Conference Paper

Performance of novel neutral admittance criterion in MV-feeder earth-fault protection

ABB Oy Distribution Automation - Finland
Conference: Electricity Distribution - Part 1, 2009. CIRED 2009. 20th International Conference and Exhibition on
Source: IEEE Xplore

ABSTRACT This paper describes the fundamentals of the neutral admittance based earth-fault protection. First, the theory is briefly introduced. Secondly, certain improvements to the traditional measuring principle and operation characteristics are suggested. Finally, the performance is evaluated and compared with traditional earth-fault protection schemes using simulated and recorded data. The results show that the neutral admittance criterion has potential to become a standard and widely used earth-fault protection function in high impedance earthed networks.

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