METHOD FOR CONTROLLING A WATER SLUICE GATE DRIVE FOR A WATER SLUICE GATE HAVING AN ELECTRIC MACHINE, SERVICE CONNECTION, WATER SLUICE GATE DRIVE AND HYDROELECTRIC POWER PLANT

• US 20150330047A1
• Filed: 12/18/2013
• Published: 11/19/2015
• Est. Priority Date: 12/21/2012
• Status: Active Grant

• Current Assignee: Wobben Properties Gmbh (Aloys Wobben Stiftung)
• Original Assignee: Wobben Properties Gmbh (Aloys Wobben Stiftung)
• Inventors: Janssen, Andreas, Uphoff, Heinrich
• Granted Patent: US 9,758,940 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E02B 7/30 with guide wheels or rollers for the gates
• CPC Class Codes: E02B 7/36 Elevating mechanisms for vertical-lift gates
• CPC Class Codes: E02B 8/045 automatically movable
• CPC Class Codes: E02B 9/022 Closures
• CPC Class Codes: E02B 9/025 automatically movable
• CPC Class Codes: E02B 9/027 Sliding closures E02B9/025 takes precedence
• CPC Class Codes: F03B 11/004 Valve arrangements F03B3/10 takes precedence; adjustable wicket gates F03B3/183; valves in general F16K
• CPC Class Codes: H02P 3/04 Means for stopping or slowing by a separate brake, e.g. friction brake or eddy-current brake
• CPC Class Codes: H02P 3/14 by regenerative braking
• CPC Class Codes: H02P 3/22 by short-circuit or resistive braking
• CPC Class Codes: H02P 9/46 Control of asynchronous generator by variation of capacitor
• CPC Class Codes: Y02E 10/20 Hydro energy

Abstract

The invention relates to a method for controlling a water sluice gate drive for a water sluice gate, in particular for a roller sluice gate, preferably in a hydroelectric power plant, wherein the drive has an electric machine, in particular has an asynchronous machine, in particular an asynchronous motor/generator. According to the invention, it is provided that the electric machine, in particular an asynchronous machine, has a fan brake, wherein the method comprises the steps of: disengagement of the fan brake in the case that an insufficient power supply is indicated, self-actuated operation of the electric machine, in particular an asynchronous machine, wherein the electric machine, in particular an asynchronous machine, is operated in generative island operation, in which a rotating field is generated in a self-actuating manner.

Claims

1. A method for controlling a water sluice gate drive for a water sluice gate in a hydroelectric power plant, the method comprising:

disengaging a fan brake of an asynchronous machine in the event that an insufficient power supply is indicated; and

in response to disengaging of the fan brake, actuating an operation of the asynchronous machine, wherein the asynchronous machine is operated in a generative island operation, wherein a rotating field is generated in a self-actuating manner.

2. The method according to claim 1, wherein in the event that a sufficient power supply is indicated, the method further comprising the step of:

detecting at least one of a power supply from a grid and a system for an uninterrupted power supply, wherein the asynchronous machine is operated using the power supply.

3. The method according to claim 1,

wherein the asynchronous machine is operated at variable rotational speeds in the event that a sufficient power supply is indicated.

4. The method according to claim 1,

wherein the asynchronous machine is operated to close the water sluice gate and an electric deceleration ramp is run for the asynchronous machine in the event that a sufficient power supply is indicated.

5. The method according to claim 1 further comprising at least of the following steps:

detecting an emergency closure situation; and

detecting an insufficient or absent power supply.

6. The method according to claim 5,

wherein the insufficient power supply comprises a system for an uninterrupted power supply.

7. The method according to claim 1, further comprising:

in the event that an insufficient power supply is indicated, operating the asynchronous machine at different rotational speeds and without a power supply.

8. The method according to claim 1,

wherein disengaging the fan brake comprises an automatic and self-actuated lifting of the fan brake.

9. The method according to claim 1,

wherein actuating the operation of the asynchronous machine occurs under an influence of a weight force of a vertical sluice gate of the water sluice gate, and a rotating field is generated by a capacitor array of excitation capacitors.

10. The method according to claim 1,

wherein at least one control and/or adjustment control stage is run for the asynchronous machine while load shifting to the fan brake.

11. The method according to claim 1, further comprising at least one first stage of load resistors.

12. The method according to claim 1, wherein the asynchronous machine is regulated in at least two speed steps, wherein the two speed steps are selected depending on at least one of the voltage and a position of the water sluice gate.

13. A service connection for controlling a water sluice gate driver for a water sluice gate in a hydroelectric power plant, wherein the water sluice gate drive has an asynchronous machine having a fan brake, the service connection comprising:

a first control phase element for a normal operation, and a second control phase element for an emergency operation, wherein

the second control phase element is designed to operate the asynchronous machine in a generative island operation in a self-actuating manner, wherein a rotating field is generated in the self-actuating manner having at least a first stage of load resistors for at least one of a first control and adjustment control stage and a second stage of load resistors for at least one of a second control and adjustment control stage.

14. A water sluice gate drive for a water sluice gate for control of an asynchronous machine in a hydroelectric power plant, the water sluice gate drive comprising:

a fan brake;

an actuator unit that is designed to disengage the fan brake in the event that an insufficient power supply is indicated; and

a service connection for controlling the water sluice gate drive for the self-actuated operation of the asynchronous machine,

wherein the service connection is designed to operate the asynchronous machine in a generative island operation,

wherein a rotating field can be generated in a self-actuating manner having at least a first stage of load resistors and a second stage of load resistors.

15. The water sluice gate drive according to claim 14, further comprising:

an indicating unit that is designed to detect and initiate an indication of an emergency closure situation.

16. The water sluice gate drive according to claim 14,

wherein the actuator unit has a gas spring accumulator, wherein a brake spring of the fan brake can be disengaged by the gas spring accumulator.

17. The water sluice gate drive according to claim 14,

wherein the actuator unit has a control valve that is closed when energized and open when not energized, said control valve being located in an actuator pressure line between a pressure accumulator and a gas spring accumulator for the actuation of a brake spring of the fan brake.

18. The sluice gate drive according to claim 14,

wherein the service connection has a quantity of excitation capacitors and at least a first quantity of connectible load resistors.

19. The water sluice gate drive according claim 14,

wherein the service connection has a first quantity of connectible load resistors and a second quantity of connectible load resistors.

20. The water sluice gate drive according to claim 14,

wherein the service connection has a second control phase element designed to connect a first stage and a second stage of connectible load resistors depending on at least one of voltage and a position of the water sluice gate.

21. The water sluice gate drive according to claim 14,

wherein the service connection in a first control phase element is designed to electrically control an asynchronous machine at a variable rotational speed by a conventional control current supply from a grid.

22. The water sluice gate drive according to claim 14,

wherein the service connection in a first control phase element is independent of a system for an interrupted power supply.

23. A hydroelectric power plant comprising:

a water sluice gate drive according to claim 14 that is configured to control of an electric machine for a water sluice gate.