A Study on the Out-of-Step Detection Algorithm Using Time Variation of Complex Power-Part II: Out-of-Step Detection Algorithm and Simulation Results

You-Jin Lee, O-Sang Kwon, Jeong-Yong Heo and Chul-Hwan Kim
Additional contact information
You-Jin Lee: KEPCO Research Institute (KEPRI), Daejeon 34056, Korea
O-Sang Kwon: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16410, Korea
Jeong-Yong Heo: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16410, Korea
Chul-Hwan Kim: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16410, Korea

Energies, 2020, vol. 13, issue 7, 1-15

Abstract: One of the established unstable power swing (out-of-step) detection algorithms in micro grid/smart grid power systems uses a trajectory of apparent impedance in the R-X plane. However, this algorithm is not suitable for fast out-of-step conditions and it is hard to detect out-of-step conditions exactly. Another algorithm for out-of-step detection is using phasor measurement units (PMUs). However, PMUs need extra equipment. This paper presents the out-of-step detection algorithm using the trajectory of complex power. The trajectory of complex power and generator mechanical power is used to identify out-of-step conditions. A second order low pass digital filter is used to extract the generator mechanical power from the complex power. Variations of complex power are used to identify equilibrium points between stable and unstable conditions. The proposed out-of-step algorithm is based on the modification of assessment of a transient stability using equal area criterion (EAC). The proposed out-of-step algorithm is verified and tested by using alternative transient program/electromagnetic transient program (ATP/EMTP) MODELS.

Keywords: out-of-step; power swing; equal area criterion; complex power; transient stability; micro grid protection; smart grid protection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/7/1833/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/7/1833/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:7:p:1833-:d:343742

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().