Abstract
This study aims to develop a real-time assessing methodology for a power systems voltage stability. The proposed algorithm is based on the Thévenin equivalent (TE) impedance estimation method, which applies the phasor measurement unit technology practically. To present an accurate analysis of the real-time situations of a power system, the developed voltage stability index can be used as useful information for system operators to establish appropriate countermeasures. Moreover, by considering the results of voltage stability margin calculation within the Korean power system, the effect of voltage stability on the dynamic behavior of the system is presented. Furthermore, to increase the accuracy, load model parameter estimation is introduced in this algorithm. The load model might be used for calculating the stability margin more accurately. The power-voltage curve is drawn in theory using the TE voltages and impedances. To validate the case study of the proposed method, simulations were executed using the Matlab software. The simulations demonstrated the effectiveness of the proposed method and detected voltage stability/instability under severe contingency scenarios.
Highlights
Voltage stability has become a serious issue in modern power systems
The information obtained from a phasor measurement unit (PMU) is synchronized by a global positioning system (GPS), which can be transmitted in almost real time [3,4]
The results of the voltage stability analysis of the practical system are investigated
Summary
Voltage stability has become a serious issue in modern power systems. As power systems are becoming increasingly complex and dynamic, uncertainty regarding their stability is increasing gradually. All the snapshot data indicate the same time, allowing for the representation of a dynamic situation across a wide area of the power system, thereby enabling a wide range of stability monitoring and control applications. For this reason, the research of real-time voltage stability monitoring has focused on developing new indices to detect voltage instability. The research of real-time voltage stability monitoring has focused on developing new indices to detect voltage instability To prevent blackouts such as a voltage collapse, an accurate and efficient real-time online voltage stability monitoring methodology is necessary [5,6,7,8,9,10]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
