Most low-voltage distribution networks are still monitored at a single point: the transformer. While this provides an overall view of performance, it does not reflect what happens across individual feeders. As networks evolve with distributed energy resources and changing load patterns, understanding feeder-level behavior becomes increasingly important for reliable operation.
This raises a practical question: how can monitoring be extended from the substation to the feeder within the constraints of existing infrastructure?
The Real Constraint: Visibility Without Disruption
For most DSOs, the barrier to improving visibility is not intent, but the operational reality of the assets involved. Distribution networks are live, physically constrained, and rarely uniform from one site to another.
In practice, extending monitoring must work within a consistent set of constraints:
- Limited access to measurement points inside existing cabinets and substations.
- Space restrictions, especially in older or densely equipped installations.
- No tolerance for service interruption, where upgrades cannot compromise supply continuity.
- Heterogeneous infrastructure, where each site presents different conditions.
Any monitoring approach that does not address these constraints is unlikely to be deployed at scale.
Distributed Monitoring: Measuring at the Feeder Level
The shift that enables feeder- level visibility is architectural, not just technological.centralized measurement point to a distributed monitoring architecture, where data acquisition is placed closer to where electrical behavior occurs.
Rather than inferring feeder conditions from transformer-level data, this approach measures them directly. The result is a network view built from the ground up, instead of extrapolated from a single point.
This is the role of 2Grid CommPack GMX and 2Grid Bridge when deployed together.
Distributed monitoring architecture: feeder-level measurement with GMX and data transmission
via Bridge to central systems
This architecture is implemented through 2Grid CommPack GMX and 2Grid Bridge.
Measurement at the edge: 2Grid CommPack GMX
2Grid CommPack GMX captures electrical parameters directly within LV and MV environments, such as distribution cabinets, secondary substations, or industrial installations, without requiring disconnection or structural changes to the existing setup.
Installed at the point where the measurement matters, it supports:
- Continuous load monitoring across individual feeders.
- Detection of imbalances and irregular behavior as they emerge.
- Analysis of network performance and trends over time.
Communication at scale: 2Grid Bridge
Measurement alone does not provide visibility. Data must reach the systems where it can be used. 2Grid Bridge provides the communication layer, aggregating and transmitting field data reliably to SCADA systems or cloud- based platforms, and doing so across multiple feeders and sites without adding operational complexity.
Together, 2Grid CommPack GMX and 2Grid Bridge form a monitoring architecture that:
- Operates within existing infrastructure, without redesign.
- Preserves service continuity, with no disconnection required.
- Scales up to 18 feeders per substation, and across multiple sites.
2Grid CommPack GMX and Bridge architecture with non-intrusive current measurement using
magnetic flex Rogowski coil sensors
What Feeder-Level Visibility Actually Changes
The value of this shift lies not in additional data, but in what it enables operationally. Moving from transformer-level monitoring to feeder-level visibility supports:
- Better-informed decision-making, based on how load is actually distributed.
- Earlier detection of issues, before they escalate into operational problems.
- More effective planning and maintenance, focused where it is needed.
- Reduced operational risk, through continuous rather than periodic visibility.
Deployed Where It Matters: Real Network Environments
This architecture is already deployed in operational networks, including:
- Secondary substations, where feeder-level detail is often limited.
- Low-voltage distribution cabinets, typically constrained and difficult to instrument.
- Industrial electrical installations, where load behavior can change rapidly.
In all cases, monitoring must adapt to the site, not the other way around, while maintaining continuous operation.
Visibility as an Operational Requirement
As LV and MV networks continue to evolve, the question for DSOs is no longer whether more visibility is useful, it’show to get it without disrupting the infrastructure already in place.
Extending monitoring from the transformer to the feeder isn’t about accumulating more data for its own sake. It’s about capturing the right data, at the right points, to support more reliable, better-informed grid operations over time.
This approach is reflected in the 2Grid CommPack GMX + Bridge architecture: a scalable monitoring solution that extends visibility without requiring infrastructure redesign.
Further details on deployment and integration can be explored based on specific network requirements. Get in touch with our team to talk through your substation needs.