CN102680906B - Method for testing blade-changing battery of megawatt wind generating set - Google Patents
Method for testing blade-changing battery of megawatt wind generating set Download PDFInfo
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- CN102680906B CN102680906B CN201210172047.7A CN201210172047A CN102680906B CN 102680906 B CN102680906 B CN 102680906B CN 201210172047 A CN201210172047 A CN 201210172047A CN 102680906 B CN102680906 B CN 102680906B
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Abstract
The invention discloses a method for testing a blade-changing battery of a megawatt wind generating set, and the method comprises the following steps of (1) switching the wind generating set from a standby mode to a maintenance mode on the premise that the safety of the wind generating set is ensured; (2) manually controlling a blade-changing system to drive three blades to zero; and (3) disconnecting a safe chain and enabling the three blades of the blade-changing system to be simultaneously feathered to 91 DEG by utilizing the blade-changing battery, comparing the time and the blade-changing speed of the blades which are suddenly feathered from 0 to 91 DEG with a normal value, judging whether the blade-changing battery has sufficient capacity or not to satisfy the emergent feathering requirement, and avoiding the situation that the battery capacity is insufficient in the running process of the wind generating set. Through the emergent feathering, the battery is tested by utilizing a discharging way of a blade-loaded battery, so that the test accuracy of the blade-changing battery capacity is ensured. The test of the blade-changing battery can be completed by in-situ test personnel of a wind field in a central control room, so that convenience and quickness can be realized, and a great amount of manpower and material resource can be saved.
Description
Technical field
The present invention relates to wind-powered electricity generation control field, particularly, relate to a kind of megawatt-level wind set pitch control battery testing method.
Background technology
MW class wind turbine group pitch-controlled system is generally furnished with three battery racks, comprises three Battery packs in each cupboard, and every Battery pack six saves, and is valve-regulated lead-acid battery.Single battery rated voltage 12V, every group of rated voltage 72V, in cabinet, three Battery packs connect by short-circuited terminal, each cupboard rated voltage configuration 216V.Pitch-controlled system electric battery is the very important composition of wind-powered electricity generation unit, it is the back-up source of whole system, the in the situation that of the disconnection of aerogenerator unit safe chain or grid cut-off, use battery to realize emergency feathering function, battery-operated pitch motor, blade is recovered to home, has guaranteed the safety and reliability of whole system.
Performance of lead-acid battery, except being subject to the impact of self character, is affected by other various factorss also, wherein mainly comprises: environment temperature, the Charge/Discharge Cycles etc. of use.Above-mentioned reason may cause the decline of the performance of lead accumulator, even lost efficacy, thereby safety and reliability to whole unit produces serious influence.
Due to the characteristic of lead accumulator itself, cannot reflect the actual state of battery completely by the mode of voltage of test lead accumulator, and existing pitch-controlled system is all to adopt this mode to carry out monitoring battery capacity, Shortcomings own.The mode of test lead accumulator internal resistance is more accurate, but need to use special internal resistance test device, single battery is tested one by one to time and effort consuming.
Summary of the invention
The object of this invention is to provide a kind of MW class wind turbine group and become oar battery testing method, wind energy turbine set maintainer can be made regular check on becoming oar battery Central Control Room is long-range, the capacity of guaranteeing battery can meet unit and carry out the operation of emergency feathering, guarantee accuracy and the safety of wind-powered electricity generation unit in the situation that of theft-resistant link chain disconnection or grid cut-off of test, overcome the deficiency of existing pitch-controlled system itself.
To achieve these goals, the present invention adopts following technical scheme:
A kind of MW class wind turbine group becomes oar battery testing method, comprises the steps:
(1) guaranteeing, under the prerequisite of unit safety, unit to be transformed into service mode from standby mode;
(2) manually control 3 blades of pitch-controlled system are driven to oar to 0 °;
(3) disconnect theft-resistant link chain, 3 blades of pitch-controlled system are utilized simultaneously and become oar battery feathering to 91 °, from the time of 0 ° of emergency feathering to 91 ° with become oar speed and compare with normal value, judge whether change oar battery has enough capacity to meet the needs of emergency feathering according to blade.
Further, in described step (2) before, newly add a change oar battery testing position in the primary control program of unit, in the time becoming the FALSE that oar battery testing position is acquiescence, the limit value that 3 blades of pitch-controlled system are driven oar is 50 ° of acquiescence; When becoming oar battery testing position TRUE, become oar battery testing function and enable, the limit value that 3 blades of pitch-controlled system are driven oar is modified to 0 °.
Further, in becoming oar battery testing position TRUE, the primary control program automatic activation high-speed main spindle brake of unit.
Further, in described step (1), unit safety comprises that unit non-fault, theft-resistant link chain closure, 10 minutes mean wind speeds are less than 6m/s, 3 blades of pitch-controlled system are all positioned at the situation of 89 °.
Further, in described step (2), 3 blades of pitch-controlled system are opened in the process of oar to 0 °, check the variation of 3 axle blade angles of pitch-controlled system, if any extremely, manually control 3 blade featherings to 89 ° of pitch-controlled system, get rid of after abnormal conditions, restart to become oar battery testing.
Further, in described step (3), utilize in the process of battery feathering to 91 ° at 3 blades of pitch-controlled system, situation about can not be completed if there is feathering, needs pitch-controlled system to check, changes if desired battery simultaneously, finishes to become oar battery testing.
Further, in described step (3), wind field SCADA system is preserved the angle value data and the change oar speed data that start 3 blades of 25 seconds from disconnecting theft-resistant link chain, and can draw the angle value data of blade and become the oar speed data figure of corresponding time; Time and change oar speed and normal value are compared, and judge that whether the gap between each axle blade is excessive, and whether have enough capacity meet the needs of emergency feathering, if normal, provide test report if becoming oar battery, if undesired, provide the warning of changing battery.
Adopt after technique scheme, the present invention at least has the following advantages:
1, to pitch-controlled system test period, the high speed shaft brake of unit, guarantees that main shaft can not rotate, and unit remains static, and has guaranteed the safety of unit.
2, by emergency feathering, utilize the mode of blade band live tank discharge to carry out battery testing, guaranteed that test becomes the accuracy of oar battery capacity.
3, tester can utilize the long-range realization of SCADA to become oar battery testing at wind energy turbine set Central Control Room, convenient and swift, has saved a large amount of manpower and materials.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that MW class wind turbine group of the present invention becomes oar battery testing method.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Refer to shown in Fig. 1, a kind of MW class wind turbine group of the present invention becomes oar battery testing method, is mainly included under the prerequisite that guarantees unit safety, and unit is transformed into service mode from standby mode; Manually control 3 blades of pitch-controlled system are driven to oar to 0 °, disconnect the theft-resistant link chain of unit, 3 blade utilizations of pitch-controlled system become oar powered battery feathering to 91 °, whether the speed by pitch-controlled system emergency feathering and time and normal value carry out recently judging battery capacity enough, avoid appearing at the situation that occurs battery capacity deficiency in unit running process.
Specifically, in wind energy turbine set Central Control Room SCADA system, separated an independent view and realized change oar battery automatically testing.In this view, can select test machine group, choose after certain unit, 91 ° of limit switch states of the blade angle of 10 minutes mean wind speeds of this unit, 3 blades, 3 blades, become oar battery testing position state, maintenance state, open oar state, full feathering state, disconnection theft-resistant link chain state and high-speed main spindle braking state and can show.
Be less than 6m/s at 10 minutes mean wind speeds, unit non-fault, now unit 3 axles change propeller angles are 89 °, the corresponding pilot lamp of [disconnection theft-resistant link chain] button is 0, in the situation of theft-resistant link chain closure, click [maintenance] button, [maintenance] pilot lamp becomes 1 from 0, and unit is changed for service mode by standby mode.Click [become oar battery testing position] button, [becoming oar battery testing position] pilot lamp becomes 1 from 0, becomes oar battery testing function and enables.
Click [driving oar] button, set pitch control system 3 axles utilize the main electricity of electrical network that change propeller angle is driven to oar to 0 ° from 89 °, if occur extremely opening in oar process, click [feathering] button, set pitch control system 3 axles utilize the main electricity of electrical network will become propeller angle feathering to 89 ° again.If set pitch control system 3 axles are normally driven oar to 0 °, again click [feathering] button, the corresponding pilot lamp of button becomes 0 from 1.Click [disconnection theft-resistant link chain] button, the corresponding pilot lamp of button becomes 1 from 0, and now theft-resistant link chain disconnects, and set pitch control system 3 axle utilizations become oar batteries by blade emergency feathering to 91 °, and 91 ° of limit switch states that each axle is corresponding become 1 from 0.
Operate situation about can not be completed if there is feathering, need pitch-controlled system to check, change if desired battery.
SCADA system preserves the 25 number of seconds certificates that start from disconnection theft-resistant link chain of this test unit automatically, select after this test unit, click [Query Result], the test data of this unit (angle value data and change oar speed data) can be read out, click [drawing] button, can draw the speed of 3 axle featherings of pitch-controlled system and the figure of deadline, by comparing with normal feathering speed and deadline, and judge that whether the gap between each axle is excessive, provide test result, judge that whether battery is normal, as undesired, provide the warning of changing battery.
Again click [disconnection theft-resistant link chain] button, [disconnection theft-resistant link chain] pilot lamp becomes 0 from 1, and theft-resistant link chain is again closed.Again click [becoming oar battery testing position] button, [becoming oar battery testing position] pilot lamp becomes 0, cancellation change oar battery testing function from 1.Again click [maintenance] button, [maintenance] pilot lamp becomes 0 from 1, and unit maintenance pattern transfers standby mode to.Click [reset] button, the failure reset that disconnection theft-resistant link chain is reported falls, and wind generating set pitch control system 3 axles come back to 89 °, so far become oar battery testing process and finish.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (7)
1. MW class wind turbine group becomes an oar battery testing method, it is characterized in that, comprises the steps:
(1) guaranteeing, under the prerequisite of unit safety, unit to be transformed into service mode from standby mode;
(2) manually control 3 blades of pitch-controlled system are driven to oar to 0 °;
(3) disconnect theft-resistant link chain, 3 blades of pitch-controlled system are utilized simultaneously and become oar battery feathering to 91 °, from the time of 0 ° of emergency feathering to 91 ° with become oar speed and compare with normal value, judge whether change oar battery has enough capacity to meet the needs of emergency feathering according to blade.
2. MW class wind turbine group according to claim 1 becomes oar battery testing method, it is characterized in that, in described step (2) before, in the primary control program of unit, newly add a change oar battery testing position, in the time becoming the FALSE that oar battery testing position is acquiescence, the limit value that 3 blades of pitch-controlled system are driven oar is 50 ° of acquiescence; When becoming oar battery testing position TRUE, become oar battery testing function and enable, the limit value that 3 blades of pitch-controlled system are driven oar is modified to 0 °.
3. MW class wind turbine group according to claim 2 becomes oar battery testing method, it is characterized in that, and in becoming oar battery testing position TRUE, the primary control program automatic activation high-speed main spindle brake of unit.
4. become oar battery testing method according to the MW class wind turbine group described in claim 1,2 or 3, it is characterized in that, in described step (1), unit safety comprises that unit non-fault, theft-resistant link chain closure, 10 minutes mean wind speeds are less than 6m/s, 3 blades of pitch-controlled system are all positioned at the situation of 89 °.
5. MW class wind turbine group according to claim 4 becomes oar battery testing method, it is characterized in that, in described step (2), 3 blades of pitch-controlled system are opened in the process of oar to 0 °, check the variation of 3 axle blade angles of pitch-controlled system, if any extremely, manually control 3 blade featherings to 89 ° of pitch-controlled system, get rid of after abnormal conditions, restart to become oar battery testing.
6. MW class wind turbine group according to claim 4 becomes oar battery testing method, it is characterized in that, in described step (3), utilize in the process of battery feathering to 91 ° at 3 blades of pitch-controlled system simultaneously, situation about can not be completed if there is feathering, need pitch-controlled system to check, change if desired battery, finish to become oar battery testing.
7. MW class wind turbine group according to claim 4 becomes oar battery testing method, it is characterized in that, in described step (3), wind field SCADA system is preserved the angle value data and the change oar speed data that start 3 blades of 25 seconds from disconnecting theft-resistant link chain, and draws the angle value data of blade and become the oar speed data figure of corresponding time; Time and change oar speed and normal value are compared, and judge that whether the gap between each axle blade is excessive, and whether have enough capacity meet the needs of emergency feathering, if normal, provide test report if becoming oar battery, if undesired, provide the warning of changing battery.
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| CN201210172047.7A CN102680906B (en) | 2012-05-29 | 2012-05-29 | Method for testing blade-changing battery of megawatt wind generating set |
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| CN201210172047.7A CN102680906B (en) | 2012-05-29 | 2012-05-29 | Method for testing blade-changing battery of megawatt wind generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842039A (en) * | 2016-12-24 | 2017-06-13 | 大连尚能科技发展有限公司 | A kind of wind generating set pitch control battery detecting cycle methods |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103076570B (en) * | 2013-01-15 | 2016-05-04 | 国电联合动力技术有限公司 | A kind of wind-powered electricity generation set pitch control back-up source automatic test approach and device |
| CN103454106B (en) * | 2013-08-29 | 2016-06-15 | 国家电网公司 | The static test of a kind of paddle change system of wind turbines executing agency |
| CN103472406A (en) * | 2013-09-13 | 2013-12-25 | 国电联合动力技术有限公司 | Wind turbine generator unit pitch system standby power supply online automatic detection method and device |
| CN104765004A (en) * | 2015-03-23 | 2015-07-08 | 北京天诚同创电气有限公司 | Detection method and system for variable-pitch battery of wind generating set |
| CN110531275B (en) * | 2019-08-11 | 2022-07-22 | 埃斯倍风电科技(青岛)有限公司 | Backup battery testing method of variable pitch system |
| CN110470998A (en) * | 2019-08-11 | 2019-11-19 | 埃斯倍风电科技(青岛)有限公司 | A kind of backup battery health status test method of pitch-controlled system |
| CN112943532B (en) * | 2021-03-04 | 2023-12-19 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Paddle operation interlocking method and device for variable pitch system of wind generating set |
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| CN201326512Y (en) * | 2008-12-24 | 2009-10-14 | 华锐风电科技有限公司 | Control device for pitch system of wind turbine |
| DE102009025819A1 (en) * | 2009-05-17 | 2010-11-25 | Ssb Wind Systems Gmbh & Co. Kg | Method for checking an electrical energy store |
| CN102411367A (en) * | 2011-11-16 | 2012-04-11 | 许继集团有限公司 | Master control test system and method for large-sized wind generating set |
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| JP5203270B2 (en) * | 2009-03-26 | 2013-06-05 | 株式会社Ｎｔｔファシリティーズ | Secondary battery capacity test system and secondary battery capacity test method |
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| CN201326512Y (en) * | 2008-12-24 | 2009-10-14 | 华锐风电科技有限公司 | Control device for pitch system of wind turbine |
| DE102009025819A1 (en) * | 2009-05-17 | 2010-11-25 | Ssb Wind Systems Gmbh & Co. Kg | Method for checking an electrical energy store |
| CN102411367A (en) * | 2011-11-16 | 2012-04-11 | 许继集团有限公司 | Master control test system and method for large-sized wind generating set |
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| CN106842039A (en) * | 2016-12-24 | 2017-06-13 | 大连尚能科技发展有限公司 | A kind of wind generating set pitch control battery detecting cycle methods |
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