Substation Architecture - GE P741 Technical Manual

Application Notes
MiCOM P741, P742, P743
First Cubicle:
P741
1 P742
3 P742
5 P742
7 P742
9 P742
11 P742
1 P741 and
12 P742
REVOLVING DOOR
FIGURE 27: 1 P741 AND P742 WITH P99X TEST BLOCK
First Cubicle:
P741
P99x
P99x
P99x
P99x
P99x
P99x
1 P741 and
6 P743 & 6 P99x
REVOLVING DOOR
FIGURE 28: 1 P741 AND P743 WITH (OR WITHOUT) P99X TEST BLOCK
7.6

Substation Architecture

Due to the flexibility of the differential busbar protection there is an infinite number of busbar
configurations that can be accommodated via the topology. Each may have very different
architecture and, therefore, vary in complexity.
You will find in the following pages topology examples of layouts most frequently
encountered. For each example, the number of central units and peripheral units necessary
to protect the busbars is specified.
Generally, the elements of the protection architecture will be identified in a similar manner to
the principal parts of the substation e.g. by the letters A and B.
Note:
In both cases, and before any delivery, the topology will be thoroughly tested on appropriate
test platforms the scheme is engineered by a GE competency centre).
Additional cubicle:
13 P742 P742
P742 2 15 P742 P742
P742 4 17 P742 P742
P742 6 19 P742 P742
P742 8 21 P742 P742
P742 10 23 P742 P742
P742 12 25 P742 P742
14 P742
REVOLVING DOOR
Additional cubicle:
P99x P743
P743 1 P99x P743
2
P743 P99x P743
P743 3 P99x P743
P743 4 P99x P743
P743 5 P99x P743
P743 6 P99x P743
7 P743 & 7 P99x
REVOLVING DOOR
A cubicle needs to be considered for a centralised solution whereas if
the peripheral units are distributed and the scheme is distributed there
is no requirement for a dedicated cubicle.
First Cubicle:
P741
14 1 P742 P742 2
16 3 P742 P742 4
18 5 P742 P742 6
20 7 P742 P742 8
22 9 P742 P742 10
24 11 P742 P742 12
26 13 P742 P742 14
1 P741 and
14 P742
FIXED FRAME
First Cubicle:
P741
7 P99x P743 1
8 P99x P743 2
9 3
P99x P743
10 P99x P743 4
11 P99x P743 5
12 P99x P743 6
13 P99x P743 7
1 P741 and
7 P743 & 7 P99x
FIXED FRAME
P74x/EN AP/Na7
(AP) 6-47
Additional cubicle:
15 P742 P742 16
17 P742 P742 18
19 P742 P742 20
21 P742 P742 22
23 P742 P742 24
25 P742 P742 26
27 P742 P742 28
14 P742
FIXED FRAME
Additional cubicle:
P99x P743 8
P99x P743 9
P99x P743 10
11
P99x P743
P99x P743 12
P99x P743 13
P99x P743 14
P99x P743 15
8 P743 & 8 P99x
FIXED FRAME
AP