Switching system for an on-load tap changer, on-load tap changer and method for switching a tap connection of an on-load tap changer
AssigneeHitachi Energy Ltd
InventorsGeorgi Manev, Todor Kokev, Angel Mihaylov
Life of this patent
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Abstract
A switching system for an on-load tap changer includes: a Geneva mechanism, wherein the Geneva mechanism includes: a rotatable ring with a recess, a connector, the connector being rotatable together with the rotatable ring to electrically connect with a tap of the tap changer, and a rotatable driving wheel, wherein the driving wheel comprises a holding disk and a lever, the holding disk being rotatable around a longitudinal axis and wherein the lever is slidable radial to the longitudinal axis relative to the holding disk, and wherein the lever is coupleable with the recess to rotate the rotatable ring.
Claims17
A switching system for an on-load tap changer, comprising:
- a Geneva mechanism, the Geneva mechanism comprising:
- a rotatable ring with a recess,
- a connector, the connector being rotatable together with the rotatable ring to electrically connect with a tap of the tap changer, and
- a rotatable driving wheel, the driving wheel comprising a holding disk and a lever, the holding disk being rotatable around a longitudinal axis and the lever being slidable radial to the longitudinal axis relative to the holding disk, and the lever being coupleable with the recess to rotate the rotatable ring;
- and
- a guiding arrangement, the guiding arrangement being configured to guide a movement of the lever in a state in which the lever is decoupled from the recess.
A method for switching a tap connection of an on-load tap changer, comprising:
- rotating a driving wheel around a longitudinal axis, the driving wheel comprising a lever,
- coupling the lever to a recess of a rotatable ring,
- rotating the rotatable ring driven by the lever, thereby rotating a connector relative to a tap of the on-load tap changer,
- exerting a force, by a coil spring attached between the lever and a holding disk of the driving wheel, on the lever in a direction away from the longitudinal axis, and
- sliding the lever radial to the longitudinal axis while the lever is coupled to the recess.
A switching system for an on-load tap changer, comprising:
- a first Geneva mechanism comprising:
- a rotatable ring with a recess,
- a connector, the connector being rotatable together with the rotatable ring to electrically connect with a tap of the tap changer,
- a rotatable driving wheel, the driving wheel comprising a holding disk and a lever,
- the holding disk being rotatable around a longitudinal axis,
- the lever being slidable radial to the longitudinal axis relative to the holding disk, and
- the lever being coupleable with the recess to rotate the rotatable ring;
- a second Geneva mechanism arranged axially offset from the first Geneva mechanism;
- and
- a drive shaft, the drive shaft being rotatable around the longitudinal axis to rotate the driving wheel, wherein the drive shaft is arranged eccentrically to the rotatable ring, and wherein the lever is slidable radial to the longitudinal axis relative to the drive shaft.
Dependencies are inferred from the claim text.