CN217880029U - Variable-current control system and wind generating set - Google Patents
Variable-current control system and wind generating set Download PDFInfo
- Publication number
- CN217880029U CN217880029U CN202220243744.6U CN202220243744U CN217880029U CN 217880029 U CN217880029 U CN 217880029U CN 202220243744 U CN202220243744 U CN 202220243744U CN 217880029 U CN217880029 U CN 217880029U
- Authority
- CN
- China
- Prior art keywords
- controller
- power
- control system
- analog quantity
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The application discloses conversion control system and wind generating set. The variable flow control system comprises: at least one control device, each control device comprising: the controller is respectively connected with the power interface component and the communication input and output interface component and is connected with the universal analog quantity acquisition interface components one by one through the universal analog quantity acquisition interfaces of the controller; each power interface component is connected with a power module of one direct current bus unit and converts the level of a pulse width modulation control signal output by the controller into a level matched with the power module; and each universal analog quantity acquisition interface component processes the corresponding acquired analog quantity signal into a signal matched with the universal analog quantity acquisition interface. According to the embodiment of the application, the adaptability of the variable flow control system to different power analog quantities can be improved.
Description
Technical Field
The application belongs to the technical field of wind power, and particularly relates to a variable flow control system and a wind generating set.
Background
At present, in a converter provided in the related art, a controller directly acquires an analog quantity signal through an analog quantity signal interface, because different analog quantity signal powers are different, the controller needs to be designed according to specific parameters of the acquired analog quantity, when the requirement of the analog quantity changes, the controller needs to be modified and designed again, and the development period of modifying and upgrading the controller is long.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a variable flow control system and a wind generating set, and the adaptability of the variable flow control system to different power analog quantities can be improved.
In a first aspect, an embodiment of the present application provides a variable flow control system, where the variable flow control system includes: at least one control device, each control device comprising: the controller, power interface module, communication input/output interface module to and a plurality of general analog quantity acquisition interface module, wherein:
the controller is respectively connected with the power interface assembly and the communication input and output interface assembly and is connected with the universal analog quantity acquisition interface assemblies one by one through a plurality of universal analog quantity acquisition interfaces of the controller;
each power interface component is used for being connected with a power module of one direct current bus unit and converting the level of a pulse width modulation control signal output by the controller into a level matched with the power module of the direct current bus unit;
each universal analog quantity acquisition interface component is used for processing the corresponding acquired analog quantity signal into a signal matched with the universal analog quantity acquisition interface of the controller.
Optionally, the controller is respectively configured to be connected to the power modules of the two dc bus units through the two power interface assemblies, so as to synchronously control the two dc bus units through the pwm control signal.
Optionally, the power modules of the dc bus unit include a three-phase machine side power module and a three-phase network side power module, and each power interface component is configured to be connected to each phase power module of the dc bus unit through a cable based on the D-sub standard.
Optionally, the controller is further configured to collect a fault signal and a temperature collection signal of each phase of the power module through the power interface assembly.
Optionally, the communication input/output interface module is configured to be connected to a power supply of the analog power interface module, and the power supply is a floating power supply.
Optionally, the plurality of universal analog quantity acquisition interface components are used for acquiring a plurality of the following types of analog quantities: machine side voltage, network side voltage, insulation voltage, filter capacitor current, current transformer current, direct current bus current, machine side current and network side current.
Optionally, the general analog quantity acquisition interface component is further configured to switch control information according to an acquisition object of the controller, and acquire different objects in the analog quantity.
Optionally, the controller or/and the communication input/output interface component is a dual-core chip; alternatively, or in addition, the communication input/output interface component and the controller communicate through low-voltage differential signals.
Optionally, the variable flow control system comprises at least two control devices, each of the at least two control devices being cascaded;
the communication input and output interface assembly of a first control device of the at least two control devices is used for communicating with a main controller of the wind generating set;
the controllers in the other of the at least two control devices are cascaded with the controller in the previous control device through an optical fiber communication interface or a network cable.
In a second aspect, an embodiment of the present application provides a control system of a wind turbine generator system, including a main controller, a monitoring device, and a variable flow control system according to the first aspect; the main controller is connected with the communication input and output interface component of the control device and is used for issuing control parameters to the control device;
the monitoring equipment is connected with the controller of the control device through the super-six network cables so as to acquire the acquired data of the control device and issue a control program to the control device.
In a third aspect, embodiments of the present application provide a wind turbine generator system, including a control system of the wind turbine generator system according to the second aspect.
According to the conversion control system, the controller is connected with the power interface assemblies and the communication input/output interface assemblies respectively, each power interface assembly is used for being connected with the power module of one direct current bus unit and converting the level of a pulse width modulation control signal output by the controller into the level matched with the power module of the direct current bus unit, and the universal analog quantity acquisition interfaces of the controller are connected with the universal analog quantity acquisition interface assemblies one by one, so that each universal analog quantity acquisition interface assembly is used for processing the corresponding acquired analog quantity signal into a signal matched with the universal analog quantity acquisition interface of the controller, the conversion control system is suitable for different analog quantity requirements.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings may be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a variable flow control system provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a control device in a variable flow control system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a control device in a variable flow control system according to another embodiment of the present application;
fig. 4 is a schematic structural diagram of a cascade mode of a variable flow control system according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of another like element in an article or device comprising the element.
In order to solve the problem of the prior art, an embodiment of the present application provides a variable flow control system and a wind turbine generator system, and first, the variable flow control system provided in the embodiment of the present application is introduced below.
Fig. 1 shows a schematic diagram of a variable flow control system according to an embodiment of the present application. As shown in fig. 1, the variable flow control system 10 includes: at least one control device 100, each control device 100 comprising: a controller 101, a power interface component 102, a communication input output interface component 103, and a plurality of general analog acquisition interface components 104.
Referring to fig. 1, the controller 101 is connected to the power interface module 102 and the communication input/output interface module 103, and is connected to the plurality of universal analog acquisition interface modules 104 one by one through a plurality of universal analog acquisition interfaces 1011 of the controller 101. Each power interface assembly 102 is configured to be connected to a power module of one dc bus unit 201, and each dc bus unit 201 may include a plurality of power modules, and referring to fig. 2, each dc bus unit may include a three-phase machine-side power module (including a U-phase power module, a V-phase power module, and a W-phase power module) and a three-phase grid-side power module (including an a-phase power module, a B-phase power module, and a C-phase power module).
Each power interface component 102 is configured to convert a level of the pwm control signal output by the controller 101 into a level matching a power module of the dc bus unit 201; each universal analog acquisition interface component 104 is configured to process the corresponding acquired analog signal into a signal compatible with the universal analog acquisition interface 1011 of the controller 101. Each power interface module can be connected to a brake unit in addition to the power module of the dc bus unit, see fig. 2. The brake unit can be used for preventing the voltage of the direct current bus from being overvoltage, and can be effectively controlled in time when the voltage is overvoltage.
In one example application scenario, referring to fig. 1, the controller 101 may communicate via two power interface components: power interface assembly 102 (1) and power interface assembly 102 (2), with two dc bus units: the power modules of the dc bus unit 201 (1) are connected to synchronously control the two dc bus units by a pwm control signal. Therefore, compared with the technical scheme that different chips are adopted to control different direct current bus units in the related art, the variable current control system provided by the embodiment of the application can synchronously control two direct current bus units through the dual-core chip, and the technical problem of poor synchronism when two chips are respectively controlled in the related art is solved.
It will be appreciated that in the case where there is no need to control two dc bus units, control may be performed in connection with only one dc bus unit. The controller can control the power modules of the connected direct current bus units through the power interface assembly, and can acquire fault signals and temperature acquisition signals of each phase of power module through the power interface assembly.
Optionally, the power modules of the dc bus unit include a three-phase machine side power module and a three-phase network side power module, and each power interface component is configured to be connected to each phase power module of the dc bus unit through a cable based on the D-sub standard.
The converter control system of the embodiment of the application is characterized in that a controller is respectively connected with a power interface component and a communication input/output interface component, each power interface component is used for being connected with a power module of a direct current bus unit and converting the level of a pulse width modulation control signal output by the controller into a level matched with the power module of the direct current bus unit, and a plurality of universal analog quantity acquisition interfaces of the controller are connected with a plurality of universal analog quantity acquisition interface components one by one, so that each universal analog quantity acquisition interface component is used for processing a corresponding acquired analog quantity signal into a signal matched with the universal analog quantity acquisition interface of the controller, the converter control system is suitable for different analog quantity requirements, when the analog quantity requirements change, the controller does not need to be modified and designed again, and the adaptability of the converter control system to different power analog quantities is improved.
Optionally, a plurality of generic analog acquisition interface components may be used to acquire a plurality of the following types of analog quantities: machine side voltage, network side voltage, insulation voltage, filter capacitor Current, current Transformer (CT) Current, direct Current bus Current, machine side Current, network side Current. The general analog quantity acquisition interface component can also switch control information according to the acquisition object of the controller so as to acquire different objects in the analog quantity.
Fig. 2 is a block diagram of a control device in a variable flow control system according to an embodiment of the present application, where reference may be made to fig. 2 for one connection manner between an analog quantity acquisition interface component and the analog quantity.
Optionally, the controller and/or the communication input/output interface component may be a dual-core chip. Illustratively, a dual-core ZynQ chip may be employed. Of course, other similar chips, such as STM32, MCU, FPGA, etc., may also be used. In the conversion control system provided by the embodiment of the application, only the dual-core chip used by the controller and the communication input/output interface component needs to write programs, and the other interface components do not need programs, so that the problem that the number of programs is large due to the fact that programs need to be written for different components in the related art is solved.
Referring to fig. 3, taking an XC7Z020+ AD7616 model in which the controller adopts a dual-core ZynQ chip as an example, the controller can realize functions of acquiring ± 10V analog quantity, outputting a Pulse Width Modulation (PWM) signal for driving the power module and the braking unit, acquiring a fault signal and temperature of the power module and the braking unit, performing operation control, storing a fault, and the like, and meanwhile, the controller has a 100M optical fiber communication interface, and can be used for cascading a plurality of physical cabinets to adapt to a higher power level requirement. The J1-J6 pins of the controller chip adopt a universal bidirectional input and output interface and can transmit 5V signals. Each analog quantity acquisition interface component connected with the J11-J18 pins can acquire 4 paths of analog quantity, and in addition, one path of bidirectional IO pin can be connected with the general input/output interface component and can be configured according to requirements.
In an optional embodiment, the communication input/output interface component may be connected to a power supply of the analog power interface component, where the power supply is a floating power supply, which solves the problem of isolation between the converter control system and the whole wind turbine generator system, and thus may implement centralized power supply by using the analog quantity signal input to the connection. Therefore, the electrical isolation degree of the control device can be improved, the use of optical fiber cables in communication between the inside and the outside of the control device is reduced, and the cost is saved.
The connection and communication within and between the interior and the exterior of the streamer control system in some alternative embodiments will now be described by way of example with reference to figures 1 and 2:
referring to fig. 1 and fig. 2, communication between the communication input/output (IO) interface component and the controller may be through Low-Voltage Differential Signaling (LVDS), and may specifically be through a super-six-type network cable; alternatively, other communication means such as CAN, RS485, ethernet, etc. may be used. The main controller (which can be arranged in the main control cabinet during specific operation) of the wind generating set can be communicated with the communication input/output interface assembly through a DP cable, and the communication input/output interface assembly and the controller can be connected through the DP cable. The monitoring interface of the monitoring equipment of the wind generating set can be communicated with the controller in a Local Area Network (LAN) communication mode, and specifically can be connected through a super-six-type network cable. The communication input/output interface assembly and the relay interface assembly can be connected through an electric cable. The controller and the analog quantity acquisition interface assemblies, the controller and the power interface assembly, and the power interface assembly and each power module of the direct current bus unit can be connected and communicated through the Dsub cable. And a plurality of analog quantity acquisition interface components and each voltage, current measurement point/sensor then can be connected through the electric cable, refer to fig. 2, communication input output interface component and following components are connected through the electric cable: the Temperature and humidity sensor comprises a pressure sensor, a Temperature and humidity sensor, a 24V power supply, a control signal of the 24V power supply, a Negative Temperature Coefficient (NTC) resistance analog Input interface and a Digital signal Input (DI) interface.
Alternatively, the variable flow control system may include at least two control devices, each of the at least two control devices may be cascaded, the at least two control devices may include a first control device and other control devices, the communication input and output interface assembly of the first control device is used for communicating with the main controller of the wind turbine generator system, and the controllers of the other control devices are cascaded with the controllers of the previous control devices through optical fiber communication interfaces or network cables.
Referring to fig. 4, each control device in the variable flow control system may be disposed in a control cabinet, the control cabinet 1 is in communication with a main controller and a monitoring device of the wind turbine generator system, and a next-stage control cabinet 2 of the control cabinet 1 is connected to the control cabinet 1, and so on. The cascade communication mode among the multiple control cabinets can be realized by using optical fiber communication, network cables and other communication modes.
In the variable flow control system provided in the embodiment of the present application, the number of communication nodes when two adjacent stages of control devices are cascaded is 1, which reduces the number of communication nodes compared to a cascading manner in the related art.
The embodiment of the application also provides a control system of the wind generating set, which comprises a main controller, a monitoring device and the variable flow control system provided by the embodiment of the application.
The main controller is connected with a communication input/output interface component of the control device and is used for issuing control parameters to the control device; the monitoring equipment is connected with the controller of the control device through the super-six network cables so as to acquire the acquired data of the control device and issue a control program to the control device.
The embodiment of the application also provides a wind generating set, which comprises the control system of the wind generating set provided by the embodiment of the application.
The functional blocks shown in the above schematic diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include an electronic circuit, a semiconductor memory device, a ROM, a flash memory, an Erasable ROM (EROM), a floppy disk, a CD-ROM, an optical disk, a hard disk, an optical fiber medium, a Radio Frequency (RF) link, and so forth.
The foregoing is only an embodiment of the present application, and it should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application.
Claims (9)
1. A variable flow control system, comprising: at least one control device, each control device comprising: the controller, power interface module, communication input/output interface module to and a plurality of general analog quantity acquisition interface module, wherein:
the controller is respectively connected with the power interface assembly and the communication input/output interface assembly and is connected with the universal analog quantity acquisition interface assemblies one by one through a plurality of universal analog quantity acquisition interfaces of the controller;
each power interface component is used for being connected with a power module of one direct current bus unit and converting the level of a pulse width modulation control signal output by the controller into a level matched with the power module of the direct current bus unit;
each universal analog quantity acquisition interface component is used for processing the corresponding acquired analog quantity signals into signals matched with the universal analog quantity acquisition interface of the controller.
2. The variable current control system according to claim 1, wherein said controller is configured to connect to power modules of two said dc bus units via two said power interface assemblies, respectively, to control said two dc bus units synchronously via said pwm control signal.
3. The variable current control system according to claim 1, wherein the power modules of the dc bus unit include a three-phase machine side power module and a three-phase grid side power module, each of the power interface assemblies being configured to connect with each phase power module of the dc bus unit via a cable based on the D-sub standard.
4. The variable flow control system of claim 3 wherein the controller is further configured to collect fault signals and temperature collection signals for each phase of the power module via the power interface assembly.
5. The variable flow control system according to claim 1, wherein the communication input/output interface module is configured to be connected to a power supply of the analog power interface module, and the power supply is a floating power supply.
6. The variable flow control system according to claim 1 wherein the plurality of universal analog acquisition interface components are adapted to acquire a plurality of the following types of analog quantities: machine side voltage, network side voltage, insulation voltage, filter capacitor current, current transformer current, direct current bus current, machine side current and network side current.
7. The variable flow control system according to claim 1, wherein the controller or/and the communication input/output interface component is a dual-core chip; or/and the communication input/output interface component and the controller communicate through a low-voltage differential signal.
8. The variable flow control system according to any of claims 1 to 7, characterized in that it comprises at least two control devices, each of which is cascaded;
the communication input and output interface assembly of the first control device of the at least two control devices is used for communicating with the main controller of the wind generating set;
and the controllers in the other control devices of the at least two control devices are cascaded with the controller in the previous control device through an optical fiber communication interface or a network cable.
9. A wind park comprising a variable flow control system according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220243744.6U CN217880029U (en) | 2022-01-29 | 2022-01-29 | Variable-current control system and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220243744.6U CN217880029U (en) | 2022-01-29 | 2022-01-29 | Variable-current control system and wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217880029U true CN217880029U (en) | 2022-11-22 |
Family
ID=84049574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220243744.6U Active CN217880029U (en) | 2022-01-29 | 2022-01-29 | Variable-current control system and wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217880029U (en) |
-
2022
- 2022-01-29 CN CN202220243744.6U patent/CN217880029U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107017836A (en) | A kind of photovoltaic generating system and its component IV curved scanning methods | |
| CN103248126B (en) | Photovoltaic case becomes intelligent protection supervising device | |
| CN107248748B (en) | Unbalanced reactive compensation intelligent capacitor and method thereof | |
| CN103454552A (en) | Transformer winding deformation on-line monitoring chip | |
| CN217880029U (en) | Variable-current control system and wind generating set | |
| CN204205923U (en) | Wind-powered electricity generation Variable flow control system | |
| CN103490797A (en) | Intelligent communication system based on power lines | |
| CN111707886A (en) | Micro-grid energy storage converter demonstration test platform | |
| CN216530442U (en) | Intelligent small bus plugging box of data center | |
| CN213780335U (en) | System for realizing outgoing line leakage current detection of high-voltage switch cabinet | |
| CN210599275U (en) | Wind power pitch control system | |
| CN212229453U (en) | Configurable intelligent remote measurement and control system of hydraulic power plant | |
| CN105720795A (en) | Wind power conversion control system | |
| CN109245159B (en) | Multi-inverter parallel system suitable for micro-grid | |
| CN111555167A (en) | Box-type substation and photovoltaic power generation system | |
| CN207559667U (en) | A kind of DC energy source router | |
| CN207304002U (en) | A kind of DC energy source router with multi input end | |
| CN220692997U (en) | Three-phase power phase-failure isolation detection circuit | |
| CN216599130U (en) | Intelligent monitoring system for photovoltaic power generation unit | |
| CN217462412U (en) | Communication system of wind turbine generator and wind turbine generator | |
| CN209044329U (en) | A kind of converter cabinet is controlled with IO and AD acquires set composite | |
| CN217008200U (en) | Universal input/output interface component board card, converter and wind generating set | |
| CN217080693U (en) | Wind power generation equipment monitoring devices | |
| CN215733991U (en) | Power control module | |
| CN219935992U (en) | Power detection device for facility fault analysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |