Integrated Power Plant Controller & SCADA

Situationally Intelligent Power Plant Controller

Situationally Intelligent Power Plant Controller

Control & Automate

ETAP PPC interfaces with the renewable inverters, Battery Energy Storage Systems (BESS), power conditioning devices such as STATCOM and capacitor banks. The interface is two-way communication between these devices and ETAP PPC. Real-time information is measured from these devices and analyzed in real-time to provide closed-loop (supervisory) or open-loop/manual (advisory) control.


ETAP PPC supports both national and international grid codes, thus enabling grid-compliant feed-in from renewable systems at medium-voltage and high-voltage levels. ETAP PPC facilitates comprehensive regulation of active and reactive power as well as the voltage of heterogeneous renewable systems.

Key Features & Capabilities

Control & Automate_Key_Feature

  • Comprehensive Regulation of Active, Reactive Power & Voltage
  • High-Accuracy Power Quality Analyzer records all Grid Parameters during Operation
  • Fast and Stable Control at the Grid Connection Point

ETAP PPC supports both national and international grid codes, thus enabling grid-compliant feed-in from PV systems at medium-voltage and high-voltage levels. 

ETAP PPC facilitates comprehensive regulation of active and reactive power as well as the voltage of heterogeneous PV systems.

ETAP PPC graphical user interface provides optimal support during commissioning and requires no programming knowledge on your part. Parameterizing, instead of programming, allows for easy and quick compliance with complex grid connection regulations.

ETAP PPC supports customization through graphical and software programming means to handle evolving grid codes and interfaces with nearly all inverter controllers.

Essential control loop functions can be set with the predefined parameters to meet the Grid Utility requirements of most power plant projects.

For large power plants, challenging Grid Codes, or customer requests, the essential control loop functions are augmented with more advanced functions depending on the plant-specific needs.

Active Power Management

  • Active Power Constraint
  • Characteristic Curve Control
  • Ramp Rate Control
  • Reconnection Soft Start
  • Safety Shutdown
  • Over Frequency Control
  • Under Frequency Control

Reactive Power Management

  • Fixed Setpoint Control
  • Characteristic Curve Control
  • Ramp Rate Control
  • Reactive Power Control
  • Reactive Power Limitation
  • Power Factor Control
  • Voltage Control
  • Capacitor, Reactor, STATCOM Control
  • Overnight Reactive Power or Voltage Control

Energy Storage Management

  • Frequency support
  • Power smoothing / ramping
  • SOC balancing with multiple BES
  • SOC management
  • Peak Power Shifting

Data Exchange

  • Interface with ETAP SCADA
  • Setpoint commands for signal monitoring
  • Status signals for alarming
  • Electrical parameters at PCC
  • Environmental parameters at plant location

Dynamic Grid Support

Interactive features including LVRT, OVRT, FRS, FRT, Anti-islanding, active, and reactive power management.


Voltage Control

Maintains the grid voltage to the reference voltage at the POC by supplying or absorbing reactive power. The Voltage Control can be set without any droop or with a droop (between 0% and 10%).


Power Factor Control

Maintains a constant Power Factor at the POC, whatever the grid voltage or losses in the transformers of the power plant.


Constant Reactive Power Control

Maintains a fixed reactive power exchange at the POC, whatever the grid voltage and the power plant production.


Active Power Curtailment

For several reasons, like the overload of the lines, excess of intermittent energy production, the Grid Utility may request to curtail the production. Active power curtailment may be applied with or without ramp rate control.


Frequency Control

During an over-frequency event, the PPC can quickly decrease the active power injection at POC proportionally to the frequency deviation. During an under-frequency event and when an active power limitation is in progress, the PPC for the power plant can partially or fully release the active power limitation to participate in grid stability.

Additional Capabilities 


PPC calculates new target values reactive power (Q) or power factor (PF) and can implement them in a matter of seconds


Constant Q or PF are made available permanently or by request


Dynamically specified values for Q or PF are managed at the grid connection point


Seamless reduction of active power (P) as needed


Automatic reduction of P at a defined grid frequency according to a definable characteristic curve.


Provide Q at night. Constant or dynamic values may be preset


Capacity banks and static reactive power compensators (STATCOM) can be integrated into plant control


Inverters stay connected to the grid during voltage drops and support the grid by feeding reactive power



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