Thyristor reactor transition loaded adapter switch without quick mechanism

Thyristor reactor transition loaded adapter switch without quick mechanism

  • CN 101,399,534 B
  • Filed: 08/21/2008
  • Issued: 12/17/2014
  • Est. Priority Date: 08/21/2008
  • Status: Active Grant
First Claim
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1. thyristor reactor, is characterized in that, without quick mechanism;

  • With the series circuit of mechanical switch and thyristor inverse parallel alternating-current switch as through-flow and branch road that is transition;

    Mechanical switch is used for changing tap when no-load, and thyristor switch is used for switch load;

    In the process switched, between former tap and new tap, form transition loop with reactance;

    Connect and after thyristor switch cut-offs when transformer current zero crossing, transformer current is switched to new point to realize former point and connects;

    Small area analysis mechanical switch is adopted to control the gate pole of thyristor;

    In handoff procedure, the moving contact of each mechanical switch with the highest conduction voltage drop being no more than thyristor of voltage determined when contact disconnects or connects;

    During switching, first connect at former point the thyristor switch gate circuit disconnected on demand on a moving contact branch road, make this branch road become open circuit;

    When this moving contact move to determine contact with new tap after connect thyristor switch on this branch road again, connect transition reactance loop and pass through transformer current between former tap and new tap;

    Thereafter disconnect the thyristor switch gate circuit that former point connects moving contact branch road, just can realize transformer current from the former switching being switched to new tap when the transformer current zero crossing occurred thereafter.

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