Analysis of power system event using synchronized PMUs in Thailand power network

• Main Authors: I. Ngamroo, A. Kunakorn, M. Leelajindakrirerk, Y. Mitani, S. Dechanupapritta, M. Watanabe, P. Jintakosonwit, T. Hashiguchi, Y. Ota, H. Ukai, J. Sakulrat, A. Sode-Yome, T. Tanasaksiri
• Format: Conference Proceeding
• Published: 2018
• Subjects: Energy; Engineering
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=54949112868&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/61048
• Institution: Chiang Mai University

This paper applies the synchronized phasor measurement units (PMUs) based wide-area monitoring system to analyze the power system event under the occurrence of large disturbance. The salient feature of the monitoring system is the convenient installation of PMU at 220 V home outlet. The power system event given here is the tripping of High-Voltage Direct Current (HVDC) link between Thailand and Malaysia due to the fault in a thyristor room at Khlong Ngae converter station of Thailand side on July 22, 2005. The discrete wavelet decomposition and short-time Fourier Transform have been applied to analyze the characteristic of the inter-area oscillation between central and southern areas in both time and frequency domains. Analyzed results based on PMUs data are consistent with the actual tie-line power flow between both areas.