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The Glass CHP · CHP

Excitation / AVR

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

Excitation / AVR
Outdoor air → Fresh air → Heat recovery → Heating coil → Hall → Exhaust
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What is Excitation / AVR?

The AVR keeps the generator voltage constant at 400 V (±5 %); excitation voltage typically 40–60 V — deviations indicate controller or winding faults.

The plant — right now

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

What the AI reads from these values

What the AI reads
  • Deviations from 400 V (±5 %) as an indicator of controller instabilities
  • Excitation voltage in the range 40–60 V to determine winding health
  • Trend analysis of the excitation voltage to detect degradation processes
  • Correlation between load and excitation requirement to identify control deviations
Scenario

Monitored: 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 in proportion early and reports it before the protection reacts. It identifies the trend before the limit value is reached.

Why this matters

Stable voltage control prevents overheating of the windings and ensures the service life of the CHP unit generator. Early detection of controller faults minimises unplanned downtime. Stable excitation guarantees a constant power output to the grid. Active power (kW) · Reactive power (kvar) → — kVA apparent power Calculation path: √(active power² + reactive power²)

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Standards & norms

What the rules require — Excitation / AVR

Grounded in the applicable national standards for combined heat and power plants. Same knowledge base as the European reference plant; presented anonymously.

Basis: the applicable national standards. Values shown are those measured on the plant, not target figures.