p63x presentation
TRANSCRIPT
MiCOM P63X Transf. Differential Protection
Mathew Koshy
April 2002April 2002
ProtectionProtection
MiCOM P631/632/633/634Transf. Differential ProtectionApplications
Two Winding Transformers
Unit TransformersThree Winding Transformers
Reactors
Generators
Ring Bus Fed Windings
Auto Transformers
Motors
MiCOM P631/632/633/634Transf. Differential ProtectionMain Functions
ANSI No. P631 P632 P633 P634
Differential protection 87 2 wind. 2 wind. 3 wind. 4 wind.
Restricted earth fault protection 87G – 2 3 3
Definite-time O/C protection 50 2 2 3 3
Inverse-time O/C protection 51 2 2 3 3
Thermal overload protection 49 1 1 2 2
Over/undervoltage protection 27, 59 – 1 1 1
Over/underfrequency protection 81 – 1 1 1
Overexcitation protection 24 – 1 1 1
Limit value monitoring 2 2 3 3
Programmable logic 1 1 1 1
P631 P632 P633 P634
Measuring inputs
Phase currents 2 x 3 2 x 3 3 x 3 4 x 3
Residual current or neutral-point current – 2 3 3
Voltage – 1 1 1
Binary inputs and outputs
Optical coupler inputs (per order) 4 4 to 10 4 to 16 4 to 10
Add. optical coupler inputs (optional) – 24 24 24
Output relays (per order) 8 to 14 8 to 22 8 to 30 8 to 22
Analogue inputs and outputs (optional)
0 to 20 mA input – 1 1 1
PT 100 input – 1 1 1
0 to 20 mA outputs – 2 2 2
MiCOM P631/632/633/634Transf. Differential ProtectionInputs and Outputs
D IFF
Differential Protection
MiCOM P631/632/633/634Functional Details
3-system differential protection for transformers, generators and motors
2, 3 or 4 bias inputs per phase Amplitude and vector group matching Zero sequence current filtering for each winding Triple-slope tripping characteristic Unrestrained instanteneous differential element Magnetizing inrush stabilization (second harmonic), with/without
cross-blocking Overflux blocking (fifth harmonic) Through-fault stability with c.t. saturation detection
GGC
GG
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
G
G
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
G
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
G
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
P631 P632 P633 P634
GGC
GG
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
G
G
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
G
G
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
MiCOM P631/632/633/634Differential ProtectionMain Features
A
B
CW ind ing a
Inom, C T, prim , a V nom, prim , a V nom, prim , b
Sref, prim = Snom, prim , max
Inom, C T, prim , b
A
B
C
W ind ing b
All you have to do: Simply set these nominal values!
MiCOM P631/632/633/634Differential ProtectionAmplitude Matching
MiCOM 30 SeriesTransf. Differential ProtectionAmplitude Matching: Factor kamp,z
C
B
A
C
B
A
N a N b
k amp,a k amp,b
a,x,amp)rel(
a,x(sec)
a,x)prim(
a,x I I I I )prim(b,x
(sec)b,x
)rel(b,xb,x,amp I I I I
MiCOM 30 SeriesTransf. Differential ProtectionAmplitude Matching: Restrictions
z,x
)prim(z,nom
)prim(ref
)prim(z,CT,nom
z,x)prim(z,ref
)prim(z,CT,nom
z,xz,ampz,x,amp I
V3
S
II
I
IIkI
The individual phase currents Ix,z are multiplied by the amplitude-matching factor kamp,z of the corresponding end
z.
5k z,amp 3k
k
1max,amp
max,amp
0.7k 1max,amp
Restrictions:
DIFF Reference power Sref 38.1 MVA (0.1 ... 5000.0)DIFF Ref. curr. Iref,a Not measuredDIFF Ref. curr. Iref,b Not measuredDIFF Ref. curr. Iref,c Not measuredDIFF Ref. curr. Iref,d Not measured
DIFF Matching fact. kam,a Not measuredDIFF Matching fact. kam,b Not measuredDIFF Matching fact. kam,c Not measuredDIFF Matching fact. kam,d Not measured
MiCOM 30 SeriesTransf. Differential ProtectionAmplitude Matching: Function Parameters
MAIN Inom C.T.prim.,end a 200 A (1 ... 50000)MAIN Inom C.T.prim.,end b 200 A (1 ... 50000)MAIN Inom C.T.prim.,end c 200 A (1 ... 50000)MAIN Inom C.T.prim.,end d 200 A (1 ... 50000)
MAIN Vnom prim., end a 110.0 kV (0.1 ... 1500.0)MAIN Vnom prim., end b 110.0 kV (0.1 ... 1500.0)MAIN Vnom prim., end c 110.0 kV (0.1 ... 1500.0)MAIN Vnom prim., end d 110.0 kV (0.1 ... 1500.0)
Calculated automatically by the relay read only!
MiCOM 30 SeriesTransf. Differential ProtectionAmplitude Matching: Example
Winding a
400 / 1 A
1000 / 1 A
1000 / 1 A
52.5 kV 10.5 kV
25 MVA
Iref,prim,a = 275 A
kamp,a = 1.455
Sref,prim = 25 MVA
Iref,prim,b = 1375 A
kamp,b = 0.727kamp,a / kamp,b = 2
Dy7
Winding b
A
B
CW ind ing a
0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 o r 11
A
B
C
W ind ing b
All you have to do: Simply set the vector group ID!
MiCOM 30 SeriesTransf. Differential ProtectionVector Group Matching
MiCOM 30 SeriesTransf. Differential ProtectionVector Group Matching
• No operation is carried out on the HV winding
(Winding “a”)
w.r.t vector group matching
• Vector group matching done only on LV side (winding
b/c) by
mathematical phasor operation
• How is vector group matching done on LV side?
Each LV amp. matched current vector is added to the
negative
of the trailing/leading current vector and then divided
by 3
in case of odd groups
Group No. Phasor Operation
1 I vec,z = 1/3 . (I amp,x,z – I amp,x+1,z)3 I vec,z = 1/3 . (I amp,x-1,z – I amp,x+1,z)5 I vec,z = 1/3 . (I amp,x-1,z – I amp,x,z)7 I vec,z = 1/3 . (I amp,x+1,z – I amp,x,z)
9 I vec,z = 1/3 . (I amp,x+1,z – I amp,x-1,z)
11 I vec,z = 1/3 . (I amp,x,z – I amp,x-1,z)
Meanings of abbreviations usedx phase A, B or C resp.
amp amplitude matched x+1 cyclically trailing phase
vec amplitude and vector group matched x-1 cyclically leading phase
z winding a, b, c or d resp.
Vector Group Matching for Odd numbered Vector Groups
Iamp,A ,a
Iamp,B,aIamp,C ,a Iamp,A ,b
Iamp,B,b
Iamp,C ,b
- Iamp,A ,bIamp,C ,b - Iamp,A ,b
1/ 3∙(Iamp,C ,b - Iamp,A ,b)
C
N a
5∙30°
B
A
N b
C
B
A
MiCOM 30 SeriesTransf. Differential ProtectionVector Group Matching: Transformer Yd5
A
B
C
W ind ing a
w ith I0 fi ltering w ithout I0 fi ltering
A
B
C
W ind ing b
All you have to do: Simply set ‘with‘ or ‘without‘!
MiCOM P631/632/633/634Differential ProtectionZero Sequence Current Filtering
Zero Sequence Filtering for Odd numbered Vector Groups
• The mathematical phasor operations done on the LV side for the vector group matching automatically filter out the zero sequence current component present
So for all D Y-n groups, no need to activate zero seq. filtering
For all Y-n D groups, zero seq. filtering to be activated for theHV winding only
• How is Zero Sequence current filtering done on HV side?
I_vec,y,z = I_amp,x,z - I_amp,zero,z
I_amp,zero,z = 1 . ( I_amp,A,z + I_amp,B,z + I_amp,C,z ) 3
MiCOM 30 SeriesTransf. Differential ProtectionVector Group Matching: Function Parameters
DIFF Vector grp. ends a-b 0 (0 ... 11)DIFF Vector grp. ends a-c 0 (0 ... 11)DIFF Vector grp. ends a-d 0 (0 ... 11)
Zero Sequence Current Filtering: Function Parameters
DIFF 0-seq. filt.a en.PS1 Yes DIFF 0-seq. filt.b en.PS1 Yes DIFF 0-seq. filt.c en.PS1 Yes DIFF 0-seq. filt.d en.PS1 Yes
Parameter Subset 1
019.020 MAIN Inom C.T.prim.,end a 200 A (1 ... 50000)019.021 MAIN Inom C.T.prim.,end b 200 A (1 ... 50000)019.022 MAIN Inom C.T.prim.,end c 200 A (1 ... 50000)
019.017 MAIN Vnom prim., end a 110.0 kV (0.1 ... 1500.0)019.018 MAIN Vnom prim., end b 110.0 kV (0.1 ... 1500.0)019.019 MAIN Vnom prim., end c 110.0 kV (0.1 ... 1500.0)
019.016 DIFF Reference power Sref 38.1 MVA (0.1 ... 5000.0)019.023 DIFF Ref. curr. Iref,a Not measured019.024 DIFF Ref. curr. Iref,b Not measured019.025 DIFF Ref. curr. Iref,c Not measured004.105 DIFF Matching fact. kam,a Not measured004.106 DIFF Matching fact. kam,b Not measured004.127 DIFF Matching fact. kam,c Not measured
019.010 DIFF Vector grp. ends a-b 0 (0 ... 11)019.011 DIFF Vector grp. ends a-c 0 (0 ... 11)
P630 Transformer Differential Protection Differential Protection (DIFF)
Amplitude and Vector Group Matching: Relay Settings
Calculated automatically by the relay read only!
Tripping CharacteristicTripping Characteristic
MiCOM 30 SeriesTransf. Differential ProtectionDefinition of Id and IR
c,y,vecb,y,veca,y,vecy,R
b,y,veca,y,vecy,R
c,y,vecb,y,veca,y,vecy,d
III2
1I
II2
1I
IIIIDifferential current
Amplitude and vector group matched currents
from ends a, b, ...
Restraining current
for 2 ends
for > 2 ends
for measuring system y
(1, 2 or 3 resp.)
MiCOM 30 SeriesTransf. Differential ProtectionTripping Characteristic
1 2 3 4
1
2
0
Id
IR
Load linefo r sing le- end in feed
Id>
m 1
m 2
IR,m2
Basic threshould value Id>, slope m1, second knee point IR,m2 and slope m2 are settable.
MiCOM 30 SeriesTransf. Differential ProtectionTripping Characteristic: First Section
1 2 3 4
1
2
0
Id
IR
Load linefor single-end infeed
Magnetizing currentcharacteristic
Id>
First section oftripping characteristic
The basic threshold value Id> takes into account the magnetizing current of the transformer.
MiCOM 30 SeriesTransf. Differential ProtectionTripping Characteristic: Second Section
1 2 3 4
1
2
0
Id
IR
Load linefo r sing le- end in feed
Id>
Transfo rm ation erro rcha racteristics
fo r tw o o r th reecurrent transfo rm er sets
Second section o ftr ipp ing cha racteristic
m 1
First knee po in t o ftr ipp ing cha racteristic
The slope m1 should correspond to the cumulative total error of the participating CT sets.
MiCOM 30 SeriesTransf. Differential Protection
In case of HV on-load tap changer device:
•Amplitude matching needs to be done for a mean nominal
voltage on HV side (a).
- Therefore, set : Vnom.prim.,a = Vnom,a,min x Vnom,a,max
- Also, m1 setting should be increased by a factor of:
Inom,(p),a,max - Inom,(p),a,mid
1 . (Inom,(p),a,max + Inom,(p),a,mid)
2
R1 2 3 4
1
2
0
Id
I
Load linefor single-end infeed
Id>
m1
Third section oftripping characteristic
m2Second knee point oftripping characteristic
IR,m2
•The second knee point must be set in accordance with the max. possible load current (4.Iref considered max.; like when a parallel X‘frmr has failed for P634) ;
•m2 to be set high (70%) for through fault stability
Tripping Characteristic: Third Section
MiCOM 30 SeriesTransf. Differential ProtectionTripping Characteristic: Function Parameters
DIFF Enable PS1 No
DIFF Idiff> PS1 0.20 Iref (0.10 ... 2.50)DIFF Idiff>> PS1 15 Iref (5 ... 30)DIFF Idiff>>> PS1 30 Iref (5 ... 30)DIFF m1 PS1 0.3 (0.2 ... 1.5)DIFF m2 PS1 0.7 (0.4 ... 1.5)DIFF IR,m2 PS1 4.0 Iref (1.5 ... 10.0)
DIFF Op.mode harm.bl. PS1 Not phase-selectiveDIFF RushI(2f0)/I(f0) PS1 20 % (10 ... 50)
DIFF Overflux.bl. en. PS1 No DIFF OverI(5f0)/(f0) PS1 20 % (10 ... 80)
Parameter Subset 1
1 2 3 4
1
2
0
Id
IR
Load linefor single-end infeed
Id>
m1
m2
IR,m2
MiCOM P631/632/633/634Differential ProtectionCharacteristic Equations:
•Id = Id> ; Area I
•Id = m1. ( IR - 0.5 Id>) + Id> ; Area II
•Id = m2. IR + Id> . (1 - 0.5.m1 ) + 4.(m1-m2) ; Area III
I
II
III
MiCOM P631/632/633/634Differential ProtectionHigh-set Differential thresholds:High-set Differential thresholds:
Restrained Highset:Restrained Highset:
•Above the adjustable threshold, Idiff>>, relay trips
irrespective of either the 2nd harmonic or the overfluxing
restraint blocks
Unrestrained HighsetUnrestrained Highset:
•Above the adjustable threshold, Idiff>>>, relay trips
irrespective of restraining current and the saturation
discriminator
MiCOM P631/632/633/634Differential Protection
Inrush stabilisationInrush stabilisation
•Since high inrush charging current flows only on the
connected side, important to stabilize the diff. element
•If ratio of I(2xf0) / I(f0) exceeds a set value in atleast one
of the phases, tripping is blocked
•No blocking if diff. Current exceeds Idiff>>
MiCOM P631/632/633/634Differential Protection
Overfluxing restraintOverfluxing restraint
•During overexcitation of transformer, core saturation sets
in and more magnetizing current is drawn; may lead to
maltripping.
•Fifth harmonic restraint facility provided
•If ratio of I(5xf0) / I(f0) exceeds a set value in atleast one
of the phases, tripping is blocked
•No blocking if diff. Current exceeds Idiff>>
Saturation Discriminator Stability with Saturated C.T.’s
ZA0912B
i1
i2
id
Inhibitpulses
id
with inhibit
•No blocking if diff. Current exceeds Idiff>>>
Saturation Discriminator Operation with Saturated C.T.’s
ZA0912B
i2
id
Inhibitpulses
With inhibitid
REF_1
Ground Differential Protection
REF_2 REF_3
MiCOM P631/632/633/634Functional Details
MiCOM P631/632/633/634Ground Differential Protection
•Can be applied to Xfmr windings with grounded neutral
point where a C.T. in neutral to gnd. Path is available
•One Ground diff. Protn available per Xfmr winding
•Based on comparing the Vector sum of phase currents, IN
with the Neutral-point current IY
•The Diff. Protn. Applies under the condition of The Diff. Protn. Applies under the condition of uniformlyuniformly
defined current arrows relative to the Xfmr winding.defined current arrows relative to the Xfmr winding.
Both current arrows point either towards the Both current arrows point either towards the winding or winding or
away from itaway from it
MiCOM 30 SeriesGround Differential ProtectionAmplitude Matching:
IIref,N,zref,N,z = S = Srefref
3.V3.Vnom,znom,z
kkam,N,zam,N,z = I = Inom,znom,z
IIref,N,zref,N,z
kkam,Y,zam,Y,z = I = Inom,Y,znom,Y,z
IIref,N,zref,N,z
•wherewhere
am am : amplitude matched, : amplitude matched, z : winding z : winding
Inom,zInom,z : primary nominal current of the Main C.T.: primary nominal current of the Main C.T.
Inom,Y,z Inom,Y,z : primary nominal current of the Neutral C.T.: primary nominal current of the Neutral C.T.
= 0.2
Id,G /Iref
m = 1.005
1 1.5 20.5
0.5
1
1.5
IR,G/Iref
Fault current (internal fault)characteristicFault current (internal fault)characteristicfor transient saturation of the main C.T.’sfor transient saturation of the main C.T.’s
2
MiCOM P631/632/633/634Ground Differential ProtectionTripping Characteristic
Characteristic equation:
GR,Gd,G,d I+m>I=I
Definition of Id,G and IR,G:
CBAN,ampG,R
YY,ampCBAN,ampG,d
I,I,IkI
IkI,I,IkI
Id,G
>
refI
Ground Differential ProtectionOperation- External FaultsWinding a Winding b
A
B
C
A
B
C
IAE
IAE IN =(IA+IB+IC) =- IAE
IY =+ IAE
Therefore : IId,Gd,G = 0 = 0
IIR,GR,G = = IAE
P63XP63X
Ground Differential ProtectionOperation- Internal FaultsWinding a Winding b
A
B
C
A
B
C
IAE,p
IAE,n IN =(IA+IB+IC) =+ IAE
IY =+ IAE
(Assuming IAE,p = IAE,n = IAE)
Therefore : IId,Gd,G = 2. = 2. IAE
IIR,GR,G = = IAE
P63XP63X
D TO C 1
Definite-Time Overcurrent Protection
D TO C 2 D TO C 3
MiCOM P631/632/633/634Functional Details
Definite-time overcurrent protection, three-stage, phase-selective Each function group (DTOC1, DTOC2, DTOC3) is freely assignable to a
winding Virtual winding may be defined for summation of currents from two
real windings(application on two breakers in a ring bus or breaker-and-a-half configuration)
3 separate measuring systems for phase currents, negative-sequence current and residual current
All 3 measuring systems operate independently of each other:
Settable operate delay per stage Sequence of all operate delays can be blocked
– through appropriately configured binary signal inputs or– per selection matrix via a binary signal input or– per programmable logic (LOGIC)
MiCOM P631/632/633/634Definite-Time O/C ProtectionMain Features
ID M T1
Inverse-Time Overcurrent Protection
ID M T2 ID M T3
MiCOM P631/632/633/634Functional Details
Inverse-time overcurrent protection, single-stage, phase-selective Each function group (IDMT1, IDMT2, IDMT3) is freely assignable to a
winding Virtual winding may be defined for summation of currents from two
real windings(application on two breakers in a ring bus or breaker-and-a-half configuration)
3 separate measuring systems for phase currents, negative-sequence current and residual current
All 3 measuring systems operate independently of each other:
Choice of 12 different tripping time characteristics Accumulation of intermittend startings by means of a hold-time logic Sequence of all operate delays can be blocked
– through appropriately configured binary signal inputs or– per selection matrix via a binary signal input or– per programmable logic (LOGIC)
MiCOM P631/632/633/634Inverse-Time O/C ProtectionMain Features
TH RM 1
Thermal Overload Protection
TH RM 2
MiCOM P631/632/633/634Functional Details
V< >
Over-/Undervoltage Protection
MiCOM P631/632/633/634Functional Details
Definite-time overvoltage protection, two-stage
Definite-time undervoltage protection, two-stage:
Sequence of all operate delays can be blocked– through appropriately configured binary signal inputs or– per selection matrix via a binary signal input or– per programmable logic (LOGIC)
MiCOM P631/632/633/634Over-/Undervoltage ProtectionMain Features
f< >
Over-/Underfrequency Protection
MiCOM P631/632/633/634Functional Details
Over-/underfrequncy protection, four-stage
All four stages operate independently of each other:
Operation modes:– Over-/underfrequency monitoring– Over-/underfrequency monitoring in conjunction with differential
frequency gradient monitoring (df/dt) for system decoupling applications
– Over-/underfrequency monitoring in conjunction with average frequency gradient monitoring (f/t) for load shedding applications
Settable operate delay Sequence of all operate delays can be blocked
– through appropriately configured binary signal inputs or– per selection matrix via a binary signal input or– per programmable logic (LOGIC)
MiCOM P631/632/633/634Over-/Underfrequency ProtectionMain Features
V/ f
Overexcitation Protection
MiCOM P631/632/633/634Functional Details
V/f ratio based measurement
Alarm stage V/f> with definite time delay
Trip stage V/f>> with inverse time characteristic– Characteristic defined by 12 settable value pairs– Cooling time of thermal replica settable
Trip stage V/f>>> with definite time delay
Sequence of all operate delays can be blocked– through appropriately configured binary signal inputs or– per selection matrix via a binary signal input or– per programmable logic (LOGIC)
MiCOM P631/632/633/634Overexcitation ProtectionMain Features
Reset ratio 0.98
MiCOM P631/632/633/634Overexcitation ProtectionTripping Characteristic
V/ f
t
1.00 1.10 1.20 1.30 1.40 1.50 1.60
Vnom / fnom
1
10
100
V/ f> > >
V/ f> >
... ...
LO G IC
Programmable Logic
MiCOM P631/632/633/634Functional Details
MiCOM P631/632/633/634Programmable LogicEmbedding of Programmable Logic
Configuration:
INPLOCPC
COMM1COMM2
Fixed Logic:
DIST, IDMT, DIFF, ...Configuration:
OUTPLEDLOCPC
COMM1COMM2
Control Inputs Trip and SignalsFunctions
MiCOM P631/632/633/634Programmable LogicEmbedding of Programmable Logic
Programmable Logic:
LOGIC
Configuration:
INPLOCPC
COMM1COMM2
Fixed Logic:
DIST, IDMT, DIFF, ...Configuration:
OUTPLEDLOCPC
COMM1COMM2
Control Inputs Trip and SignalsFunctions
MiCOM P631/632/633/634Transf. Differential Protection
HardwareHardware
P631 P632 P633 P634
Measuring inputs
Phase currents 2 x 3 2 x 3 3 x 3 4 x 3
Residual current or neutral-point current – 2 3 3
Voltage – 1 1 1
Binary inputs and outputs
Optical coupler inputs (per order) 4 4 to 10 4 to 16 4 to 10
Add. optical coupler inputs (optional) – 24 24 24
Output relays (per order) 8 to 14 8 to 22 8 to 30 8 to 22
Analogue inputs and outputs (optional)
0 to 20 mA input – 1 1 1
PT 100 input – 1 1 1
0 to 20 mA outputs – 2 2 2
MiCOM P631/632/633/634Transf. Differential ProtectionInputs and Outputs
GGC
GG
G
G
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
G
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
G
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
G
G
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
G
G
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
G
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
G
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
GGC
GG
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
G
G
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
P631
GGC
GG
G
TR IP
A LA R M
O U T O F S E R V IC E
H E A LTH Y
G
G
E D IT
= C LE A R
= E N TE R
= R E A D
C
MiCOM
P632 P633 P634
Screw Terminals for Pin Lugs
Screw Terminals for Ring Lugs
Models*
*Both Flush & Surface Mounted Case Designs available
40TE
84TE
P631 P632 P633 P634
Measuring inputs
Phase currents 2 x 3 2 x 3 3 x 3 4 x 3
Residual current or neutral-point current – 2 3 3
Voltage – 1 1 1
Binary inputs and outputs
Optical coupler inputs (per order) 4 4 to 10 4 to 16 4 to 10
Add. optical coupler inputs (optional) – 24 24 24
Output relays (per order) 8 to 14 8 to 22 8 to 30 8 to 22
Analogue inputs and outputs (optional)
0 to 20 mA input – 1 1 1
PT 100 input – 1 1 1
0 to 20 mA outputs – 2 2 2
Inputs and Outputs
Pow er Supply ModuleProcessor Module
Communication Module
Transformer Module
: O
ptio
n
P A
01 02 03 04 05 06 07 08 09 10
01 02 03 04 05 06 07 08 09 10
V
4*I8*O
X
6*O
X
Y
4*I
24*I
X
6*I8*O
T
4*J
T
4*J1*U
Analog I/O Module
Binary I/O Module
MODULAR
P630 Hardware - Example (1) Module Location Diagram for P632 in Case 40 TE (Pin Terminals)
P631 P632 P633 P634
Measuring inputs
Phase currents 2 x 3 2 x 3 3 x 3 4 x 3
Residual current or neutral-point current – 2 3 3
Voltage – 1 1 1
Binary inputs and outputs
Optical coupler inputs (per order) 4 4 to 10 4 to 16 4 to 10
Add. optical coupler inputs (optional) – 24 24 24
Output relays (per order) 8 to 14 8 to 22 8 to 30 8 to 22
Analogue inputs and outputs (optional)
0 to 20 mA input – 1 1 1
PT 100 input – 1 1 1
0 to 20 mA outputs – 2 2 2
P631 P632 P633 P634
Measuring inputs
Phase currents 2 x 3 2 x 3 3 x 3 4 x 3
Residual current or neutral-point current – 2 3 3
Voltage – 1 1 1
Binary inputs and outputs
Optical coupler inputs (per order) 4 4 to 10 4 to 16 4 to 10
Add. optical coupler inputs (optional) – 24 24 24
Output relays (per order) 8 to 14 8 to 22 8 to 30 8 to 22
Analogue inputs and outputs (optional)
0 to 20 mA input – 1 1 1
PT 100 input – 1 1 1
0 to 20 mA outputs – 2 2 2
Inputs and Outputs
P630 Hardware Example (2) Module Location Diagram for P633 in Case 84 TE (Pin Terminals)
: O
ptio
n
Processor Module
Communication Module
Transformer Module
Power Supply Module
Binary I/O Module
Analog I/O Module
01 02 03 04 05 06 07 08 09 10
01 02 03 04 05 06 07 08 09 10
11
11
12
12
13 14 15 16 17 18 19 20 21
13 14 15 16 17 18 19 20 21
P A T
4*J1*U
T
4*J
T
4*J
X
6*I8*O
X
6*I8*O
X
24*I
Y
4*I
V
4*I8*O
X
6*O
P630 Serial Interfaces
Front PC RS 232 serial interface for local comm. using MiCOM S1
Rear Ports:Optional 2 remote Comm. ports : either RS 485 interface-twisted copper wire connection ORFibre Optic interface - FO cable connector
An optional IRIG-B interface is available for time synchronisation
P630 Connections
Current transformer connections to be given in accordance with the standard terminal connection diagram indicated on the type identification label
Example: P634 -74991196-301-401-601-801
Diagram: P634.401
It is essential that the grounding configuration shown in the diagram be followed. If a connection is in opposition, this can be taken into account in the settings at:
P63X/Parameters/Function/Global/Main/Conn meas.circ. IP,a/b/c/d
P631 P632 P633 P634
Measuring inputs
Phase currents 2 x 3 2 x 3 3 x 3 4 x 3
Residual current or neutral-point current – 2 3 3
Voltage – 1 1 1
Binary inputs and outputs
Optical coupler inputs (per order) 4 4 to 10 4 to 16 4 to 10
Add. optical coupler inputs (optional) – 24 24 24
Output relays (per order) 8 to 14 8 to 22 8 to 30 8 to 22
Analogue inputs and outputs (optional)
0 to 20 mA input – 1 1 1
PT 100 input – 1 1 1
0 to 20 mA outputs – 2 2 2
MiCOM P631/632/633/634Transf. Differential ProtectionInputs and Outputs
GGC
GG
G
G
G
TRIPALARM
OUT OF SERVICE
HEALTHYEDIT
= CLEAR
= ENTER
= READ
C
MiCOM
Front Face
H5
H16H17
H1
H4
X6
LED interpretations 1
LED- “ALARM” :
Meaning : Internal fault detected OR Internal fault detected OR
Relay functioning hindrances like:Relay functioning hindrances like:
Calculated reference currents/matching factors Calculated reference currents/matching factors not not within permissible range or within permissible range or
amplitude matching factor conditions not amplitude matching factor conditions not satisfied satisfied
Action from operator: Read out the “Monitoring Signal Memory”
: P63X/Operations/Op.data.Rec./MT_RC
- Then clear the Mon. Signal Memory
- Try a Cold Restart (Full list of possible SFMON signals given in Guide, Chap. 10,
(Trouble shooting)
LED interpretations 2
LED- “OUT OF SERVICE” :
Meaning :
(1) Output relay has been blocked by user: (1) Output relay has been blocked by user:
Par/Func/Glob/OUTP/“Output.rel.block USER” “Yes”
(2) Device has been disabled by user: (2) Device has been disabled by user:
Par/Func/Glob/MAIN/ “Protection Enabled” “No”
(3) Trip command has been blocked by user: (3) Trip command has been blocked by user:
Par/Func/Glob/MAIN/ “Trip command block.USER” “Yes”
(4) SFMON has detected an internal fault: (4) SFMON has detected an internal fault:
( ALARM LED also lights up and output assigned to “Blocked/Faulty is energised )
Local Control Panel Operations
Following tasks can be handled from the LOC :
Readout and editing of settings
Readout of cyclically updated measured Operating data &
Logic state signals
Readout of operating data logs and monitoring signal logs
Readout of event logs and fault measured data after overload
situations and faults
Resetting of device and triggering of additional control
functions designed to support testing and commissioning
tasks
Local Control Panel Operations
To enter the EDIT mode :
(1) Activate the Global Change-enabling function: (1) Activate the Global Change-enabling function:
Oper/Cntrl&Test/LOC/“Par change enablePar change enable” “Yes”
(2) To activate the change, enter the passwordpassword
(3) For some functions, to edit the settings we need to disable the
device: : Par/Func/Glob/MAIN/ “Protection EnabledProtection Enabled” =“No”
Local Control PanelOperations
COLD RESTARTMany problems may occur (like Alarm LED) due to the fact that
the setting status of the device makes it difficult for the user to know what’s going on !
In such cases, perform a cold restart:
- This causes the device to reboot, all settings to revert to default values and all records to be cleared
- Prior to performing a cold restart, disable the protection:
P63X/Par/Func/Glob/MAIN/Protection Enabled = “No”
P63X/Oper/Ctrl&Test/MAIN/Cold Restart = “Execute”
Memory Readouts
The following memories are available:
Operating data memoryOperating data memory: Oper/Rec/OP_RC
- contains stored signals of actions that occur during operation such
as enabling or disabling of a function
Monitoring Signal memoryMonitoring Signal memory: Oper/Rec/MT_RC
- a signal entry due to internal fault detected by SFMON function or a setting configuration that hinders flawless functioning of the device
Event MemoryEvent Memory: Events/Rec/FT_RC : fault memories 1 to 8
Events/Rec/OL_RC : overload memories 1 to 8
Fault Logging, Fault Data Acquisition & Fault Recording Fault Measured Data (FT_DA):Fault Measured Data (FT_DA):
- - Fault duration
- Fault currents - phase and residual values of each winding
- Differential and restraining currents on all 3 phases
- Per unit Second and fifth harmonic levels of the differential current
- Maximum 8 records Fault Recorded Data (FT_RC)Fault Recorded Data (FT_RC) (Disturbance records):
- Phase currents of all four ends of the transformer
- - Residual current measured at the Neutral C.T.
- Voltage (1)
- Max 8 records, 16.4 sec. Fault Logging: Fault Logging:
- device stores protection signals logged during a fault
- Maximum 8 faults, 200 signals on each fault incident
Configuring & Enabling of Function Groups
In order to enable a function group (say Differential):
(1)ConfigureConfigure the desired function:
P63X/Par/Config/DIFF/Enable =Yes
(2)EnableEnable the desired function:
P63X/Par/Func/General/DIFF/General Enable.USER =Yes
(3)ActivateActivate the desired function in the parameter subset :
P63X/Par/Func/Par.Subset 1/DIFF/Enable =Yes
Some tips on configuring the Tripping Outputs
NOTE: Always use a “Trip command” for operating the trip coil
Procedure:
(1)ConfigureConfigure the trip command:
Example: P63X/Par/Func/Global/MAIN/Fct.assign.Trip.cmd.1=
#01 DIFF Trip signal OR #02 Manual Trip Signal
(2)Configure Configure the output relay:
Recommended: P63X/Par/Conf/OUTP/ Fct.assign.K2001 =
Gen.Trip command 1