CN202144771U - Emergency feathering triggering system of variable-pitch wind turbine - Google Patents
Emergency feathering triggering system of variable-pitch wind turbine Download PDFInfo
- Publication number
- CN202144771U CN202144771U CN201120268323U CN201120268323U CN202144771U CN 202144771 U CN202144771 U CN 202144771U CN 201120268323 U CN201120268323 U CN 201120268323U CN 201120268323 U CN201120268323 U CN 201120268323U CN 202144771 U CN202144771 U CN 202144771U
- Authority
- CN
- China
- Prior art keywords
- pulse
- signal
- low level
- module
- trigger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
Landscapes
- Wind Motors (AREA)
Abstract
The utility model discloses an emergency feathering triggering system of a variable-pitch wind turbine. The system confirms whether the emergency feathering is triggered according to low level triggering signals output by a safety control system. The system comprises a pulse generating module (which is formed by the means that a pulse generator is connected with an 'and' logical module), a signal transmission channel and a pulse detecting and triggering module; the pulse generator and the low level triggering signal form sustained and frequency-fixed pulse signal output through the 'and' logical module when the low level triggering signal is under a high level; the pulse generator and the low level triggering signal form sustained low level signal output through the 'and' logical module when the low level triggering signal is changed to be at a low level; and the output signal is transmitted to the pulse detecting and triggering module through the signal transmission channel, and the emergency feathering is confirmed whether to be triggered according to the condition of pulse signals, thereby avoiding the condition that the emergency feathering can not be effectively trigged caused by the abnormality of the signal transmission channel.
Description
Technical field
The utility model relates to wind-powered electricity generation unit safety control field, particularly, relates to the urgent feathering triggering system of a kind of feather wind-powered electricity generation unit.
Background technique
The pitch-controlled wind-driven generator group is to MW class, large scale development; Unit to safety protection control require increasingly high; Wherein urgent feathering action (apace blade angle being driven near the shutdown angle of 90 degree from 0 degree or work at present angle) is the most key effective pneumatic stop-working protection action that unit carries out under abnormal conditions; If the urgent feathering action of pitch-controlled system is not triggered effectively, can cause very serious consequence in needs.The control system of wind power generating set generally is divided into two levels, and a level is a master control system, is responsible for torque control, the control of change oar and the supervisory control of control unit conventional operation; The other is the safety control system of unit; Reliability requirement is higher than master control system; And be independent of master control system, mainly detect hypervelocity, overpower, vibration, the driftage of unit and turn round cable and master control system inefficacy etc., when any situation is detected; Safety control system need trigger the urgent feathering action and other protection actions of pitch-controlled system, and quick shutdown is with the protection unit safety.
Cable detection and master control system failure detection etc. are turned round in overspeed detection in the unit running process, overpower detection, vibration detection, driftage all has comparatively ripe solution, can detect effectively; When detecting above-mentioned operating mode, need a trigger signal to trigger pitch-controlled system and begin urgent feathering action to realize pneumatic parking, the protection unit safety.Current triggering mode is that low level triggers; When unit operation during in normal condition; The low level trigger signal of safety control system output is in high level; When detecting above-mentioned operating mode, then this low level trigger signal becomes low level by high level, through become the urgent feathering action that low level triggers pitch-controlled system by high level.
The low level trigger signal of safety control system will be passed through tenminal block, slip ring and circuit could arrive pitch-controlled system; In this process, has certain uncertainty; There is the effectively problem of triggering in conventional low level triggering mode; Just exist a kind of maybe: when safety system detects unusual service condition, the output trigger signal of safety system becomes low level by high level, but because the various abnormal causes (like slip ring internal problem, tenminal block problem etc.) of signal transmission passage; The other end signal at signal transmission pathway still keeps high level; Then the urgent feathering action of pitch-controlled system can not be by timely triggering, and unit can not be shut down effectively in time, very likely causes serious consequence.
The model utility content
The purpose of the utility model is to the problems referred to above that exist in the existing technology, provides a kind of feather wind-powered electricity generation unit urgent feathering triggering system, guarantees that unit can trigger urgent feathering action, protection unit safety effectively, safely, in time under abnormal conditions.
The technological scheme that realizes above-mentioned purpose is following:
The urgent feathering triggering system of a kind of feather wind-powered electricity generation unit, the low level trigger signal of exporting according to safety control system determines whether to carry out urgent feathering triggering, comprising:
Pulse generating module, by pulse oscillator with " with " logic module connects to form; When the low level trigger signal is in high level, pulse oscillator through " with " logic module and low level trigger signal constitute a pulse signal output lasting, fixed frequency; When the low level trigger signal becomes low level, pulse oscillator through " with " logic module and low level trigger signal constitute a lasting low level signal output;
Signal transmission pathway is used for the signal that the transmission pulse generating module is exported;
Pulse detection and trigger module; Connect to form successively by pulse detector, trigger module and logic module; Pulse detector is used for the signal that transmits through signal transmission pathway is carried out the pulse timing counting; The paired pulses frequency calculates in the certain hour yardstick, when pulse number too small or near 0 the time then logic module judge that the pulse signal that continues fixed frequency lost efficacy, start trigger module and trigger urgent feathering action; Then logic module judges that pulse signal is effective when detecting pulse signal lasting, fixed frequency, and trigger module does not trigger urgent feathering action.
Further; Said signal transmission pathway comprises slip ring, circuit and two tenminal blocks; Said " with " output point of logic module to slip ring, is wired to the input point of pulse detector through a terminated line terminal connections again through the tenminal block of the other end through slip ring inside.
Compared with prior art, the beneficial effect of the utility model is:
In the utility model; When the low level trigger signal of safety control system output is in high level; Show that unit normally moves, pulse oscillator through " with " logic module and low level trigger signal constitute a pulse signal output lasting, fixed frequency; When the low level trigger signal becomes low level, show that unit breaks down, pulse oscillator through " with " logic module and low level trigger signal constitute a lasting low level signal output, this moment pulse-free signal output.
Be that the utility model is on the basis that existing low level triggers; Pulse signal through that continue, fixing characterizes the normal operation of unit; Sort signal can not cause urgent feathering to trigger failure owing to the pseudo-normal signal that causes unusually of signal transmission, has avoided because the urgent feathering that signal transmission pathway causes unusually can not be by the situation of effective triggering.When unusual condition appears in the signal transmission pathway link; Signal may rest on and continue on the high level; Also may rest on and continue on the low level; But any situation all can not be kept pulse signal lasting, fixed frequency, thereby avoided when the urgent feathering of safety control system output low level signal triggering on the signal transmission pathway because the pseudo-high level signal that uncontrollable factor causes causes the problem that urgent feathering can't triggered as normal.
The utility model is mainly used in modern horizontal axis pitch-controlled wind-driven generator group, can improve the protection abilities of unit under rugged environment, improves the reliability of unit safety control system.
Description of drawings
Fig. 1 is the system architecture diagram of the utility model;
Fig. 2 is pulse detection and trigger module internal logic figure.
Embodiment
As shown in Figure 1; The urgent feathering triggering system of feather wind-powered electricity generation unit of the utility model; Low level trigger signal according to safety control system output determines whether to carry out urgent feathering triggering, comprises three parts: pulse generating module, signal transmission pathway and pulse detection and trigger module.
Pulse generating module, by pulse oscillator with " with " logic module connects to form; The low level trigger signal combines and can in the safety control system of unit, realize with pulse generating module; When safety control system judges that unit normally moves; This module is responsible for producing the pulse signal of lasting fixed frequency, when the urgent feathering of unusual condition needs appears in unit, stops to produce pulse signal.Safety control system is generally realized by the programmable safe controller; Use pulse generating module wherein; " with " logic module can realize such logic: when the low level trigger signal is in high level, pulse oscillator through " with " logic module constitutes a pulse signal output lasting, fixed frequency with the low level trigger signal; When the low level trigger signal becomes low level, pulse oscillator through " with " logic module and low level trigger signal constitute a lasting low level signal output, thereby trigger urgent feathering through signal transmission pathway.The low level trigger signal here when the low level trigger signal becomes low level by high level, shows that other logic modules detect and judge unit and need trigger urgent feathering from the output of other logic modules of safety control system.
Signal transmission pathway is the hardware path that connects unit safety control system and pitch-controlled system, accomplishes the transmission of signal; Electric control system through unit realizes; Comprise slip ring, circuit and two tenminal blocks; In the safety control system " with " output point of logic module to slip ring, is wired to the input point of pulse detector through a terminated line terminal connections again through the tenminal block of the other end through slip ring inside; Whole signal transmission pathway is realized with design according to the piece electrical wiring topology of unit.
Pulse detection and trigger module; Can realize in the controller of pitch-controlled system that connected to form successively by pulse detector, trigger module and logic module, internal logic is as shown in Figure 2; Pulse detector is used for the signal that transmits through signal transmission pathway is carried out the pulse timing counting; The paired pulses frequency calculates in the certain hour yardstick, when pulse number too small or near 0 the time then logic module judge that the pulse signal that continues fixed frequency lost efficacy, start trigger module and trigger urgent feathering action; Then logic module judges that pulse signal is effective when detecting pulse signal lasting, fixed frequency, and trigger module does not trigger urgent feathering action.Reset signal shown in Figure 2 is every to be taken place once at a distance from regular time, N be one greater than 0 integer (generally getting 1 gets final product), pulse detector (Counter) can regularly receive reset signal by zero clearing; Be output as 0, after zero clearing, when can't accept lasting pulse signal; Then the output of pulse detector can not increase; This moment 0, the GT module was output as 0 thus less than N, can judge not generation of pulse signal after zero clearing; In addition, the output and the reset signal of GT module are got " OR ", are that the erroneous judgement of GT module during for fear of zero clearing is disconnected.
The foregoing description is on the basis that existing low level triggers; The pulse signal of the fixed frequency that adopt to continue representes that wind power generating set safety normally moves; Then trigger urgent feathering when detecting pulse signal; The protection unit safety has improved the reliability of unit safety protection under rugged environment.
What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (2)
1. urgent feathering triggering system of feather wind-powered electricity generation unit determines whether to carry out urgent feathering according to the low level trigger signal of safety control system output and triggers, and it is characterized in that, comprising:
Pulse generating module, by pulse oscillator with " with " logic module connects to form; When the low level trigger signal is in high level, pulse oscillator through " with " logic module and low level trigger signal constitute a pulse signal output lasting, fixed frequency; When the low level trigger signal becomes low level, pulse oscillator through " with " logic module and low level trigger signal constitute a lasting low level signal output;
Signal transmission pathway is used for the signal that the transmission pulse generating module is exported;
Pulse detection and trigger module; Connect to form successively by pulse detector, trigger module and logic module; Pulse detector is used for the signal that transmits through signal transmission pathway is carried out the pulse timing counting; The paired pulses frequency calculates in the certain hour yardstick, when pulse number too small or near 0 the time then logic module judge that the pulse signal that continues fixed frequency lost efficacy, start trigger module and trigger urgent feathering action; Then logic module judges that pulse signal is effective when detecting pulse signal lasting, fixed frequency, and trigger module does not trigger urgent feathering action.
2. triggering system according to claim 1; It is characterized in that; Said signal transmission pathway comprises slip ring, circuit and two tenminal blocks; Said " with " output point of logic module to slip ring, is wired to the input point of pulse detector through a terminated line terminal connections again through the tenminal block of the other end through slip ring inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120268323U CN202144771U (en) | 2011-07-27 | 2011-07-27 | Emergency feathering triggering system of variable-pitch wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120268323U CN202144771U (en) | 2011-07-27 | 2011-07-27 | Emergency feathering triggering system of variable-pitch wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202144771U true CN202144771U (en) | 2012-02-15 |
Family
ID=45580703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120268323U Expired - Lifetime CN202144771U (en) | 2011-07-27 | 2011-07-27 | Emergency feathering triggering system of variable-pitch wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202144771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287331A (en) * | 2011-07-27 | 2011-12-21 | 国电联合动力技术有限公司 | Urgent feathering triggering system and method for variable pitch wind generator system |
-
2011
- 2011-07-27 CN CN201120268323U patent/CN202144771U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287331A (en) * | 2011-07-27 | 2011-12-21 | 国电联合动力技术有限公司 | Urgent feathering triggering system and method for variable pitch wind generator system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101893855B (en) | Control method for guaranteeing safe operation of wind turbine | |
| CN102287331B (en) | Urgent feathering triggering system and method for variable pitch wind generator system | |
| CN107781106B (en) | A kind of wind generating set pitch control of no independent control is away from system failure guard method | |
| CN102748213B (en) | A kind of wind power generating set engine off control system and method | |
| CN101571104B (en) | Safety chain control system | |
| CN102278278B (en) | Safety control system and safety control method of wind generating set | |
| WO2019114161A1 (en) | Shutdown control method and system for wind turbine generator set | |
| CN103629048A (en) | Intelligent pitch control system of wind turbine generator and pitch control method thereof | |
| CN102709944B (en) | Control method of low voltage through of wind driven generator set based on DGNR variable pitch system | |
| CN102418662A (en) | Safety operation control system of wind driven generator | |
| CN104405582A (en) | Wheel hub safety chain of megawatt wind generating set and control method thereof | |
| AU2014257841B2 (en) | Wind park and method for controlling a wind park | |
| CN105240214A (en) | Safety circuit for overspeed protection of wind turbine generating set | |
| CN104765004A (en) | Detection method and system for variable-pitch battery of wind generating set | |
| CN104047803B (en) | A kind of electronic feathering controlling method | |
| CN202645850U (en) | Emergency shutdown control system of wind generating set | |
| CN202144771U (en) | Emergency feathering triggering system of variable-pitch wind turbine | |
| CN201372895Y (en) | Safety chain control system | |
| CN203835620U (en) | Over rotation speed protection device of large wind generating set | |
| CN101964533A (en) | Low voltage ride-through variable pitch control system for double-fed wind turbine generator unit | |
| CN109950962B (en) | Super-capacitor management system and management method for wind generating set pitch system | |
| CN208416790U (en) | A kind of wind power generating set hypervelocity variable pitch protection structure | |
| CN104747370A (en) | Variable pitch system with motor overspeed protection and EFC limit protection functions | |
| CN202789322U (en) | High-speed shaft brake safety system of wind power generator set | |
| CN212376789U (en) | Backup over-speed protection control system of wind generating set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120215 Effective date of abandoning: 20130529 |
|
| RGAV | Abandon patent right to avoid regrant |