Main and branch control system of multi-module wind power converter

Abstract

The invention provides a multi-module wind power converter main and branch control system, and the system comprises a plurality of branch controller modules which are all used for collecting the temperature information and driving waveform of a corresponding wind power converter, and carrying out the threshold judgment of the temperature information, the temperature information and the driving waveform of the wind power converter, which are greater than a preset threshold value, are sent to a main controller module through a main and sub-controller communication line; the main controller module is used for generating pulse width modulation information corresponding to the wind power converter when the wind power converter breaks down, and then sending the pulse width modulation information to the sub-controller module corresponding to the wind power converter through the main and sub-controller communication line; and the plurality of sub-controller modules are also used for controlling an IGBT power module in the wind power converter to act based on the pulse width modulation information. According to the technical scheme provided by the invention, unified control of the multi-module wind power converter is realized, and the reliability and the control speed are improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power converter control, and in particular to a multi-module wind power converter master-slave control system. Background Art

[0002] For a multi-module wind power system with independent converters in parallel, there is no circulation or mutual influence between the modules. Each module has a relatively independent phase reference and phase-locked loop, and the control of the converter is also relatively independent. The inability to perform unified control scheduling results in a slow action speed and reduced control reliability. Summary of the invention

[0003] The present application provides a multi-module wind power converter master-sub control system to at least solve the technical problem that a unified control scheduling cannot be performed, resulting in a slow action speed and reduced control reliability.

[0004] The embodiment of the present application proposes a multi-module wind power converter master-sub-control system, the control system comprising: a master controller module, a master-sub-controller communication line, and a plurality of sub-controller modules;

[0005] The main controller module is connected to the plurality of sub-controller modules respectively through the main sub-controller communication lines;

[0006] The multiple sub-controller modules are used to collect temperature information and drive waveforms of the corresponding wind power converters, and perform threshold judgment on the temperature information, and then send the temperature information and drive waveforms of the wind power converters greater than the preset threshold to the main controller module through the main sub-controller communication line;

[0007] The main controller module is used to determine whether the wind power converter fails according to the temperature information and driving waveform of the wind power converter, and when the wind power converter fails, generate pulse width modulation information corresponding to the wind power converter, and then send the pulse width modulation information to the sub-controller module corresponding to the wind power converter through the main sub-controller communication line;

[0008] The multiple sub-controller modules are also used to control the operation of the IGBT power module in the wind power converter based on the pulse width modulation information.

[0009] Preferably, the temperature information of the wind power converter includes: temperature information of the IGBT power module, temperature information of the DC busbar, and temperature information of the film capacitor.

[0010] Furthermore, the main controller module is also used for:

[0011] When the wind power converter fails, a cooling instruction corresponding to the wind power converter is generated, and the cooling system of the wind power converter is controlled to start based on the cooling instruction.

[0012] Furthermore, the main controller module is also used for:

[0013] The water flow rate information and pressure information of the wind power converter cooling system are collected, and it is determined whether the water flow rate information is within a preset water flow rate range and whether the pressure information is within a preset pressure range; when the water flow rate information is not within the preset water flow rate range, and / or the pressure information is not within the preset pressure range, a cooling system valve opening adjustment instruction is generated, and the opening of the cooling system valve is controlled based on the cooling system valve opening adjustment instruction.

[0014] Further, the sub-controller module includes: a sampling unit and a sub-controller;

[0015] The sampling unit is used to collect temperature information and drive waveform of the wind power converter;

[0016] The sub-controller is used to perform threshold judgment on the temperature information, and then send the temperature information and driving waveform of the wind power converter greater than the preset threshold to the main controller module through the main sub-controller communication line.

[0017] Furthermore, the main controller module is also used to receive the dispatching instructions and the on / off instructions of each wind power converter sent by the control center, and send the status information of each wind power converter to the control center.

[0018] Furthermore, the control system further comprises: a human-machine interface;

[0019] The human-machine interface is used to send a power on / off instruction to the main controller module;

[0020] The main controller module is also used to send status information of each wind power converter to the human-machine interface;

[0021] The human-machine interface is also used to display the status information of each wind power converter.

[0022] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0023] The present application proposes a multi-module wind power converter main-sub-control system, the control system comprising: a main controller module, a main-sub-controller communication line, and a plurality of sub-controller modules; the main controller module is connected to the plurality of sub-controller modules respectively through the main-sub-controller communication line; the plurality of sub-controller modules are used to collect temperature information and drive waveforms of the corresponding wind power converters, and perform threshold judgment on the temperature information, and then send the temperature information and drive waveform of the wind power converter greater than the preset threshold to the main controller module through the main-sub-controller communication line; the main controller module is used to judge whether the wind power converter fails according to the temperature information and drive waveform of the wind power converter, and when the wind power converter fails, generate pulse width modulation information corresponding to the wind power converter, and then send the pulse width modulation information to the sub-controller module corresponding to the wind power converter through the main-sub-controller communication line; the plurality of sub-controller modules are also used to control the action of the IGBT power module in the wind power converter based on the pulse width modulation information. The technical solution proposed in this application can realize the unified scheduling of multi-module converters and improve the reliability and control speed of the operation of the multi-module converters.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0026] Figure 1 A first structural diagram of a multi-module wind power converter master-sub control system provided according to an embodiment of the present application;

[0027] Figure 2 A second structural diagram of a multi-module wind power converter master-sub control system provided according to an embodiment of the present application;

[0028] Reference numerals

[0029] Main controller module 1, main-sub-controller communication line 2, sub-controller module 3, sampling unit 3-1, sub-controller 3-2, human-machine interface 4. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0031] The present application proposes a multi-module wind power converter main-sub-control system, the control system comprising: a main controller module, a main-sub-controller communication line, and a plurality of sub-controller modules; the main controller module is connected to the plurality of sub-controller modules respectively through the main-sub-controller communication line; the plurality of sub-controller modules are used to collect temperature information and drive waveforms of the corresponding wind power converters, and perform threshold judgment on the temperature information, and then send the temperature information and drive waveform of the wind power converter greater than the preset threshold to the main controller module through the main-sub-controller communication line; the main controller module is used to judge whether the wind power converter fails according to the temperature information and drive waveform of the wind power converter, and when the wind power converter fails, generate pulse width modulation information corresponding to the wind power converter, and then send the pulse width modulation information to the sub-controller module corresponding to the wind power converter through the main-sub-controller communication line; the plurality of sub-controller modules are also used to control the action of the IGBT power module in the wind power converter based on the pulse width modulation information. The technical solution proposed in this application can realize the unified scheduling of multi-module converters and improve the reliability and control speed of the operation of the multi-module converters.

[0032] A multi-module wind power converter master-sub control system according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0033] Embodiment 1

[0034] Figure 1 FIG. 1 is a structural diagram of a main-sub control system of a multi-module wind power converter provided according to an embodiment of the present application, such as Figure 1 As shown, the control system includes: a main controller module 1, a main sub-controller communication line 2, and multiple sub-controller modules 3;

[0035] The main controller module 1 is connected to the multiple sub-controller modules 3 respectively through the main sub-controller communication line 2;

[0036] The multiple sub-controller modules 3 are used to collect the temperature information and drive waveform of the corresponding wind power converter, and perform threshold judgment on the temperature information, and then send the temperature information and drive waveform of the wind power converter greater than the preset threshold to the main controller module 1 through the main sub-controller communication line 2;

[0037] The temperature information of the wind power converter includes: temperature information of the IGBT power module, temperature information of the DC busbar, and temperature information of the film capacitor.

[0038] The main controller module 1 is used to determine whether the wind power converter fails according to the temperature information and driving waveform of the wind power converter, and when the wind power converter fails, generate pulse width modulation information corresponding to the wind power converter, and then send the pulse width modulation information to the sub-controller module 3 corresponding to the wind power converter through the main sub-controller communication line 2;

[0039] The multiple sub-controller modules 3 are also used to control the operation of the IGBT power module in the wind power converter based on the pulse width modulation information.

[0040] In the embodiment of the present disclosure, the main controller module 1 is also used for:

[0041] When the wind power converter fails, a cooling instruction corresponding to the wind power converter is generated, and the cooling system of the wind power converter is controlled to start based on the cooling instruction.

[0042] In the embodiment of the present disclosure, the main controller module is also used for:

[0043] The water flow rate information and pressure information of the wind power converter cooling system are collected, and it is determined whether the water flow rate information is within a preset water flow rate range and whether the pressure information is within a preset pressure range; when the water flow rate information is not within the preset water flow rate range, and / or the pressure information is not within the preset pressure range, a cooling system valve opening adjustment instruction is generated, and the opening of the cooling system valve is controlled based on the cooling system valve opening adjustment instruction.

[0044] In the embodiments of the present disclosure, Figure 2 As shown, the sub-controller module 3 includes: a sampling unit 3-1 and a sub-controller 3-2;

[0045] The sampling unit 3-1 is used to collect temperature information and drive waveform of the wind power converter;

[0046] The sub-controller 3 - 2 is used to perform threshold judgment on the temperature information, and then send the temperature information and driving waveform of the wind power converter greater than the preset threshold to the main controller module 1 through the main sub-controller communication line 2 .

[0047] In the disclosed embodiment, the main controller module 1 is further used to receive the dispatching instructions and the on / off instructions of each wind power converter sent by the control center, and send the status information of each wind power converter to the control center.

[0048] It should be noted that the main controller module 1 is also used to receive power adjustment instructions of each wind power converter sent by the control center;

[0049] The main controller module 1 is also used to send power adjustment instructions of each wind power converter to each sub-controller module 3;

[0050] Each sub-controller module 3 is also used to control each wind power converter based on the power adjustment instruction.

[0051] In the embodiments of the present disclosure, Figure 2 As shown, the control system further includes: a human-machine interface 4;

[0052] The human-machine interface 4 is used to send a power on / off command to the main controller module 1;

[0053] The main controller module 1 is also used to send status information of each wind power converter to the human-machine interface;

[0054] The human-machine interface 4 is also used to display the status information of each wind power converter.

[0055] It should be noted that the human-machine interface 4 is also used to send power adjustment instructions of each wind power converter to the main controller module 1;

[0056] The main controller module 1 is also used to send power adjustment instructions of each wind power converter to each sub-controller module 3;

[0057] Each sub-controller module 3 is also used to control each wind power converter based on the power adjustment instruction.

[0058] In summary, the master-slave control system for a multi-module wind power converter proposed in this embodiment can realize the unified scheduling of the multi-module converters and improve the reliability and control speed of the operation of the multi-module converters.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A multi-module wind power converter master-slave control system, characterized in that: The control system comprises: a main controller module, a main sub-controller communication line, and a plurality of sub-controller modules; The main controller module is connected to the plurality of sub-controller modules respectively through the main sub-controller communication lines; The multiple sub-controller modules are used to collect temperature information and drive waveforms of the corresponding wind power converters, and perform threshold judgment on the temperature information, and then send the temperature information and drive waveforms of the wind power converters greater than the preset threshold to the main controller module through the main sub-controller communication line; The main controller module is used to determine whether the wind power converter fails according to the temperature information and driving waveform of the wind power converter, and when the wind power converter fails, generate pulse width modulation information corresponding to the wind power converter, and then send the pulse width modulation information to the sub-controller module corresponding to the wind power converter through the main sub-controller communication line; The multiple sub-controller modules are also used to control the operation of the IGBT power module in the wind power converter based on the pulse width modulation information.

2. The control system according to claim 1, characterized in that: The temperature information of the wind power converter includes: temperature information of the IGBT power module, temperature information of the DC busbar, and temperature information of the film capacitor.

3. The control system according to claim 2, characterized in that: The main controller module is also used for: When the wind power converter fails, a cooling instruction corresponding to the wind power converter is generated, and the cooling system of the wind power converter is controlled to start based on the cooling instruction.

4. The control system according to claim 3, characterized in that: The main controller module is also used for: The water flow rate information and pressure information of the wind power converter cooling system are collected, and it is determined whether the water flow rate information is within a preset water flow rate range and whether the pressure information is within a preset pressure range; when the water flow rate information is not within the preset water flow rate range, and / or the pressure information is not within the preset pressure range, a cooling system valve opening adjustment instruction is generated, and the opening of the cooling system valve is controlled based on the cooling system valve opening adjustment instruction.

5. The control system according to claim 4, characterized in that: The sub-controller module includes: a sampling unit and a sub-controller; The sampling unit is used to collect temperature information and drive waveform of the wind power converter; The sub-controller is used to perform threshold judgment on the temperature information, and then send the temperature information and driving waveform of the wind power converter greater than the preset threshold to the main controller module through the main sub-controller communication line.

6. The control system according to claim 5, characterized in that: The main controller module is also used to receive the dispatching instructions and the on / off instructions of each wind power converter sent by the control center, and send the status information of each wind power converter to the control center.

7. The control system according to claim 6, characterized in that: The control system further comprises: a human-machine interface; The human-machine interface is used to send a power on / off instruction to the main controller module; The main controller module is also used to send status information of each wind power converter to the human-machine interface; The human-machine interface is also used to display the status information of each wind power converter.

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