US 11,774,471 B2
Method for distributed electrical power determination
Fabian Assion, Bielefeld (DE); Christian Lienen, Delbrueck (DE); and Jakob Ens, Harsewinkel (DE)
Assigned to Beckhoff Automation GmbH, Verl (DE)
Filed by Beckhoff Automation GmbH, Verl (DE)
Filed on Jul. 28, 2021, as Appl. No. 17/387,642.
Application 17/387,642 is a continuation of application No. PCT/EP2020/052880, filed on Feb. 5, 2020.
Claims priority of application No. 10 2019 103 270.9 (DE), filed on Feb. 11, 2019.
Prior Publication US 2021/0356501 A1, Nov. 18, 2021
Int. Cl. G01R 21/133 (2006.01); G01R 19/25 (2006.01); G01R 21/06 (2006.01); G01R 22/06 (2006.01)
CPC G01R 21/133 (2013.01) [G01R 19/2513 (2013.01); G01R 21/06 (2013.01); G01R 22/063 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for distributed electrical power determination of at least one consumer connected to a voltage source via a voltage path, wherein a voltage measuring device determines a supply voltage of the voltage source at a voltage measuring point on the voltage path, and wherein at least one current measuring device determines a consumer current of the consumer at a current measuring point on the voltage path, comprising the method steps:
recording voltage readings of the supply voltage by the voltage measurement device to determine a voltage curve of the supply voltage in a voltage measurement step;
recording current measured values of a consumer current of the at least one consumer by the at least one current measurement device for determining a current curve of the consumer current in a current measurement step;
analyzing the voltage measured values of the supply voltage and/or the current measured values of the consumer current with an analysis function in an analysis step, in order to determine voltage characteristics of the voltage curve of the supply voltage and/or current characteristics of the current curve of the consumer current, the analysis of the voltage measured values of the supply voltage in the analysis step being carried out by the voltage measurement device, and/or
wherein the analysis of the current measured values of the consumer current in the analysis step is performed by the at least one current measurement device, wherein the analysis function is a mathematical function, and wherein the voltage characteristics and/or the current characteristics are parameters of the analysis function;
transmitting the voltage characteristics by the voltage measuring device to a processor unit and/or transmitting the current characteristics by the at least one current measuring device to the processor unit; and
determining at least one power value taking into account the voltage characteristics of the voltage curve of the supply voltage and/or the current characteristics of the current curve of the consumer current by the processor unit in a power value determination step.