The study of sampled value differential protection

Author

Yang, J.C. ; Yin, X.G. ; Chen, D.S. ; Zhang, S. ; Wang, Z.H.

Author_Institution

Coll. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

1

fYear

2003

fDate

7-12 Sept. 2003

Firstpage

256

Abstract

The sampled value differential protection is described in this paper. The selections of S, R of the protection are investigated with respect to different restraint modes. The basic selective rule is to ensure the restraint effectiveness of the sampled value differential protection equal or superior to the corresponding phasor differential protection during external faults. The particular fuzzy operating zone of the proposed protection is also discussed and its expressions are presented. The operating characteristic phasor analyzing method is proposed to analyze the operating characteristic of sampled value differential protection, which uses the phasor relationships of input currents of the protected system to represent the operating zone, fuzzy operating zone and restraint zone.

Keywords

fuzzy set theory; power system protection; fuzzy operating zone; operating characteristic phasor analyzing method; phasor differential protection; restraint zone; sampled value differential protection; Educational institutions; Fuzzy systems; Protection; Sampling methods; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exposition, 2003 IEEE PES

Print_ISBN

0-7803-8110-6

Type

conf

DOI

10.1109/TDC.2003.1335230

Filename

1335230