Field Test Experience

ICC SPRING 2017 F11W

Nigel Hampton, NEETRAC

Mark Fenger, Prysmian

1

Consideration of test

voltage results from

CIGRE B1.28

Field Test Experience

ICC SPRING 2017 F11W

ON-SITE PD ASSESSMENT OF

EXTRUDED HV & EHV CABLE SYSTEMS

CIGRE B1.28

2

M. Fenger, Convener (CA),

R. N. Hampton, Secretary (USA),

H. Blandine/Q. de clerk (BE), N. De Louredo* (BR), R. J.

Densley (CA), F. Cochet (CH), Xuyang (CN), R. Plath (DE) J.

Z. Hansen (DK), X. Balza (ES) B. Dhuiq (FR); M. Totsi/L.

Testa*/G.C. Montanari (IT), M. Nishiuchi* (JP), R. Colon*

(MX) E Pultrum (NL); A. Rakowska (PL)' M. L. Sjoberg (SE),

M. Mashikian/S. Ziegler (USA), A. Barclay (UK);

Field Test Experience

ICC SPRING 2017 F11W

Year20

0820

0720

0620

0520

0420

0320

0220

0120

0019

9919

9819

9719

9619

9519

9419

9319

9219

9119

90

80

70

60

50

40

30

20

10

0

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

1996

1995

1994

1993

1992

1991

1990

EHV

Nu

mb

er

of

Te

sts

HVNO

YES

PD Test

Relative number of tests

green shows voltage only tests– from draft B1.28 brochure

3

Field Test Experience

ICC SPRING 2017 F11W

Overall Voltage Picture

4

2.9%Uo

97.1%>Uo

A subset of this 97%

>Uo has information

on:

• voltage level,

• test time,

• length and

• test outcome

Field Test Experience

ICC SPRING 2017 F11W

Disbursement of Tests by Voltage

5

Cumulative Distribution

Field Test Experience

ICC SPRING 2017 F11W

How often do things fail on voltage test

6

Failu

res o

n T

est [%

]

Field Test Experience

ICC SPRING 2017 F11W

How often do things show PD on test

– from draft B1.28 brochure

7

2.001.751.501.251.000.750.50

100

80

60

40

20

0

PD Inception Voltage (Uo)

Pe

rce

nt

1 1.4 1.7

41 1.4

54

1.7

19

Field Test Experience

ICC SPRING 2017 F11W

How long do we have to wait for PD on test

– from draft B1.28 brochure

8

6050403020100

100

80

60

40

20

0

PD Inception Time at 1.7Uo (Mins)

Pe

rce

nt