Modulation and SSR tests performed on the BPA 500 kV thyristor controlled series capacitor unit at Slatt substation

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Field experience is reported for a thyristor controlled series capacitor (TCSC) recently commissioned at BPA`s Slatt substation. Subsynchronous resonance tests show that TCSC interactions with shaft dynamics of PGE`s Boardman steam generator are well understood and are effectively avoided by normal TCSC valve firing logic. Modulation tests, performed with the Boardman plant off line, show that the TCSC can be a powerful and responsive actuator for swing damping. Security considerations did not permit lightly damped operation of the controlled plant. Close analysis indicates that the TCSC damping contribution, though small, was measurable. The best estimate is that damping for the ... continued below

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6 p.

Creation Information

Hauer, J.F.; Mittelstadt, W.A.; Piwko, R.J.; Damsky, B.L. & Eden, J.D. July 1, 1995.

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  • Hauer, J.F. Pacific Northwest Lab., Richland, WA (United States)
  • Mittelstadt, W.A. Bonneville Power Administration, Portland, OR (United States)
  • Piwko, R.J. General Electric Co., Schenectady, NY (United States)
  • Damsky, B.L. Electric Power Research Inst., Palo Alto, CA (United States)
  • Eden, J.D. Portland General Electric, OR (United States)

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

Field experience is reported for a thyristor controlled series capacitor (TCSC) recently commissioned at BPA`s Slatt substation. Subsynchronous resonance tests show that TCSC interactions with shaft dynamics of PGE`s Boardman steam generator are well understood and are effectively avoided by normal TCSC valve firing logic. Modulation tests, performed with the Boardman plant off line, show that the TCSC can be a powerful and responsive actuator for swing damping. Security considerations did not permit lightly damped operation of the controlled plant. Close analysis indicates that the TCSC damping contribution, though small, was measurable. The best estimate is that damping for the McNary mode is 7.33% and 8.55%, for the TCSC damper loop open and closed respectively. TCSC testing and monitoring is facilitated by an advanced interactive measurement network representing BPA`s approach to the information requirements of major control systems.

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6 p.

Notes

OSTI as DE95016814

Source

  • 1995 IEEE Power Engineering Society summer meeting, Portland, OR (United States), 23-27 Jul 1995

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  • Other: DE95016814
  • Report No.: PNL-SA--26337
  • Report No.: CONF-950727--1
  • Grant Number: AC06-76RL01830
  • Office of Scientific & Technical Information Report Number: 102171
  • Archival Resource Key: ark:/67531/metadc620176

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Creation Date

  • July 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 7, 2016, 4:45 p.m.

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Hauer, J.F.; Mittelstadt, W.A.; Piwko, R.J.; Damsky, B.L. & Eden, J.D. Modulation and SSR tests performed on the BPA 500 kV thyristor controlled series capacitor unit at Slatt substation, article, July 1, 1995; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc620176/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.