CN106786664B - Wind turbine generator side active subsynchronous oscillation suppression device and method thereof - Google Patents
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- H—ELECTRICITY
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Abstract
The invention relates to a wind turbine generator side active subsynchronous oscillation suppression device and a method thereof, wherein the device comprises a small-capacity three-phase fully-controlled inverter and a controller thereof, the three-phase fully-controlled inverter is connected to the low-voltage side of a box transformer substation of a wind turbine generator in parallel, the grid voltage of the low-voltage side of the box transformer substation of the wind turbine generator and the grid-connected current of the low-voltage side are required to be acquired to extract subsynchronous oscillation information, and the output current and the direct current voltage of an additional inverter are acquired as control feedback to compensate the subsynchronous current of the wind turbine generator so as to optimize the current and the voltage of a parallel point, thereby enhancing the electrical damping of the whole system on a subsynchronous frequency band and realizing the subsynchronous oscillation suppression of.
Description
Technical Field
The invention relates to a wind turbine generator side active subsynchronous oscillation suppression device and a method thereof, and belongs to the field of new energy power generation.
Background
In recent years, power grids are rapidly developed, subsynchronous oscillation phenomena formed by interaction of wind power and direct current transmission or series compensation lines and other power grid structures appear in a plurality of domestic regional power grids, and influences such as subsynchronous protection actions of synchronous units in the regions, wind power off-grid and the like can be caused in serious cases. Different from the traditional subsynchronous oscillation problem mainly caused by synchronous generator sets, the novel subsynchronous oscillation phenomenon caused by the participation of wind power also has the characteristic that the oscillation frequency and the oscillation amplitude change along with the change of a network mode.
At present, the suppression measures provided for the subsynchronous oscillation research involving wind power are mostly performed from the perspective of a power grid according to a centralized processing idea, for example, the series compensation input condition of the power grid is changed to avoid a resonance point, a parallel static synchronous compensator (STATCOM for short) is improved/newly added at a parallel point of a wind power plant, and the like.
The subsynchronous oscillation detection and suppression from the wind turbine side is a solution that is worth trying. Scholars and experts propose a processing method for control improvement based on a converter of a wind turbine generator, however, the thought does not consider that current wind power equipment manufacturers are all over, wind power host manufacturers and converter manufacturers have various combination and matching modes, and the technical difficulty and the execution difficulty of transformation are not small.
Disclosure of Invention
The invention aims to provide a wind turbine side active subsynchronous oscillation suppression device, which realizes the functions of detecting and suppressing subsynchronous oscillation of a fan, is easy to reconstruct and realize engineering and has low manufacturing cost. According to the invention, the three-phase full-control inverter is added to generate the component of the subsynchronous current of the wind turbine generator, the current and voltage of a parallel point are optimized, the electrical damping on a subsynchronous frequency band is enhanced, and the subsynchronous oscillation suppression of the system is realized.
In order to achieve the purpose, the active subsynchronous oscillation suppression device on the wind turbine generator side and the method thereof are characterized by comprising a three-phase fully-controlled inverter connected with the output end of the wind turbine generator, wherein the output end of the wind turbine generator is connected with the input end on the low-voltage side of a box transformer of the wind turbine generator, and the three-phase fully-controlled inverter is connected with the input end on the low-voltage side of the box transformer of the wind turbine generator in parallel;
the wind power generation system further comprises a controller, wherein the controller is used for collecting the power grid voltage of the low-voltage side of the box transformer of the wind power generation unit and the grid-connected current of the low-voltage side of the wind power generation unit, monitoring the running state of the wind power generation unit, extracting the subsynchronous oscillation information of the wind power generation unit, and simultaneously collecting the output current and the direct current voltage of the three-phase fully-controlled inverter as control feedback, so that the electrical damping on a subsynchronous frequency band is controlled and enhanced, and the subsynchronous oscillation suppression of.
Further, the wind turbine generator set comprises a wind driven generator and a converter connected with the wind driven generator.
Furthermore, the three-phase full-control inverter adopts an Insulated Gate Bipolar Transistor (IGBT) device, the switching frequency is thousands of hertz, a pure inductance filter is adopted for output, and the inductance value is about 1-3 times of the output filter inductance of the wind driven generator and the converter. The control mode of the controller adopts vector control and subsynchronous oscillation suppression control.
A method for suppressing the side active subsynchronous oscillation of a wind turbine generator is characterized by comprising the following steps:
(1) collecting low-voltage side grid voltage e of wind turbine generator box transformer substationabcOutput current i of three-phase inverter1abcAnd the direct current voltage Udc is subjected to phase-locked loop and coordinate transformation to obtain a grid voltage reference angle theta according to a conventional vector control methodeObtaining fundamental wave control voltage component e through a direct current voltage controller, a d-axis current controller and a q-axis current controllercd1、ecq1。
(2) Collecting low-voltage side network access current iwabcCoordinate transformation to obtain a synchronous coordinate representation iwd、iwqSeparating the direct current component and the high frequency component by a band-pass filter to obtain a subsynchronous oscillation current issrd、issrq。
(3) Will sub-synchronous oscillating current issrd、issrqObtaining a sub-synchronous control component e through phase shift transformation and proportion adjustmentcssrd、ecssrq。
(4) Controlling the component vector e with the fundamental wavecd1、ecq1And a subsynchronous control component ecssrd、ecssrqAnd finally obtaining an inverter switch control signal through SVPWM (Space Vector Pulse Width Modulation) Modulation, and acting on the inverter to form closed-loop control to obtain a subsynchronous oscillation damping effect.
Further, the band-pass filter in the step (2) is based on dq synchronous rotation coordinate system and can be composed of low-pass filtering and high-pass filtering. Considering that the subsynchronous oscillation generally refers to oscillation of 2-50 Hz in power, corresponding to 50 +/-2-50 Hz current triphase quantity, the current triphase quantity is expressed as 2-50 Hz in a dq synchronous coordinate system, so that the cut-off frequency of the low-pass filter is 1-6 Hz for filtering direct current, and the cut-off frequency of the high-pass filter is 180-250 Hz for filtering high-frequency harmonic.
The invention has the beneficial effects that:
the method has the advantages that electric signals at the wind turbine end are collected, and a small-capacity inverter is added, so that subsynchronous oscillation monitoring and suppression on the wind turbine level can be realized;
the method is not limited by the structure and control of the specific wind turbine generator, and engineering reconstruction is facilitated;
the subsynchronous oscillation frequency is not required to be set, and the subsynchronous oscillation frequency can adapt to the subsynchronous oscillation change caused by the change of the machine network mode.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic connection diagram of the present invention applied to a grid-connected system of wind turbines;
FIG. 2a is a diagram illustrating a subsynchronous current equivalent applied to a grid-connected system of a wind turbine generator set according to the present invention;
FIG. 2b is a schematic diagram of the equivalent fundamental current applied to the grid-connected system of the wind turbine generator set according to the present invention;
FIG. 3 is a further description of the control method of the wind turbine side active subsynchronous oscillation suppression device according to the present invention;
FIG. 4 is a diagram illustrating a specific implementation of subsynchronous oscillation suppression in an embodiment;
FIG. 5a is a waveform diagram of a three-phase line voltage distortion on a high-voltage bus of a wind turbine generator set box in the embodiment;
fig. 5b is a waveform diagram of three-phase current variation on a high-voltage bus of the wind turbine box transformer substation of the embodiment;
fig. 5c is a waveform diagram of active and reactive oscillations output on the high-voltage bus of the wind turbine set box in the embodiment;
FIG. 5d shows the subsynchronous oscillation frequency detected by the apparatus in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): application in doubly-fed wind turbine generator subsynchronous oscillation scene
The invention discloses a wind turbine generator side active subsynchronous oscillation suppression device, and fig. 1 is a connection schematic diagram of the device in a fan grid-connected system, wherein a small-capacity three-phase fully-controlled inverter is connected in parallel with a wind turbine generator box and becomes lowThe voltage side is in parallel operation relation with the wind turbine generator, and the voltage e of the low-voltage side grid of the box transformer of the wind turbine generator needs to be acquiredabcGrid-connected current i at low-voltage side of wind turbine generatorwabcTo extract the subsynchronous oscillation information of the wind turbine generator and collect the output current i of the three-phase inverter1abcDC voltage UdcAs a feedback signal.
FIG. 2 is a simplified principle illustration of the device, the parallel point current and voltage are optimized by generating the component of the compensation wind turbine subsynchronous current in the additional active device, and the damping effect on the subsynchronous oscillation of the system is achieved, and FIG. 2a illustrates that the device hardly generates fundamental current and can minimize the influence of the additional device on the normal operation of the wind turbine.
FIG. 3 is a further description of the control method for wind turbine side subsynchronous oscillation suppression according to the present invention. Detecting the obtained low-voltage side network voltage eabcFirstly, obtaining a grid voltage reference angle theta through phase-locked loop and coordinate transformationeObtaining fundamental wave control voltage component e through a direct current voltage controller, a d-axis current controller and a q-axis current controllercd1、ecq1(ii) a The generation method of the fundamental wave control voltage component is consistent with the vector control principle of the converter, and details are not repeated.
Collecting wind turbine generator low-voltage side network access current iwabcObtaining a synchronous coordinate representation value i through coordinate transformationwd、iwqSeparating the direct current component and the high frequency component by a band-pass filter to obtain a subsynchronous oscillation current issrd、issrq. For explaining the action principle of the device, the situation that the doubly-fed grid-connected device contains subsynchronous oscillation in three-phase current i is not assumed herewabcThe d-axis current and the q-axis current i are converted to a dq synchronous rotation coordinate systemwd、iwqContaining a DC component and a sub-synchronous component of 45Hz, sowd、iwqAfter a direct current component and high frequency harmonics possibly contained in the direct current component are filtered by a band-pass filter (consisting of 5Hz low-pass filtering and 300Hz high-pass filtering), a 45Hz subsynchronous component, namely a subsynchronous current i under a synchronous rotating coordinate system, is obtainedssrd、issrq。
Subsynchronous oscillation current issrd、issrqObtaining a subsynchronous control component e through phase shift transformation (the phase shift is realized through angle compensation under a subsynchronous coordinate system) and proportion adjustment of a proportion adjustercssrd、ecssrq. A specific implementation of this step is provided in this embodiment, as shown in FIG. 4, where the sub-synchronous current i in the synchronous rotating coordinate system is appliedssrd、issrqConverting the coordinate rotation into subsynchronous frequency current i under subsynchronous frequency coordinatesssrdx、issrqxWherein the coordinate rotation angle is obtained by a subsynchronous phase-locked loop and is obtained through an integration link of a PI controllersrqxWhen the control is 0, the output of the PI controller is the subsynchronous oscillation electrical angular velocity omegassrIntegral output, i.e. angle theta characterizing subsynchronous oscillation informationissr(ii) a Subsynchronous frequency current i under subsynchronous frequency coordinatesssrdx、issrqxInversely transforming to obtain subsynchronous rotating current i under the synchronous rotating coordinate systemssrd1、issrq1Angle used for inverse transformation is thetaissrCompensating angle thetacomValue of after, thetacomThe values are used to compensate for control system delay and filter lag; subsynchronous rotating current issrd1、issrq1Obtaining a sub-synchronous control voltage component e by proportional adjustment of a proportional regulatorcssrd、ecssrq。
Control the subsynchronous component ecssrd、ecssrqAnd the fundamental control component vector ecd1、ecq1And synthesizing to obtain a synthesized control vector, and finally obtaining a switch control signal of the three-phase full-control inverter to act on the three-phase full-control inverter through SVPWM modulation.
The simulation results of this embodiment are shown in fig. 5 a-5 d, which are waveforms of the subsynchronous oscillation suppression effect simulation oscillogram in the embodiment, which are the three-phase line voltage, the three-phase current and the output power of the high-voltage bus of the wind turbine generator set box, and the subsynchronous oscillation electrical angular velocity detected by the device. The simulation sets the subsynchronous suppression function to be on immediately before 2.1s and to be off after 2.1s (the subsynchronous suppression function is set to 0 in fig. 3). Compared with simulation waveforms before and after 2.1s, although the doubly-fed unit grid-connected system has subsynchronous oscillation possibility before 2.1s, the voltage and current waveforms on the high-voltage bus are good, the system oscillation is restrained, and the waveforms are good; and after 2.1s, the subsynchronous suppression function of the device is quitted, the subsynchronous oscillation of the system is gradually deteriorated, after 2.1s, the voltage of the three-phase line in fig. 5a is distorted, the three-phase current in fig. 5b is obviously larger, the active and reactive oscillation of the output is obvious in fig. 5c, and fig. 5d is the subsynchronous oscillation frequency detected by the device in the embodiment. Simulation results show that the device of the invention is effectively applied in the embodiment.
The invention collects the electrical signal at the wind turbine generator terminal and adds a small-capacity inverter, so that the subsynchronous oscillation monitoring and inhibition on the wind turbine generator level can be realized; the method is not limited by the structure and control of the specific wind turbine generator, and engineering reconstruction is facilitated; the subsynchronous oscillation frequency is not required to be set, and the subsynchronous oscillation frequency can adapt to the subsynchronous oscillation change caused by the change of the machine network mode.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A method for suppressing the side active subsynchronous oscillation of a wind turbine generator is characterized by comprising the following steps:
(1) collecting low-voltage side grid voltage e of wind turbine generator box transformer substationabcOutput current i of three-phase inverter1abc、DC voltage UdcAccording to the existing vector control method, the grid voltage reference angle theta is obtained through phase-locked loop and coordinate transformationeObtaining d-axis component e of fundamental control voltage through a direct current voltage controller, a d-axis current controller and a q-axis current controllercd1Q-axis component ecq1；
(2) Collecting low-voltage side network access current i of wind turbine generator set transformer substationwabcCoordinate transformation to obtain d-axis representation value i of synchronous coordinatewdQ-axis represents the value iwqSeparating the direct current component and the high frequency component by a band-pass filter to obtain a subsynchronous d-axis oscillation current issrdQ-axis oscillation current issrq；
(3) Will sub-synchronous d-axis oscillating current issrdQ-axis oscillation current issrqObtaining a sub-synchronous control voltage d-axis component e through phase shift transformation and proportion adjustmentcssrdQ-axis component ecssrq；
The specific method of the step (3) is as follows: the subsynchronous d-axis oscillation current i under the synchronous rotating coordinate systemssrdQ-axis oscillation current issrqConverting the coordinate rotation into subsynchronous d-axis frequency current i under subsynchronous frequency coordinatesssrdxQ-axis frequency current issrqxWherein the coordinate rotation angle is obtained by a sub-synchronous phase-locked loop, let issrqxAs the input of the PI controller and controlling the input to be 0, the output of the PI controller is the subsynchronous oscillation electrical angular velocity omegassrIntegral output, i.e. angle theta characterizing subsynchronous oscillation informationissr(ii) a Subsynchronous d-axis frequency current i under subsynchronous frequency coordinatessrdxQ-axis frequency current issrqxInversely transforming to obtain subsynchronous d-axis rotating current i under the synchronous rotating coordinate systemssrd1Q-axis rotating current issrq1Angle used for inverse transformation is thetaissrPhase shift compensation angle thetacomValue of after, thetacomThe values are used to compensate for control system delay and filter lag; subsynchronous d-axis rotating current issrd1Q-axis rotating current issrq1Obtaining a sub-synchronous control voltage d-axis component e through the proportion regulation of a proportion regulatorcssrdQ-axis component ecssrq；
(4) The fundamental wave control voltage d-axis component ecd1Q-axis component ecq1And a sub-synchronous control voltage d-axis component ecssrdQ-axis component ecssrqSynthesizing to obtain a synthesized control vector, performing space vector pulse width modulation on the synthesized control vector to obtain an inverter switch control signal, and acting on the inverter to form closed-loop controlAnd obtaining the subsynchronous oscillation damping effect.
2. The method for suppressing the wind turbine generator side active subsynchronous oscillation according to claim 1, wherein in the step (2), the band-pass filter is based on a d-axis and q-axis synchronous rotating coordinate system, and the band-pass filter comprises a low-pass filter and a high-pass filter.
3. The device for suppressing the active subsynchronous oscillation on the wind turbine generator side is characterized by comprising a three-phase fully-controlled inverter connected with the output end of the wind turbine generator, wherein the output end of the wind turbine generator is connected with the input end of the low-voltage side of a box transformer of the wind turbine generator, and the three-phase fully-controlled inverter is connected with the input end of the low-voltage side of the box transformer of the wind turbine generator in parallel;
the system also comprises a controller, a three-phase full-control inverter and a controller, wherein the controller is used for acquiring the grid voltage of the low-voltage side of the box transformer of the wind turbine generator and the grid-connected current of the low-voltage side of the wind turbine generator, monitoring the running state of the wind turbine generator, extracting the subsynchronous oscillation information of the wind turbine generator and simultaneously acquiring the output current and the direct current voltage of the three-phase full-control inverter as control feedback;
the controller is controlled by adopting a vector control method and the subsynchronous oscillation suppression method of claim 1 or 2.
4. The wind turbine side active subsynchronous oscillation suppression device according to claim 3, wherein the wind turbine comprises a wind turbine and a converter connected with the wind turbine.
5. The wind turbine generator side active subsynchronous oscillation suppression device according to claim 3, wherein the three-phase fully-controlled inverter adopts an insulated gate bipolar transistor, the output of the insulated gate bipolar transistor adopts a pure inductance filter, and the inductance value of the inductance filter is 1-3 times of the output filter inductance of the wind turbine generator.
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| CN109995052B (en) * | 2017-12-29 | 2021-06-11 | 北京金风科创风电设备有限公司 | Subsynchronous suppression method and device and controller of converter |
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| CN108199394B (en) * | 2018-02-23 | 2019-09-24 | 华北电力科学研究院有限责任公司 | The sub-synchronous oscillation suppression method and device of Wind turbines |
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| CN109103903A (en) * | 2018-09-13 | 2018-12-28 | 华北电力大学 | A kind of judgment method causing sub-synchronous oscillation for straight drive blower |
| CN111969620B (en) * | 2020-07-03 | 2023-08-22 | 科诺伟业风能设备（北京）有限公司 | Method for restraining direct-driven wind turbine generator system converter from participating in subsynchronous oscillation of power grid |
| CN112701691A (en) * | 2020-12-23 | 2021-04-23 | 武汉大学 | Wind power plant harmonic suppression method based on embedded active filtering algorithm |
| CN114123234A (en) * | 2021-09-30 | 2022-03-01 | 国网电力科学研究院有限公司 | Subsynchronous oscillation suppression method and system based on active oscillation current blocking and storage medium |
| CN114094601B (en) * | 2021-11-19 | 2023-08-11 | 国网湖南省电力有限公司 | Alternating-current voltage fluctuation control method for isolated network operation of direct-current power distribution network |
| CN116454921B (en) * | 2023-06-14 | 2024-01-02 | 国电南瑞科技股份有限公司 | Super-capacitor-based power grid subsynchronous oscillation suppression method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552468A (en) * | 2009-01-13 | 2009-10-07 | 南方电网技术研究中心 | Damping controller for restricting secondary synchronous oscillations and control method thereof |
| CN103326382A (en) * | 2013-04-19 | 2013-09-25 | 上海交通大学 | Subsynchronous oscillation anti-oscillation suppression system and method based on STATCOM |
| CN104934992A (en) * | 2015-06-23 | 2015-09-23 | 国家电网公司 | Subsynchronous oscillation suppression device and method based on phase-locked loop error |
-
2016
- 2016-12-12 CN CN201611138934.7A patent/CN106786664B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552468A (en) * | 2009-01-13 | 2009-10-07 | 南方电网技术研究中心 | Damping controller for restricting secondary synchronous oscillations and control method thereof |
| CN103326382A (en) * | 2013-04-19 | 2013-09-25 | 上海交通大学 | Subsynchronous oscillation anti-oscillation suppression system and method based on STATCOM |
| CN104934992A (en) * | 2015-06-23 | 2015-09-23 | 国家电网公司 | Subsynchronous oscillation suppression device and method based on phase-locked loop error |
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