Case Study ® ABB 2024
Helen Electricity Network
Utilities
Digital switchgear solution ensures reliable power in Helsinki's smart city district
UniGear Digital with Relion protection relays
Finland
Challenge

In a smart city, the importance of electricity is amplified and constantly increasing, and even short power cuts are more damaging. For the local utility, Helen, the new district brings about the need to introduce smart and reliability-improving solutions for electricity distribution.

In city networks it is crucial that faults are located quickly and accurately to avoid costly power outages.

Solution

To meet the high demands the smart city district is putting on electricity distribution, ABB's innovative medium-voltage switchgear solution UniGear Digital. 

Outcome

-Fast and precise actions in case of network failures possible with the permanent active supervision feature of IEC 61850 digital communication.

- Improved reliability and functionality of the power system with IEC 61850-9-2 sampled values (process bus), which is used for distribution of voltage measurements.

- Accurate measurements and easy data management in the power system thanks to sensor technology.

- Reduced cost and minimized footprint as no separate voltage transformer measuring bays are needed.

Finnish utility Helen Electricity Network relies on UniGear Digital, a medium-voltage switchgear solution with Relion protection relays and sensors, to make their grid smarter and more reliable.

Improved reliability and functionality of the power system
Fast and precise actions in case of network failures