Publication detail

ANALYSIS OF THE DIFFERENTIAL PROTECTION FUNCTION ACCURACY IN THE UNIT REF 542PLUS

PROKOP, V.

Original Title

ANALYSIS OF THE DIFFERENTIAL PROTECTION FUNCTION ACCURACY IN THE UNIT REF 542PLUS

Type

conference paper

Language

Czech

English abstract

The differential protections present basic protection to protect power transformers, motors, generators, blocks power transformer-generator, bus bars and important lines. Differential protection has to operate in very short time to faults in the protection zone, but it must not operate to faults outside. Control and protection unit REF 542plus is used to protect in medium voltage systems. Unit REF 542plus has a lot of protection functions even the differential protection function. This paper deals with measuring of accuracy of the differential protection function algorithm in the unit REF 542plus applied to protect power transformer because in this case are the highest requirements (vector group adaptation, difference between nominal primary current and nominal secondary current, etc.) It was measured the minimum setting values of the characteristic of the differential protection. Differential current was generated by the amplitude simulation of incoming and outgoing current. At the end is evaluated accuracy of the algorithm.

Key words in English

differential current, bias current, tripping time

Authors

PROKOP, V.

Released

25. 5. 2006

Publisher

Novotný

Location

Brno

ISBN

80-214-3162-8

Book

Student EEICT 2006, Vol. 3

Edition

vol.3

Edition number

3

Pages from

81

Pages to

85

Pages count

5

BibTex

@inproceedings{BUT18972,
  author="Václav {Prokop}",
  title="ANALYSIS OF THE DIFFERENTIAL PROTECTION FUNCTION ACCURACY IN THE UNIT REF 542PLUS",
  booktitle="Student EEICT 2006, Vol. 3",
  year="2006",
  series="vol.3",
  volume="12",
  number="12",
  pages="5",
  publisher="Novotný",
  address="Brno",
  isbn="80-214-3162-8"
}