Enhancement of linearity and constancy of PMU-based voltage stability index: application to a Korean wide-area monitoring system
- Authors
- Jung, Jaeyeop; Cho, Hwanhee; Park, Bohyun; Nam, Suchul; Hur, Kyeon; Lee, Byongjun
- Issue Date
- 4-9월-2020
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Keywords
- phasor measurement; power system stability; power system measurement; phase measurement; Korean power system operation data; Korean wide-area monitoring system; previous stability index; constancy; PMU-based voltage stability index; wide-area voltage stability monitoring method; synchronised phasor measurements; system changes; power system stability level
- Citation
- IET GENERATION TRANSMISSION & DISTRIBUTION, v.14, no.17, pp.3357 - 3364
- Indexed
- SCIE
SCOPUS
- Journal Title
- IET GENERATION TRANSMISSION & DISTRIBUTION
- Volume
- 14
- Number
- 17
- Start Page
- 3357
- End Page
- 3364
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/53187
- DOI
- 10.1049/iet-gtd.2019.0773
- ISSN
- 1751-8687
- Abstract
- This study presents a new wide-area voltage stability monitoring method using synchronised phasor measurements. The salient features of the proposed index are the following: (i) It ensures constancy, which is the ability to maintain the same scale even if the system changes. (ii) It is pseudo-linear with respect to the power system stability level, which enhances intuitiveness for real-time operation. Accordingly, stability can be uniformly compared in various situations, and thus, the index can be used as a solid criterion or threshold point for system operation. A verification study of the proposed index with regard to constancy is carried out using Korean power system operation data. Furthermore, an implementation of the proposed method for the Korean wide-area monitoring system is presented, and it is demonstrated that the proposed index detects event more clearly than previous stability index through an actual event measured using phasor measurement units.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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