Method for controlling a wind power installation or a wind farm

Abstract

A control system of a wind power installation and/or a wind farm is provided. The control system has a plurality of operating modes and has an interface. The interface is configured for providing maximum adjustability of the wind power installation and/or the wind farm in critical power grid situations. The interface is configured to receive a signal of a power grid operator, as a result of which all of the plurality of operating modes are released and made available to the power grid operator.

Claims

1. A control system of a wind power installation or a wind farm, comprising: a first interface configured to receive a first signal from a power grid operator, wherein: the control system has a plurality of operating modes for controlling the wind power installation or the wind farm, the control system is configured to enable adjustment of the wind power installation or the wind farm in critical power grid situations, and the control system is configured to, in response to receiving the first signal, release all of the plurality of operating modes of the control system and make all of the plurality of operating modes available to the power grid operator.

2. The control system as claimed in claim 1, comprising: one or more second interfaces configured to receive a second signal from a third party.

3. The control system as claimed in claim 2, wherein the control system is configured to assign a highest priority to the power grid operator within the control system when the first signal is received from the power grid operator over the first interface.

4. The control system as claimed in claim 2, wherein the third party is a wind power installation operator and the control system is configured to deactivate the one or more second interfaces when the first signal is received from the power grid operator via the first interface.

5. The control system as claimed in claim 2, wherein the one or more second interfaces are configured to enable at least one of the following open-loop and/or closed-loop control methods: reactive power control; voltage control; active power control; direct current marketing; minute reserve; secondary reserve; temperature control; Cos-phi control; Q(V) control; shadowing control; and bat control.

6. The control system as claimed in claim 1, comprising: a database configured to log access of the power grid operator to the wind power installation or the wind farm is logged.

7. The control system as claimed in claim 1, wherein: the control system has at least one safe operating mode, the at least one safe operating mode is deactivated, the at least one safe operating mode is only capable of being activated by the power grid operator and over the first interface.

8. The control system as claimed in claim 7, wherein the safe operating mode includes at least one function from a list of: inertia emulation; primary control power; Q(V) control with maximum adjustment range; and breakdown control.

9. A control system of a wind power installation or a wind farm, comprising: a first interface configured to receive a first signal from a power grid operator, wherein: the control system is configured to enable adjustment of the wind power installation or the wind farm in critical power grid situations, the control system is configured to, in response to receiving the first signal, release a plurality of operating modes of the control system and make the plurality of operating modes available to the power grid operator, and the control system has at least one operating mode that is activated and is only capable of being deactivated by the power grid operator over the first interface.

10. The control system as claimed in claim 9, wherein the at least one operating mode includes at least one function from a list of: noise-reduction operating mode; and night operation mode.

11. The control system as claimed in claim 1, wherein the plurality of operating modes comprises at least one mode from a list of operating modes including: a power grid recovery mode that is activated in response to receiving the first signal from the power grid operator over the first interface; a STATCOM mode that is activated in response to receiving the first signal from the power grid operator over the first interface; a noise-reduction mode that is deactivated in response to receiving the first signal from the power grid operator over the first interface; and a bat-detection mode that is deactivated in response to receiving the first signal from the power grid operator over the first interface.

12. The control system as claimed claim 1, wherein the control system is a control system of the wind power installation.

13. The control system as claimed claim 1, wherein the control system is a control system of the wind farm.

14. A method for controlling a wind power installation or a wind farm, comprising: receiving, by a control system of the wind power installation or the wind farm, a first signal; wherein the control system has a plurality of operating modes for controlling the wind power installation or the wind farm, determining whether the first signal is from a power grid operator and releasing and making available to the power grid operator all of the plurality of operating modes of the wind power installation or the windfarm; and in response to determining that the first signal is from the power grid operator and releasing and making available to the power grid operator all of the plurality of operating modes of the wind power installation or the windfarm, releasing all of the plurality of operating modes of the wind power installation or the windfarm to the power grid operator.

15. The method as claimed in claim 14, comprising: logging the releasing of the plurality of operating modes to the power grid operator.

16. The method as claimed in claim 14, wherein determining the first signal is from the power grid operator and releases and makes available all of the plurality of operating modes of the wind power installation or the wind farm to the power grid operator includes: comparing the first signal with signals stored in a database.

17. The method as claimed in claim 14, comprising: controlling the wind power installation or the wind farm by the power grid operator.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) The present invention will now be explained in more detail below in an exemplary fashion, on the basis of exemplary embodiments and with reference to the accompanying figures, wherein the same reference symbols are used for identical or similar assemblies.

(2) FIG. 1 shows a schematic view of a wind power installation according to one embodiment,

(3) FIG. 2 shows a schematic design of a wind farm with a control system according to one embodiment, and

(4) FIG. 3 shows a schematic sequence of a method according to one embodiment.

DETAILED DESCRIPTION

(5) The wind power installation 100 has for this purpose a tower 102 and a nacelle 104. An aerodynamic rotor 106 with three rotor blades 108 and a spinner 110 is arranged on the nacelle 104. The rotor 106 is made to rotate by the wind during operation and as a result drives a generator in the nacelle 104.

(6) In addition, the wind power installation has a control system which is described above or below and is connected to a wind farm control unit and/or to a power grid operator.

(7) FIG. 2 shows a schematic design of a wind farm 1000 with a control system 1400 according to one embodiment.

(8) The wind farm 1000 comprises a plurality of wind power installations 1100, such as are shown for example in FIG. 1 and which are connected to one another via a common wind farm grid 1200.

(9) The wind farm grid 1200 is connected to an electricity supply grid 2000 by means of a wind farm transformer 1300, in order, for example, to feed electrical wind farm power P.sub.park which is composed of a sum of the individual electric wind power installation power levels P.sub.WT.

(10) In addition, the wind farm 1000 has a control system 1400 according to the disclosure which is embodied as a wind farm control unit, in particular in order to control the wind farm 1000.

(11) The control system 1400 comprises a plurality of operating modes B1, B2, B3 and an interface 1410 and a further interface 1420.

(12) The interface 1410 is configured to receive a signal of a power grid operator 3000, as a result of which all of the plurality of operating modes B1, B2, B3 are released to the power grid operator 3000. This interface 1410 can also be referred to as a power grid operator interface.

(13) As a result, the power grid operator 3000 can access the operating modes B1, B2, B3 of the wind farm 1000 and select them, in particular in such a way that the wind farm 1000 contributes to stabilizing the electricity supply grid 2000.

(14) The further interface 1420 is, for example, an interface for the installation operator 4000, who can also access the wind farm via this interface 1420. This interface 1420 can also be referred to as a wind farm operator interface 1420.

(15) In order to prevent technical control problems, the interface 1410 of the power grid operator has a higher priority within the control system 1400, i.e., the control system 1400 prioritizes the inquiries and specification of the power grid operator over further inquiries or specifications of third parties such as, for example, the installation operator 4000 or the internal control software. This is preferably implemented using control software.

(16) Finally, the actuation of the individual wind power installations 1100 is carried out via a control interface 1430 which is connected to the individual wind power installation control units 1180, for example by means of various control signals S.sub.CONT.

(17) The control system 1400 is preferably also configured to monitor the feeding by the wind farm 1000 into the electricity supply grid 2000, in particular to monitor the voltage V.sub.grid at a grid connecting point of the wind farm.

(18) FIG. 3 shows a schematic sequence of a method according to one embodiment 5000.

(19) In a first step 5100, a signal is received by the control system of the wind power installation and/or of the wind farm.

(20) Then, in a next step 5200 it is determined whether the signal is a signal of a power grid operator which releases and makes available all of a plurality of operating modes of the wind power installation and/or of the wind farm to the power grid operator.

(21) Insofar as the signal is such a signal, in a next step 5300 the plurality of operating modes of the wind power installation and/or of the wind farm is released to the power grid operator.

(22) The power grid operator is then authorized to select corresponding operating modes, such as for example a power grid recovery mode.

(23) The wind power installations of the wind farm are then controlled in a next step 5400 in accordance with the operating mode which is selected by the power grid operator.

(24) It is therefore proposed, in particular, that insofar as a critical power grid situation, such as for example the power grid recovery, occurs, the power grid operator can access the wind farms or wind power installations, in particular immediately. The power grid operator can then deactivate all the limitations within the wind farm or the wind power installations and the wind farms or wind power installations participate with their maximum performance capability in power grid support measures.

(25) For this it is, in particular, also proposed that the power grid operator can deactivate further interfaces and/or other external setpoint values such as, for example, from the installation operator

(26) The various embodiments described above can be combined to provide further embodiments. These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure.