CN207782475U - The standby power system of wind generating set pitch control system - Google Patents

The standby power system of wind generating set pitch control system Download PDF

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Publication number
CN207782475U
CN207782475U CN201820161718.2U CN201820161718U CN207782475U CN 207782475 U CN207782475 U CN 207782475U CN 201820161718 U CN201820161718 U CN 201820161718U CN 207782475 U CN207782475 U CN 207782475U
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China
Prior art keywords
super capacitor
charger
power
wind
control unit
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CN201820161718.2U
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李锋
苏理
姬晓峰
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Beijing Gold Wind Technology Co Ltd Huineng
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Beijing Gold Wind Technology Co Ltd Huineng
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects

Abstract

The utility model provides a kind of standby power system of wind generating set pitch control system.The standby power system includes:Control unit, super capacitor, the charger for charging to super capacitor, power switcher;Wherein, control unit is separately connected charger and super capacitor, and control unit controls charger and charges to super capacitor;Wherein, wind generating set pitch control system is connected to super capacitor via power switcher, when main power source breaks down, super capacitor is powered by power switcher direction wind-driven generator group pitch-controlled system.The standby power system of wind generating set pitch control system according to the present utility model can make wind power generating set operation more stable and reliable.

Description

The standby power system of wind generating set pitch control system
Technical field
The utility model is related to technical field of wind power generation, more particularly, are related to a kind of wind generating set pitch control system The standby power system of system.
Background technology
Pitch-controlled system is the key link for ensureing wind power generating set general safety.When electric network state is normal, pitch-controlled system The electric energy needed is mainly provided by three-phase AC grid;When grid cut-off or occur low voltage crossing when, by stand-by power supply Lai Energy is provided, is powered directly to pitch-controlled system, under the premise of ensureing a whole set of variable pitch electric-control system internal circuit normal work, is made Blade feathering is to home.
Currently, due to advantage at low cost, lead-acid accumulator is widely used in grid-connected wind power set pitch control system Stand-by power supply.But since lead-acid accumulator has the shortcomings that the easy affected by the high temperature and charging time is considerably long so that wind For power generator group in operation 2-3, some just frequently quote standby power system dependent failure when even only running 1 year, to Lead to entire wind park batch replacement lead-acid accumulator, seriously affects gene-ration revenue.
It can ensure economic benefit and the high standby power system of reliability therefore, it is necessary to a kind of.
Utility model content
The purpose of this utility model is that in view of the problems of the existing technology, proposing a kind of wind-force that will have been put into operation The standby power system of generating set pitch-controlled system replaces with the technical solution of super capacitor standby power system.
One side according to the present utility model provides a kind of standby power system of wind generating set pitch control system, It is characterised in that it includes:Control unit, super capacitor, the charger for charging to super capacitor, power switcher; Wherein, control unit is separately connected charger and super capacitor, and control unit controls charger and charges to super capacitor;Wherein, Wind generating set pitch control system is connected to super capacitor via power switcher, when main power source breaks down, super electricity Hold and is powered by power switcher direction wind-driven generator group pitch-controlled system.
Preferably, control unit sends what instruction stopping charged to super capacitor when main power source breaks down to charger Signal.
Preferably, power switcher can be diode, wherein the anode of the diode is connected to super capacitor, wind-force The power supply interface of generating set pitch-controlled system is connected to the cathode and main power source of the diode.
Preferably, control unit sends to charger in response to the information that the super capacitor that is received from charger is full of and indicates The signal of floating charging, and the abnormal letter of output voltage of the charger in response to being received from charger are carried out to super capacitor It ceases to charger and sends the signal that instruction stopping charges to super capacitor.
Preferably, the standby power system can further include:Monitoring unit may be connected to control unit, in response to inspection The temperature of super capacitor is measured beyond threshold value, generation reversed polarity or overvoltage, fault-signal is sent to control unit.
Preferably, charger may be provided in the first cabinet of wind power generating set, and super capacitor may be provided at wind-force hair In second cabinet of motor group.
Preferably, the wind power generating set can be doubly fed wind turbine generator.
The standby power system of wind generating set pitch control system according to the present utility model can make wind power generating set It runs more stable and reliable.It, can be in addition, the standby power system of wind generating set pitch control system according to the present utility model Super capacitor is applied to the standby power system of existing wind generating set pitch control system by lower cost, to be transformed Upgrading.
Description of the drawings
The detailed description of the utility model, the features described above and other purposes of the utility model are carried out below in conjunction with attached drawing And advantage will become apparent, wherein:
Fig. 1 shows the knot of the standby power system of the wind generating set pitch control system of embodiment according to the present utility model Structure block diagram;
Fig. 2 shows the schematic diagrames of the super capacitor of embodiment according to the present utility model.
Specific implementation mode
This practicality of the description to help comprehensive understanding to be limited by claim and its equivalent referring to the drawings is provided Novel exemplary embodiment.In the accompanying drawings, identical label always shows identical component.
Fig. 1 shows the knot of the standby power system of the wind generating set pitch control system of embodiment according to the present utility model Structure block diagram.
As shown in Figure 1, the standby power system 100 according to one embodiment may include:Control unit 10, super capacitor 20, the charger 30 and power switcher 40 for charging to super capacitor 20.Control unit 10 is separately connected charging Device 30 and super capacitor 20, control unit 10 control charger 30 and charge to super capacitor 20.It can be incited somebody to action via power switcher 40 Wind generating set pitch control system is connected to super capacitor 20, and when main power source breaks down, super capacitor 20 is cut by power supply 40 direction wind-driven generator group pitch-controlled system of parallel operation is powered.Also, wind generating set pitch control system is also connected by DC bus L To the main power source of wind power generating set, wherein main power source can be the DC power supply for wind generating set pitch control system, main Power supply provides the DC voltage that the alternating voltage exported by AC power generates after three phase rectifier for variable pitch driver.
Control unit 10 may include various types of control assemblies.For example, control unit 10 can be central controller (CPU).Control unit 10 may be connected to charger 30.Here, charger 30 can be for charging to super capacitor 20 Various chargers.For example, charger 30 is alternatively referred to as super capacitor charger.
When main power source (hereinafter referred to as main power source) normal operating of wind power generating set, the controllable charging of control unit 10 Device 30 charges to super capacitor 20.For example, before wind power generating set opens machine, charger 30 can be in the control of control unit 10 Under system, quick charge is carried out to super capacitor 20.When the voltage of super capacitor 20 reaches rated value, super capacitor 20 can be recognized To have been filled with, at this point, meet wind power generating set opens machine condition.Then, charger 30 can be used for carrying out super capacitor 20 Floating charging.Here, floating charging refer to by charger 30 to super capacitor 20 carry out boost charge, with supplement super capacitor 20 from Electric discharge makes super capacitor 20 be in spare with the state of full capacity.
Control unit 10 may be in response to the information being full of from the super capacitor 20 that charger 30 receives, and be sent to charger 30 Indicate the signal to the progress floating charging of super capacitor 20, and the output voltage of the charger 30 in response to being received from charger 30 Abnormal information sends instruction to charger 30 and stops the signal charging to super capacitor 20.
For example, control unit 10 can receive the information and instruction charger that instruction super capacitor 20 has been filled with from charger 30 The 30 abnormal information of output voltage.When receiving the information that instruction super capacitor 20 has been filled with, control unit 10 can be to Charger 30 sends signal to indicate that charger 30 carries out super capacitor 20 above-mentioned floating charging.When receiving instruction charger When the information of 30 output voltage abnormal (for example, charger failure), control unit 10 can be sent to charger 30 to be believed Number with indicate charger 30 stop to super capacitor 20 charge.At this point, control unit 10 can be according to receiving from charger 30 Information generates corresponding fault message.
Stop to super capacitor 20 in addition, control unit 10 can send instruction when main power source breaks down to charger 30 The signal of charging.For example, when main power source breaks down (for example, main power source power down or quality dependent failure occur), control is single Member 10 can send signal to indicate that charger 30 stops charging to super capacitor 20 to charger 30.For example, at this point, control unit 10 can send signal to turn off the charger 30 to charger 30.Control unit 10 can from charger 30 receive about operating temperature, The status information of output voltage etc., and generate corresponding fault message.
As described above, the pitch-controlled system of wind power generating set can be connected to super capacitor 20 via power switcher 40, When main power source breaks down, super capacitor 20 is powered by power switcher 40 to pitch-controlled system.
Specifically, the pitch-controlled system of wind power generating set can be connected to super capacitor 20 by power switcher 40.When When main power source does not break down, pitch-controlled system can be connected to main power source by DC bus L, to be supplied from main power source to pitch-controlled system Electricity.When main power source breaks down (for example, main power source power down or quality dependent failure occur), power switcher 40 can be by variable pitch System is connected to super capacitor 20, and the connection of main power source and pitch-controlled system is disconnected, using by super capacitor 20 as standby electricity Source powers to pitch-controlled system.Therefore, it may make the blade of pitch-controlled system when the main power source of wind power generating set breaks down still So can feathering to home, to ensure wind power generating set reliability of operation.
Power switcher 40 can be that by the various assemblies (for example, switch) of power supply handoff functionality.As one Embodiment, power switcher 40 can be diodes.At this point, the anode of diode may be connected to super capacitor 20, and variable pitch system The power supply interface of system may be connected to the cathode and main power source of diode.When main power source normal (not breaking down), at diode In reverse blocking state, therefore main power source is connected to pitch-controlled system via DC bus L, is powered from main power source to pitch-controlled system. When mains power failure, since super capacitor has been filled with electricity, voltage reaches rated value, and diode is switched on, therefore super capacitor 20 are connected to pitch-controlled system, are powered from super capacitor 20 to pitch-controlled system.However, the utility model is without being limited thereto, power supply switching Device 40 can be other assemblies.
As shown in Figure 1, standby power system 100 can further include monitoring unit 50.It is single that monitoring unit 50 may be connected to control Member 10 is sent out with the temperature in response to detecting super capacitor 20 beyond threshold value, generation reversed polarity or overvoltage to control unit 10 Send fault-signal.
For example, monitoring unit 50 may be connected to super capacitor 20, include temperature, polarity with detect super capacitor 20 in real time Deng status information.If the temperature of super capacitor 20 exceeds preset threshold value, or reversed polarity or overvoltage occurs, then supervise Control unit 50 can send relevant fault-signal to the control unit 10 of connection, to notify control unit 10 in time.According to another Embodiment, monitoring unit 50 may also include in the control unit 10.
According to one embodiment, charger 30 may be provided in the first cabinet of wind power generating set, and super capacitor 20 can It is arranged in the second cabinet of wind power generating set.Here, the first cabinet can be different from the second cabinet.
Specifically, since various stand-by power supplies can have different volumes, so existing stand-by power supply cabinet may not Therefore being suitable for placement super capacitor charger charger 30 can be arranged in the first cabinet of wind power generating set, and Different from placing super capacitor 20 in the second cabinet of the first cabinet.Here, the second cabinet can be place originally use it is standby With the cabinet of power supply (for example, lead-acid accumulator).That is, super capacitor 20 and charger 30 can be separated, it is placed on In different cabinets.
Wind power generating set in the utility model can be doubly fed wind turbine generator.For example, SL1500 wind-force is sent out Motor group is doubly-fed variable-speed constant-frequency wind power generating set, and using lead-acid accumulator as stand-by power supply, battery cupboard is positioned over machine Cabin tail portion provides energy by slip ring to pitch-controlled system.The embodiments of the present invention are proposed for the characteristics of SL1500 units Super capacitor module (that is, super capacitor 20) can be arranged in cabin for the scheme of charging system and the phase separation of super capacitor module In the capacitor box of tail portion, and will be in super capacitor charger (that is, charger 30) setting in the cabin 300 cabinets in portion.However, this Merely illustrative, the utility model is without being limited thereto.
The structure design of super capacitor and super capacitor charger explained below.
Fig. 2 shows the schematic diagrames of the super capacitor of embodiment according to the present utility model.
As shown in Fig. 2, super capacitor 20 according to the embodiment may include six super capacitor module C.Six super capacitors Module C may be configured as following connection type:Three super capacitor module C are a line, often three super capacitor module C strings of row Connection, and two row parallel connections.There are certain intervals (for example, 10 millimeters) each other by six super capacitor module C, so as to air Circulation.
The cabinet (for example, capacitor box) of super capacitor can be configured to bottom and two, top by horizontal mounting plate is arranged Point.Above-mentioned super capacitor module may be provided at bottom.The top of cabinet can install various devices, for example, main electric connecting terminals, letter Number connecting terminal, capacitance protection fuse, fan protection breaker etc..However, the utility model is without being limited thereto.As an example, For the ease of the maintenance of super capacitor module, multiple services apertures can be set in the top of cabinet, for passing through services aperture pair Super capacitor module carries out the operations such as voltage, signal measurement and secondary connection.Cabinet side can also be installed for air circulation Fan, the other side of cabinet can be used as line outlet.
In order to fix charger in the cabinet of super capacitor charger, support beam and fixed group are may include in cabinet Part.The size of support beam can be arranged according to the size of super capacitor charger.Fixation kit may be configured as including two knots The symmetrical Z-shaped fastener of structure.Through-hole can be set on each Z-shaped fastener, for by the position of fixation kit in the horizontal direction It adjusts.It may also set up through-hole in the middle part of fixation kit, the charger for adapting to different in width.
The standby power system of wind generating set pitch control system according to the present utility model can reduce stand-by power supply Failure rate improves wind power generating set reliability of operation.In addition, wind generating set pitch control system according to the present utility model Standby power system, can at lower cost by super capacitor be applied to existing wind generating set pitch control system it is spare Power-supply system, to be transformed upgrading.
Although some example embodiments have been shown and described, it will be appreciated by those skilled in the art that not taking off In the case of from the principles of the present invention and spirit, it can modify to these example embodiments, the model of the utility model It encloses and is limited by claim and its equivalent.

Claims (7)

1. a kind of standby power system of wind generating set pitch control system, which is characterized in that including:Control unit, super electricity Appearance, the charger for charging to super capacitor, power switcher;
Wherein, control unit is separately connected charger and super capacitor, and control unit controls charger and charges to super capacitor;
Wherein, wind generating set pitch control system is connected to super capacitor via power switcher, when main power source breaks down When, super capacitor is powered by power switcher direction wind-driven generator group pitch-controlled system.
2. standby power system as described in claim 1, which is characterized in that control unit is when main power source breaks down to filling Electric appliance sends instruction and stops the signal charging to super capacitor.
3. standby power system as described in claim 1, which is characterized in that power switcher is diode, wherein described two The anode of pole pipe is connected to super capacitor, and the power supply interface of wind generating set pitch control system is connected to the cathode of the diode And main power source.
4. standby power system as described in claim 1, which is characterized in that control unit is super in response to what is received from charger The information that is full of of grade capacitance sends the signal that instruction carries out super capacitor floating charging to charger, and in response to from charger The abnormal information of output voltage of the charger of reception sends instruction to charger and stops the signal charging to super capacitor.
5. standby power system as described in claim 1, which is characterized in that further include:It is single to be connected to control for monitoring unit Member sends failure with the temperature in response to detecting super capacitor beyond threshold value, generation reversed polarity or overvoltage to control unit Signal.
6. standby power system as described in claim 1, which is characterized in that charger is arranged the first of wind power generating set In cabinet, super capacitor is arranged in the second cabinet of wind power generating set.
7. the standby power system as described in any one of claim 1-6, which is characterized in that the wind power generating set is Doubly fed wind turbine generator.
CN201820161718.2U 2018-01-30 2018-01-30 The standby power system of wind generating set pitch control system Active CN207782475U (en)

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CN201820161718.2U CN207782475U (en) 2018-01-30 2018-01-30 The standby power system of wind generating set pitch control system

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Application Number Priority Date Filing Date Title
CN201820161718.2U CN207782475U (en) 2018-01-30 2018-01-30 The standby power system of wind generating set pitch control system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110080942A (en) * 2019-04-30 2019-08-02 固安华电天仁控制设备有限公司 A kind of wind generating variable-propeller control system
CN110875594A (en) * 2018-08-31 2020-03-10 北京金风科创风电设备有限公司 Wind generating set and standby redundant power supply system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110875594A (en) * 2018-08-31 2020-03-10 北京金风科创风电设备有限公司 Wind generating set and standby redundant power supply system thereof
CN110080942A (en) * 2019-04-30 2019-08-02 固安华电天仁控制设备有限公司 A kind of wind generating variable-propeller control system

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