CN105298953A - Control method for relieving blockage of wind turbine generator system hydraulic station - Google Patents
Control method for relieving blockage of wind turbine generator system hydraulic station Download PDFInfo
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- CN105298953A CN105298953A CN201510758559.5A CN201510758559A CN105298953A CN 105298953 A CN105298953 A CN 105298953A CN 201510758559 A CN201510758559 A CN 201510758559A CN 105298953 A CN105298953 A CN 105298953A
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Abstract
The invention discloses a control method for relieving blockage of a wind turbine generator system hydraulic station. Firstly, a hydraulic station pressure blockage relieving function starting value and a pressure rising speed setting value are set; when the hydraulic station pressure is lower than the blockage relieving function starting value and the pressure rising speed is smaller than the setting value, the hydraulic station pressure blockage relieving function is started; the hydraulic station pressure blockage relieving function is started to set frequency for a hydraulic station oil pump, and the oil pump is started and stopped continuously; after continuous starting and stopping of the oil pump, the pressure of the hydraulic station recovers to be normal, and the blockage relieving mode is quitted; during large wind, the wind turbine generator system hydraulic station has slight or medium foreign object blockage, machine stop and loss of the generation amount are not caused, and a worker does not need to go onto a fan to carry out repair. Compared with a traditional hydraulic station control strategy, the reliability of a wind turbine generator system is greatly improved, the labor cost is reduced, the utilization rate of power generation equipment is improved, and loss of the generation amount is reduced.
Description
Technical field
The present invention relates to wind generating technology, especially a kind of in wind power generating set generating, by slowing down hydraulic station jam controlling method, reducing wind power generating set and shutting down, improving unit utilization ratio, reducing power generation loss.
Background technique
Along with the environmental pollution that traditional fossil energy brings, original higher in electrical network ratio of green energy resource installed capacity of wind-driven power.The control strategy must optimized according to the characteristics design of domestic equipment, could improve unit utilization ratio, reduces unit dead time, increases generated energy, reduces traditional energy and uses.
Traditional hydraulic station control strategy: lower than oil pump in hydraulic stations initiation value, namely start oil pump, pressure is greater than oil pump stop value, stops oil pump.As jam appears in hydraulic station, pressure durations is low, lower than shutdown value, stopping oil pump, for preventing oil pump from damaging, stopping suppressing.Traditional control strategy, for the unit that hydraulic station jam is many, often can cause shutdown, lose more generated energy.
Hydraulic station jam, i.e. the blocking that occurs due to the deposition of impurity of the oil circuit of hydraulic station or valve, causes hydraulic station can not provide reliable working pressure to each actuator.
Fig. 1 and Fig. 2 is traditional hydraulic station control strategy, for the unit of hydraulic station without jam.Traditional hydraulic station control strategy: once have foreign matter jam oil circuit or valve; pressure cannot reach setting value in set time; fan parking; traditional treatment method; wash-out valve or replacing valve; may several days be shut down during Short Item, if during strong wind frequent shutdown, the loss of larger generated energy will be caused to wind field.
Another is 200920214117.4 in China Patent No., discloses a kind of brake hydraulic control system for wind power generating set, comprise hydraulic station and with the joining driftage brake control system of described hydraulic station and main shaft brake control system; Described hydraulic station comprises a fuel tank, an electric-motor pump group, an oil inlet and oil return filter, certain pressurized overflow valve and an accumulator; Described driftage brake control system comprises a driftage brake oil-feed stop valve, a series flow control valve, a return filter, two releasing driftage brake Controlling solenoid valve and for setting the relief valve of brake pretightening force.Described main shaft brake control system comprises an oil-feed reduction valve, a main shaft brake Controlling solenoid valve, removes main shaft brake Controlling solenoid valve and a throttle valve.The hydraulic control system of above-mentioned patent is that wind power generating set provides driftage brake control and main shaft brake controls; achieve the control of the Stress control of hydraulic system itself, liquid level and liquid temperature simultaneously; but when the oil-way system of hydraulic station is if there is jam; same blower fan also needs maintenance down, causes larger generated energy loss to wind field.
Summary of the invention
In order to overcome the defect of above-mentioned prior art; the invention provides one and slow down wind power generating set hydraulic station jam controlling method; its objective is the hydraulic station control strategy by improving; slow down hydraulic station jam; during strong wind, reduce wind power generating set shut down, when little wind, then shut down the impurity in process hydraulic station; improve Utilization ratio, reduce wind field power generation loss.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Slow down a controlling method for wind power generating set hydraulic station jam, to there being hydraulic station jam, opening and slowing down hydraulic station jam function, it is characterized in that, described in slow down hydraulic station jam and comprise the steps:
(1) when hydraulic station pressure is lower than slowing down jam function on value (parameter can be established), rate of pressure rise is less than setting value (parameter can be established) simultaneously, starts hydraulic station and slows down jam function;
(2) with setpoint frequency and the continuous start and stop oil pump of set point number;
(3) hydraulic station pressure recover is to normal value (parameter can be established), exits and slows down jam function; If pressure is lower than shutdown setting value, rate of pressure rise is less than setting value simultaneously, and exceed startup hydraulic station and slow down the jam function overtime protection time (parameter can be established), exit and slow down jam pattern, wind power generating set is shut down.
Described hydraulic station pressure relieving jam function on value is set to 120 handkerchiefs, and described rate of pressure rise setting value 10 handkerchiefs/second, normal value is set to 160 handkerchiefs, shuts down setting value and is set to 80 handkerchiefs, starts hydraulic station and slows down the jam function overtime protection time and be set to 25 seconds.Wherein, hydraulic station pressure relieving jam function on value, rate of pressure rise setting value, set time 1 can be able to be established according to respective hydraulic station and pump characteristics parameter.
Described oil pump in hydraulic stations with setpoint frequency 1Hz, start and stop oil pump 20 times.Oil pump in hydraulic stations stop frequency can not be too high, and the characteristic according to hydraulic station sets, and continues number of times and be as the criterion with device characteristics.Start-stop time is too much and frequency is too high, easily causes system tired, must consider as one sees fit.Rapid starting/stopping pump, with frequent flowing and the static shock of pressure change jam thing brought of oil, washes away jam thing, plays and slow down the effect of hydraulic station jam.
The present invention has the following advantages: during strong wind; there is slight or moderate foreign matter jam in wind power generating set hydraulic station, can not cause shutdown loss generated energy, with frequent flowing and the static shock of pressure change jam thing brought of oil; jam thing is washed away, plays and slow down the effect of hydraulic station jam.Do not need staff to go maintenance process on blower fan, compare conventional hydraulic station control strategy, greatly improve wind power generating set reliability, save human cost, improve power generating equipment utilization ratio, reduce generated energy loss.
Accompanying drawing explanation
Fig. 1 is traditional hydraulic station control strategy flow chart;
Fig. 2 is traditional hydraulic station on off control;
Fig. 3 of the present inventionly slows down hydraulic station jam controlling method flow chart;
Fig. 4 is the hydraulic station on off control slowing down hydraulic station jam function of the present invention.
Embodiment
Under so that the present invention is described further by reference to the accompanying drawings:
Embodiment 1
Slow down a controlling method for wind power generating set hydraulic station jam, to there being hydraulic station jam, and the unit that the short time cannot keep in repair, open and slow down hydraulic station jam function, comprise the steps:
(1) when hydraulic station pressure is lower than slowing down jam function on value (parameter can be established), rate of pressure rise is less than setting value (parameter can be established) simultaneously, starts hydraulic station and slows down jam function;
(2) with setpoint frequency and the continuous start and stop oil pump of set point number;
(3) hydraulic station pressure recover is to normal value, exits and slows down jam function; If pressure is lower than shutdown setting value, rate of pressure rise is less than setting value simultaneously, and exceed startup hydraulic station and slow down the jam function overtime protection time (parameter can be established), exit and slow down jam pattern, wind power generating set is shut down.
Described hydraulic station pressure relieving jam function on value is set to 120 handkerchiefs, described rate of pressure rise setting value 10 handkerchiefs/second, shuts down setting value and is set to 80 handkerchiefs, starts hydraulic station and slows down the jam function overtime protection time and be set to 25 seconds.Wherein, hydraulic station pressure relieving jam function on value, rate of pressure rise setting value, startup hydraulic station slow down the jam function overtime protection time and can be able to establish according to respective hydraulic station and pump characteristics parameter.
Described oil pump in hydraulic stations with setpoint frequency 1Hz, start and stop oil pump 20 times.Oil pump in hydraulic stations stop frequency can not be too high, and the characteristic according to hydraulic station sets, and continues number of times and be as the criterion with device characteristics.Start-stop time is too much and frequency is too high, easily causes system tired, must consider as one sees fit.Rapid starting/stopping pump, with frequent flowing and the static shock of pressure change jam thing brought of oil, washes away jam thing, plays and slow down the effect of hydraulic station jam.
3 is as follows to the controlling method example in the present invention with Fig. 4 by reference to the accompanying drawings:
Step 1: to the unit having hydraulic station jam, opens and slows down hydraulic station jam function;
Step 2: hydraulic station pressure is lower than slowing down jam function on value 120 handkerchief, and hydraulic recovery speed is lower than setting value 10 handkerchiefs/second simultaneously, enters and slows down the control of hydraulic station jam;
Step 3: hydraulic control station oil pump with setpoint frequency 1Hz, start and stop oil pump 20 times.
Step 4: hydraulic station pressure is more than or equal to 160 handkerchiefs, hydraulic station recovers normal work, exits and slows down the control of hydraulic station jam; If hydraulic station pressure is lower than shutdown setting value 80 handkerchief, and hydraulic recovery speed is less than setting value 10 handkerchiefs/second, more than 25 seconds, hydraulic station cannot recover normal work, and exit and slow down hydraulic station control, compressor emergency shutdown, illustrates that hydraulic station jam seriously must be overhauled.
Hydraulic station jam control strategy is slowed down as Fig. 4 in the present invention, hydraulic station pressure is lower than slowing down jam function on value 120 handkerchief, start and slow down jam function, with setpoint frequency 1Hz, 20 rapid starting/stopping oil pumps, be more than or equal to 160 handkerchiefs at pressure, exit and slow down jam function, design parameter needs the device characteristics according to unit set and optimize.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (3)
1. slow down a controlling method for wind power generating set hydraulic station jam, it is characterized in that, described in slow down hydraulic station jam function and comprise the steps:
(1) when hydraulic station pressure is lower than slowing down jam function on value, rate of pressure rise is less than setting value simultaneously, starts hydraulic station and slows down jam function;
(2) with setpoint frequency and the continuous start and stop oil pump of set point number, start timing simultaneously;
(3) hydraulic station pressure recover is to normal value, exits and slows down jam function; If pressure is lower than shutdown setting value, rate of pressure rise is less than setting value simultaneously, and timing time exceedes startup hydraulic station and slows down the jam function overtime protection time, and exit and slow down jam pattern, wind power generating set is shut down.
2. a kind of controlling method slowing down wind power generating set hydraulic station jam according to claim 1; it is characterized in that: described hydraulic station pressure relieving jam function on value is set to 120 handkerchiefs; described rate of pressure rise setting value 10 handkerchiefs/second; shut down setting value and be set to 80 handkerchiefs; start hydraulic station to slow down the jam function overtime protection time and be set to 25 seconds; wherein, hydraulic station pressure relieving jam function on value, rate of pressure rise setting value.
3. a kind of controlling method slowing down wind power generating set hydraulic station jam according to claim 1, is characterized in that: described oil pump in hydraulic stations with setpoint frequency 1Hz, start and stop oil pump 20 times.
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| CN201510758559.5A CN105298953B (en) | 2015-11-10 | 2015-11-10 | A kind of control method for slowing down wind power generating set hydraulic station jam |
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| CN201510758559.5A CN105298953B (en) | 2015-11-10 | 2015-11-10 | A kind of control method for slowing down wind power generating set hydraulic station jam |
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| CN105298953A true CN105298953A (en) | 2016-02-03 |
| CN105298953B CN105298953B (en) | 2017-10-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412898A (en) * | 2020-11-30 | 2021-02-26 | 东方电气自动控制工程有限公司 | Improved control method for slowing down blockage of hydraulic station of wind generating set |
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| US5183513A (en) * | 1991-05-10 | 1993-02-02 | Applied Hydro Dynamics, Inc. | Method of cleaning internal surfaces utilizing cavitating fluid |
| CN201546897U (en) * | 2009-11-24 | 2010-08-11 | 新华威尔液压系统(上海)有限公司 | Hydraulic brake control system for wind driven generator group |
| CN101884988A (en) * | 2010-05-21 | 2010-11-17 | 云南大红山管道有限公司 | Method for treating slurry pipeline blockage |
| CN202274270U (en) * | 2011-08-19 | 2012-06-13 | 华锐风电科技(集团)股份有限公司 | Bearing concentration lubricating system for large-scale wind turbines |
| CN102574170A (en) * | 2009-09-28 | 2012-07-11 | 帕拉迪姆流动服务有限公司 | Improved blockage removal apparatus and method |
| CN204162088U (en) * | 2014-10-17 | 2015-02-18 | 金川集团股份有限公司 | A kind of storage tank discharging recoiling device |
| CN204510453U (en) * | 2014-12-08 | 2015-07-29 | 石景润 | A kind of prefabricated pumping plant without blocking self-cleaning function integral type |
-
2015
- 2015-11-10 CN CN201510758559.5A patent/CN105298953B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5183513A (en) * | 1991-05-10 | 1993-02-02 | Applied Hydro Dynamics, Inc. | Method of cleaning internal surfaces utilizing cavitating fluid |
| CN102574170A (en) * | 2009-09-28 | 2012-07-11 | 帕拉迪姆流动服务有限公司 | Improved blockage removal apparatus and method |
| CN201546897U (en) * | 2009-11-24 | 2010-08-11 | 新华威尔液压系统(上海)有限公司 | Hydraulic brake control system for wind driven generator group |
| CN101884988A (en) * | 2010-05-21 | 2010-11-17 | 云南大红山管道有限公司 | Method for treating slurry pipeline blockage |
| CN202274270U (en) * | 2011-08-19 | 2012-06-13 | 华锐风电科技(集团)股份有限公司 | Bearing concentration lubricating system for large-scale wind turbines |
| CN204162088U (en) * | 2014-10-17 | 2015-02-18 | 金川集团股份有限公司 | A kind of storage tank discharging recoiling device |
| CN204510453U (en) * | 2014-12-08 | 2015-07-29 | 石景润 | A kind of prefabricated pumping plant without blocking self-cleaning function integral type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412898A (en) * | 2020-11-30 | 2021-02-26 | 东方电气自动控制工程有限公司 | Improved control method for slowing down blockage of hydraulic station of wind generating set |
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Address after: 618000 No. 18, Third Section of Lushan South Road, Deyang City, Sichuan Province Patentee after: Dongfang Electric Automatic Control Engineering Co., Ltd. Address before: 618099 No. 18, Section 3, Lushan South Road, Deyang City, Sichuan Province Patentee before: Sichuan Orient Electric Automatic Control Engineering Co., Ltd. |
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