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GE SFC For rail electrification FEATURES

BENEFITS & FEATURES

• Avoid unbalanced grid loads and resulting penalties to grid operators

• Provide reactive power control on grid and traction networks

• Increase of efficiency e.g. by reduced power consumption in railway system

• Reduce complexity for rail operator by eliminating the neutral section in overhead

catenary lines

• Flexibility to connect rail grid to power grids of different providers and to grids of reduced

voltage or short-circuit capacity

• Facilitate management of brake energy by sending back braking energy from catenary

to the grid

• Increase distance between substations

An SFC provides multiple features, including independent reactive power control for both grids

and the capability to supply the railway from a weak three-phase grid with low short circuit

power, ensuring perfect voltage balancing between phases.

It synchronizes the SFC along the line using the Phasor Management Unit (PMU), such as the

GE Vernova Multilin N60. which assists in balancing power across substations. The system is

protected by protection and control relays like the GE Vernova Multilin Agile. Additionally, it

supervises and manages the entire traction power supply to optimize availability. Faults along the

line are located using Travel Wave Form Localization (TWFL) technology, enabling faster recovery

of line supply.

GE SFC permits to decouple frequency 

SFC permits to decouple frequency and phase between

the catenary and the grid connections, enabling to

remove neutral sections along the catenary.

As reducing carbon emissions becomes a more pressing issue,

populations are looking for a way to reduce their travel emissions.

Electric railways are recognized as the optimal solution due to their

superior energy efficiency, reduced emissions, and lower operating costs.

This trend is supported by public investments as the rail operators need to increase

power capacity, pushing to upgrade old 3 kV DC distribution networks to 25 kV AC.

In certain countries, the single-phase railway network historically operates at a

frequency distinct from that of the public grid, rendering direct connections between the

two networks unfeasible and requiring frequency conversion.

In contemporary applications, Static Frequency Converters (SFCs) are employed when

the power capacity of the grid network serving the rail line is constrained or the cost and time

to bring a high voltage powerful grid network is prohibitive.

Additionally, some new rail line projects are integrating SFCs for enhanced system optimization.

GE Static frequency converter For rail electrification

Power Conversion & Storage solution to help otimize power connections and stabilize catenary power

distribution.

Operators are increasing voltage from 3 kV to 25 kV to increase line capacity and reduce substation

counts.

A Static Frequency Converters (SFC) is an enabler of this transition,

particularly where the network grid capacity is limited.

Helping to connect to lower voltage connection to the grid, saving costs and deployment time.

To balance high renewable energy penetration in grid energy mix,

for greenfield projects (newly created lines), SFC substations can help ensure excellent

power quality from the grid, balance power between substations to avoid localized peaks,

facilitate power exchange between trains, and increase distance between substations,

reducing costs to connect to the transmission network.

SFC permits to decouple frequency and phase between

the catenary and the grid connections, enabling to

remove neutral sections along the catenary.

As reducing carbon emissions becomes a more pressing issue,

populations are looking for a way to reduce their travel emissions.

ABB’s Excitation Systems Installed Base Management

Installed Base Management

The excitation service portfolio is designed to increase your

return on investment and keep your UNITROL®, SYNCHROTACT®

and MEGATROL® products operating at the highest efficiency

and productivity level throughout their respective product life

cycles. Our experienced and dedicated service team is ready to

provide service throughout Canada and the United States.

Certifications

As part of our commitment to the environment, the Excitation

Systems Center of Excellence for North America is located in a

state-of-the-art building that is Silver LEED certified. The

Center of Excellence is also ISO 9001:2015 certified for design,

project management, manufacturing, testing and servicing,

ISO 14001:2015 certified for environmental standards as well

as ISO 45001:2018 certified for Health and Safety standards

and have been for over 20 years. All Excitation Systems and

products manufactured at our facility undergo rigorous testing and are UL and CSA certified.

ABB’s UNITROL® Full range of Excitation Systems

Full range of Excitation Systems

ABB’s UNITROL® excitation systems are constantly pushing the

limits of functionality, reliability, and quality using our state-of

the-art technology. We are able to offer seamless integration to

all power plants with any type of motor or generator.

24/7/365 Customer Support

ABB offers professional product support for all types of

systems. ABB has a service support network unmatched by our

competition, with services such as: site engineering,

equipment retrofits and control upgrades, installation and

commissioning, preventive maintenance, consultation, spare

parts management as well as customer training.

ABB-certified expert training

Knowledge is power. ABB offers expert-level trainings by

experienced ABB-certified trainers. These sessions are

specifically focused on maximizing the operating and

maintenance know-how of operators and technical personnel.

Operation and Maintenance training, e-learning, standard or

tailored classroom courses are all offered at one of our

training centers or on-site.

ABB’s Excitation Systems Center of Excellence, North America

ABB’s Excitation Systems

Center of Excellence, North America

The Excitation Systems Center of Excellence in North America is

part of ABB’s Industrial Automation, Energy Industries division.

ABB can help your company maintain its competitive edge

through the latest technology and optimized process concepts.

ABB Excitation Systems

From concept-to-commissioning, the Excitation Systems team

works together under one roof to manufacture and deliver

reliable excitation systems as well as timely and professional

after-sales services. ABB has a vast installed base across North

America, with over 1.800 units in operation (over 10.000 units

worldwide). ABB’s Excitation Systems service team is ready for

emergency travel and dedicated engineers are available

24/7/365 through the 1-800 technical support service hotline.

ABB SYNCHROTACT® 6 the world’s most popular synchronizer Key benefits

Key benefits

• Keeps assets productive at the highest levels of safety,

redundancy and availability

• Up to 20 different circuit breakers can be synchronized by

one SYNCHROTACT 6 unit

• All hardware and software is housed in a single unit

• Proven technology and reliable components

• Backwardly compatible with previous SYNCHROTACT

generations for easy and cost-effective retrofits

The number of parameter sets has been increased from 7 to

20. enabling up to 20 different circuit breakers to be

synchronized by a single SYNCHROTRACT 6 device. Compliant

with the IEC 61850 Ed. 2 international communication

standard, SYNCHROTACT 6 fulfills the most demanding

requirements and offers a choice between an electrical or

optical interface.

ABB SYNCHROTACT 6 Diverse dual channel design

Diverse dual channel design

SYNCHROTACT 6 is the only synchronizer to have a diverse

dual channel design – if one channel should fail, the other

prevents the circuit breaker from closing under non

synchronous conditions. Both channels are in the same

SYNCHROTACT unit to minimize wiring, ensure perfect

working compatibility and reduce commissioning and

engineering costs.

The number of parameter sets has been increased from 7 to

20. enabling up to 20 different circuit breakers to be

synchronized by a single SYNCHROTRACT 6 device. Compliant

with the IEC 61850 Ed. 2 international communication

standard, SYNCHROTACT 6 fulfills the most demanding

requirements and offers a choice between an electrical or

optical interface.

The unit’s robust design is in accordance with the IEC 61508

SIL2 safety integrity level and IEC 60255-26. IEC 60255-27 and

ANSI/IEEE C37.90 product standards.

ABB Four functionalities that bring the generator safely online

Four functionalities that bring the generator safely online

SYNCHROTACT 6 automatically synchronizes the generators

with the grid. It does this through four key functionalities:

• Measures – it measures key variables to ensure generator

and grid voltage and frequency are synchronous

• Matches – if voltage and frequency are not synchronous, it

automatically matches the two by adjusting the generator

voltage and frequency

• Monitors – it monitors the operating conditions to ensure

the voltage and frequency are synchronous before closing

the circuit breaker

• Command generation – as soon as voltage and frequency

are synchronous a command is sent to close the circuit breaker

ABB SYNCHROTACT® 6 the world’s most popular synchronizer

SYNCHROTACT® 6

the world’s most popular synchronizer

SYNCHROTACT 6 is part of ABB’s offering of excitation products and

synchronizing equipment for the power generation industry. The portfolio is the

most comprehensive and proven on the market, extending from the smallest to

the largest power requirements and covering all power generation applications.

Why is SYNCHROTACT 6 important?

Power plants and substations contain many valuable

components, essential to the reliable delivery of electricity

from the power plant to the transmission grid.

SYNCHROTACT 6 protects these assets from the damaging and

dangerous effects of paralleling in non-synchronous conditions.

It automatically synchronizes and parallels the generators with

the power lines to keep the energy flowing, the equipment

productive and people safe; and it does so at the lowest

possible total cost of ownership over a long life cycle.

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