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Technical Data P44x/EN TD/E33

MiCOM P441/P442 & P444 Page 17/30

6. PROTECTION SETTING RANGES

6.1 Distance Protection

6.1.1 Line Settings

Setting Range Step size

Length of line (Ln) 0.3 - 1000 km0.2 - 625 miles

0.010 km0.005 miles

Positive sequence angle (-1) 90 - 90 0.1

In = 1 A In = 5 A

Setting Range Step size Range Step size

Positive sequence impedance(Z

1)

0.001 - 500 : 0.001 : 0.002 -

199,8 :0.002:

6.1.2 Zones settings

Setting In = 1 A In = 5 A

Range Step size Range Step size

Impedance reaches(Zone 1, Zone 2, Zone 3, Zone P,Zone 4)

0.001 - 500 : 0.001 : 0.0002 -

100 :0.0002:

Resistive reaches for phase -earth faults(Zone 1, Zone 2, Zones 3 & 4,Zone P)

0 - 400 : 0.01 : 0 - 80 : 0.002 :

Resistive reaches for phase -

earth faults(Zone 1, Zone 2, Zones 3 & 4,Zone P)

0 - 400 : 0.01 : 0 - 80 : 0.002 :

Setting Range Step size

Residual compensation angles(Zone 1, Zone 2, Zones 3 & 4,Zone P)

180-180 0.1

Residual compensation factors(Zone 1, Zone 2, Zones 3 & 4,Zone P)

0 - 7 0.001

Timer for zone 1/1X 0 - 10s 0.002s

Timers for zone 2, Zone 3,Zone P, Zone 4

0 - 10s 0.01s

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P44x/EN TD/E33 Technical Data

Page 18/30 MiCOM P441/P442 & P444

6.1.3 Power-swing settings

In = 1 A In = 5 A

Setting Range Step size Range Step size

Powerswing detection boundaries:Delta R

Delta X

0 - 400 :

0 - 400 :

0.01 :

0.01 :

0 - 80 :

0 - 80 :

0.002 :

0.002 :

Setting Range Step size

Imax line In - 20 In 0.01 In

IN threshold 10 - 100 % Imax 1%Imax

I2 threshold 10 - 100 % Imax 1%Imax

Trip mode Single/Three pole -

Unblocking time delay 0 - 30s 0.1s

Power-swing detection boundary 0 - 25:

0.01:

Block zones Bit 0: Z1&Z1X-Block, Bit 1: Z2 blockBit 2: Z3 block, Bit 3: Zp block, Bit 4:Z4block

6.2 Distance protection schemes

Basic scheme functions: Instantaneous zone 1 tripping

Time delayed tripping for all zones

Directional earth fault protection

Zero sequence Power protection (since B1.0)

Switch on to fault logic

Trip on reclose logicLoss of load logic

Conversion to three pole tripping

Channel-aided distance schemes: Permissive Overreach Protection withOverreaching Zone 1 (POP Z1)

Permissive Overreach Protection withOverreaching Zone 2 (POP Z2)

Permissive Underreach Protection, AcceleratingZone 2 (PUP Z2)

Permissive Underreach Protection Tripping viaForward Start (PUP Fwd)

Blocking Overreach Protection with OverreachingZone 1 (BOP Z1)

Blocking Overreach Protection with OverreachingZone 2 (BOP Z2)

Permissive Scheme Unblocking Logic

Permissive Overreach Schemes Weak InfeedFeatures

Permissive Overreach Schemes Current ReversalGuard

Blocking Scheme Current Reversal Guard