SOLAR PV SCADA SYSTEMS

Customized SCADA systems to meet all solar PV project requirements

Nor-Cal’s turnkey SCADA systems include a Power Plant Controller (PPC) enabling site-wide substation and individual inverter and device level control, meeting all Utility IA, PPA and ISO requirements.

Solar PV SCADA Solution Overview

Solar PV SCADA HMI Graphical Screens:

- - Web-based
  - Customizable
  - Allows for changes in settings and control modes
  - POI data: MW, MVar, Voltages, Currents
  - Breaker Control
  - Inverter Auto/Manual – Start/Stop control
  - Inverter data: MW, MVar, Voltages, Currents
  - Site Controller for real and reactive power commands in compliance with LGIA and PPA
  - Alarms and Events

Solar PV SCADA Power Plant Controller Functionalities:

Active Power Control (Control modes adjusted per market: CAISO, MISO, ERCOT).
AGC – Active Power Curtailment & Limit Control: irradiance ramp control, max POI limit regulation, ramp rate control
Setpoint Ramp Rate
Site Output Ramp Rate Control
Frequency Response
Automatic Voltage Regulation with various control modes:
Reactive Power Control Mode
Power Factor Control Mode
Voltage Control Mode (Droop)
Voltage Control Mode (setpoint)
Ramp Rate Control and Reactive Limits
Capacitor and Inductor Bank Control
Custom site/Utility/AHJ specific requirements

Hardware:

Emerson RX3i – PLC (Redundant as optional)
Full 19” SCADA rack with PPC – SCADA Server-Historian Server, Firewall, root Switches, Fiber and Cable management
Field communication enclosures (Field switches – Remote I/O, Fiber and cable management
MET Stations