GM 2019 - Modeling of Converter-Interfaced Renewable Sources for Short Circuit Studies

With sharp increase in renewable generation connecting to the power grid, short circuit models of such generation used in commercial fault and protection analysis simulation programs, have come under scrutiny and need to be updated. The challenges hindering this effort is the unavailability of control data for the converters that interconnect such generation with the grid, lack of grid codes (with a few exceptions), and performance requirements for fault response of these devices. Working Group C24 in the Power System Relaying and Control Committee (PSRC) has been working to get consensus about the data that the wind turbine and PV system manufacturers can provide, without revealing proprietary details, that can be used to develop accurate short circuit models by developers of short circuit analysis tools. The presenters in this panel will discuss the need and development of such models. Validated generic models developed by EPRI and models incorporated in commercial short circuit programs will be showcased.