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Custom Web Control
About PQ Diagram_BESS
PQ Diagram_BESS is a Custom Web Control that plots the operating point of a battery energy storage system on an active and reactive power (P-Q) diagram. The operating point is drawn against a nominal apparent power contour, so operators can see at a glance how much converter capacity is in use and which quadrant the system is operating in.
Key Features
- Real-time operating point: activePower and reactivePower move the point across the diagram as values change.
- Nominal apparent power contour: nominalApparentPower sets the radius of the PQ circle.
- Limit highlighting: the contour turns red when apparentPower exceeds the nominal rating, and the LimitExceeded event notifies your application.
- Active quadrant highlighting: the quadrant matching the current operating mode is emphasized.
- Change notification: the PowerPointChanged event fires whenever active or reactive power changes.
Customization
Legend and axis labels for discharge, charge, inductive, capacitive, positive reactive and negative reactive are fully configurable, so the diagram matches your site language and naming conventions. The background can be transparent to blend into any screen layout, or set to a chosen colour through backgroundColor.
Power values can be bound to PLC tags or updated in one step with the setPowerValues method. The background mode can be switched at runtime with the setBackgroundTransparent method.
Use Cases
Ideal for battery storage operator panels, control room overviews, and commissioning screens where reactive power support and converter loading must be verified against the nominal rating.
Compatibility
Works with WinCC Unified (TIA Portal) and WinCC V8. Import the control into your project and bind its properties to HMI tags.
AI-Generated: This custom web control was generated using AI. Test and validate it thoroughly before deploying in production environments.
⚠️ AI-Generated: This custom web control was automatically generated using AI technology. It may contain errors or unexpected behavior. Users are responsible for testing and validating before using in production environments.