US 11,919,417 B2
Load management system and method for managing loads in a power distribution grid
Raoul Heyne, Wiernsheim (DE); Alexander Schneider-Schaper, Wiernsheim (DE); Martin Rezac, Prague (CZ); Barry Sole, Pforzheim (DE); Hartmut Chodura, Stuttgart (DE); Ulf Schlieben, Ditzingen (DE); and Sunny Rohilla, Stuttgart (DE)
Assigned to Dr. Ing. h.c. F. Porsche Aktiengesellschaft, (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Nov. 10, 2020, as Appl. No. 17/094,043.
Claims priority of application No. 10 2019 130 337.0 (DE), filed on Nov. 11, 2019.
Prior Publication US 2021/0138926 A1, May 13, 2021
Int. Cl. B60L 53/68 (2019.01); B60L 53/10 (2019.01); B60L 53/30 (2019.01); B60L 53/51 (2019.01); B60L 53/63 (2019.01); B60L 53/64 (2019.01); B60L 53/66 (2019.01); H02J 3/32 (2006.01); H02J 7/35 (2006.01)
CPC B60L 53/68 (2019.02) [B60L 53/11 (2019.02); B60L 53/30 (2019.02); B60L 53/51 (2019.02); B60L 53/63 (2019.02); B60L 53/64 (2019.02); B60L 53/66 (2019.02); B60L 53/665 (2019.02); H02J 3/322 (2020.01); H02J 7/35 (2013.01); B60L 53/305 (2019.02); H02J 2310/60 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A load management system for managing loads present in a power distribution grid, said load management system comprising:
a control unit;
at least three current transformers that are each connected to the control unit by a signal cable; and
a power-generating device connected to a supply line for the power distribution grid, wherein the power-generating device is a renewable power source for at least one charging station of the power distribution grid,
wherein:
a first current transformer of the at least three current transformers is arranged in the power distribution grid such that said first current transformer is configured for measuring a current level in a three-phase grid connecting line of the power distribution grid, said three-phase grid connecting line is-being connected to a power supply company,
a second current transformer of the at least three current transformers is arranged in the power distribution grid such that said second current transformer is configured for measuring a current level in a first power line of the power distribution grid, said first power line feeding the at least one charging station of the power distribution grid,
a third current transformer of the at least three current transformers is arranged in the power distribution grid and configured for measuring a current level in a second supply line for the power distribution grid, said second supply line being connected to the power-generating device via the third current transformer, and being configured to feed the at least one charging station of the power distribution grid as a primary power source,
wherein the control unit is configured to:
detect which individual phase of the three-phase grid connecting line supplies power to the at least one charging station of the power distribution grid by supplying a predetermined current level on a specific phase of the three-phase grid connecting line and measuring a reduced predetermined current level on the specific phase.