Multi-Level-Clustering

Thanks to multi-level-clustering you can replicate the electrical topology of your charging site to configure the load management setup most effectively within HARMON-E.

In a multi-level-clustering setup, the load manager distributes power not just to individual charging stations, but across and within several clusters of chargers that share the same grid connection point. Each cluster represents a group of charging stations that share a common power source (the sub-distribution board), and the clusters are all connected to a single grid connection point for the entire site.

Static or Dynamic Load Management within the cluster?

For dynamic load management within a cluster, you add a power meter to the cluster.

For static load management within a cluster, you omit to add a power meter.

Here’s how the concept works:

• Grid Connection Point: The site is connected to the electrical grid at one main point. The total available power for the site flows through this connection, which represents the maximum capacity (Grid Connection Limit) for all loads on site, incl. charging activities.
  
  
• Charging cluster / Sub-distribution boards: The power from the grid connection is divided among multiple sub-distribution boards. Each sub-distribution board is responsible for powering a group (or cluster) of EV chargers. These clusters could be spread across different physical areas or charging zones on the site.
  
  
• Load management within clusters: Inside each cluster, load management allocates power to the individual EV chargers to optimise usage and avoid exceeding the limits of the sub-distribution board.
  
  
• Load management between clusters: At a higher level, the system coordinates the power distributed across the different clusters. If one cluster is drawing more power (due to heavy usage or more vehicles charging), the system may reduce the available power to other clusters to stay within the overall grid connection limit.
  
  
• Dynamic optimisation: The load management system continuously monitors the power usage in real time across all clusters and balances the load as necessary. For example, if one cluster’s demand decreases (because fewer vehicles are charging), the system allocates more power to another cluster.

Multi-level-clustering allows large-scale EV charging operations to be more efficient and flexible by managing power at both the cluster level and the site-wide level, ensuring that the total load across all clusters remains within the available capacity from the grid. This setup enhances site scalability and improves overall power management.