METHOD FOR AVERAGING THE VOLTAGE IN AN ON-LOAD TAP CHANGER

摘要

The invention relates to a method for averaging the voltage in an on-load tap changer used to switch between various winding taps of a tapped transformer. The general inventive concept consists in reaching a predefined operating position of the on-load tap changer by having a parameterized control device activate a motor drive in a first rotational direction once the on-load tap changer has been turned on, such that the on-load tap changer starts running through its stationary operating positions, i.e. the various winding taps of the tapped transformer, in the direction of the first tap; the control device recognizes when the on-load tap changer has reached its final position, whereupon the motor drive is activated in a second rotational direction such that the on-load tap changer then runs through the control range in the opposite switching direction until reaching the first stationary operating position; the first stationary operating position is subsequently configured as a predefined operating position using the control device parameterization stored in a non-volatile manner.

主权项

1. A method of averaging values of an on-load tap changer that is actuatable by a motor drive, for switching between different winding taps of a tapped transformer, the method comprising the following method steps:
after the on-load tap changer has been placed in operation, activating the motor drive by a parameterized control device in a first rotational direction so that the on-load tap changer begins to run through its stationary operating settings, thus the different winding taps of the tapped to transformer, in the direction of the first winding tap, detecting reaching of the end setting of the on-load tap changer by the control device, activating the motor drive in a second direction of rotation so that the on-load tap changer subsequently runs through the regulating range in the opposite switching direction until reaching the first stationary operating setting and subsequently configuring the first stationary operating setting as pre-defined operating setting with the help of the parameterization that is stored in nonvolatile manner of the control device.