US 12,136,526 B2
Circuit breaking apparatus
Sergio Lopez, The Hague (NL); Esteban Zimmermann, Zürich (CH); and Philipp Erich Burch, Muri (CH)
Assigned to HITACHI ENERGY LTD, Zürich (CH)
Appl. No. 17/777,130
Filed by Hitachi Energy Ltd, Zürich (CH)
PCT Filed Nov. 9, 2020, PCT No. PCT/EP2020/081405
§ 371(c)(1), (2) Date May 16, 2022,
PCT Pub. No. WO2021/094226, PCT Pub. Date May 20, 2021.
Claims priority of application No. 19209514 (EP), filed on Nov. 15, 2019.
Prior Publication US 2022/0392721 A1, Dec. 8, 2022
Int. Cl. H01H 11/00 (2006.01); G01R 31/327 (2006.01); H01H 9/56 (2006.01); H01H 71/70 (2006.01)
CPC H01H 11/0062 (2013.01) [G01R 31/3274 (2013.01); H01H 9/56 (2013.01); H01H 71/70 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A circuit breaking apparatus, comprising:
a circuit breaker electrically connected to a power line;
a motor drive system comprising a motor coupled to a linkage, the motor drive system being mechanically coupled to the circuit breaker and configured to operate the circuit breaker such as to perform a movement including at least an opening movement from a closed position to an open position, thereby electrically interrupting the power line;
a controller configured to control the motor drive system based on a model of at least one of the motor drive system and the circuit breaker,
wherein the controller is configured to:
receive reference travel curve information of the movement of the circuit breaker, wherein the reference travel curve information comprises a reference on trajectory and speed;
generate actuator information from the reference travel curve information based on the model wherein the actuator information comprises information that is output to the motor drive system to control a circuit breaker opening travel curve; and
output the actuator information to the motor drive system to control a travel curve via model-based control, wherein model-based control comprises performing model predictive control,
wherein the model-based control comprises using an optimized control strategy mathematically optimized for at least one optimization objective in an optimization problem, the optimization objective being selected from a group consisting of: a position described by the reference travel curve information and a speed described by the reference travel curve information, the reference travel curve comprises information on a circuit breaker position and/or a movement speed in the course of time,
wherein the optimization problem comprises a cost function including the optimization objective, and at least one constraint equation, the at least one constraint equation describing a threshold for a varying magnitude of the circuit breaking apparatus that varies during the movement, and
wherein the reference travel curve comprises a time dependent progression of a reference position of a part of the motor drive system or the circuit breaker.