Asset Management Data

The key data of the Transmission System Equipment are set out below, as they stood on 30/06/2022.

 

Installed Transmission Line Lengths (routing length):

TRANSMISSION LINES (km)

TYPE OF LINES

400 kV

DC 400 kV

150 kV

66 kV

TOTAL

OVERHEAD LINES

2.761,53

106,95

8.834,49

37,54

11.740,51

SUBMARINE CABLES

 

 

941,82

72,2

1.014,02

SUBMARINE CABLES (underground part)

 

 

28,1

2,8

30,90

UNDERGROUND LINES

31,45

 

373,27

 

404,71

TOTAL

2.792,98

106,95

10.177,68

112,54

13.190,15

 

Transformer and Switching Substations which contain IPTO assets:

SUBSTATIONS WITH IPTO ASSETS

TYPE

TRANSFORMER

SWITCHING

TOTAL SUBSTATION

HVC - SWITCHING (400KV)

18

4

22

STEP-DOWN - SWITCHING SUBSTATION (150/20KV & 66/20KV)

218

4

222

SUBSTATION OF HV CUSTOMERS - MINES

38

 

38

STEP-UP (PRODUCTION STATIONS)

30

1

31

STEP-UP RES PRODUCERS

80

 

80

AC/DC TRANSFORMATION

1

 

1

TOTAL

 

 

394

 

Transformers and Transforming capacity - IPTO Fixed assets:

TRANSFORMERS

TRANSFORMER TYPE

VOLTAGE (kV)

NUMBER OF TRANSFORMERS

MVA CAPACITY

AUTOTRANSFORMERS

400/150/30

62

16.940

AUTOTRANSFORMERS

150/66

1

50

CONVERTER STATION TRANSFORMER

400

1

597

STEP-DOWN TRANSFORMER

150/66

2

50

SVC TRANSFORMER

150/20

3

168

TOTAL   69 17.805

 

Transformers of Users Connected with the Transmission System:

TRANSFORMERS

TYPE

VOLTAGE (kV)

NUMBER OF TRANSFORMERS

MVA CAPACITY

USER

STEP-UP

(CONVENTIONAL PRODUCTION AND HYDROELECTRIC STATIONS)

400

18

7.106

PRODUCERS

150

79

7.215

STEP-UP RES PRODUCER

20

2

7

150

110

6.347

TOTAL   209 20.676  

STEP-DOWN

150/20

451

18.967

HEDNO

66/20

3

75

STEP-DOWN

150/20

5

212

PRODUCERS

STEP-DOWN AUXILIARY

150

21

966

STEP-DOWN

150/20

13

650

PPC / MINES

STEP-DOWN

150/MT

92

2.672

HV CUSTOMERS

TOTAL   585 23.542  
GENERAL TOTAL   794 44.217