digital extra high voltage substation with process bus

www.sprecher-automation.com

• Integration into a real 300 kV substation

• 300 kV distance protection with process bus

• Independent switchgear control unit (SCU)

• Mixed configuration with protection devices from Siemens and ABB on a process bus

• Standard-based time synchronisation with PTP

• Network redundancy via parallel redundancy protocol (PRP)

• Comprehensive security concept for fully digitised stations

AT A GLANCE

Schematic diagram: conventional wiring

Digital substation with process bus

DIGITAL EXTRA HIGH VOLTAGE SUBSTATION WITH PROCESS BUSSTATNETT SF

The digitisation of the process level or the implementation

of process bus technology for so-called “digital substations”

represents one of the most challenging paradigm shifts in

both protection technology and substation automation.

The transformation from hard-wired signals to the net-

work-based communication of measured values promises

many advantages, but also poses significant technological

hurdles that must be overcome. Together with the

Norwegian transport network operator Statnett SF, Sprecher

Automation GmbH has taken up this challenge within the

framework of a pilot project.

PROCESS BUS

The essentials of the conventional system are the necessa-

ry copper cables that must be routed between the switch-

board, outdoor cabinet and the primary components in order

to transmit the analogue signals and control commands. In

contrast, the station digitised by means of a process bus is

a simplified solution. Here, the stated components are not

connected by dedicated copper lines, but instead by a com-

mon network. This comparison reveals the potential benefits

that were explored in detail in the pilot project.

EXPENSESLess cooper cabling

Less space required for secondary systems

TIMEShorter downtime

Shorter commissioning & inspections

SAFETYNo process voltage in control center (FOC)

No risk of open current transducer circuits (NCIT)

COSTUMER EXPECTATIONS

© Sprecher Automation 2018

Sprecher Automation, the Sprecher Automation logo and any alternative version thereof are trademarks and service marks of Sprecher Automation. Other names mentioned, either registered or not, are the property of their respective companies.

Any liability regarding the correctness and completeness of information and/or specifications in the brochure is excluded.

All rights are reserved to alter specifications, make modifications, or terminate models without prior notice. The specifications of a model may vary from country to country.

August 2016 August 2017 September 2017December 2016

PROJECT REALISATION WITHIN A YEAR

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www.sprecher-automation.com

Sprecher Automation GmbH(Headquarters)

Franckstrasse 514020 Linz, Austria

T: +43 732 6908-0F: +43 732 6908-321

[email protected]

12.0.021.17en Z

PILOT PROJECT: 300 kV SUBSTATION

In order to be able to comprehensively assess the future of

digital substation automation, Statnett has decided to imple-

ment a pilot project that not only evaluates the process bus

technology per se, but also considers all practical aspects in

a two-year trial run, starting with economic aspects and in-

teroperability through to technical feasibility and technology

readiness. The goal was to implement within a year, together

with Sprecher Automation, a substation automation system

based on a process bus and non-conventional converters,

which will be put into operation in a real 300 kV substation in

parallel with the existing control and protection technology.

digital extra high voltage substation with process bus

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