Switch assembly with drive system, and method for driving a switch assembly

Patent metadata

Field	Value
Publication number	US-2022230817-A1
Application number	US-202017611208-A
Country	US
Kind code	A1
Filing date	Apr 23, 2020
Priority date	May 15, 2019
Publication date	Jul 21, 2022
Grant date	—

Abstract

A switch assembly includes a switch, and a servo drive system for the switch. The servo drive system includes a motor configured to drive the switch; a power section configured to supply power to the motor; and a controller embodied as a programmable safety controller configured to actuate the power section depending on a desired value.

First claim

1 : A switch assembly, the switch assembly comprising:
a switch; and a servo drive system for the switch, the servo drive system comprising:
a motor configured to drive the switch;
a power section configured to supply power to the motor; and
a programmable safety controller configured to actuate the power section depending on a desired value.

2 : The switch assembly as claimed in claim 1 , wherein the controller comprises a first processor and a second processor,
wherein the controller is configured to run a program to implement a switching command for the switch, and wherein the first processor and second processor are configured to run the program in parallel.

3 : The switch assembly as claimed in claim 2 , wherein the controller is configured to carry out at least one reconciliation between the first processor and the second processor whilst the program is being run.

4 : The switch assembly as claimed in claim 3 , wherein the controller is configured to initiate a safety measure depending on a result of the at least one reconciliation.

5 : The switch assembly as claimed in claim 4 , wherein the safety measure comprises tripping a circuit breaker to disconnect an item of equipment associated with the switch from a power network.

6 : The switch assembly as claimed in claim 4 , wherein the safety measure comprises a safe stopping of the motor.

7 : The switch assembly as claimed in claim 4 , wherein the safety measure comprises a shutdown or blocking of the power section.

8 : The switch assembly as claimed in claim 2 , wherein the controller is configured to carry out a comparison of a process image of the first processor with a process image of the second processor whilst the program is being run.

9 : The switch assembly as claimed in claim 2 , wherein a hardware of the first processor is different from a hardware of the second processor.

10 : The switch assembly as claimed in claim 1 , wherein the controller is configured to check a locking condition of two or more components of the switch assembly.

11 : The switch assembly as claimed in claim 1 , wherein the controller comprises inputs and outputs which are configured as clocked inputs and outputs, respectively.

12 : The switch assembly as claimed in claim 11 , wherein the controller is configured to check for the presence of a cross-circuit based on input signals or output signals which are present at the inputs or outputs, respectively.

13 : The switch assembly as claimed in claim 1 , wherein the switch is an on-load tap-changer or a diverter switch or selector or a double reversing change-over selector or a reversing change-over selector or a change-over selector or a circuit breaker or an on-load switch or a disconnecting switch.

14 : A method for driving a switch assembly, the method comprising:
actuating a power section of the switch assembly using a programmable safety controller depending on a desired value; implementing a switching command for a switch of the switch assembly; and running a program in parallel using two processors in order to implement the switching command.

Assignees

• Reinhausen Maschf Scheubeck

Inventors

• Ixmeier Klaus
• Nagel Eugen
• Zerr Eduard

Classifications

• H01H3/26 Primary

  using dynamo-electric motor (for storing energy in a spring motor H01H3/30) · CPC title

• H01H3/22 Primary

  Power arrangements internal to the switch for operating the driving mechanism · CPC title

• H01H2003/266

  having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts · CPC title

• H01H9/0027

  Operating mechanisms · CPC title

• H01H2009/0061

  Monitoring tap change switching devices · CPC title