Improving the power supply reliability in resonant earthed systems by fault current path control established through Faulted Phase earthing Switch

This paper shows that appropriate manipulation of the Faulted Phase earthing Switch within the system using resonant earthed neutral, can be used to establish a controlled path for the fault current. In this way the arc extinguishes and the fault can be safely located without interruptions to the energy supply. The proposed current path control method is confirmed with simulations and extensive field-testing.