Digital protection relay for 22 kV power line model with partial power quality measurement

Author

Regula, Michal ; Otcenasova, Alena ; Bodnar, Roman ; Hoger, Marek

Author_Institution

Dept. of Power Electr. Syst., Univ. of Zilina, Zilina, Slovakia

fYear

2015

fDate

20-22 May 2015

Firstpage

412

Lastpage

417

Abstract

The paper deals with the function and structure of a digital protection relay (DPR) used in 22 kV power lines. It contains the description of the relay´s software and hardware and its realization. The device is designed for the three-phase 22 kV power line model. DPR is created for the microcontroller MCF51EM256. There were also algorithms designed for partial power quality (PQ) measurement for this microcontroller. Designed algorithm is programmed and debugged using the demo kit of the intelligent smart meter DEMOEM where this type of microcontroller has been used. The proper function of the created protection relay is verified by real model tests.

Keywords

microcontrollers; power cables; power supply quality; power system measurement; relay protection; smart meters; DPR; MCF51EM256 microcontroller; digital protection relay; intelligent smart meter DEMOEM; partial PQ measurement; partial power quality measurement; three-phase power line model; voltage 22 kV; Algorithm design and analysis; Current measurement; Harmonic analysis; Power measurement; Power system harmonics; Relays; Voltage measurement; THD; digital protection; harmonics; power network analyzator; power quality;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Power Engineering (EPE), 2015 16th International Scientific Conference on

Conference_Location

Kouty nad Desnou

Type

conf

DOI

10.1109/EPE.2015.7161174

Filename

7161174