The Glass CHP · CHP

How does the grid protection protect the CHP unit?

Ventilation/dehumidification — the silent 24/7 load, with heat recovery. Part of the glass family — like our glass BESS, biogas plant and CHP.

How does the grid protection protect the CHP unit?
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What is How does the grid protection protect the CHP unit??

The grid protection monitors over/undervoltage (110 % / 85 %) and over/underfrequency (50.2 Hz / 49.8 Hz); in the event of a grid failure, it disconnects the plant within 200 ms — preventing islanding and feedback effects on the grid.

The plant — right now

connect… · anonymous reference plant · read-only from the process control system, active power calculated in-house … kW reactive power … kvar apparent power … kVA cos φ … gen. voltage … V frequency … Hz excerpt from … measured values of the plant. To the detailed explanation page with video →

What the AI reads from these values

What the AI reads
  • Over/undervoltage (limits: 105% / 85%) as an indicator of grid instability
  • Frequency deviations (range: 49.8 Hz to 50.2 Hz) for detecting load fluctuations
  • Detection of short circuits to prevent hardware destruction
  • Monitoring of islanding to comply with operational safety
Scenario

Monitoring: continuous

The scenario: a drifting excitation shifts the cos φ without triggering a limit value, reactive power costs or grid issues. The AI: detects the shift early in proportion and reports it before the protection reacts. It identifies the trend before the limit value is reached.

Why this matters

Precise grid protection prevents irreversible damage to the CHP unit components by disconnecting within 200 ms in the event of a grid failure and ensures the operating license. The automatic decoupling protects the windings from overheating due to voltage spikes. Furthermore, it prevents the CHP unit from feeding power into the grid uncontrollably (islanding), which guarantees safety for technicians and the infrastructure. Active power (kW) · Reactive power (kvar) → — kVA apparent power Calculation path: √(active power² + reactive power²)

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