Enhancement of static excitation system performance for generators near electric arc furnace loads

Chi Jui Wu, Shih Shong Yen, Wei Nan Chang, Chiu Nan Cheng, Chao Hui Li, Tzong Yih Guo

Research output: Contribution to journalJournal Article peer-review

14 Scopus citations

Abstract

Tuning of static excitation systems (SESs) to enhance the performance of six gas turbine (GT) generators near an electric arc furnace (EAF) feeder has been successfully accomplished. The operation of these EAFs causes severe and long duration voltage fluctuation at the generator bus. Frequent generator tripping was reported when the adjacent EAFs were in operation. Preliminary field measurements and computer simulation indicated that the SESs did not have sufficient damping under this type of voltage fluctuation. By the adjustment of the SES gains and time constants according to the guideline set by the IEEE Standard 421.2, the SES damping can be greatly improved. This has been verified by additional field tests on six GT generation units. Now these generators can be operated very well although the EAFs still cause voltage fluctuation.

Original languageEnglish
Pages (from-to)225-231
Number of pages7
JournalIEEE Transactions on Energy Conversion
Volume14
Issue number2
DOIs
StatePublished - 1999
Externally publishedYes

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