CN208209537U - A kind of wind-powered electricity generation sub-synchronous oscillation monitoring regulating system - Google Patents
A kind of wind-powered electricity generation sub-synchronous oscillation monitoring regulating system Download PDFInfo
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- CN208209537U CN208209537U CN201820410697.3U CN201820410697U CN208209537U CN 208209537 U CN208209537 U CN 208209537U CN 201820410697 U CN201820410697 U CN 201820410697U CN 208209537 U CN208209537 U CN 208209537U
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Abstract
The utility model provides a kind of wind-powered electricity generation sub-synchronous oscillation monitoring regulating system, comprising: wind turbine, with rotor blade；Monitoring unit, for monitoring wind-powered electricity generation sub-synchronous oscillation parameter, comprising: wind-powered electricity generation monitoring modular, for monitoring wind-powered electricity generation field parameters；With power network monitoring module, for monitoring electrical network parameter；Processing unit is communicated to connect with monitoring unit；Remote monitoring unit is communicated to connect with processing unit；Power converter adjusts the frequency being connected to the grid and voltage in response to the monitoring data of monitoring unit, processing unit and remote monitoring unit.The utility model can be realized real-time, comprehensive and intelligent wind-powered electricity generation sub-synchronous oscillation monitoring, and can realize the adjusting to wind-powered electricity generation sub-synchronous oscillation, to guarantee the safety and stabilization of wind-powered electricity generation circuit.
Description
Technical field
The utility model relates to wind-powered electricity generation control fields, monitor regulating system more particularly to a kind of wind-powered electricity generation sub-synchronous oscillation.
Background technique
Large-scale wind power is handed in retroactively galvanic electricity mode and be connected to the grid by string can effectively improve ability to transmit electricity, however, working
Sub-synchronous oscillation can be led to the problem of in the process, and sub-synchronous oscillation will cause blower off-grid or equipment damage, to cause huge
Economic loss, in the prior art, for wind-powered electricity generation sub-synchronous oscillation monitoring mainly by modes such as experience, historical datas, so
The relevant parameter for calculating sub-synchronous oscillation afterwards handles sub-synchronous oscillation problem, this mode, low efficiency further according to relevant parameter
Under, real-time is low, although reduce sub-synchronous oscillation problem to a certain extent, since sub-synchronous oscillation draws
The wind-powered electricity generation accident risen still emerges one after another.
It is, therefore, desirable to provide a kind of wind-powered electricity generation sub-synchronous oscillation monitors system, wind-powered electricity generation sub-synchronous oscillation can be caused to wind-powered electricity generation
Relevant parameter carry out accurate measurements, export monitoring data in real time, thus guarantee wind-powered electricity generation sub-synchronous oscillation monitoring accuracy, energy
Enough consistent measures for accurately instructing sub-synchronous oscillation system, it is ensured that wind-power electricity generation is continually and steadily run.
In addition, with greater need for one kind can real-time, intelligentized regulating system, can be realized to the circuit of wind turbine into
Row adjust, to avoid occur wind-powered electricity generation sub-synchronous oscillation a possibility that.
Utility model content
In view of the above problems, the utility model is proposed to solve the above problems in order to provide one kind or at least partly solve
Certainly the wind-powered electricity generation sub-synchronous oscillation of the above problem monitors regulating system.
A kind of wind-powered electricity generation sub-synchronous oscillation provided by the utility model monitors regulating system, comprising:
Wind turbine, with rotor blade and the generator for being pivotably coupled to the rotor blade；
Monitoring unit, for monitoring wind-powered electricity generation sub-synchronous oscillation parameter, comprising:
Wind-powered electricity generation monitoring modular, for monitoring wind-powered electricity generation field parameters, including wind-powered electricity generation voltage sensor, wind-powered electricity generation current sensor, wind
Electric frequency sensor, air velocity transducer, the torque sensor of torque for monitoring the generator and described for monitoring
The speed probe of the revolving speed of generator；With power network monitoring module, for monitoring electrical network parameter, including grid voltage sensor,
Power network current sensor and mains frequency sensor；
Processing unit is communicated to connect with the monitoring unit；
Remote monitoring unit is communicated to connect with the processing unit；
Power converter, in response to the monitoring number of the monitoring unit, the processing unit and the remote monitoring unit
According to adjusting the frequency being connected to the grid and voltage.
Further, the power converter includes one in full conversion power converter and part conversion power converter
It is a.
Further, the generator includes one in double fed induction generators, influence generator and synchronous generator.
Further, the processing unit includes: pretreatment circuit, is connect with the monitoring unit；Processing server, with
The pretreatment circuit communication connection；Storage server, with the processing server communicate to connect, and the processing server with
The remote monitoring unit communication connection.The processing unit further include: prewarning unit comprising connect with the processing server
The input keyboard connect, the display being connect with the processing server and the sound-light alarm being connect with the processing server
Device.
Further, the pretreatment circuit includes sequentially connected amplifying circuit, filter circuit and analog-to-digital conversion electricity
Road, the input terminal of the amplifying circuit are connect with the output end of the monitoring unit, the output end of analog-digital conversion circuit as described with
The processing server connection.
Further, the remote monitoring unit include with the processing unit communication connection long-range processing server with
And the remote storage server with the long-range processing server communication connection；The remote monitoring unit further includes distant early warning
Unit, the distant early warning unit include the remote input keyboard connecting with the long-range processing server and the long-range place
The remote display of reason server connection and the long-range combined aural and visual alarm being connect with the long-range processing server.
The utility model has the beneficial effect that
The wind-powered electricity generation sub-synchronous oscillation monitoring regulating system of one kind provided by the utility model can cause wind-powered electricity generation to wind-powered electricity generation
The relevant parameter of synchronized oscillation carries out accurate measurements, exports monitoring data in real time, to guarantee the monitoring of wind-powered electricity generation sub-synchronous oscillation
Accuracy can accurately instruct the consistent measure of sub-synchronous oscillation system, it is ensured that wind-power electricity generation is continually and steadily run.
Detailed description of the invention
Fig. 1 is the schematic block diagram that a kind of wind-powered electricity generation sub-synchronous oscillation monitors that regulating system monitors regulating system.
Specific embodiment
Fig. 1 is the principles of the present invention block diagram, as shown in Figure 1.The embodiments of the present invention provide a kind of wind-powered electricity generation
Subsynchronous concussion monitors regulating system, may include wind turbine, monitoring unit, processing unit, remote monitoring unit and function
Rate converter 10.Wherein, wind turbine can have rotor blade and be pivotably coupled to the generator of rotor blade.
Monitoring unit may include wind-powered electricity generation monitoring modular and power network monitoring module for monitoring wind-powered electricity generation sub-synchronous oscillation parameter.Wind-powered electricity generation prison
Module is surveyed for monitoring wind-powered electricity generation field parameters, may include wind-powered electricity generation voltage sensor 900, wind-powered electricity generation current sensor 300, wind-powered electricity generation frequency
Sensor 800, air velocity transducer 500, the torque sensor 600 of torque for monitoring generator and for monitoring generator
Revolving speed speed probe 700.Wind-powered electricity generation monitoring modular may include wind-powered electricity generation voltage sensor for monitoring wind-powered electricity generation field parameters
900, wind-powered electricity generation current sensor 300, wind-powered electricity generation frequency sensor 800, air velocity transducer 500, torque for monitoring generator
The speed probe 700 of torque sensor 600 and the revolving speed for monitoring generator.Power network monitoring module is for monitoring power grid
Parameter may include grid voltage sensor 200, power network current sensor 400 and mains frequency sensor 100.Also, locate
It manages unit and monitoring unit communicates to connect, remote monitoring unit and processing unit communicate to connect.By causing wind-powered electricity generation to wind-powered electricity generation
The relevant parameter of synchronized oscillation carries out accurate measurements, exports monitoring data in real time, to guarantee the monitoring of wind-powered electricity generation sub-synchronous oscillation
Accuracy can accurately instruct the consistent measure of sub-synchronous oscillation system, it is ensured that wind-power electricity generation is continually and steadily run.Monitoring unit
Including the wind-powered electricity generation monitoring modular for monitoring wind-powered electricity generation field parameters and the power network monitoring module for monitoring electrical network parameter；The wind-powered electricity generation
Monitoring modular includes wind-powered electricity generation voltage sensor 900, wind-powered electricity generation current sensor 300, wind-powered electricity generation frequency sensor 800, air velocity transducer
500, the revolution speed sensing for monitoring the torque sensor 600 of wind turbine torque and for monitoring wind turbine revolving speed
Device 700；The power network monitoring module includes grid voltage sensor 200, power network current sensor 400 and mains frequency sensing
Device 100 can cause the relevant parameter of wind-powered electricity generation sub-synchronous oscillation to carry out accurate measurements to wind-powered electricity generation, export monitoring data in real time, from
And guarantee the accuracy of wind-powered electricity generation sub-synchronous oscillation monitoring, it can accurately instruct the braking measure of sub-synchronous oscillation system, it is ensured that wind
The power generation continuous stable operation of power, certainly, each sensor among the above can be set multiple, form multiple test points,
In, the tach signal and dtc signal of torque sensor 600 and the acquisition wind turbine of speed probe 700, processing service
Device controls the corresponding instruction of pitch controller output of blower according to dtc signal tach signal, processing server according to wind speed,
Revolving speed, wind-powered electricity generation voltage signal, wind-powered electricity generation current signal calculate wind power signal, then according to wind power signal to determine whether
Time oscillation is generated, wind-powered electricity generation frequency sensor 800 is for being monitored the actual frequency of wind-powered electricity generation, according to calculating power, practical frequency
Rate and calculating frequency determine time oscillation Producing reason jointly, it is ensured that the accuracy of monitoring result；Processing server is according to power grid
Voltage, power network current and mains frequency and above-mentioned parameter carry out time analysis of the oscillation, and certainly, processing server is in treatment process
In calculation method use existing algorithm, not in this to go forth.
Further, the subsynchronous concussion monitoring regulating system of wind-powered electricity generation may also include power converter 10, single in response to monitoring
Member, the monitoring data of processing unit and remote monitoring unit, adjust the frequency being connected to the grid and voltage.Electricity is carried out based on monitoring
The adjusting of pressure and frequency, avoids leading to the problem of sub-synchronous oscillation.
In some embodiments of the utility model, wind turbine may include for converting wind energy into rotational energy to drive
The rotor blade of the dynamic axis for being connected to gearbox.Wind turbine may also include part structural support, such as pylon and one turn
Sub- directing mechanism.Low speed rotation is converted to high speed rotation by gearbox, as needed for driven generator power generation.Typically,
Multiple wind turbines are located at the common location for being referred to as wind turbine park.
By generator generate electric power be provided to power electronic system with regulator generator output voltage and/or frequency with
It is supplied to the low-pressure side of power grid transformer to be connected to power electronic system and high-pressure side to power grid via step-up transformer.Electric power
Electronic system be it is controllable, with as needed by characteristic assign caused by electric power flowed on power grid with matching or modifying
The characteristic of electric power.According to the embodiment of current utility model, power electronic system can control active power flow and/or voltage
It adjusts, to reduce the sub-synchronous oscillation on power grid.
Different generators is used for different wind turbine applications, including asynchronous (induction) generator (for example, mouse cage,
Wound rotor and double fed induction generators) and synchronous generator (such as wound rotor and magneto alternator).Advantageously, feel
Answer generator relatively easy and cheap, but disadvantageously, stator needs reaction magnetizing current and therefore consumes from electricity
The reactive power of net.
In double fed induction generators (DFIG), the electric power (usually three-phase AC) that utility network provides motivates generator
The winding of stator.The wind drive blade assembly of wind turbine generates mechanical force to rotate armature spindle, such as passes through gear-box.
Magnetizing current and low frequency (sliding) power are supplied to rotor from rotor converter.Rotor converter passes through control rotor current component
To control active power and reactive power.DFIG includes that segment transducer is (usually about complete to turn commonly used in power electronic system
The one third of parallel operation capacity) when use.
Power electronic system is for different turbo-generator installation and application (including rectifier, inverter and frequency converter
(such as back-to-back, more level, series connection, matrix and resonance converter)) use different elements.
The a type of converter of referred to as full converter or back-to-back converter is used in variable speed wind turbines,
Power converter 10 including being connected to generator side is connected to the DC link and power converter 10 of grid side.Full converter
By the input voltage generated by wind turbine (that is, alternating current of fixed frequency), variable frequency alternating current is (due to can be changed wind
Speed) or direct current be converted to desired output frequency and voltage, it provide grid.Usually using insulated gate bipolar transistor
(IGBT), the electrical power conversion that generator-side converter generates generator is direct current and by the energy transmission to DC link.From
DC link provides power to grid side active transducer, is converted to the alternating current of fixed frequency there and is supplied to electricity
Net.
In some embodiments, full converter include for the AC electricity of generation is converted into the generator-side converter of DC and
For filtering the output capacitor of DC electric current.DC electric current is provided to the line for generating the 60Hz AC power for being supplied to power grid
Trackside converter (inverter).The available power from wind turbine is determined by the operation of generator-side converter
Amount.
The utility model relates to the purposes that wind turbine is used to damp the sub-synchronous oscillation on grid.Line side converter
Function identical with STATCOM can be provided, and can further generate effective power in wind turbine operation.One
Real STATCOM, which can produce or absorb, only has reactive power to inhibit sub-synchronous oscillation；It cannot generate or inject reality
Power.Since full converter wind turbine adjusts attribute with all voltages of STATCOM, and it is different from STATCOM
Also it can produce actual power, so entire converter wind turbine can provide the effective damping to sub-synchronous oscillation；?
Perhaps it is preferably damped than the STATCOM of isolated operation.It can be provided always when wind turbine is online from line side current transformer
Reactive power, when wind turbine generate actual power when, can be used actual power damping supplementary functions.
The utility model is provided a kind of new, beneficial wind turbine and is used alone using wind turbine
Voltage adjusts (when wind turbine is online but does not generate effective power) or voltage is adjusted come sub-synchronous oscillation of effectively decaying
Method be aided with active power controller (when steam turbine generates active power or when active power).The utility model can be based on this
Ground or remote voltage, electric current or power measurement and sub-synchronous oscillation voltage of initiatively decaying, electric current and/or oscillation of power.However,
It recognizes the distance due to arriving long-range sub-synchronous oscillation, may can not effectively inhibit this long-range oscillation.According to a reality
Example is applied, the subsynchronous oscillation damping function of wind turbine just works when only local or remotely detecting sub-synchronous oscillation.
The utility model is implemented secondary in the control of wind turbine system side converter (also referred to as line side converter)
Voltage capability is used only (when turbine is online, regardless of whether it is for example, working as wind turbine in synchronized oscillation damping function
Output is due to wind-force deficiency and when actual power generation reduction) or by active power controller (when turbine generates actual power)
The voltage control of supplement generates actual power.Control signal is supplied to line side current transformer by an auxiliary signal and gives voltage tune
Controller is saved to control this function.
One embodiment most in, the injection of real power may need for negative sequence component to be injected into electric system to draw
Starting voltage is uneven, i.e., because voltage has different amplitude or voltage, 120 degree of phase phase difference, oscillation do not hinder each other
Buddhist nun increases.The wind turbine control strategy embodied such as its control algolithm should have enough versatilities, to adapt to be used for
Realize the various controls of subsynchronous oscillation damping.As long as wind turbine is located at the edge of electric system, and most of power trains
System is now currently located in these edges, they, which may not perfectly be located at, provides subsynchronous oscillation damping, because they may not position
Near large power stations or between large power stations.But as they become increasingly prevalent, wind turbine may
Near main generating station or between main power station, such as with the secondary motivation for reducing sub-synchronous oscillation.
One embodiment according to the present utility model, wind turbine and each of include full converter wind turbine
Machine occurs being not provide the voltage-operated device of true energy (such as not generate in wind turbine from the angle of power network
During effective power but the reduction that can be used for regulating system voltage) or the voltage-operated device of true energy is provided (such as works as wind
When power turbine is that power grid generates power).Therefore, entire converter can adjust voltage independently of active power is generated, because
For other than compensation actual resistance loss, voltage adjusting does not need actual energy.Therefore, the case where not generating actual power
Under, entire converter can modulate the phase angle of measured sub-synchronous oscillation voltage to generate the output electricity with phase angle
Pressure, which effectively inhibits the sub-synchronous oscillation on power grid.
Therefore, in addition to power grid supply effective power other than, the wind turbine of suitable control or can provide damping time
The miscellaneous function of synchronized oscillation.If wind turbine does not generate effective power, voltage (voltage phase angle) can be used
It adjusts come sub-synchronous oscillation of decaying.If wind turbine is generating actual power, can be used by actual power tune
The voltage of section supplement is adjusted come sub-synchronous oscillation of decaying.
In some embodiments of the utility model, control the phase angle of voltage with sub-synchronous oscillation of decaying (no matter wind-force whirlpool
Whether turbine is that power grid generates effective power) and voltage is injected into power grid to reduce sub-synchronous oscillation.If Transmission system is
Preferably, i.e., it reacts to pure no resistance, this technology is sufficient.But all true Transmission systems have it is actual
Resistance, therefore, unless otherwise sub-synchronous oscillation voltage cannot completely eliminate by correction voltage by actual power injected system.
In another embodiment of the utility model, wind turbine may include energy storage device, such as battery, surpass
Grade capacitor, superconduction magnetic energy storage device allow wind turbine to execute the voltage that supplement actual power controls and control, practical function
Rate is provided when wind turbine does not generate effective power from storage device.
In some embodiments of the utility model, processing unit include the pretreatment circuit being connect with monitoring unit, with
The processing server that pre-processes circuit connection, the storage server with processing server communication connection, processing server and long-range
Monitoring unit communication connection, wherein pretreatment circuit includes sequentially connected amplifying circuit, filter circuit and analog-to-digital conversion electricity
Road, the input terminal of amplifying circuit and the output end of monitoring unit connect, and the output end and processing server of analog to digital conversion circuit connect
It connects, by this structure, provides accurate reference data for processing server；Processing server receives monitoring unit output
Monitoring parameters accordingly calculate sub-synchronous oscillation parameter by existing algorithm, including at least the frequency of sub-synchronous oscillation
Calculating, blower the parameters such as active power, the reactive power of blower, power grid transmission power, and processing server is to causing
The reason of sub-synchronous oscillation, makes suggestion analysis, and processing server is by measured data, the calculated result of processing server and draws
The reason of playing sub-synchronous oscillation information is sent to long-range processing server, being capable of Real-time Feedback wind-electricity integration by above structure
Real-time parameter when operation, accurately instructs remote control operation, wherein storage server is used for handled by processing server
Data synchronize storage, make reference data in future processing for processing server as historical data.
In the present embodiment, processing unit further includes prewarning unit, and prewarning unit includes the input connecting with processing server
Keyboard, the display connecting with processing server and the combined aural and visual alarm connecting with processing server, pass through this structure, energy
It is enough that the treatment process of processing server is subjected to display monitoring, when the relevant parameter that processing server calculates is there are out-of-limit, such as
Wind turbine to penetrate power out-of-limit, it is convenient to make counter-measure in time then combined aural and visual alarm is alarmed accordingly.
In the present embodiment, remote monitoring unit include with processing unit communication connection long-range processing server and with it is remote
The remote storage server of journey processing server communication connection, wherein remote monitoring unit further includes distant early warning unit, remotely
The long-range display that prewarning unit includes the remote input keyboard connecting with long-range processing server, is connect with long-range processing server
Device and the long-range combined aural and visual alarm connecting with long-range processing server, long-range processing server are used for defeated according to processing server
Data out are further processed, and are presented by display, analyze and make conducive to staff and correctly instruct measure,
Out-of-limit warning message is transferred to long-range processing server simultaneously by processing server, and long-range processing server receives warning message
Afterwards, combined aural and visual alarm is immediately controlled accordingly to be alarmed.
So far, although those skilled in the art will appreciate that the more of the utility model have been shown and described in detail herein
A exemplary embodiment still, still can be according to the utility model public affairs in the case where not departing from the spirit and scope of the utility model
The content opened directly determines or derives many other variations or modifications for meeting the utility model principle.Therefore, this is practical new
The range of type is understood that and regards as to cover all such other variations or modifications.
Claims (7)
1. a kind of wind-powered electricity generation sub-synchronous oscillation monitors regulating system, characterized by comprising: wind turbine, with rotor blade
With the generator for being pivotably coupled to the rotor blade；Monitoring unit is wrapped for monitoring wind-powered electricity generation sub-synchronous oscillation parameter
It includes: wind-powered electricity generation monitoring modular, for monitoring wind-powered electricity generation field parameters, including wind-powered electricity generation voltage sensor, wind-powered electricity generation current sensor, wind-powered electricity generation frequency
Sensor, air velocity transducer, the torque sensor of torque for monitoring the generator and for monitoring the generator
Revolving speed speed probe；With power network monitoring module, for monitoring electrical network parameter, including grid voltage sensor, power grid electricity
Flow sensor and mains frequency sensor；Processing unit is communicated to connect with the monitoring unit；Remote monitoring unit, with institute
State processing unit communication connection；Power converter, in response to the monitoring unit, the processing unit and the long-range monitoring list
The monitoring data of member, adjust the frequency being connected to the grid and voltage.
2. monitoring regulating system according to claim 1, it is characterised in that the power converter includes full conversion power
One in converter and part conversion power converter.
3. monitoring regulating system according to claim 2, it is characterised in that the generator include double fed induction generators,
One in influence generator and synchronous generator.
4. monitoring regulating system according to claim 3, which is characterized in that the processing unit includes: pretreatment circuit,
It is connect with the monitoring unit；Processing server is connect with the pretreatment circuit communication；Storage server, with the processing
Server communication connection, and the processing server and the remote monitoring unit communicate to connect.
5. monitoring regulating system according to claim 4, which is characterized in that the processing unit includes: prewarning unit,
Including the input keyboard being connect with the processing server, the display being connect with the processing server and with the processing
The combined aural and visual alarm of server connection.
6. monitoring regulating system according to claim 5, it is characterised in that the pretreatment circuit includes sequentially connected
Amplifying circuit, filter circuit and analog to digital conversion circuit, the output end of the input terminal of the amplifying circuit and the monitoring unit
Connection, the output end of analog-digital conversion circuit as described are connect with the processing server.
7. monitoring regulating system according to claim 6, it is characterised in that the remote monitoring unit includes and the place
Manage the long-range processing server of unit communication connection and the long-range storage service with the long-range processing server communication connection
Device；The remote monitoring unit further includes distant early warning unit, and the distant early warning unit includes and the long-range processing service
The remote input keyboard of device connection, the remote display that is connect with the long-range processing server and with the long-range processing clothes
The long-range combined aural and visual alarm of business device connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820410697.3U CN208209537U (en) | 2018-03-26 | 2018-03-26 | A kind of wind-powered electricity generation sub-synchronous oscillation monitoring regulating system |
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| CN201820410697.3U CN208209537U (en) | 2018-03-26 | 2018-03-26 | A kind of wind-powered electricity generation sub-synchronous oscillation monitoring regulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309387A (en) * | 2018-12-17 | 2019-02-05 | 哈尔滨理工大学 | A kind of monitoring of flare up bundling transmission system sub-synchronous oscillation, Control and protection system |
-
2018
- 2018-03-26 CN CN201820410697.3U patent/CN208209537U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309387A (en) * | 2018-12-17 | 2019-02-05 | 哈尔滨理工大学 | A kind of monitoring of flare up bundling transmission system sub-synchronous oscillation, Control and protection system |
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Granted publication date: 20181207 Termination date: 20200326 |