6 results about "Tap changer" patented technology

The invention relates to a tap changer for switching among winding taps of a step transformer without interruption, said step transformer having an oil-filled transformer tank, wherein the tap changer does not have a separate housing or a housing that completely encloses the tap changer and is arranged on the outside of or inside the transformer tank connected to the oil filling of the step transformer.

The invention discloses a bothway voltage reactive adjusting device, and relates to a high voltage bus. The bothway reactive voltage adjusting device comprises a transformer, an on-load tap-changer, a first circuit breaker, a second circuit breaker, a capacitor bank, an electric reactor, a current transformer, a voltage transformer and a controller. A tap on the transformer is electrically connected with the on-load tap-changer which is electrically connected with the first circuit breaker and the second circuit breaker, the first circuit breaker is electrically connected with the electric reactor, the second circuit breaker is electrically connected with the capacitor bank, the controller is electrically connected with the on-load tap-changer, the first circuit breaker, the second circuit breaker, the current transformer and the voltage transformer, and the on-load tap-changer, the current transformer and the voltage transformer are electrically connected with the high voltage bus. The bothway reactive voltage adjusting device is simple in structure, capable of achieving bothway reactive voltage adjusting, free of flashy flow and current impact, accurate in voltage controlling, capable of effectively improving the voltage stability and the percent of pass of a partial electric network, and capable of enabling a power distribution system to be safer and more stable.

The invention relates to a method for carrying out a switchover of equipment (20). The equipment (20) comprises at least one first switching means (17), which can be an on-load tap changer, and / or at least one second switching means (18), which can be a two-way commutator (18). The invention additionally relates to a drive system (3) for at least the first and the second switching means (17, 18) of equipment (20). Each first switching means (17) and each second switching means (18) is paired with a dedicated motor (12, 13) which is connected to the first switching means (17) and each second switching means (18) via a driveshaft (16). At least one parameter can be ascertained for the first switching means (17) and each second switching means (18) by a respective feedback system (6, 7) paired with the first motor (12) and each second motor (13). The ascertained parameters determine the locking conditions for the first switching means (17) and the second switching means (18).