I agree that the Decrement Curve does not encompass the AVR's dynamic response—this could be modelled using an RMS model, but the generator vendor would need to provide the necessary parameters.
I would apply the procedure stated in IEC 90909:2016 (Three-phase Short-Circuit Calculations) to...
The sustained current shown on the decrement curve (https://www.stamford-avk.com/sites/stamfordavk/files/AGN005_D.pdf) is at the generator terminals (shorted), and thus, the current will be less at the faulted bus due to the line
impedances, right? This curve states how the maximum “clearing...
Hello everyone
I am designing a protection system for a local grid with one synchronous generator and consumers.
A mechanical fuse (for example, NH 100 A) is installed at every consumer, and one fuse at the generator. A PMG supplies the AVR system, and thus, the generator has short-circuit...
