Italy-based Santerno has developed an in-house PV Power Plant Controller (PPC) for utility-scale power plants intended to provide a single point of integrated control and monitoring that is said to reduce costs. The company is showcasing the technology at Solar Power International 2013, booth #746.
“By developing our own Power Plant Controller we are able to consolidate management of Santerno solar inverters with other plant monitoring and SCADA systems into a single interface,” said Franco Valentini, Marketing Director of Santerno. “When you add in support from our online Web management portal, you have a complete controller solution, including remote monitoring.”
The Santerno PPC is said to be a complete control solution that provides a single access point for the plant supervisory control and data acquisition (SCADA) control systems, including all PV inverters, the data logger, and auxiliary services, eliminating the need to integrate a separate management system for the solar power inverters.
It also provides a single, self-tuned, modified proportional internal (PI) controller which is said to operate at the plant level to make sure all the inverters match power grid code requirements.
However, unlike other systems, the Santerno PPC avoids the trial-and-error approach typically used to match standard PI regulators as the power parameters are set in advance using the plant data and the electrical characteristic data for the Point of Interconnection (POI), automatically matching international grid code requirements.
The PPC can be optionally configured to control static VAR compensator (SVC) or static synchronous compensator (STATCOM) at the Point of Interconnections (POI). This enables the PV plant for Extended Power Capability or Flexible AC Transmission System functions.
It also has Digital Control Functions, including closed loop active power curtailment, closed look reactive power control, closed-loop POI voltage control, and P(f) curtailment control.