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US 8,013,555 B2Granted
Drive system for a tap changer
AssigneeABB Research Ltd.
InventorChrister Thornell-Pers
Life of this patent
Estimating the term…
Abstract
A drive system for operation of a tap changer for voltage regulation of a transformer on load. An electric motor is connectible to a movable part of the tap changer for moving the movable part for carrying out a tap change operation. An electric converter connects an electric power supply to the electric motor. A control arrangement is adapted to control the electric converter for controlling the operation of the motor and by that of the tap changer.
Claims26
A drive system for operation of a tap changer for voltage regulation of a transformer on load, said system comprising:
- an electric motor connectible to a movable part of said tap changer for moving the movable part for carrying out a tap change operation,
- a connection configured to connect the electric motor to an electric power supply for an operation of the electric motor,
- a control arrangement configured to control the operation of the electric motor and, thereby operation of said tap changer,
- an electric converter for connection of said power supply to said electric motor, wherein said control arrangement is adapted to control said electric converter for controlling the operation of the electric motor,
- a detector adapted to detect movement of an output shaft of the electric motor and a position of a movable part of the tap changer, and
- a communicator adapted to send information from the detector to said control arrangement, wherein said control arrangement is computerized and configurable and customizable prior to commissioning and in use for enabling adaption of the drive system to different voltage levels of said power supply and to different properties of a tap changer to be operated by said drive system.
3 more elements
A method for carrying out tap change operations for voltage regulation of a transformer in a system for transmission or distribution of electric power, the method comprising:
- providing a drive system for operation of a tap changer for voltage regulation of a transformer on load, said system comprising an electric motor connectible to a movable part of said tap changer for moving the movable part for carrying out a tap change operation, a connection configured to connect the electric motor to an electric power supply for an operation of the electric motor, a control arrangement configured to control the operation of the electric motor and, thereby operation of said tap changer, an electric converter for connection of said power supply to said electric motor, wherein said control arrangement is adapted to control said electric converter for controlling the operation of the electric motor, a detector configured to detect movement of an output shaft of the electric motor and a position of a movable part of the tap changer, and a communicator adapted to send information from the detector to said control arrangement, wherein said control arrangement is computerized and configurable and customizable prior to commissioning and in use for enabling adaption of the drive system to different voltage levels of said power supply and to different properties of a tap changer to be operated by said drive system;
- and
- carrying out tap change operations utilizing the system.
An electric power plant comprising:
- a transformer, and
- a tap changer drive system comprising an electric motor connectible to a movable part of said tap changer for moving the movable part for carrying out a tap change operation, a connection configured to connect the electric motor to an electric power supply for an operation of the electric motor, a control arrangement configured to control the operation of the electric motor and, thereby operation of said tap changer, an electric converter for connection of said power supply to said electric motor, wherein said control arrangement is adapted to control said electric converter for controlling the operation of the electric motor, a detector configured to detect movement of an output shaft of the electric motor and a position of a movable part of the tap changer, and a communicator adapted to send information from the detector to said control arrangement, wherein said control arrangement is computerized and configurable and customizable prior to commissioning and in use for enabling adaption of the drive system to different voltage levels of said power supply and to different properties of a tap changer to be operated by said drive system.
Dependencies are inferred from the claim text.