technical Guide P44x EN T E44...
Page 2: ......
Page 4: ...P44x EN T E44 Technical Guide Page 2 2 MiCOM P441 P442 P444 BLANK PAGE...
Page 5: ...Pxxxx EN SS C11 SAFETY SECTION...
Page 6: ......
Page 8: ...Pxxxx EN SS C11 Page 2 10 Safety Section BLANK PAGE...
Page 17: ...Update Documentation P44x EN AD E44 MiCOM P441 P442 P444 UPDATE DOCUMENTATION VERSION C2 X...
Page 18: ......
Page 22: ...P44x EN AD E44 Update Documentation Page 4 82 MiCOM P441 P442 P444 BLANK PAGE...
Page 23: ...Update Documentation P44x EN AD E44 MiCOM P441 P442 P444 Page 5 82 P44X EN IT E33 INTRODUCTION...
Page 24: ......
Page 34: ......
Page 44: ......
Page 96: ...P44x EN AD E44 Update Documentation Page 78 82 MiCOM P441 P442 P444 BLANK PAGE...
Page 98: ......
Page 100: ...P44x EN AD E44 Update Documentation Page 82 82 MiCOM P441 P442 P444 BLANK PAGE...
Page 101: ...Introduction P44x EN IT E33 MiCOM P441 P442 P444 INTRODUCTION...
Page 102: ......
Page 104: ...P44x EN IT E33 Introduction Page 2 24 MiCOM P441 P442 P444 BLANK PAGE...
Page 127: ...Relay Description P44x EN HW E33 MiCOM P441 P442 P444 RELAY DESCRIPTION...
Page 128: ......
Page 132: ...P44x EN HW E33 Relay Description Page 4 44 MiCOM P441 P442 P444 BLANK PAGE...
Page 152: ...P44x EN HW E33 Relay Description Page 24 44 MiCOM P441 P442 P444 Example isolated AC fault...
Page 153: ...Relay Description P44x EN HW E33 MiCOM P441 P442 P444 Page 25 44...
Page 173: ...Application Notes P44x EN AP E33 MiCOM P441 P442 P444 APPLICATION NOTES...
Page 174: ......
Page 180: ...P44x EN AP E33 Application Notes Page 6 220 MiCOM P441 P442 P444 BLANK PAGE...
Page 357: ...Application Notes P44x EN AP E33 MiCOM P441 P442 P444 Page 183 220...
Page 364: ...P44x EN AP E33 Application Notes Page 190 220 MiCOM P441 P442 P444 BLANK PAGE...
Page 394: ...P44x EN AP E33 Application Notes Page 220 220 MiCOM P441 P442 P444 BLANK PAGE...
Page 395: ...Technical Data P44x EN TD E33 MiCOM P441 P442 P444 TECHNICAL DATA...
Page 396: ......
Page 400: ...P44x EN TD E33 Technical Data Page 4 30 MiCOM P441 P442 P444 BLANK PAGE...
Page 427: ...Installation P44x EN IN E33 MiCOM P441 P442 P444 INSTALLATION...
Page 428: ......
Page 430: ...P44x EN IN E33 Installation Page 2 10 MiCOM P441 P442 P444 BLANK PAGE...
Page 438: ...P44x EN IN E33 Installation Page 10 10 MiCOM P441 P442 P444 BLANK PAGE...
Page 439: ...Commissioning P44x EN CM E33 MiCOM P441 P442 P444 COMMISSIONING...
Page 440: ......
Page 494: ...P44x EN CM E33 Commissioning Page 54 54 MiCOM P441 P442 P444 BLANK PAGE...
Page 496: ......
Page 498: ...P44x EN RS E33 Commissioning Test Record Sheets Page 2 10 MiCOM P441 P442 P444 BLANK PAGE...
Page 507: ...Connection Diagrams P44x EN CO E33 MiCOM P441 P442 P444 CONNECTION DIAGRAMS...
Page 508: ......
Page 510: ...P44x EN CO E33 Connection Diagrams Page 2 12 MiCOM P441 P442 P444 BLANK PAGE...
Page 520: ...P44x EN CO E33 Connection Diagrams Page 12 12 MiCOM P441 P442 P444 BLANK PAGE...
Page 521: ...Courrier Data Base P44x EN GC E44 MiCOM P441 P442 P444 CONFIGURATION MAPPING...
Page 610: ...Courier Data Base P44x EN GC E44 MiCOM P441 P442 P444 DEFAULT PROGRAMMABLE SCHEME LOGIC PSL...
Page 615: ...Menu Content Tables P44x EN HI E44 MiCOM P441 P442 P444 MENU CONTENT TABLES...
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Page 634: ...P44x EN VC E44 Hardware Software Version Page 8 8 MiCOM P441 P442 P444 BLANK PAGE...
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