ATP-EMTP Investigation for Fault Location in Medium Voltage Networks
نویسنده
چکیده
This paper presents a new fault location (FL) method for medium voltage (MV) networks operating with the neutral solidly grounded or grounded across a small resistance. The FL algorithm is based on the impedance measurement principle and uses the recorded three-phase voltage and current signals as well as the network impedance for the particular symmetrical components – pre-calculated after each change in the network configuration and stored in the database. The phase voltages are measured at the supplying bus-bar, while the threephase currents are considered as delivered from the faulted feeder. The currents can also be taken from the supplying transformer, if only one centralized-type digital fault recorder is installed at the substation.
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