AmpaCity Project Update 40 MVA HTS Cable and Fault Current ...

AmpaCity Project Update

40 MVA HTS Cable and Fault Current

Limiter Installation in City Center

Mark Stemmle, Kai Allweins, Frank Merschel, Mathias Noe, Achim Hobl

IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) October 2014 Invited Presentation 4LOr3B-01 given at ASC 2014, Charlotte, August 10 – 15, 2014.

2

AmpaCity Project Objectives

> Installation of 10 kV, 40 MVA HTS system in the German City of Essen

• Project started in September 2011

• Complete system installation in 3rd quarter of 2013

• Commissioning in 4th quarter of 2013

• Project duration of 4.5 years

• Funded by the German Federal Ministry of Economics and Technology

> Investigation of technical feasibility of HTS systems in distribution grids

> Investment comparison of 10 kV HTS systems as alternative to conventional 110 kV systems

> Evaluation of technical operation advantages during demonstration period

> Assessment of further HTS cable and FCL technology applications


3

Project start in September 2011

Groundbreaking ceremony on April 9th, 2013

Start of component manufacturing in March 2013

Type test completed in February 2013

Prototype manufactured in October 2012

System installation on site Sept. until Dec. 2013

Pilot operation from 2014 until 2016 in progress

Commissioning test on December 16th, 2013

System commissioning on March 10th, 2014

AmpaCity Milestones


4

Prototype Setup for Type Test


5

Prototype Joint and Termination


6

Type Test Sequence Prototype Setup

> Testing in accordance to DIN VDE 0276-620

> PD test at 20 kV (after 24 kV for 1 min)

> 20 load cycles with 2.3 kA (3 phase)

> PD test at 20 kV (after 24 kV for 1 min)

> Lightning impulse test at ± 75 kV

> AC voltage withstand test at 30 kV (4 h)


7

Load Cycle Test Setup


8

Lightning Impulse Test Setup


9

AmpaCity Installation in Essen

Luftbild: "Darstellung aus HK Luftbilder / Karten Lizenz Nr. 197 / 2012 mit Genehmigung

vom Amt für Geoinformation, Vermessung und Kataster der Stadt Essen vom 13.02.2012"

Substation Dellbrügge

Cable Joint

Substation Herkules


10

Loading of Cable Drum in Hannover


11

Cable Drum Trailer at Joint Bay


12

Preparation of Cable Pulling


13

Cable Pulling First Length


14

Installation in Substation Dellbrügge


15

Termination in Substation Dellbrügge


16

Installation of Cable Joint


17

Nitrogen Storage Tank at Substation Herkules


18

Cooling System Delivery at Substation Herkules


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Fault Current Limiter Delivery at Substation Herkules


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HTS System Installation at Substation Herkules


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Cooling Down of Cable System December 2013


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Temperatures During Cooling Down

60

80

100

120

140

160

180

200

220

240

260

280

300

320

02.12.2013 03.12.2013 04.12.2013 05.12.2013 06.12.2013 07.12.2013

Tem

per

atu

re i

n K

Temperature Inlet Substation HerkulesTemperature Outlet Substation HerkulesTemperature Substation Dellbrügge


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Commissioning Test

> Standard cable testing with cable test van

> PD test of each phase (20 kV at 0,1 Hz)

> Loss factor diagnoses (10 kV, 15 kV, 20 kV at 0,1 Hz)

> AC voltage withstand test (30 kV at 0,1 Hz for 1 h)


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Commissioning Test with Cable Test Van


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System Commissioning in March 2014

> Voltage test with HTS system connection only in substation Herkules

> Current testing with reactive power transfer between two transformers

> System connection in both substation for test operation in the grid


26

Cooling System

pressure

build-up

HTS cable

vacuum

pump

circulation

pump

SFCL

LN2 storage

tank

sub

cooler

> 4 kW cold power at 67 K > Subcooled pressurized nitrogen > Forced flow in closed circuit > High availability and reliability


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Inlet and Outlet Temperatures

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

27

.07

.

28

.07

.

29

.07

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30

.07

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31

.07

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01

.08

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.08

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03

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04

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05

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06

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08

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09

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10

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11

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12

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13

.08

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Tem

per

atu

re i

n K

Temperature Inlet Substation Herkules Temperature Outlet Substation Herkules Temperature Substation Dellbrügge

dT = ±0.135 K, Tmax = 68.11 K, Tmin = 67.84 K

dT = ±0.06 K, Tmax = 70.11 K, Tmin = 69.98 K

dT = ±0.24 K, Tmax = 77.45 K, Tmin = 76.97 K


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Inlet and Outlet Pressures

4

5

6

7

8

9

10

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Pre

ssu

re i

n b

ar Pressure Inlet Substation Herkules Pressure Outlet Substation Herkules Pressure Substation Dellbrügge

dP = ±0.08 bar, Pmax = 8.71 bar, Pmin = 7.91 bar



Refillof LN2

Refillof LN2


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Mass Flow

400

405

410

415

420

425

430

435

440

445

4502

7.0

7.

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Mas

s-fl

ow

in

g/s

Mass-flow (dm/dt)

dF = ±6.4 g/s, Fmax = 430.2 g/s, Fmin = 417.5 g/s


30

System Losses

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

25002

7.0

7.

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Loss

es i

n W

Total Losses ((Tout-Tin)∙cp∙dm/dt)

dQ = ±147 W, Qmax = 1940 W, Qmin = 1646 W


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LN2 Level Storage Tank

0

5

10

15

20

25

30

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40

45

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1002

7.0

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Filli

ng

Leve

l in

%

Filling Level LN2 Storage Tank

22.8 tons


32

System Loading

0

1

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5

6

7

0

25

50

75

100

125

150

175

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225

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275

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425

450

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Cu

rren

t in

ACurrent & Voltage

SUN SUNSAT

Vo

ltag

e in

kV

SUNSAT


33

Conclusions

> Type test of Ampacity system was successfully completed

> All system components were manufactured

> System installation was realized in less than 3 month

> HTS System was successfully commissioned

> AmpaCity HTS System is in operation


Thank you very much for your attention

Dr. Mark Stemmle Nexans Deutschland GmbH Kabelkamp 20 30179 Hannover [email protected]


mailto:[email protected]

mailto:[email protected]

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AmpaCity Project Update 40 MVA HTS Cable and Fault Current ...

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