SMA SC 500HE-US - Manual (Page 25)

SMA America, LLC 3 Product Description
Operating Manual SC500HEUS-eng-BE-BUS120320 25
Figure 8: Principle of grid integration
Besides the Power Reducer Box, there are two other options for meeting the requirement of the grid
operator:
• Receiving the signals via two analog inputs on the Sunny Central
• Manual specification adjustment via parameters
3.8.2 Active Power Limitation
There are five methods for limiting the active power independent of the power frequency. The limit can
be defined using a parameter and supplied by the grid operator via an external signal.
At the same time, the active power can be limited depending on the power frequency (for information
on active power limitation parameterization, see section 7 "Active Power Limitation", page 35).
3.8.3 Reactive Power Regulation
The Sunny Central can provide reactive power. There are eleven methods for specifying the reactive
power target value. They include entering a fixed parameter, processing an external signal from the
grid operator or specifying the reactive power using characteristic curve parameters (for information
on reactive power regulation, see section 8 "Reactive Power Regulation", page 40).