Maturity status | Stable |
This article explains load management for clusters in the gridX Energy Management System (EMS) and how to configure it in the XENON Dashboard.
What is load management for clusters?
The load management for clusters manages power distribution across sites with cascaded fuse topologies — where EV charging stations (EVCS) are connected behind multiple subfuses, each with its own power limit. The EMS ensures that none of the configured cluster limits are exceeded at any level of the electrical distribution hierarchy.
Clusters are used to define the sub-distributions they protect. Each cluster maps to one level of the fuse hierarchy and can be configured independently as Dynamic Load Management (DLM) or Static Load Management (SLM).
Example of a multiple cluster system
How does the load management for clusters work?
The algorithm traverses the cluster hierarchy depth-first, starting from the root cluster (GCP), then processes each child cluster recursively before returning to the root. Power is distributed within each cluster using the same balanced charging strategy as standard load management, ensuring no cluster limit is breached.
Each cluster can be configured independently as DLM or SLM — any combination is supported. Clusters can also be nested within other clusters to reflect multi-level fuse hierarchies.
How do I configure load management for clusters in XENON?
In XENON, go to the Cluster Configuration tab at the site level
Click Add Cluster — start from the highest level (closest to the GCP) and work downward
For each cluster, assign a name and parent cluster
For DLM clusters, assign the correct cluster meter to the cluster
Set the cluster import limit to the threshold value of the installed fuse
Click Actions > Add EVCS to assign EVCS to each cluster
After clusters are created, they appear as tiles in the Live Charging Status tab. EVCS not assigned to any cluster appear in the Unassigned tile and are optimized at the GCP level.
Can I use clusters for visual organization only?
Clusters can also be used purely for visual grouping in the XENON Dashboard — for example, to separate parking areas or charger types — without configuring any import limits. In this case, power optimization continues at the main GCP level or parent cluster.
What are the limitations of load management for clusters?
A charging station can only be assigned to one cluster
PV and battery assets in sub-clusters are not supported