Advertise · Detection and Diagnosis
Dyneo continuously compares the readings from each substation with what they should be. When a deviation persists, you know where it is, what the likely cause is, how much it costs, and what to do.
The Principle
FDD stands for Fault Detection and Diagnostics. The method originates from the construction and industrial sectors. We apply it to heating and cooling networks, from the production stage all the way to your customers’ substations.
An alarm
It is triggered by a fixed value, ignores weather conditions and historical data, and often occurs in batches of dozens. The cause must still be investigated manually.
A diagnosis
He compares the measurement to what it should be under the current conditions, cross-references related measurements to identify the likely cause, and calculates the cost of the defect.
The Method
Detect
Each measurement is compared to its expected behavior, based on the outdoor temperature, the time of day, and the substation's history. A persistent deviation is classified as an anomaly.
Diagnose
Measurements from adjacent areas are cross-referenced to pinpoint the likely cause: valve, heat exchanger, control system, meter, or secondary circuit.
Prioritize
Each issue is classified based on its impact on grid feedback, energy loss, and your customers' comfort. You should address the most costly issues first.
Take Action and Verify
The recommended action is forwarded to the relevant team. After the work is completed, tests confirm that the defect has been corrected.
What We Detect
Control valve
Stuck open, unstable, or incorrectly sized. Sign: a return line that is too hot and a flow rate that no longer meets demand.
Fouled heat exchanger
The gap between the primary and secondary circuits is widening month by month. This indicates that more flow is needed for the same power.
Water Law
If it's set too high, it overheats the building and increases the return flow. If it's set too low, it leads to complaints of discomfort.
Bypass and Excessive Flow
Hot water that flows back without having released its heat. Indicator: a small difference between the supply and return temperatures.
A meter or sensor that is drifting
One incorrect measurement throws off everything else, right down to the bill. The sign: a discrepancy between production and substations that can no longer be reconciled.
Domestic Hot Water
Improperly adjusted loop control, cycles that are too short, or incorrect DHW priority settings. Symptoms: flow rate spikes and hot return water at night.
Our Approaches
Business Rules
Farmers’ expertise translated into rules: a return value above the contractual target, a round-trip deviation that is too small. Simple, clear, and immediate.
Physical Models
The laws of heat transfer provide the expected value for a heat exchanger or a circuit. Any deviation from the model indicates wear.
Data-Driven Learning
The history of each substation provides insight into its normal behavior. Any deviation from this behavior stands out, even without a predefined rule.
Combined Approach
The three complement each other: learning provides context, while rules and models provide explanations. That is what makes a diagnosis actionable.
First, reliable measurements
Before looking for a fault, we check the measurements: holes, fixed values, reversed probes, and meters that drift. An anomaly detected in a false measurement is useless.
Fewer alerts, more decisions
Instead of hundreds of alerts, your teams receive only the anomalies that matter, along with the substation, the probable cause, and the recommended action.
Frequently Asked Questions
Should we install new sensors?
Generally speaking, no. We start with the data you already have: monitoring systems, substation controllers, and energy meters. If any data is missing for a diagnostic assessment, we'll let you know.
How is this different from the alarms in my monitoring system?
The monitoring system indicates that a threshold has been exceeded. The diagnostic process takes current conditions into account, identifies the likely cause, and classifies the anomalies by impact.
Who works in the field?
Your teams or your maintenance engineer, just like today. Dyneo tells them where to go and what to check, then verifies through the measurements that the defect has been corrected.
Where is the data processed?
The platform is developed in Geneva and hosted in Europe. Your data remains yours.
They operate their networks using Dyneo
