高圧変換所監視装置

Title:

高圧変換所監視装置

Document Type and Number:

Japanese Patent JP4024874

Kind Code:

B2

Abstract:

A device in a valve on high voltage potential level and in a high voltage converter station comprises members arranged on high voltage level and adapted to detect parameters of a voltage divider circuit consisting of resistances (24, 25) and capacitors (27, 28) connected in series and across each thyristor of said valve. The capacitors are of self-healing type, in which from the point of time for occurring of a possible fault thereof the capacitance is gradually reduced, and said members are adapted to carry out measurements so as to determine whether the capacitance of the capacitors is changed over the time.

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Inventors:

Astrom, Urban
Björklund, Hans
Niiberg, Christer
Silyestrom, Roland
Asplund, Gunnar

Application Number:

JP50222799A

Publication Date:

December 19, 2007

Filing Date:

May 20, 1998

Export Citation:

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Assignee:

AB ACTIVORA GET

International Classes:

G01R31/40; H02M1/088; H02M1/092

Domestic Patent References:

JP61039851A
JP8031691A
JP2044707A
JP3297218A
JP8021861A
JP63257452A
JP53026655A

Attorney, Agent or Firm:

Hideto Asamura
Hajime Asamura
Hayashi Zouzo
Kuniaki Shimizu

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