CN209356601U - The grid-connected experiment porch of double-feedback type wind generator - Google Patents
The grid-connected experiment porch of double-feedback type wind generator Download PDFInfo
- Publication number
- CN209356601U CN209356601U CN201822186892.5U CN201822186892U CN209356601U CN 209356601 U CN209356601 U CN 209356601U CN 201822186892 U CN201822186892 U CN 201822186892U CN 209356601 U CN209356601 U CN 209356601U
- Authority
- CN
- China
- Prior art keywords
- transformer
- rotor
- double
- stator side
- input terminal
- 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.)
- Expired - Fee Related
Links
- 238000002474 experimental method Methods 0.000 title claims abstract description 27
- 238000004804 winding Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The utility model discloses a kind of grid-connected experiment porch of double-feedback type wind generator, including host computer, master control system, AC network connects the rotor windings of double-fed type alternating current generator after being used as the multi-tap transformer of low voltage crossing experiment, stator side contravariant transformer, stator side current transformer, rotor-side converter；The stator winding of double-fed type alternating current generator is connected to the input terminal of stator side contravariant transformer；AC asynchronous motor is connected to the input terminal of multi-tap transformer through frequency converter, and master control system is connect with host computer, multi-tap transformer, stator side current transformer and rotor-side converter respectively.The utility model is realized and is controlled the feed of double-fed type asynchronous machine by rotor-side converter, stator side current transformer and contravariant transformer；The mutual cooperation of rotor-side converter, stator side current transformer and contravariant transformer both may be implemented the four-quadrant control of electric energy, the sineization of stator side electric current also may be implemented so that whole system harmonic wave is seldom.
Description
Technical field
The utility model relates to wind-powered electricity generation field, in particular to a kind of grid-connected experiment porch of double-feedback type wind generator.
Background technique
In recent years, China's wind power generation industry rapidly develops, and installed capacity rapid growth year after year is produced along with Wind Power In China
While industry rapidly develops, problem is also to occur again and again.Few developments think matched complete height with technical standard at present
Voltage ride-through test and grid adaptability test device, main test equipment all rely on import, it is difficult to mention for wind-electricity integration examination
For effective technical support, the healthy and orderly development of Wind Power In China industry also seriously restrict.
Summary of the invention
In order to solve the above-mentioned technical problem, the utility model double-fed type wind-force simple, reliable for operation by a kind of structure
Electricity generation grid-connecting experiment porch.
The technical solution that the utility model solves the above problems is: a kind of grid-connected experiment porch of double-feedback type wind generator, packet
Include host computer, master control system, frequency converter, AC asynchronous motor, double-fed type alternating current generator, multi-tap transformer, stator side
Contravariant transformer, stator side current transformer and rotor-side converter, AC network connect multi-tap change after master switch, total contactor
The input terminal of depressor, the input terminal of the output end connecting stator side contravariant transformer of multi-tap transformer, stator side inversion transformation
The output end of device is followed by through stator side braking resistor and reactor to the input terminal of stator side current transformer, stator side current transformer it is defeated
Outlet connect rotor-side converter input terminal, rotor-side converter output end connection double-fed type alternating current generator rotor around
Group；The stator winding of double-fed type alternating current generator is successively followed by through switch, relay to the input terminal of stator side contravariant transformer；
The input terminal of the frequency converter is followed by through frequency converter switch between total contactor and the input terminal of multi-tap transformer, frequency converter
Output end connect with AC asynchronous motor, AC asynchronous motor is connect with double-fed type alternating current generator, the master control system
System is connect with host computer, multi-tap transformer, stator side current transformer and rotor-side converter respectively.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator, the master control system include frequency converter controller, stator side control
Device processed, rotor side controller, Voltage Drop controller, frequency converter controller are connected with frequency converter, stator side controller and stator
Side current transformer is connected, and rotor side controller is connected with rotor-side converter, and Voltage Drop controller is connected with multi-tap transformer.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator, between the switch and relay, relay and multi-tap become
Between the input terminal of depressor, between the output end of stator side current transformer and the input terminal of rotor-side converter, stator side current transformer
Output end and rotor-side converter input terminal between be equipped with Hall voltage sensor for detecting voltage, all Halls
Voltage sensor is all connected with master control system.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator, stator winding and the switch of the double-fed type alternating current generator
Between, between the output end of rotor-side converter and the rotor windings of double-fed type alternating current generator, the output end of multi-tap transformer
The Hall current sensor for detecting electric current, all Hall currents are equipped between the input terminal of stator side contravariant transformer
Sensor is all connected with master control system.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator further includes Crowbar device, the output end of Crowbar device
It connects between the output end of rotor-side converter and the rotor windings of double-fed type alternating current generator.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator, further includes cabinet fan, cabinet fan is opened by cabinet fan
Pass is followed by frequency converter switching between the input terminal of multi-tap transformer.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator, the stator side current transformer and rotor-side converter are all made of seven
The building of unit IPM module.
The utility model has the beneficial effects that:
1, the utility model drags AC asynchronous motor M using ABB frequency converter, is realized by frequency converter to asynchronous electric
The revolving speed of machine controls, and achievees the purpose that dragged double-fed type alternating current generator DFIG with the random output voltage of rotation speed change.
2, the utility model is realized different to double-fed type by rotor-side converter, stator side current transformer and contravariant transformer
Walk the feed control of motor；The mutual cooperation of rotor-side converter, stator side current transformer and contravariant transformer, so that whole system
Harmonic wave is seldom, and the four-quadrant control of electric energy both may be implemented, the sineization of stator current also may be implemented；Control is very flexible,
Both it can control generator rotor current, also can control stator side electric current, can neatly select DC bus-bar voltage, control
The tracking of wind energy maximum and the control of active power reactive power.
3, the utility model realizes different degrees of low-voltage by Voltage Drop controller, multi-tap transformer.
4, the utility model is equipped with Hall current sensor and Hall voltage sensor, by Hall current sensor and suddenly
Your voltage sensor detects electric current and voltage value everywhere respectively.
5, in order to guarantee after low-voltage occurs, system can promote rapidly output voltage, and the utility model uses
Crowbar device is to promote DC bus-bar voltage.
Detailed description of the invention
Fig. 1 is the circuit structure diagram of the utility model.
Fig. 2 is the structural block diagram of the utility model master control system.
Fig. 3 is the utility model main circuit topological structure figure.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of grid-connected experiment porch of double-feedback type wind generator, including host computer, master control system, frequency converter,
AC asynchronous motor M, double-fed type alternating current generator DFIG, the multi-tap transformer G4, fixed for low voltage crossing experiment
Sub- side contravariant transformer G3, stator side current transformer G2 and rotor-side converter G1, AC network is through master switch Q1, total contactor
The input terminal of multi-tap transformer G4, the output end connecting stator side contravariant transformer G3 of multi-tap transformer G4 are connected after KM0
Input terminal, the output end of stator side contravariant transformer G3 is followed by through switch Q5, stator side braking resistor and reactor to stator
The input terminal of side current transformer G2, the input terminal of the output end connection rotor-side converter G1 of stator side current transformer G2, rotor-side become
Flow the rotor windings of the output end connection double-fed type alternating current generator DFIG of device G1；The stator of double-fed type alternating current generator DFIG around
Group is successively followed by through switch Q4, relay KM6 to the input terminal of stator side contravariant transformer G3；The input of the frequency converter A BB
End is followed by through frequency converter switch Q3 between total contactor KM0 and the input terminal of multi-tap transformer G4, the output of frequency converter A BB
End is connect with AC asynchronous motor M, and AC asynchronous motor M is connect with double-fed type alternating current generator DFIG, the master control system
System is connect with host computer, multi-tap transformer G4, stator side current transformer and rotor-side converter respectively.
The stator side current transformer G2 and rotor-side converter G1 is all made of the building of seven unit IPM modules.IPM module pressure resistance
It is worth choosing value 1200V, electric current 75A.The string of capacitance requirements 450V electrolytic capacitor two eight of DC link simultaneously, is wanted with improving pressure resistance and capacity
It asks.
As shown in Fig. 2, the master control system includes frequency converter controller, stator side controller, rotor side controller, voltage
Fall controller, frequency converter controller is connected with frequency converter, and stator side controller is connected with stator side current transformer G2, rotor-side control
Device processed is connected with rotor-side converter G1, and Voltage Drop controller is connected with multi-tap transformer G4.
Between the switch Q4 and relay KM6, between relay KM6 and the input terminal of multi-tap transformer G4, stator
Between the output end of side current transformer G2 and the input terminal of rotor-side converter G1, the output end and rotor-side of stator side current transformer G2
The Hall voltage sensor TV1-TV8 for detecting voltage is equipped between the input terminal of current transformer G1, all Hall voltages pass
Sensor is all connected with master control system.
Between the stator winding and switch Q4 of the double-fed type alternating current generator DFIG, the output end of rotor-side converter G1
Between the rotor windings of double-fed type alternating current generator DFIG, the output end and stator side contravariant transformer of multi-tap transformer G4
The Hall current sensor TA1-TA9 for detecting electric current is equipped between the input terminal of G3, all Hall current sensors are equal
Connect master control system.
Using Hall voltage sensor, Hall current sensor acquisition rotor-side, DC side and stator side voltage and current
Signal, transducer range carry out selection installation according to power system capacity.Using temperature sensor measurement rotor-side, stator side current transformer
The temperature of G2 facilitates the temperature of real-time monitoring current transformer.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator further includes the defeated of Crowbar device G5, Crowbar device G5
It is terminated between the output end of rotor-side converter G1 and the rotor windings of double-fed type alternating current generator DFIG out.
The above-mentioned grid-connected experiment porch of double-feedback type wind generator, further includes cabinet fan M1, and cabinet fan M1 passes through cabinet wind
Fan switch Q2 is followed by between frequency converter switch Q3 and the input terminal of multi-tap transformer G4.
The design parameter of AC asynchronous motor M is as follows:
The design parameter of double-fed type alternating current generator DFIG is as follows:
Double-fed wind generating grid connection test platform drives one using a 9kW variable-frequency speed-regualting triphase asynchronous motor M
Platform 7.5kW three-phase double-fed type alternating current generator DFIG operation, three-phase AC asynchronous motor M and double-fed type alternating current generator DFIG
It is mounted on the same pedestal, is connected using shaft coupling, the real-time revolving speed of motor, doubly-fed generation are measured using incremental encoder
Machine number of poles is 6 poles, and the control of three-phase AC asynchronous motor M uses ABB Frequency Converter Control revolving speed, to simulate the change of wind speed
Change, while realizing that the rotational speed regulation simulates blower fan of three-phase AC asynchronous motor M is contributed by frequency converter with can be convenient.
Double-fed wind power generator group current transformer is made of rotor-side converter G1 and stator side current transformer G2 two parts.Double-fed
Formula alternating current generator DFIG stator winding accesses common frequency power network, and rotor windings are connected with rotor-side converter G1 output, stator side
Current transformer G2 connection power grid, the two are connected by intermediate DC link, are constituted a back-to-back/friendship and are directly handed over four quadrant running unsteady flow
Device.Rotor side controller acquires rotor voltage electric current and tach signal, is instructed according to the active power that master control system is assigned, control
Rotor-side converter G1 processed makes double-fed type alternating current generator DFIG export corresponding power.By the control fed to rotor, i.e.,
The electric power output of stator side constant voltage constant frequency is realized in control to rotor-side converter G1.Stator side current transformer G2 acquires DC side
Voltage and network voltage electric current control stator side current transformer G2 energy according to system working condition in DC link and power grid
Between flowing, with maintain DC side stablize.
The grid-connected experiment porch main circuit topology schematic diagram of double-feedback type wind generator is as shown in figure 3, by blade, speed increasing gear
A few part compositions such as case, double-fed generator, motor side controller (AC excitation control device), rotor-side converter.Wind-power electricity generation
Controller is by detection wind speed and double feedback electric engine revolving speed etc., and by MPPT maximum power point tracking or directly given power forms exchange and encourages
The given value of magnetic controller.Its given value is active power (or active current or revolving speed) and reactive power (or idle electricity
Flow component).AC excitation control device controls amplitude, frequency, phase and the phase sequence of rotor-side frequency converter output voltage, adjusts motor
Torque (or active power) and stator side reactive power.It can be worked in subsynchronous speed, together using the generator of which
The generator operation operating condition of leg speed, supersynchronous speed.
PWM current transformer can according to need work in rectification state or inverter mode, and energy can be with two-way flow, this is right
Be in dual feedback wind power generation system it is required, the size and power factor of rotor-side electric current and stator side current transformer G2 electric current are all
Adjustable, entire double PWM current transformers can work in four-quadrant state.
In carrying out practically, Each performs its own functions for two PWM converters.Rotor-side converter G1 uses vector control strategy, leads to
The rotor-side crossed in double-fed type alternating current generator DFIG applies three-phase alternating current progress excitation, adjusts amplitude, the frequency of exciting current
Rate realizes the smooth grid-connected and active and reactive output control of electricity generation system, realizes maximal wind-energy capture.Stator side PWM converter
DC-side Voltage Stabilization is kept, realizes active power by adjusting d, q shaft current of net side using network voltage vector oriented
With the decoupling control of reactive power, control flows to the reactive power of power grid, is normally operated in unity power factor state, can also root
Need to provide certain reactive power according to power grid.
Multi-tap transformer for low voltage crossing experiment is to use multi-tap export structure in secondary side, generally
Tap is set according to 5%-20% voltage change range, A.C. contactor control is respectively adopted between each road tap and main circuit, with
Different low-voltages is selected to carry out simulating grid voltage operating status.
Stator side PWM converter adds rotor-side PWM converter to constitute double PWM current transformers, has the advantages that
(1) whole system harmonic wave is seldom, and the four-quadrant control of electric energy both may be implemented, stator side electric current also may be implemented
Sineization；
(2) control is very flexible, both can control generator rotor current, also can control stator side electric current, Ke Yiling
DC bus-bar voltage, the tracking of control wind energy maximum and the control of active power reactive power are selected livingly.
Claims (7)
1. a kind of grid-connected experiment porch of double-feedback type wind generator, including host computer, master control system, frequency converter, alternating current asynchronous are electronic
Machine, double-fed type alternating current generator, the multi-tap transformer for low voltage crossing experiment, stator side contravariant transformer, stator side
Current transformer and rotor-side converter, AC network connect the input terminal of multi-tap transformer after master switch, total contactor, take out more
The input terminal of the output end connecting stator side contravariant transformer of head transformer, the output end of stator side contravariant transformer is through stator side
Braking resistor and reactor are followed by the input terminal of stator side current transformer, and the output end of stator side current transformer connects rotor-side unsteady flow
The input terminal of device, the rotor windings of the output end connection double-fed type alternating current generator of rotor-side converter；Double-fed type alternative electric generation
The stator winding of machine is successively followed by through switch, relay to the input terminal of stator side contravariant transformer；The input of the frequency converter
End through frequency converter switch be followed by total contactor and input terminal between, the output end of frequency converter and AC asynchronous motor connect
Connect, AC asynchronous motor is connect with double-fed type alternating current generator, the master control system respectively with host computer, multi-tap transformation
Device, stator side current transformer are connected with rotor-side converter.
2. the grid-connected experiment porch of double-feedback type wind generator according to claim 1, it is characterised in that: the master control system packet
Include frequency converter controller, stator side controller, rotor side controller, Voltage Drop controller, frequency converter controller and frequency converter
It is connected, stator side controller is connected with stator side current transformer, and rotor side controller is connected with rotor-side converter, Voltage Drop control
Device processed is connected with multi-tap transformer.
3. the grid-connected experiment porch of double-feedback type wind generator according to claim 1, it is characterised in that: the switch and relay
Between device, between relay and the input terminal of multi-tap transformer, the output end of stator side current transformer and rotor-side converter
It is equipped between input terminal, between the output end of stator side current transformer and the input terminal of rotor-side converter for detecting voltage suddenly
That voltage sensor, all Hall voltage sensors are all connected with master control system.
4. the grid-connected experiment porch of double-feedback type wind generator according to claim 1, it is characterised in that: the double-fed type exchange
Between the stator winding and switch of generator, the rotor windings of the output end of rotor-side converter and double-fed type alternating current generator it
Between, Hall electricity for detecting electric current is equipped between the output end of multi-tap transformer and the input terminal of stator side contravariant transformer
Flow sensor, all Hall current sensors are all connected with master control system.
5. the grid-connected experiment porch of double-feedback type wind generator according to claim 1, it is characterised in that: further include Crowbar
The output of device, Crowbar device terminates at the output end of rotor-side converter and the rotor windings of double-fed type alternating current generator
Between.
6. the grid-connected experiment porch of double-feedback type wind generator according to claim 1, it is characterised in that: further include cabinet wind
Fan, cabinet fan are followed by frequency converter switching between the input terminal of multi-tap transformer by cabinet fan switch.
7. the grid-connected experiment porch of double-feedback type wind generator according to claim 1, it is characterised in that: the stator side unsteady flow
Device and rotor-side converter are all made of the building of seven unit IPM modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822186892.5U CN209356601U (en) | 2018-12-25 | 2018-12-25 | The grid-connected experiment porch of double-feedback type wind generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822186892.5U CN209356601U (en) | 2018-12-25 | 2018-12-25 | The grid-connected experiment porch of double-feedback type wind generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209356601U true CN209356601U (en) | 2019-09-06 |
Family
ID=67800604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822186892.5U Expired - Fee Related CN209356601U (en) | 2018-12-25 | 2018-12-25 | The grid-connected experiment porch of double-feedback type wind generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209356601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093007A (en) * | 2021-04-29 | 2021-07-09 | 哈动国家水力发电设备工程技术研究中心有限公司 | Subsynchronous load test method for electric working condition of variable-speed motor |
-
2018
- 2018-12-25 CN CN201822186892.5U patent/CN209356601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093007A (en) * | 2021-04-29 | 2021-07-09 | 哈动国家水力发电设备工程技术研究中心有限公司 | Subsynchronous load test method for electric working condition of variable-speed motor |
| CN113093007B (en) * | 2021-04-29 | 2023-02-07 | 哈动国家水力发电设备工程技术研究中心有限公司 | Subsynchronous load test method for electric working condition of variable-speed motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Stiebler | Wind energy systems for electric power generation | |
| Hu et al. | Improved control of DFIG systems during network unbalance using PI–R current regulators | |
| CN102024079B (en) | Equivalent aggregation simulation method for electromagnetic transient simulation of large-scale wind farm | |
| CN104283212B (en) | A kind of double-fed wind power generator group Physical Simulation Platform based on CompactRIO | |
| CN102868346A (en) | Brushless doubly-fed motor excitation control system and control method using same | |
| CN103715696B (en) | A kind of wind power plant reactive voltage cluster control method based on multiple Wind turbines mutual aid | |
| CN102252846A (en) | Multifunctional wind power generation simulation experiment platform | |
| CN110504711A (en) | A kind of new-energy grid-connected control system and method based on new energy synchronous machine | |
| CN103762919B (en) | Output control device and method for direct-drive aerogenerator low voltage crossing | |
| Deng et al. | An offshore wind farm with DC grid connection and its performance under power system transients | |
| CN103414209B (en) | DFIG direct current grid-connected power generation system based on RMC and torque control method of DFIG direct current grid-connected power generation system | |
| CN106199428B (en) | High-voltage high-power double-fed wind driven generator test system and measurement and control system thereof | |
| Deng et al. | A new structure based on cascaded multilevel converter for variable speed wind turbine | |
| CN103078341A (en) | DFIG (Doubly Fed Induction Generator) based direct current grid-connection generating system and control method thereof | |
| CN105098833A (en) | Asynchronous constant speed wind turbine system for micro grid and working method thereof | |
| Badr et al. | Comparison between aggregation techniques for PMSG wind farm | |
| Shi et al. | Application of SMES in wind farm to improve voltage stability | |
| Trilla et al. | Control of SCIG wind farm using a single VSC | |
| CN209356601U (en) | The grid-connected experiment porch of double-feedback type wind generator | |
| CN104682444A (en) | Control method of permanent magnetic direct drive type wind power system converter of power grid | |
| CN104678302A (en) | Low voltage ride-through test system and method for wind turbine generator of Boost current transformer | |
| CN204118736U (en) | A kind of double-fed wind power generator group Physical Simulation Platform based on CompactRIO | |
| Touaiti et al. | Control scheme for stand-alone DFIG feeding an isolated load | |
| CN103401231B (en) | A kind of DFIG direct current grid-connected system based on RMC and flux linkage orientation control method thereof | |
| Gursoy et al. | Representation of variable speed wind turbine generators for short circuit analysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190906 |