CN101893855B - Control method for guaranteeing safe operation of wind turbine - Google Patents
Control method for guaranteeing safe operation of wind turbine Download PDFInfo
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- CN101893855B CN101893855B CN2009100689475A CN200910068947A CN101893855B CN 101893855 B CN101893855 B CN 101893855B CN 2009100689475 A CN2009100689475 A CN 2009100689475A CN 200910068947 A CN200910068947 A CN 200910068947A CN 101893855 B CN101893855 B CN 101893855B
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to a control method for guaranteeing the safe operation of a wind turbine. The method comprises the following steps of: (1) generating pulse signals by a master control system in real time and sending the signals to a pulse detector; (2) detecting the pulse signals sent by the master control system by the pulse detector in real time, and executing a step (3) when a detectionresult of the pulse detector has an abnormality, or else circularly executing the step (1) and the step (2); (3) outputting contact signals to a safety system by the pulse detector; (4) disconnectinga safety chain after the safety system detects the contact signals and sending a control command to a variable pitch system; and (5) controlling the wind turbine to be shut down by the variable pitchsystem after receiving the control command. The method has reasonable design, judges whether the master control system has a failure or not through detecting the pulse signals of the master control system in real time and can control the wind turbine to be safely shut down in real time after the failure occurs, thereby effectively protecting the wind turbine equipment and guaranteeing the safety operation of the wind turbine.
Description
Technical field
The invention belongs to wind power generation field, especially a kind of control method that guarantees safe operation of wind turbine.
Background technology
Serious day by day at current energy crisis and problem of environmental pollution worldwide obtained swift and violent development as the wind-power electricity generation of regenerative resource, and the wind-powered electricity generation unit of MW class has also obtained application more and more widely.The wind-powered electricity generation unit is that a cover has automatic adjusting, unattended full-automatic equipment, the master control system in the wind-powered electricity generation unit be responsible for the wind-powered electricity generation unit speed control, become oar control, power control, startups/shutdowns automatically, set state detection, logout or the like and work.If break down or paralyse as the master control system of wind-powered electricity generation unit core, the wind-powered electricity generation unit will be out of hand, and its security of operation can be subjected to serious threat.At present; the method that a security system is installed between master control system and pitch-controlled system that the wind-powered electricity generation unit adopts usually realizes the protection to the wind-powered electricity generation unit; the problem of its existence is: security system is only carried out safety protection function under the control of master control system; after if master control system breaks down or crashes; security system can not start defencive function automatically; break down in master control system and to trigger in a period of time of security system condition; all devices in the wind-powered electricity generation unit can be out of hand; make the wind-powered electricity generation generating unit speed rise always; cause gear box lubricating oil not enough; bearing temperature is too high; lack the appearance of problems such as generator cooling air; these problems can produce very big infringement to unit; when limiting condition occurs; if the trigger condition of security system (as hypervelocity etc.) can't trigger security system action, destructive disaster will appear in the wind-powered electricity generation unit.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art; a kind of control method that guarantees safe operation of wind turbine is proposed; this method judges by the pulse signal of real-time detection master control system whether master control system breaks down, and can control the wind-powered electricity generation unit safety in time, exactly and shut down after master control system breaks down.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of control method that guarantees safe operation of wind turbine may further comprise the steps:
(1) the real-time production burst signal of master control system and send to pulse detector;
(2) pulse detector detects the pulse signal that master control system is sent in real time, when execution in step (3) when unusual appears in the testing result of pulse detector, otherwise circulation execution in step (1) and (2);
(3) pulse detector is to security system output contact signal;
(4) security system detects and disconnects theft-resistant link chain behind the contact point signal and to the pitch-controlled system transmitting control commands;
(5) pitch-controlled system is controlled the wind-powered electricity generation compressor emergency shutdown after receiving control command, realizes the effective control to safe operation of wind turbine.
And the pulsewidth of the pulse signal that master control system is sent is 500ms, and the dutycycle of this pulse signal is 1: 1, and the voltage of this pulse signal is 24VDC.
And, unusually comprising appears in the testing result of described pulse detector: pulse detector does not receive pulse signal, perhaps the pulse signal frequency that sends of the pulse signal frequency that receives of pulse detector and master control system is inconsistent, and perhaps the pulse signal voltage that sends of the pulse signal voltage of pulse detector reception and master control system is unequal.
Advantage of the present invention and good effect are:
1. this control method pulse signal of adopting pulse detector to detect master control system in real time judges whether master control system breaks down; when can judge that master control system breaks down when unusual and to security system output contact signal, being shut down by security system and pitch-controlled system control wind-powered electricity generation unit safety appears in the testing result of pulse detector.This method has solved in the break down problem out of control of after wind group of motors of master control system, has realized the effective protection to the wind-powered electricity generation unit, has avoided the infringement to the wind-powered electricity generation unit, has guaranteed the safe operation of wind-powered electricity generation unit.
2. this control method is simple to the determination methods that master control system breaks down; can judge master control system in time, exactly breaks down; cause master control system to crash owing to fortuitous event after, control command can be moved at once and in time send to security system shuts down the wind-powered electricity generation unit safety to pitch-controlled system.
3. the present invention is reasonable in design; whether the master control system of judging its pulse signal by real-time detection master control system breaks down and can control the safe shutdown of wind-powered electricity generation unit in time after breaking down; realized effective protection, guaranteed the safe operation of wind-powered electricity generation unit the wind-powered electricity generation unit equipment.
Description of drawings
Fig. 1 is a control principle block diagram of realizing control system of wind turbines of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described.
A kind of control method that guarantees safe operation of wind turbine realizes under former control system of wind turbines.Realize control system of wind turbines of the present invention as shown in Figure 1; connect and compose successively by master control system, pulse detector, security system and pitch-controlled system; master control system can generate the pulse signal of certain pulsewidth; pulse signal output end by master control system is connected with the pulse signal input terminal of pulse detector; the output terminal of pulse detector is connected with the input end of security system by contact switch; the output terminal of security system is connected with the input end of pitch-controlled system, and what this security system adopted is the fail safe system.The difference of this control system of wind turbines and existing control system of wind turbines is: increased a pulse detector between master control system and security system; master control system can be exported the pulse signal of certain pulsewidth incessantly; pulse detector can detect the pulse signal that master control system is sent in real time; if it is undesired that pulse detector can not be received pulse signal or the pulse signal of receiving; judge that then master control system breaks down; output terminal output contact signal by pulse detector is given security system, by security system control pitch-controlled system the wind-powered electricity generation unit safety is shut down.
A kind of control method that guarantees safe operation of wind turbine may further comprise the steps:
1, the real-time production burst signal of master control system and send to pulse detector.
Master control system by the automatic production burst signal of its inner software and the pulse signal output end by master control system incessantly to the transmission of pulse detector, the voltage of this pulse signal is 24VDC, pulse signal is that pulsewidth is 500ms, the dutycycle of this pulse signal is 1: 1, promptly adopts the low level uninterrupted pulse signal of 250ms high level and 250ms.
2, pulse detector detects the pulse signal that master control system is sent in real time, when execution in step 3 when unusual appears in the testing result of pulse detector, otherwise circulation execution in step 1 and 2.
Pulse detector receives the pulse signal that master control system is sent in real time, if the pulse signal that letter pulse signal that pulse detector receives and master control system are sent is in full accord, thinks that then master control system is working properly, repeated execution of steps 1 and step 2.If pulse detector has following situation: (1) pulse detector does not receive pulse signal; (2) pulse signal frequency that sends of the pulse signal frequency that receives of pulse detector and master control system is inconsistent; (3) the pulse signal voltage rank sent of the pulse signal voltage that receives of pulse detector and master control system is inconsistent, as long as one of above-mentioned three kinds of situations of appearance can think that master control system breaks down, need shut down processing to the wind-powered electricity generation unit, enters step 3.
3, pulse detector, when promptly abnormal conditions (as deadlock, outage etc.) appear in master control system disconnects the make and break contact between pulse detector and the security system with notice notice security system to security system output contact signal.
4, security system detects and disconnects theft-resistant link chain behind the contact point signal and to the pitch-controlled system transmitting control commands, this control command (EFC instruction) should be normal condition when electric, represent to send urgent feathering EFC instruction during dead electricity, this can guarantee that situations such as wiring disconnection, power interruption all can allow the urgent feathering of blade.
5, pitch-controlled system is controlled the wind-powered electricity generation compressor emergency shutdown after receiving control command; its detailed process is: pitch-controlled system carries out power down process after detecting control command (EFC instruction), disconnects mains supply, powers from back-up source; drive blade to the feathering position, allow unit safety shut down.
By above step, can judge in time whether master control system breaks down and after breaking down, can control the safe shutdown of wind-powered electricity generation unit in time, realized effective protection to the wind-powered electricity generation unit equipment, guaranteed the safe operation of wind-powered electricity generation unit.
It is emphasized that; embodiment of the present invention is illustrative; rather than it is determinate; therefore the present invention is not limited to the embodiment described in the embodiment; every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope of protection of the invention equally.
Claims (3)
1. control method that guarantees safe operation of wind turbine is characterized in that: may further comprise the steps:
(1) the real-time production burst signal of master control system and send to pulse detector;
(2) pulse detector detects the pulse signal that master control system is sent in real time, when execution in step (3) when unusual appears in the testing result of pulse detector, otherwise circulation execution in step (1) and (2);
(3) pulse detector is to security system output contact signal;
(4) security system detects and disconnects theft-resistant link chain behind the contact point signal and to the pitch-controlled system transmitting control commands;
(5) pitch-controlled system is controlled the wind-powered electricity generation compressor emergency shutdown after receiving control command, realizes the effective control to safe operation of wind turbine.
2. the control method that guarantees safe operation of wind turbine according to claim 1 is characterized in that: the pulsewidth of the pulse signal that master control system is sent is 500ms, and the dutycycle of this pulse signal is 1: 1, and the voltage of this pulse signal is 24VDC.
3. the control method that guarantees safe operation of wind turbine according to claim 1, it is characterized in that: comprising unusually appears in the testing result of described pulse detector: pulse detector does not receive pulse signal, perhaps the pulse signal frequency that sends of the pulse signal frequency that receives of pulse detector and master control system is inconsistent, and perhaps the pulse signal voltage that sends of the pulse signal voltage of pulse detector reception and master control system is unequal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100689475A CN101893855B (en) | 2009-05-20 | 2009-05-20 | Control method for guaranteeing safe operation of wind turbine |
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| CN2009100689475A CN101893855B (en) | 2009-05-20 | 2009-05-20 | Control method for guaranteeing safe operation of wind turbine |
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| CN101893855A CN101893855A (en) | 2010-11-24 |
| CN101893855B true CN101893855B (en) | 2011-10-19 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011695A (en) * | 2010-12-10 | 2011-04-13 | 苏州能健电气有限公司 | Wind turbine pitch system |
| CN102831050A (en) * | 2011-06-14 | 2012-12-19 | 湘潭大学 | Abnormal behavior detection and guide safety method for control software of wind generation set |
| CN102287331B (en) * | 2011-07-27 | 2013-05-29 | 国电联合动力技术有限公司 | Urgent feathering triggering system and method for variable pitch wind generator system |
| CN102385360A (en) * | 2011-09-06 | 2012-03-21 | 国电联合动力技术有限公司 | Long-distance control system of wind-driven power generating machine set and control method thereof |
| CN102748213B (en) * | 2012-07-10 | 2016-02-03 | 国电联合动力技术有限公司 | A kind of wind power generating set engine off control system and method |
| CN103226334B (en) * | 2013-04-28 | 2015-11-18 | 东方电气集团东方汽轮机有限公司 | Hardware security chain control method in a kind of wind turbine control system escalation process |
| CN104833036B (en) * | 2014-02-07 | 2018-01-23 | 海尔集团公司 | A kind of how main line control machine collision detection method and main line control machine |
| CN105508136A (en) * | 2015-12-28 | 2016-04-20 | 北京天诚同创电气有限公司 | Variable pitch control device and method for wind generating set and variable pitch system |
| CN107313900A (en) * | 2017-06-28 | 2017-11-03 | 沈阳华创风能有限公司 | Hub of wind power generator blade position monitoring method and system |
| CN109931217B (en) * | 2017-12-15 | 2020-05-12 | 新疆金风科技股份有限公司 | Wind generating set shutdown control method and system |
| CN112443452B (en) * | 2019-08-30 | 2022-07-08 | 北京金风科创风电设备有限公司 | Communication interruption self-resetting control method and device for wind driven generator |
| CN111120224B (en) * | 2019-12-27 | 2024-02-20 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Testing device and testing method for safety protection system of wind turbine generator |
| CN114000973B (en) * | 2021-10-29 | 2023-09-12 | 重庆科凯前卫风电设备有限责任公司 | Wind turbine generator safety controller information transmission method based on digital output pulse |
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| US7442009B2 (en) * | 2006-01-06 | 2008-10-28 | Hamilton Sundstrand Corporation | Driving device for raising or lowering an airfoil |
| CN101311527A (en) * | 2007-05-23 | 2008-11-26 | 连云港杰瑞电子有限公司 | Pitch control system of wind mill generator |
| CN101425774A (en) * | 2008-09-27 | 2009-05-06 | 上海输配电股份有限公司 | Controller for wind-driven generator group using PAC platform |
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- 2009-05-20 CN CN2009100689475A patent/CN101893855B/en active Active
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| US7442009B2 (en) * | 2006-01-06 | 2008-10-28 | Hamilton Sundstrand Corporation | Driving device for raising or lowering an airfoil |
| CN101311527A (en) * | 2007-05-23 | 2008-11-26 | 连云港杰瑞电子有限公司 | Pitch control system of wind mill generator |
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Effective date of registration: 20230711 Address after: No. 100, Hangtian Road, Tianjin Pilot Free Trade Zone (Airport Economic Zone), Binhai, Tianjin 300450 Patentee after: TIANJIN RUIYUAN ELECTRICAL Co.,Ltd. Address before: 300381 No. 39 Minhe Road, Xiqing economic and Technological Development Zone, Tianjin Patentee before: Tianjin Ruineng electric Co.,LTD. |
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