Method and apparatus for transmitting electrical power

Patent metadata

Field	Value
Publication number	US-2016172853-A1
Application number	US-201314436507-A
Country	US
Kind code	A1
Filing date	Sep 9, 2013
Priority date	Oct 17, 2012
Publication date	Jun 16, 2016
Grant date	—

Abstract

The present invention relates to a method ( 40 ) for transmitting electrical power between an energy supply grid ( 16 ) and an energy consumer ( 12 ) or energy producer ( 12 ) which is coupled to the energy supply grid ( 16 ), wherein at least one electrical variable of the energy supply grid ( 16 ) is detected, wherein a discrepancy between the electrical variable and a rated variable of the energy supply grid ( 16 ) which is associated with the electrical variable is determined, wherein the power transmission is controlled on the basis of the discrepancy, and wherein the electrical variable is a mains frequency and/or a mains voltage of the energy supply grid ( 16 ) and the rated variable is a rated frequency and/or rated voltage of the energy supply grid ( 16 ).

First claim

1 . A method for transmitting electrical power between an energy supply grid and an energy consumer or energy generation unit coupled to the energy supply grid, said method comprising the following steps:
detecting at least one electrical variable of the energy supply grid, determining a discrepancy between the electrical variable and a rated variable of the energy supply grid which is assigned to the electrical variable, and controlling the power transmission on the basis of the discrepancy, wherein the electrical variable is selected from the group consisting of a line frequency and a mains voltage of the energy supply grid and the rated variable is selected from the group consisting of a rated frequency and a rated voltage of the energy supply grid.

2 . The method as claimed in claim 1 , wherein a control range between a first and a second threshold value for the electrical variable is defined in which the power transmission is changed on the basis of the discrepancy of the electrical variable, wherein the rated variable is outside the control range.

3 . The method as claimed in claim 2 , wherein the transmitted power in the control range is decreased continuously as the discrepancy between the electrical variable and the rated variable increases.

4 . The method as claimed in claim 2 , wherein the transmitted power in the control range is increased continuously as the discrepancy between the electrical variable and the rated variable decreases.

5 . The method as claimed in claim 2 , wherein the power transmission is interrupted in the event of discrepancies of the electrical variable which exceed the control range.

6 . The method as claimed in claim 2 , wherein a second control range between a third and a fourth threshold value for the electrical variable is defined in which the power transmission is changed on the basis of the electrical variable, wherein the rated variable is between the second control range and the first control range.

7 . The method as claimed in claim 6 , wherein the transmitted power in the second control range is increased continuously as the discrepancy between the electrical variable and the rated variable increases.

8 . The method as claimed in claim 6 , wherein the transmitted power in the second control range is decreased continuously as the discrepancy between the electrical variable and the rated variable decreases.

9 . The method as claimed in claim 2 , wherein the threshold values for the electrical variable are fixed on the basis of the rated variable.

10 . The method as claimed in claim 1 , wherein the rated variable is determined on the basis of the detected electrical variable.

11 . The method as claimed in claim 2 , wherein the power is transmitted from the energy supply grid to the energy consumer, and wherein the first control range is defined below the rated variable.

12 . The method as claimed in claim 2 , wherein the power is transmitted from the energy generation unit to the energy supply grid, and wherein the first control range defined above the rated variable.

13 . The method as claimed in claim 1 , wherein the control of the power transmission is switched off on the basis of an operating condition of the power transmission.

14 . An apparatus for transmitting electrical power between an energy supply grid and an energy consumer or energy generation unit which is coupled to the energy supply grid, said apparatus comprising:
a detection unit for detecting at least one electrical variable of the energy supply grid, an evaluation unit for determining a discrepancy between the electrical variable and a rated variable of the energy supply grid assigned to the electrical variable, and a control unit, which is designed to control the power transmission on the basis of the discrepancy, wherein the electrical variable is selected from the group consisting of a line frequency and a mains voltage of the energy supply grid and the rated variable is selected from the group consisting of a rated frequency and/or rated voltage of the energy supply grid.

15 . The apparatus as claimed in claim 14 , wherein a control range between a first and a second threshold value of the electrical variable is defined, wherein the rated variable is outside the control range, and wherein the control unit is designed to decrease the transmitted power in the control range continuously as the discrepancy between the electrical variable and the rated variable increases.

Assignees

• Bosch Gmbh Robert

Inventors

• Eckert Bernd
• Krauter Gisbert
• Faye Lan

Classifications

• Y04S10/126

  the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G] · CPC title

• B60L53/52

  Wind-driven generators · CPC title

• B60L53/63

  in response to network capacity · CPC title

• Y02B70/3225

  Demand response systems, e.g. load shedding, peak shaving · CPC title

• B60L53/65

  involving identification of vehicles or their battery types · CPC title