Publication detail

Evaluation of Harmonics Impact on Digital Relays

WANNOUS, K. TOMAN, P.

Original Title

Evaluation of Harmonics Impact on Digital Relays

Type

conference paper

Language

English

Original Abstract

Digital relay is an important part of the power system and actually is based on fundamental frequency (50-60 Hz). Digital filter is applied for further processing and performs mathematical operations on sampled values. The digital signal processing (DSP) becomes more applied and used in proactive relays. Obviously, DSP is used in wide range of application (controls, radio, communications and other devices). In this paper the comparison between the conventional digital relay and developed relay using Matlab/Simulink is performed. As known the conventional relay is using mathematics algorithm to calculate the current input signal and to evaluate the fault current, total harmonic distortion (THD) and harmonic components. Likewise, the developed relay is using the current signal and evaluates it and converts the input signal to digital signal. Since the digital signal is more flexible and easier to progress it and work on it. Importantly, the test is used to evaluate the functions and mathematics for both relays.

Keywords

THD; Overcurrent relay; Sampling frequency; Simulink; Matlab; Harmonic signal

Authors

WANNOUS, K.; TOMAN, P.

Released

17. 5. 2017

Publisher

VŠB - Technická univerzita Ostrava

Location

Ostrava

ISBN

978-1-5090-6405-2

Book

Proceedings of the 2017 18th International Scientific Conference on Electric Power Engineering (EPE)

Pages from

515

Pages to

520

Pages count

752

BibTex

@inproceedings{BUT137691,
  author="Kinan Hasan Wafaa {Wannous} and Petr {Toman}",
  title="Evaluation of Harmonics Impact on Digital Relays",
  booktitle="Proceedings of the 2017 18th International Scientific Conference on Electric Power Engineering (EPE)",
  year="2017",
  pages="515--520",
  publisher="VŠB - Technická univerzita Ostrava",
  address="Ostrava",
  doi="10.1109/EPE.2017.7967311",
  isbn="978-1-5090-6405-2"
}