FLUID-COOLED LOAD RESISTOR FOR USE IN ENERGY PRODUCTION AND USE THEREFOR

• US 20120306201A1
• Filed: 02/17/2011
• Published: 12/06/2012
• Est. Priority Date: 02/18/2010
• Status: Abandoned Application

• Current Assignee: Energreen AS
• Original Assignee: Energreen AS
• Inventors: Sorensen, Per Hassel
• Application Number:
  US13/579,750
• Publication Number:
  US 20120306201A1
• Time in Patent Office: Days
• US Class Current: 290/7
• CPC Class Codes: F03B 11/00 Parts or details not provided for in, or of interest apart from, the preceding groups controlling F03B15/00, e.g. wear-protection couplings, between turbine and generator
• CPC Class Codes: F03B 15/00 Controlling controlling in general G05 ; regulation of plants characterised by the use of siphons F03B13/086
• CPC Class Codes: Y02E 10/20 Hydro energy

Abstract

A load resistor device for a generator driven by a turbine in a fluid string wherein the load resistor is provided with at least one electrical element in heat conducting connection with the turbine driving fluid. Also described is a method for use of such a device.

Claims

1. A load resistor device for a generator driven by a turbine in a fluid string, the load resistor device comprising:

a load resistor is provided with at least one electrical element configured to be in heat conducting connection with the turbine driving fluid.

2. A load resistor device according to claim 1, wherein the electrical element is in heat conducting connection with a heat conducting pipe wall surrounding the driving fluid.

3. A load resistor device according to claim 1, wherein the load resistor is provided with an annulus surrounding a portion of a heat conducting pipe wall surrounding the driving fluid;

wherein the annulus is provided with a cooling fluid and the electrical element is in heat conducting connection with the cooling fluid.

4. A load resistor device according to claim 3, wherein the cooling fluid is a heat inert and fire inert fluid.

5. A load resistor device according to claim 3, wherein the longitudinal direction of the annulus in the operational position is substantially vertical.

6. A load resistor device according to claim 3, wherein the annulus is provided with an expansion chamber.

7. A load resistor device according to claim 1, wherein the electrical element is an inductively connected electrical element.

8. A load resistor device according to claim 7, wherein a portion of the pipe wall constitutes the inductively connected electrical element.

9. A load resistor device according to claim 7, wherein a portion of a turbine housing constitutes the inductively connected electrical element.

10. A load resistor device according to claim 1, wherein the load resistor is provided with multiple electrical elements;

and the electrical elements are connected to different phases and where the electrical elements may be connected in parallel.

11. A load resistor device according to claim 1, wherein a control unit for the generator is arranged to distribute the generator produced electrical energy between a distribution grid and the load.

12. A load resistor device according to claim 1, wherein the driving fluid is consumption water or oil.

13. A method in operating a turbine being driven by a driving fluid in a line network where the turbine is provided with a generator arranged to supply electrical energy to a distribution grid via a control unit, comprising:

directing, by the control unit, at grid loss the produced electrical energy to a load resistor provided with at least one electrical element in heat conducting connection with the turbine driving fluid.

14. A method according to claim 13, further comprising:

measuring, by the control unit, the electrical voltage in a local distribution grid;

providing, by the control unit, the local distribution grid with electrical energy according to the measured voltage; and

directing, by the control unit, surplus energy to the load resistor.