Grid “Health Check” reports for power grid managers


The first set of free quarterly grid Health Check reports to power distribution system operator (DSO) customers have been provided by Depsys to its customers.

The technology company uses real network data collected by its GridEye grid optimisation solution, to highlight trends, anomalies and outliers, delivering individual reports that will help them to better understand and manage distribution networks.

Anja Langer Jacquin, chief commercial officer, comments on the launch: “Our goal is to simplify the energy transition for grid managers; to help them improve and maintain operational excellence in the face of the challenges it will bring. Whereas we already do that with real-time, ongoing grid monitoring, we realised that we could use that same data to give grid managers additional insights into how their networks are performing over time. So, we did – and feedback so far has been overwhelmingly positive.”

The Health Checks were created on behalf of seven DSO customers in Switzerland, Germany and Ireland. The ambition is to extend the free service across Depsys’ entire customer base – which currently stands at around 40 DSOs around the world.

Delivered quarterly, the reports will be honed based on customer feedback to maximise their value. As a result of the graphic interface and help in interpreting data, some recipients have already made new inspection plans in response to the data.

Over time, the Health Checks will provide a long-term view on grid performance and areas for attention.

Emilie Zermatten, technical account manager and one of the analysts behind the Health Check initiative, says: “There are all sorts of insights these Health Checks can deliver: Where are cables running at near 100% load a lot of the time? Where are voltages close to acceptable limits? Where are power quality events happening most? Answers to these types of questions can help grid managers plan maintenance work and upgrades, or adjust their grid management strategies. Ultimately, we aim to help them keep the lights on, evolve their services and extend the life of assets.”

The Health Checks use data drawn from Depsys’ flagship digital grid optimisation solution, GridEye and combines intelligent analysis and head-end components with state-of-the-art field units to capture and analyse real-time, real data.

Report details for each DSO:

  • Provides overview of both voltage and loading for the last quarter
  • Focuses on devices (transformers and cabinets) with extreme performance (highest and lowest values on average over the period of time)
  • Pinpoints nodes close or above their voltage limit (+/-10%), or close to 100% loading
  • Shows the stability or instability of certain nodes (high loading/high voltage on few points)
  • Highlights nodes with a high number of power quality events