Power System Protection And Control In One Solution

ABB’s Relion 670 has been evolved to Version 2.0 offering flexibility, performance and ease of use.
Published: Fri 11 Sep 2015

Functionality, flexibility, performance and most importantly future-proofing are key features for protection and control in power system applications, says Lars Frisk, Global Product Manager, Bay Level Products at ABB.

In an Engerati webinar, ABB Relion® 670 Version 2 – The power of one solution for protection and control, Lars Frisk gives a detailed overview of this evolution covering both hardware and software, which is based on more than 10 years of user experience in the field.

Relion 670 product series

The flagship of the Relion product series, the Relion 670 intelligent electronic devices (IEDs) provide a range of protection, control, measurement and supervision applications, based on the IEC 61850 standard for substation automation. These include:

• REB670 –  Busbar protection

• REC670 – Bay control

• RED670 – Line differential protection

• REG670 – Generator protection

• REL670 – Line distance protection

• RES670 – Phasor measurement unit (PMU) / Wide area protection

• RET670 – Transformer protection.

“Using the Relion 670 series IEDs you will have a complete solution for all your protection and control applications,” says Lars Frisk . “For Version 2, we have retained all the proven-in-use application functions, but also added unique new functions that create additional customer value.”

Interoperability with IEC 61850 Edition 2

Commonalities of the series extend across both hardware and software, with ease of use a key consideration.

A key feature of the full Relion series is its implementation of the core values of the IEC 61850 standard. Relion 670 Version 2 incorporates IEC 61850 Edition 2 with backwards compatibility with IEC 61850 Edition 1, which ensures both interoperability with the existing installed base and future-proofing for new installations. This is achieved easily with a change of setting in the IED. This implementation, which covers new logical node types, is supported with certification by KEMA.

“Usually when IEDs are purchased it isn’t known where they will be used, and user configuration avoids the need for a factory intervention,” explains Lars Frisk.

Cyber security hardening

A second key area of focus with 670 Version 2 has been the growing issue of security, resulting in a significant system hardening.

“We have aimed to make the solutions as secure as possible,” says Lars Frisk, citing new functionalities to handle intrusions, secure communication and access protocols, user activity logging and a virtual keyboard.

Application of Relion 670 IEDs

As an example of a Relion 670 IEDs deployment, Lars Frisk mentions the Loganlea substation upgrade for PowerLink in southeast Queensland in Australia. This was also ABB’s first commercial substation automation system using IEC 61850-9-2 process bus technology, with the main functions including control, line distance protection, line differential protection, transformer differential protection and breaker failure protection.

In practice the greatest number of applications is for line distance protection and transformer protection in terms of the traditional application areas. However, new application areas are also emerging, such as subsynchronous resonance protection, which is typical for wind farms.

Lars Frisk adds that the need for PMU protection is also expected to become more widespread in the future power system.

To learn more about the Relion 670 Version 2 solution, register for the webinar.

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