Week 14

Frequency measurement techniques:

• A literature review was done about the different frequency detection methods used in islanding conditions.

• A Zero crossing method was implemented along with the SRF-PLL method and compared the results.

• The Following graphs depict the tripping signal to the breaker during an islanding condition for the two cases.

Literature review:

• Literature suggests a Predictive PLL method for single phase inverters. A micro controller environment is needed for the implementation.