Renewables - Grid Following Inverter

Inverter / Voltage Source Converter

Model, Analyze & Study Impact of Inverter-based Resources (IBR) on Electric Power Grid

ETAP inverter element is used to model and simulate inverter-based resources under steady-state, fault and dynamic conditions. Inverter element allows bidirectional exchange of energy between direct current (DC) and alternating current (AC) electric power systems.


ETAP Inverter element is used to interface DC system or resources to AC electric system. This feature gives full flexibility to model hybrid AC/DC systems especially when batteries, PVs and DC loads are combined at DC bus before interconnecting to AC system through an inverter.

Inverter Software Key Features

  • Model unlimited inverters individually or in groups
  • Short-circuit modeling per IEC 60909-2016 and IEEE PSRC C-24 Report
  • Model reactive power control priority and fault right through curve
  • Auto-trip voltage & duration for Low-Voltage Ride Through (LVRT)
  • Grid following control strategy

Design & Analyze Inverter-based Sources and Systems

Electric grid designers or planners can model and simulate inverter-based sources and systems using any technology type, design AC and DC systems, size underground cables, determine adequacy of system grounding, and more. Access of engineering device libraries for renewable sources, battery, cables, protection relays, overhead lines, etc. make the design process flexible yet efficient.



IBR Integration Impact on Electric Grid

System planners can represent inverter-based resources and system to understand the impact of inverter and its control strategy on the grid under various conditions.

System dynamic behavior can be studied by changing IBR control settings, tripping the IBR, simulating system faults at IBR or grid connected buses. Study results determine extent of grid support, grid code compliance, as well as system vulnerability with increase in penetration of IBRs.

ETAP IBR Solution

ETAP inverter element can be used to verify grid connection compliance, steady-state and dynamic simulation of inverter-based resources or systems, size cables and required reactive power sources, calculate short circuit current levels, tuning of control parameters, selection and placement of protective devices, and more.