321635.CIGRE_WG_A306_Rio_2008

CIGRE WG A3.06 Reliability of High Voltage Equipment CIRCUIT BREAKERS Preliminary results

CIGRE WG A3.06 Reliability of High Voltage Equipment

Preliminary Results

Circuit Breakers …

1

CIGRE WG A3.06 Reliability of High Voltage Equipment CIRCUIT BREAKERS Preliminary results

„First“ High Voltage Circuit Breaker 1847

2

CIGRE WG A3.06 Reliability of High Voltage Equipment CIRCUIT BREAKERS Preliminary results

. . . . ? y t i il b a i l e R g n i d r a g e r s s e g o r P High Voltage Circuit Breakers / Modern Design

3

CIGRE WG A3.06 Reliability of High Voltage Equipment CIRCUIT BREAKERS Preliminary results

2004 : 3rd survey on CB reliability Population card Population card Circuit breaker year number kind Population card 3 4 5

6 6 7number 8 kind 9 Circuit5 breaker year 2 7 66 37 1 3 Circuit 5 breaker 69 year 8 9 2 8 9number 4 kind 4 32 4 2 7 5 69 66 37 1 8 9 5 4 2 4 2 72 8 9 9 6 34 1 5 2 4 2 8 9 4 Circuit breaker year number kind 3 5 6 6 7 8 9

Population Card

Population data 1 x per year Failure data 1 x per event • major • minor

Failure Card Failure Card Failure Card Circuit breaker year number kind Failure Card avdfs 123462 Circuit breaker year number kind Bvchhgdtefvs ja 123462 Card Failure avdfs Circuit breaker year number kind Nvcbhdfgfeter no 20037

Failure Card

Bvchhgdtefvs ja 123462 avdfs Circuit breaker year number kind Nvcbhdfgfeter no 20037 ja 123462 avdfs BvvcgdfBvchhgdtefvs bcvnndghfteuz Circuit breaker year number kind Nvcbhdfgfeter no 20037 ja 123462 Cvbcvd 20873 avdfs bcvnndghfteuz BvvcgdfBvchhgdtefvs Nvcbhdfgfeter no 20037 Nbbmvnnnnv ja ja Cvbcvd 20873 BvvcgdfBvchhgdtefvs bcvnndghfteuz bcvnndghfteuz Nbbmvnnnnv ja Nbbmvnnnnv Cvbcvd 20873 ja Bvvcgdf bcvnndghfteuz Nbbmvnnnnv ja Cvbcvd 20873 Nbbmvnnnnv ja

Only SF6 single preassure technology !

4

CIGRE WG A3.06 Reliability of High Voltage Equipment CIRCUIT BREAKERS Preliminary results

Old Survey

Po da pu ta la tio n

19881988-91

70.708 CB years Survey lasts 4years:

New Survey

17.677 CB / year 22 countries 41.959 CB / 2004 21 countries 5

CIGRE WG A3.06 Reliability of High Voltage Equipment CIRCUIT BREAKERS Preliminary results Po da pu ta la tio n

voltage distribution Old survey

300 ≤ V < 500 14%

500 ≤ V < 700 3%

63 ≤ V < 100 35%

200 ≤ V < 300 15%

100 ≤ V < 200 33%

voltage distribution 2004 New survey

700 ≤ V 0%

300