© ABB GroupNovember 27, 2015 | Slide 1

Current developments inHigh-voltage switchgearSome examples

Dr. Walter Holaus, Global Product Manager, ABB Switzerland. 25.11.2015

SF6 free high-voltage GIS installation in Zürich, CH.

© ABB GroupNovember 27, 2015 | Slide 2

Different types of high-voltage switchgearGIS – Hybrid – PASS – DTB - LTB

GIS Hybrid PASS DTB

• all voltage levels• all components encapsulated• most compact

• busbar in air• include DS, ES, CT • busbar in air

• focus on USA market• complete shipment• no FAES, DS, ES

LTB • all voltage levels• no grounded enclosures

© ABB GroupNovember 27, 2015 | Slide 3

Current developments in high-voltage switchgear

§ Lower environmental impact over lifetime

§ PD sensor optimization using powerful simulations

§ Pulsed X-ray Induced Partial Discharge Measurement forroutine testing

§ Multi-functional modules: A substation on a trailer

§ Motor drive to operate HV circuit breakers

§ Products for new voltage levels

§ SF6 replacement with alternative gases

Examples by ABB

© ABB GroupNovember 27, 2015 | Slide 4

Design for lower environmental impact over lifecycleExample: 420 kV GIS

© ABB GroupNovember 27, 2015 | Slide 5

Optimization of PD sensors

§ PD sensors are used to measure & monitorPD activity inside a GIS

§ Shape and design of the sensor determinesthe output signal

§ Optimization improves sensor voltageoutput over a wide frequency range

Electromagnetic simulations

0 1 2 3 4 5 6 7 8 9 10

x 108

-70

-65

-60

-55

-50

-45

-40

-35

-30Model 3Model 4Model 5Model 6Model 7

Frequency (Hz)

Sen

sorv

olta

ge(d

B)

Model 7

PD sensor Optimized model

From: Smajic, Elektromagnetische Analyse und Optimierung des neuen TE-Sensors, Rapperswil, 19 Dezember 2013.

© ABB GroupNovember 27, 2015 | Slide 6

Pulsed X-ray Induced Partial Discharge (PXIPD)High voltage pre-testing of insulators

§ Automated test facility for spacers

§ Checks for “invisible” voids inside the insulationmaterial that may create failures during lifetimeof a GIS.

§ Cycle time < 7 min / insulator.

HV-transformer

PXIPD insulationpretesting

LifetimeD

iele

ctric

stre

ss

IEC test voltage

Fina

lDie

lect

ricTe

st Comparison of HVtest methods

© ABB GroupNovember 27, 2015 | Slide 7

Multi-functional modules245kV substation on a single trailer

§ MV – Transformer – HV: Assembled and tested in factory.

§ Designed for easy transportation and installation

§ A solution for rapid or temporary electricity distribution

© ABB GroupNovember 27, 2015 | Slide 8

Motor drive for HV products

§ Motor with digitally controlled motion to operate HV circuit breakers.

§ Smart Human-Machine Interface (HMI) to visualize:§ Single Line Diagrams, System status, operation counter, temperature, ..

§ Compact motor size. Scalable energy storage up to 4 kJ

§ Simple configuration and data upload§ Configurable interlocking function

§ Torque limitation

§ Available for LTB and PASS products§ SPO and TPO: 72.5 kV - 245 kV

§ Digital interfaces:§ IEC 61850-8-1 (MMS)§ IEC 61850-9-2 (GOOSE)

A smart drive, IEC 6150 enabled

© ABB GroupNovember 27, 2015 | Slide 9

Products for new voltage levels

§ Ultra-high voltage applications requested for “super grids”

§ 800 kV network is rapidly expanding in china, india

§ 1100 kV network is rapidly expanding in china

§ 1200 kV network is under site testing in india

Rated voltage: 800 kV, 1100 kV, 1200 kV

© ABB GroupNovember 27, 2015 | Slide 91100kV substation “Jingmen”, China. Commercial operation since 2009

© ABB GroupNovember 27, 2015 | Slide 10

Modeling & simulation of very fast transients GISExample: Disconnector switching @1100 kV

See: J. Smajic, W. Holaus, J. Kostovic, U. Riechert, “3D Full-Maxwell Simulations of Very FastTransients in GIS”, IEEE Transactions on Magnetics, Vol. 47, No. 5, pp. 1514-1517, May 2011.

© ABB GroupNovember 27, 2015 | Slide 11

1200 kV DTB for Powergrid, IndiaBINA substation. Energized 2014.§ One phase DTB for test installation at

BINA 1200 kV SS§ Assembly and routine tested in ABB India§ PD sensors to allow PD measurement

and localization§ Installation done for CIGRE UHV

conference 2013

© ABB GroupNovember 27, 2015 | Slide 12

Main characteristics

Rated voltage 145 kV

Rated frequency 50 Hz

Rated short-circuit current 31.5 kA

Capacitive switching factor 1.4

Rated current 3150 A

Ambient temperature -50 °C

Tested according to IEC 62271-100

SF6 free circuit breaker 145 kV, 31.5 kA

§ Product release for reduced ratings

§ 72.5/84 kV, 31.5kA, -50°C, LTB+DCB, CO2

§ Pilot installation with CO2 gas

§ Ratings:

Pilot installation since 2010