Practical Microgrid Protection Solutions
Overview
Microgrids and inverter-based resources (IBRs) pose a new set of challenges due to low inertia, low current contributions from inverters, unpredictable inverter behavior, and more. This presentation explains some of these challenges and shares several common techniques to overcome them with programmable protective relays.
You can expect to learn:
- About inverter fault contribution.
- How batteries affect fault duty.
- About inverter controls deficiencies.
- How to adapt protection without communication.
- How programmable relays adapt to inverter-caused miscoordination.
- How to incorporate emergency gensets into an inverter-based microgrid.
- How to prevent PV generation from blacking out an islanded microgrid.
- How to use a relay to help inverters punch through magnetization and cold-load pickup problems.
- How variable inertia and load composition affect stability and relaying.
- How to test islanded power systems and inverters.
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If you have any questions, concerns, or other feedback, please feel free to reach out to Stefany Holcomb or Kim Eller for assistance.
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