Experiences on Remediation of Special Protection System for Kinmen Power System in Taiwan

Ching Jung Liao, Yen Feng Hsu, Yung Fu Wang, Sheng Hui Lee, Yu Jen Lin, Chia Chi Chu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The isolated power system in Kinmen island, Taiwan has already implemented the special protection system (SPS) to prevent various critical contingencies occurred during the past decade. However, when one severe N-2 contingency occurred on July 26, 2013, the SPS was not properly armed its under-frequency load shedding (UFLS). After re-examining the transient recorded waveforms, it was observed that the system still has sufficient spinning reserve and the coordination between the under-frequency relay and the current SPS was not well considered. In this paper, the current SPS is further modified in order to avoid the occurrence of the excessive load shedding under similar N-2 contingencies. Extensive time-domain dynamical simulations are performed first to study the relationship between the amount of the load shedding and the frequency deviations under these extreme N-2 contingencies. Based on these simulation results, the remediation scheme of the SPS will be proposed by modifying the existing SPS design logic and the amount of load shedding. More comprehensive input triggered states are proposed for identifying these severe N-2 contingencies. Simulation verifications are performed to validate the effectiveness of the proposed remediation scheme.

Original languageEnglish
Title of host publication2019 IEEE Industry Applications Society Annual Meeting, IAS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538645390
DOIs
StatePublished - 09 2019
Externally publishedYes
Event2019 IEEE Industry Applications Society Annual Meeting, IAS 2019 - Baltimore, United States
Duration: 29 09 201903 10 2019

Publication series

Name2019 IEEE Industry Applications Society Annual Meeting, IAS 2019

Conference

Conference2019 IEEE Industry Applications Society Annual Meeting, IAS 2019
Country/TerritoryUnited States
CityBaltimore
Period29/09/1903/10/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

Keywords

  • power system protection
  • special protection system (SPS)
  • supervisory control and data acquisition system (SCADA)
  • under-frequency load shedding (UFLS)

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