CN101761543A - Overspeed protective device and overspeed protective method of wind driven generator - Google Patents
Overspeed protective device and overspeed protective method of wind driven generator Download PDFInfo
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- CN101761543A CN101761543A CN200810207721A CN200810207721A CN101761543A CN 101761543 A CN101761543 A CN 101761543A CN 200810207721 A CN200810207721 A CN 200810207721A CN 200810207721 A CN200810207721 A CN 200810207721A CN 101761543 A CN101761543 A CN 101761543A
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- driven generator
- wind
- overspeed protective
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Abstract
The invention discloses an overspeed protective device and an overspeed protective method of a wind driven generator. The overspeed protective device of the wind driven generator can effectively send an alarm signal in time under a specific threshold value, and the protective method is convenient to operate and solves the problem of poor reliability and operability of the prior art. The overspeed protective device of the wind driven generator comprises a counter and a pulse circuit which are connected in series. The overspeed protective method of the wind driven generator comprises an inputting step and an alarming step, wherein in the inputting step, the rotate speed of the wind driven genitor is input into the threshold of the counter, and simultaneously a high-speed counting clock is input into a counter clock to record the rotate speed of the wind driven genitor; and in the alarming step, when the number of clocks recorded by the counter in the period corresponding to the rotate speed of the wind driven genitor is greater than the predetermined threshold value, the pulse alarming pulse circuit can output alarming signals.
Description
Technical field
The present invention relates to a kind of overspeed governor switch and guard method of wind-driven generator.
Background technique
Along with expanding economy, Chinese is becoming tight the energy and power supply day, and government and industrial circle have significantly surpassed water power to the concern and the attention degree of wind-powered electricity generation construction.The total amount that wind energy resources can be developed in the whole world is approximately 2 times of human energy demand total amount, and the rich and recyclability of wind energy is the reason of tool attraction.But because the development degree of present wind power technology is restricting the development of wind-powered electricity generation industry, the wind-powered electricity generation output of China is less than 1% of China's gross generation at present.The wind-powered electricity generation potentiality are unlimited, and technology is crucial.Wind generating technology especially control technique has obtained develop rapidly in recent years.But the core of control technique is not grasped by domestic technical team fully, especially most important resist technology link.At present, generator overspeed protection technology is still immature, lacks operability and reliability.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of overspeed protection method of wind-driven generator is provided, not only can improve the reliability of generator operation, and be convenient to operation.
The present invention seeks to realize like this:
A kind of overspeed governor switch of wind-driven generator comprises counter and impulse circuit, and counter is connected mutually with impulse circuit.What the thresholding of described counter was imported is the tach signal of generator, and what the clock of counter was imported is the high speed technology CLK clock.
A kind of overspeed protection method of wind-driven generator may further comprise the steps:
Step S1: input step, with the rotating speed enter counter thresholding of generator, simultaneously with high-speed counting clock enter counter clock;
Step S2: alarming step, when the clock number of noting at the pairing cycle inside counting of generator speed device during greater than predetermined threshold values, impulse circuit just can output alarm signal, thereby plays the effect of generator overspeed protection.
The present invention has following good effect: with existing generator overspeed protection method ratio; the overspeed protection method of a kind of wind-driven generator provided by the invention can in time, effectively be sent alarm signal under specific threshold values; and this method simple operation, solved reliability and the not strong problem of operability in the existing resist technology.
Description of drawings
Fig. 1 is the structural representation of overspeed governor switch of a kind of wind-driven generator of one of the present invention;
Fig. 2 is the flow chart of overspeed protection method of a kind of wind-driven generator of two of the present invention.
Embodiment
Also in conjunction with the accompanying drawings the present invention is described in detail below by specific embodiment:
The overspeed governor switch of a kind of wind-driven generator of one of the present invention; comprise counter 1 and impulse circuit 2; counter 1 is connected mutually with impulse circuit 2; what the thresholding 3 of counter was imported is the tach signal of generator; what the clock 4 of counter was imported is the high-speed counting CLK clock; output terminal 5 output alarm signals, as shown in Figure 1.
In the present embodiment, counter 1 is made up of 20 digit counters in the FPGA, generator speed F=100Hz, and the corresponding cycle is T=10mS, predetermined threshold values N=1005.
The overspeed protection method of a kind of wind-driven generator of two of the present invention realizes that the step of the object of the invention is as follows, as shown in Figure 2:
Step S1: input step, with the thresholding 3 of the rotating speed F enter counter 1 of generator, simultaneously with the high-speed counting clock CLK enter counter clock 4 of 1MHz;
Step S2: alarming step, in the time period, the CLK clock number of noting is n=CLK/F=10000 at T=10mS.As n during greater than threshold values N=1005, the impulse circuit 2 of then reporting to the police is by output terminal 5 output alarm signals.
Above mode of execution has been described in detail the present invention, and those skilled in the art can make the many variations example to the present invention according to the above description.Thereby some details in the mode of execution should not constitute limitation of the invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.
Claims (3)
1. the overspeed governor switch of a wind-driven generator is characterized in that this device comprises counter and impulse circuit, and described counter is connected mutually with impulse circuit.
2. the overspeed governor switch of a kind of wind-driven generator according to claim 1, it is characterized in that counter the thresholding input be the tach signal of generator, what the clock of counter was imported is the high-speed counting CLK clock.
3. the overspeed protection method of a wind-driven generator is characterized in that this method may further comprise the steps:
Step S1: input step, with the tach signal enter counter thresholding of generator, simultaneously with high-speed counting CLK clock enter counter clock;
Step S2: alarming step, when the clock number of noting at the pairing cycle inside counting of generator speed device during greater than predetermined threshold values, the impulse circuit output alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810207721A CN101761543A (en) | 2008-12-25 | 2008-12-25 | Overspeed protective device and overspeed protective method of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810207721A CN101761543A (en) | 2008-12-25 | 2008-12-25 | Overspeed protective device and overspeed protective method of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101761543A true CN101761543A (en) | 2010-06-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810207721A Pending CN101761543A (en) | 2008-12-25 | 2008-12-25 | Overspeed protective device and overspeed protective method of wind driven generator |
Country Status (1)
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| CN (1) | CN101761543A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928613A (en) * | 2012-11-22 | 2013-02-13 | 昆山北极光电子科技有限公司 | Electronic overspeed protection method for rotational speed of generator |
| CN103256173A (en) * | 2012-02-20 | 2013-08-21 | 华锐风电科技(集团)股份有限公司 | Method and system for monitoring fan and wind turbine monitoring system |
| CN104963809A (en) * | 2015-06-25 | 2015-10-07 | 北京天诚同创电气有限公司 | Rotating speed protection method and system of wind generating set |
| CN106050559A (en) * | 2016-06-20 | 2016-10-26 | 大唐（赤峰）新能源有限公司 | Detecting method and device for wind turbine generator overspeed protection system |
| CN106089600A (en) * | 2016-06-20 | 2016-11-09 | 大唐（赤峰）新能源有限公司 | The detection device of a kind of Wind turbines overspeed protection system and detection method thereof |
-
2008
- 2008-12-25 CN CN200810207721A patent/CN101761543A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256173A (en) * | 2012-02-20 | 2013-08-21 | 华锐风电科技(集团)股份有限公司 | Method and system for monitoring fan and wind turbine monitoring system |
| CN103256173B (en) * | 2012-02-20 | 2016-08-03 | 华锐风电科技(集团)股份有限公司 | Fan monitoring method and system, blower fan group monitoring system |
| CN102928613A (en) * | 2012-11-22 | 2013-02-13 | 昆山北极光电子科技有限公司 | Electronic overspeed protection method for rotational speed of generator |
| CN104963809A (en) * | 2015-06-25 | 2015-10-07 | 北京天诚同创电气有限公司 | Rotating speed protection method and system of wind generating set |
| CN104963809B (en) * | 2015-06-25 | 2017-11-21 | 北京天诚同创电气有限公司 | Rotating speed protection method and system of wind generating set |
| CN106050559A (en) * | 2016-06-20 | 2016-10-26 | 大唐（赤峰）新能源有限公司 | Detecting method and device for wind turbine generator overspeed protection system |
| CN106089600A (en) * | 2016-06-20 | 2016-11-09 | 大唐（赤峰）新能源有限公司 | The detection device of a kind of Wind turbines overspeed protection system and detection method thereof |
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Open date: 20100630 |