CN102769295A - Static reactive compensation system and method of wind power converter - Google Patents
Static reactive compensation system and method of wind power converter Download PDFInfo
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- CN102769295A CN102769295A CN2012102728654A CN201210272865A CN102769295A CN 102769295 A CN102769295 A CN 102769295A CN 2012102728654 A CN2012102728654 A CN 2012102728654A CN 201210272865 A CN201210272865 A CN 201210272865A CN 102769295 A CN102769295 A CN 102769295A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a static reactive compensation system and method of a wind power converter. The converter comprises a net side power module, a machine side power module, a central control unit and a direct current bus, and is characterized in that the compensation system comprises a direct current bus, a net side power module, a net side filter, a central control unit, a transformer, a voltage detector and a current detector; and the voltage detector and the current detector are both connected with the central control unit. The compensation method comprises the steps of: a, judging whether a compensation signal exists; b, activating the compensation state; e, detecting a voltage signal and a current signal; f, compensating according to the actual condition of the power grid; g, judging whether a compensation stop signal exists; and h, recovering to the normal state. The static reactive compensation system and method have the advantages that: (1) the cost is saved by using the converter to realize the compensation; (2) a wide compensation range is achieved; (3) the power apparatus response speed is high (less than or equal to 5 ms) and the loss is low (efficiency is more than or equal to 98%); and (4) the system has good harmonic suppression ability by means of PWM (pulse width modulation) technology. Besides, the utilization rate of the wind machine is increased and the unstable condition of the power grid of the wind power station can be effectively improved.
Description
Technical field
The present invention relates to a kind of wind electric converter static reactive power compensation system and method, in particular, relate in particular to a kind of wind electric converter static reactive power compensation system and method that utilizes the existing device of current transformer under wind-driven generator off-grid state, to compensate work.
Background technology
Electric power system for a constant volume; If only rely on this unique meritorious power supply of generator that active power is provided; Also basically with its as reactive power source reactive power is provided, between the electric power system since reactive power constantly back and forth exchange can cause voltage loss and power loss on generating, transmission of electricity and the power supplying and distributing equipment.Simultaneously since power system capacity be active power and reactive power vector and, when reactive power increased, active power also can reduce, and causes economic loss.Therefore no matter which kind of electric power system all needs reactive power compensation.
Wind power generation is explosive growth in recent years at home, and wind-powered electricity generation proportion in electric power system increases just day by day.But owing to defectives such as the intrinsic randomness of wind energy, fluctuations, the wind-powered electricity generation less stable, bigger to the impact of electrical network, especially under the electric network fault situation, the wind-driven generator short time can absorb idle in a large number, maybe situation further be worsened.
To above-mentioned situation, in wind energy turbine set, usually reactive power compensator can be set.But along with the expansion of wind energy turbine set capacity, the reactive power compensation how wind energy turbine set tackles electric network fault and quick responsive electricity grid need become problem demanding prompt solution.
In the patent No. of on January 20th, 2009 application is that the patent No. of application on November 4th, 200920004211,2010 is that the patent No. of application on August 23rd, 201020591051,2011 is in three utility model patents of 201120309542; What adopt is to concentrate reactive power compensation in the exit of wind energy turbine set; But this reactive power compensation mode can only reduce above circuit of attachment point and the loss of transformer because of carrying reactive power to cause; Can not reduce user inside and carry the loss that reactive power caused to power consumption equipment, energy-saving efficiency is restricted.
In the patent No. of on November 21st, 2008 application is that the patent No. of application on December 29th, 200820115643,2010 is in two utility model patents of 201020699547; What adopt is to disperse the reactive power compensation mode on the spot; Help the idle internal zone dividing that carries out is controlled, realize the load or burden without work partition balancing, internal loss obviously reduces; But these modes have increased extra reactive power compensator, cause the unit cost to increase.
Summary of the invention
The present invention provides a kind of wind electric converter static reactive power compensation system and method that utilizes the existing device of current transformer under wind-driven generator off-grid state, to compensate work in order to overcome the shortcoming of above-mentioned technical problem.
Wind electric converter static reactive power compensation of the present invention system, current transformer is between the output and Circuit Fault on Secondary Transformer of wind-driven generator, and the primary side of transformer is the wind field electrical network; Current transformer comprises net side power model, pusher side power model and central control unit; Net side power model is connected with transformer through the net side filter, and the pusher side power model is connected with the output of wind-driven generator through the pusher side filter; Net side power model is connected through the dc bus that comprises capacitance group with the pusher side power model; Its special feature is: reactive compensation system comprises dc bus, net side power model, net side filter, central control unit, the transformer of capacitor group and voltage detector and the current detector that is arranged at Circuit Fault on Secondary Transformer, and the output of said voltage detector and current detector all is connected with central control unit; Central control unit is connected with drive circuit, and drive circuit control net side power model carries out reactive power compensation; Central control unit also is connected with the blower fan master control system of the normal operation of control whole wind power generator.
Current transformer passes through control and the conversion to the alternating current of wind-driven generator output, can effectively it be incorporated in the electric field electrical network; Net side power model, pusher side power model become by set of power switches, can realize rectification, inversion control, the normal power generation that realizes wind-driven generator be incorporated into the power networks.Net side filter, pusher side filter are realized filter action, and the dc bus that comprises capacitance group is realized the DC voltage-stabilizing effect.Utilize the intrinsic dc bus of current transformer, net side power model, the filtering of net side, central control unit, transformer, voltage detector and current detector to constitute reactive power compensation circuit; Under wind-driven generator off-grid state, by it electrical network is carried out reactive power compensation, practiced thrift cost, enlarged compensation range.
Wind electric converter static reactive power compensation of the present invention system, said net side power model is made up of three full-bridge circuits, each full-bridge by two successively the full control power devices of series connection form; After being connected, the both positive and negative polarity of three full-bridges is connected to the two ends of dc bus; The control end of said full control power device all is connected with the output of drive circuit.In the process of reactive power compensation, the control through to full control power device conducting state on each brachium pontis realizes the reactive power compensation of electrical network.
Wind electric converter static reactive power compensation of the present invention system, said central control unit is connected with the telecommunication unit that carries out telecommunication.Through the telecommunication unit, central control unit can be realized long-range wired or wireless communication, is convenient to remote monitoring, controls the work of current transformer.
Wind electric converter static reactive power compensation of the present invention system, said wind-driven generator is provided with the encoder that is connected with central control unit, and the outlet side of wind-driven generator is provided with the rotor short-circuit protector.Encoder is realized the detection to the wind-driven generator rotating speed, and the rotor short-circuit protector is realized the protection to Generator's Rotor Circuit.
Wind electric converter static reactive power compensation of the present invention system, the control end of said wind-driven generator is connected with the blower fan master control system, and central control unit is connected with the output of blower fan master control system.Central control unit is realized the control to current transformer, and the blower fan master control system realizes the control to the whole wind force generating system.
Wind electric converter static reactive-power compensation compensation method of the present invention, its special feature are that current transformer is realized reactive power compensation under the control action of central control unit, blower fan master control system; The job step of central control unit is following: a. judgement has or not compensating signal, central control unit to judge whether to receive the reactive power compensation signal of blower fan master control system, as not receiving the reactive power compensation signal, then controls current transformer and moves by normal operating conditions; As receive reactive power compensation signal, then execution in step b; B. activate the reactive power compensation state, central control unit judges that can the reactive power compensation state of current transformer activate, as can not, then activate again; If can activate, then execution in step c; C. turn-off the pusher side power model, central control unit turn-offs the pusher side power model of current transformer, in order to carrying out reactive power compensation; D. carry out reactive power compensation by set point, central control unit is according to the initial set value of the blower fan master control system that receives, and the net side power model of control current transformer carries out reactive power compensation; E. detect voltage, current signal, central control unit is through the voltage and current signal of voltage detector, current detector detection of grid; F. press the compensation of electrical network actual conditions, voltage, the current signal of central control unit through collecting through the control of drive circuit to net side power model, carries out reactive power compensation by actual conditions to electrical network; G. judge have that uncompensated stop signal, central control unit judge whether to receive the blower fan master control system stop the reactive power compensation signal, as receive stop signal, then execution in step h; As do not receive stop signal, then repeated execution of steps e, f; H. recover normal condition, central control unit 7 control current transformers recover normal operating conditions, finish reactive power compensation; The job step of blower fan master control system is following: 1). and judge whether to satisfy the off-grid condition, the blower fan master control system judges whether the wind-powered electricity generation unit satisfies the off-grid condition, as not satisfying, then waits to be detected; As satisfy the off-grid condition, then execution in step 2); 2). send the reactive power compensation signal, send the reactive power compensation status signal, carry out reactive power compensation with the control current transformer to central control unit; 3). send the reactive power compensation set point, to the initial set value of central control unit transmission reactive power compensation, so that central control unit carries out reactive power compensation with set point; 4). judge whether the off-grid condition disappears, the blower fan master control system judges whether the off-grid condition of wind-powered electricity generation unit disappears; As not disappearing, then continue to judge; Disappear like the off-grid condition, then execution in step 5); 5). transmission stops the reactive power compensation signal, and the blower fan master control system is sent the stop signal of reactive power compensation to central control unit, so that current transformer finishes reactive power compensation.
Wind electric converter static reactive-power compensation compensation method of the present invention, the condition that satisfies wind-powered electricity generation unit off-grid in the said step 1) is: electrical network breaks down or the wind speed instability causes the wind-powered electricity generation unit to satisfy the off-grid condition.
The invention has the beneficial effects as follows: (1) bucking-out system of the present invention, can realize through utilizing existing current transformer, need not to set up other modules basically, practiced thrift cost effectively; (2) owing to adopt the current transformer on the wind-driven generator to carry out reactive power compensation, make the reactive power compensation scope comparatively wide in range; (3) the net side power model unit as reactive power compensation can adopt the total power device, response speed fast (≤5ms), loss low (efficient>=98%); (4) central control unit can adopt the PWM pulse modulation technology to realize reactive power compensation, has good inhibition harmonic wave ability; (5) can set up the telecommunication unit, have remote monitoring, control ability.(6) reactive-load compensation method of the present invention; Through cooperating of blower fan master control system and central control unit; Realized the reactive power compensation of the current transformer under the wind-powered electricity generation unit off-grid state effectively, the reactive power compensation when quick response when having realized electric network fault and electric network fault.(7) utilance that has improved blower fan also can effectively be improved the unsettled situation of wind energy turbine set electrical network.
Description of drawings
Fig. 1 is the systematic schematic diagram of blower fan power generation system;
Fig. 2 is the schematic diagram of current transformer among the present invention as reactive compensation system;
Fig. 3 is the reactive power compensation workflow diagram of central control unit of the present invention;
Fig. 4 is the reactive power compensation workflow diagram of blower fan master control system among the present invention.
Among the figure: 1 wind-driven generator, 2 transformers, 3 net side power models, 4 pusher side power models; 5 net side filters, 6 pusher side filters, 7 central control units, 8 rotor short-circuit protectors; 9 voltage detectors, 10 current detectors, 11 drive circuits, 12 telecommunication unit.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1; Provided the systematic schematic diagram of blower fan power generation system, it comprises wind-driven generator 1, transformer 2, net side power model 3, pusher side power model 4, net side filter 5, pusher side filter 6, central control unit 7, rotor short-circuit protector 8, the dc bus of capacitor group, encoder.Shown wind-driven generator is the double-fed wind power generator system, and the output of stator winding directly is connected on the secondary side winding of transformer 2, realizes the transmission of electricity effect to electrical network; The output of rotor winding is connected on the secondary side winding of transformer 2 after through current transformer, and the primary side of transformer 2 is the wind field electrical network; Through the control of current transformer, control stator winding output and meet alternating current to the electrical network input to exciting current on the rotor winding.
Net side power model 3 in the current transformer and pusher side power model 4 are connected through dc bus, and dc bus is provided with capacitance group.Pusher side power model 4 is connected with the rotor winding of wind-driven generator 1 through pusher side filter 6, and net side power model 3 is connected with the secondary side winding of transformer 2 through netting side filter 5, and pusher side filter 6, net side filter 5 are realized filter actions.Through net side power model 3, the rectification of pusher side power model 4, reversion reaction, realize control, so that the satisfactory three-phase electricity of wind-driven generator 1 output to rotor.
Net side power model 3 shown in Fig. 2 is made up of three full-bridge circuits, and each full-bridge is made up of two full control power devices of connecting successively; Be connected to the two ends of dc bus after the both positive and negative polarity of three full-bridges is connected, each control end of controlling power device entirely all is connected with the output of drive circuit 11; Under the control of drive circuit 11 output signals, can control ending and conducting of corresponding full control device in an orderly manner like this, realize no-power compensation function.
In order to increase remote monitoring and control ability, the telecommunication unit 12 that is connected with central control unit 7 can be set also.Output at wind-driven generator 1 is provided with encoder, so that realize the measurement of rotating speed; Also can on the rotor winding of wind-driven generator 1, rotor short-circuit protector 8 be set, so that realize protective effect to the generator amature winding.Full control device in the net side power model 3 in the current transformer can be IGBT or IGCT power device, and current transformer can be a double-feed current transformer, can also be full power convertor.Wind-driven generator 1 is accomplished the generating and the operation of being incorporated into the power networks under the control of blower fan master control system.
In the process of work: the central control unit 7 of current transformer carries out preliminary treatment with detected voltage on line side, current signal; Calculate the reactive power compensation value that needs by the blower fan master control system; Current transformer generates the high-frequency PWM signal to drive circuit according to master control reactive power set point simultaneously; Net side power model 3 carries out switch motion according to drive signal, realizes required no-power compensation function.Adopt the PWM technology can also export the electric current reverse as required, suppress mains by harmonics with mains by harmonics.Because current transformer adopts the full-control type device, can realize quick response (≤5ms), loss low (efficient>=98%).
Anti-surge protective device and cooling device also can be set.Anti-surge protective device can effectively prevent the impact of electrical network, and electrical network is to the infringement of current transformer under the minimizing malfunction.Utilize the cooling device of current transformer itself can realize intelligent temperature control simultaneously, in the useful life of having improved power device, avoided the higher drawback of common reactive-load compensation equipment temperature rise.
That can realize reactive power compensation not only is confined to above-mentioned double-fed wind power generator system, can also be the total power wind powered generator system.
As shown in Figure 3, provided the reactive power compensation workflow diagram of central control unit of the present invention, it may further comprise the steps:
A. judge to have or not compensating signal, central control unit to judge whether to receive the reactive power compensation signal of blower fan master control system,, then control current transformer and move by normal operating conditions as not receiving the reactive power compensation signal; As receive reactive power compensation signal, then execution in step b;
B. activate the reactive power compensation state, central control unit judges that can the reactive power compensation state of current transformer activate, as can not, then activate again; If can activate, then execution in step c;
C. turn-off the pusher side power model, central control unit turn-offs the pusher side power model of current transformer, in order to carrying out reactive power compensation;
D. carry out reactive power compensation by set point, central control unit is according to the initial set value of the blower fan master control system that receives, and the net side power model of control current transformer carries out reactive power compensation;
E. detect voltage, current signal, central control unit is through the voltage and current signal of voltage detector, current detector detection of grid;
F. press the compensation of electrical network actual conditions, voltage, the current signal of central control unit through collecting through the control of drive circuit (11) to net side power model (3), carries out reactive power compensation by actual conditions to electrical network;
G. judge have that uncompensated stop signal, central control unit (7) judge whether to receive the blower fan master control system stop the reactive power compensation signal, as receive stop signal, then execution in step h; As do not receive stop signal, then repeated execution of steps e, f;
H. recover normal condition, central control unit 7 control current transformers recover normal operating conditions, finish reactive power compensation.
As shown in Figure 4, provided the reactive power compensation workflow diagram of blower fan master control system among the present invention, it may further comprise the steps:
1). judge whether to satisfy the off-grid condition, the blower fan master control system judges whether the wind-powered electricity generation unit satisfies the off-grid condition, as not satisfying, then waits to be detected; As satisfy the off-grid condition, then execution in step 2);
2). send the reactive power compensation signal, send the reactive power compensation status signal, carry out reactive power compensation with the control current transformer to central control unit (7);
3). send the reactive power compensation set point, to the initial set value of central control unit (7) transmission reactive power compensation, so that central control unit carries out reactive power compensation with set point;
4). judge whether the off-grid condition disappears, the blower fan master control system judges whether the off-grid condition of wind-powered electricity generation unit disappears; As not disappearing, then continue to judge; Disappear like the off-grid condition, then execution in step 5);
5). transmission stops the reactive power compensation signal, and the blower fan master control system is sent the stop signal of reactive power compensation to central control unit, so that current transformer finishes reactive power compensation.
Wherein, the condition that satisfies wind-powered electricity generation unit off-grid in the step 1) is: electrical network breaks down or the wind speed instability causes the wind-powered electricity generation unit to satisfy the off-grid condition.
Claims (6)
1. wind electric converter static reactive power compensation system, current transformer is positioned between the output and transformer (2) secondary side of wind-driven generator (1), and the primary side of transformer is the wind field electrical network; Current transformer comprises net side power model (3), pusher side power model (4) and central control unit (7); Net side power model is connected with transformer through net side filter (5), and the pusher side power model is connected with the output of wind-driven generator through pusher side filter (6); Net side power model is connected through the dc bus that comprises capacitance group with the pusher side power model; It is characterized in that: reactive compensation system comprises dc bus, net side power model, net side filter, central control unit, the transformer of capacitor group and voltage detector (9) and the current detector (10) that is arranged at Circuit Fault on Secondary Transformer, and the output of said voltage detector and current detector all is connected with central control unit; Central control unit is connected with drive circuit (11), and drive circuit control net side power model (3) carries out reactive power compensation; Central control unit also is connected with the blower fan master control system of the normal operation of control whole wind power generator.
2. wind electric converter static reactive power compensation according to claim 1 system, it is characterized in that: said net side power model (3) is made up of three full-bridge circuits, each full-bridge by two successively the full control power devices of series connection form; After being connected, the both positive and negative polarity of three full-bridges is connected to the two ends of dc bus; The control end of said full control power device all is connected with the output of drive circuit (11).
3. wind electric converter static reactive power compensation according to claim 1 and 2 system, it is characterized in that: said central control unit (7) is connected with the telecommunication unit (12) that carries out telecommunication.
4. wind electric converter static reactive power compensation according to claim 1 and 2 system; It is characterized in that: said wind-driven generator (1) is provided with the encoder that is connected with central control unit (7), and the outlet side of wind-driven generator is provided with rotor short-circuit protector (8).
5. the compensation method based on the described wind electric converter static reactive power compensation of claim 1 system is characterized in that, current transformer is realized reactive power compensation under the control action of central control unit, blower fan master control system;
The job step of central control unit (7) is following:
A. judge to have or not compensating signal, central control unit to judge whether to receive the reactive power compensation signal of blower fan master control system,, then control current transformer and move by normal operating conditions as not receiving the reactive power compensation signal; As receive reactive power compensation signal, then execution in step b;
B. activate the reactive power compensation state, central control unit judges that can the reactive power compensation state of current transformer activate, as can not, then activate again; If can activate, then execution in step c;
C. turn-off the pusher side power model, central control unit turn-offs the pusher side power model of current transformer, in order to carrying out reactive power compensation;
D. carry out reactive power compensation by set point, central control unit is according to the initial set value of the blower fan master control system that receives, and the net side power model of control current transformer carries out reactive power compensation;
E. detect voltage, current signal, central control unit is through the voltage and current signal of voltage detector, current detector detection of grid;
F. press the compensation of electrical network actual conditions, voltage, the current signal of central control unit through collecting through the control of drive circuit (11) to net side power model (3), carries out reactive power compensation by actual conditions to electrical network;
G. judge have that uncompensated stop signal, central control unit (7) judge whether to receive the blower fan master control system stop the reactive power compensation signal, as receive stop signal, then execution in step h; As do not receive stop signal, then repeated execution of steps e, f;
H. recover normal condition, central control unit 7 control current transformers recover normal operating conditions, finish reactive power compensation;
The job step of blower fan master control system is following:
1). judge whether to satisfy the off-grid condition, the blower fan master control system judges whether the wind-powered electricity generation unit satisfies the off-grid condition, as not satisfying, then waits to be detected; As satisfy the off-grid condition, then execution in step 2);
2). send the reactive power compensation signal, send the reactive power compensation status signal, carry out reactive power compensation with the control current transformer to central control unit (7);
3). send the reactive power compensation set point, to the initial set value of central control unit (7) transmission reactive power compensation, so that central control unit carries out reactive power compensation with set point;
4). judge whether the off-grid condition disappears, the blower fan master control system judges whether the off-grid condition of wind-powered electricity generation unit disappears; As not disappearing, then continue to judge; Disappear like the off-grid condition, then execution in step 5);
5). transmission stops the reactive power compensation signal, and the blower fan master control system is sent the stop signal of reactive power compensation to central control unit, so that current transformer finishes reactive power compensation.
6. wind electric converter static reactive-power compensation compensation method according to claim 5 is characterized in that: the condition that satisfies wind-powered electricity generation unit off-grid in the said step 1) is: electrical network breaks down or the wind speed instability causes the wind-powered electricity generation unit to satisfy the off-grid condition.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532520A (en) * | 2013-11-03 | 2014-01-22 | 南京南瑞集团公司 | Reactive power compensation device control method for preventing large-scale chain offline of wind generation sets |
| CN106451483A (en) * | 2016-08-01 | 2017-02-22 | 郭权利 | Double-fed wind turbine generator-based wind power plant reactive compensation apparatus and control method |
| CN106533147A (en) * | 2016-11-18 | 2017-03-22 | 深圳市禾望电气股份有限公司 | Standby method and device of converter system |
| CN113608096A (en) * | 2021-07-30 | 2021-11-05 | 华能定边新能源发电有限公司 | Detection instrument of reactive compensation equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888094A (en) * | 2010-07-09 | 2010-11-17 | 深圳市科陆电子科技股份有限公司 | Energy storage method for double-feed current transformer |
| CN102097812A (en) * | 2011-02-21 | 2011-06-15 | 深圳市禾望电气有限公司 | Wind generating set and reactive power control method thereof |
| CN102354989A (en) * | 2011-10-22 | 2012-02-15 | 东北电力大学 | Transient voltage control method of wind power station with constant-speed asynchronous wind turbine generator system |
| CN202797989U (en) * | 2012-08-02 | 2013-03-13 | 济南轨道交通装备有限责任公司 | Static reactive compensation system of wind-power converter |
-
2012
- 2012-08-02 CN CN2012102728654A patent/CN102769295A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888094A (en) * | 2010-07-09 | 2010-11-17 | 深圳市科陆电子科技股份有限公司 | Energy storage method for double-feed current transformer |
| CN102097812A (en) * | 2011-02-21 | 2011-06-15 | 深圳市禾望电气有限公司 | Wind generating set and reactive power control method thereof |
| CN102354989A (en) * | 2011-10-22 | 2012-02-15 | 东北电力大学 | Transient voltage control method of wind power station with constant-speed asynchronous wind turbine generator system |
| CN202797989U (en) * | 2012-08-02 | 2013-03-13 | 济南轨道交通装备有限责任公司 | Static reactive compensation system of wind-power converter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532520A (en) * | 2013-11-03 | 2014-01-22 | 南京南瑞集团公司 | Reactive power compensation device control method for preventing large-scale chain offline of wind generation sets |
| CN103532520B (en) * | 2013-11-03 | 2016-09-07 | 国网电力科学研究院 | A kind of reactive power compensation device control method defending the chain off-grid of large-scale wind power unit |
| CN106451483A (en) * | 2016-08-01 | 2017-02-22 | 郭权利 | Double-fed wind turbine generator-based wind power plant reactive compensation apparatus and control method |
| CN106533147A (en) * | 2016-11-18 | 2017-03-22 | 深圳市禾望电气股份有限公司 | Standby method and device of converter system |
| CN106533147B (en) * | 2016-11-18 | 2019-04-16 | 深圳市禾望电气股份有限公司 | A kind of idle method and device of converter system |
| CN113608096A (en) * | 2021-07-30 | 2021-11-05 | 华能定边新能源发电有限公司 | Detection instrument of reactive compensation equipment |
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Application publication date: 20121107 |