Background technique
Due to the outdoor high dry running of wind power generating set, and anemoclinograph is outside set engine room cover, and its running environment is very complicated: vibration, dust, be exposed to the sun, freezing, the various extreme condition such as drench with rain; Installation unit that is marine, beach wind field also will stand salt spray corrosion year in year out, and the out of order probability of anemoscope wind vane is relatively high.Under normal circumstances, the design of Wind turbines adopts the design proposal of two wind speed, a wind direction.This design mainly solves the halting problem being caused unit by anemoscope, but once wind vane breaks down, blower fan will hard stop, cannot start, reduced unit availability and economic well-being of workers and staff before fault is not yet got rid of.
Unit anemoclinograph lost efficacy and wind speed higher than unit cut-out wind speed time, unit cannot select resting position, causes unit risk factor higher.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art; emergency control method when providing a kind of wind power generating set anemoclinograph to lose efficacy; the method can reduce dead time; can according to field condition reasonable arrangement fault handling time; improve blower fan availability; increase unit output, economic benefit and the safety coefficient of blower fan.
For achieving the above object, the present invention adopts following technical proposals:
Emergency control method when a kind of wind power generating set anemoclinograph lost efficacy, step is as follows:
1) in wind field, all units, centered by oneself, form a little network by nearest three units of wind field SCADA system and its geographical position by wind field SCADA system;
2) when unit normally runs, the wind speed and direction signal collected is fed back to central control unit by SCADA system by unit, and central control unit shows the various real time information that unit comprises wind speed and direction;
3) when unit wind speed/to instrument report fault, first to central control unit report, central control unit carries out heterochromatic display in remarkable position, sends warning to monitor staff;
4) wind speed/flow direction vane report therefore unit starting emergency control procedure, wind speed/to information is read in controller of fan application from SCADA system, if application is unsuccessful in the stipulated time, then shuts down; If application is passed through, unit sends instruction according to the data of reading in from SCADA system to unit, maintains the operation of unit.After attendant safeguards blower fan, failture evacuation, unit reenters normal operating condition.
The present invention does not need to do any change to the hardware of existing unit control system and wind field SCADA system, only needs to make corresponding optimization to unit allocation software and wind field SCADA system communications protocol.
The present invention is applied to that wind speed is higher, accessory temporary shortages, unit maintenance personnel can make unit keep running when can not fix a breakdown in time at the scene etc., reduces fan parking rate, increases economic efficiency; Wind power generating set can be made by yaw system adjustment unit to wind state, reduction unit risk factor when storm wind arrives.
Under normal circumstances, wind field is a more spacious area.Within the scope of adjacent 5 Fans, wind speed, wind direction information are substantially identical.Emergency flight control scheme adopts the relevant information of adjacent unit to control temporarily when unit cannot obtain wind speed and direction information, maintain the operation of unit before attendant fixes a breakdown.Along with the mass production safeguarding inconvenient Large Scale Oceanic Wind Power Generation unit, the superiority that this emergency flight control scheme is used in wind power generating set is more outstanding by what show.
As for platform unit every in the present invention and other 3 unit network consistings, mainly consider Redundancy Design, with farthest reduce unit because wind speed/to report therefore the probability of shutting down.In practical solution, after controller of fan enters emergency control procedure, only need two groups of wind speed and direction information, at unit because wind speed/to fault to SCADA system application is after other unit corresponding datas, first SCADA system differentiates the significance bit of other three unit corresponding informations, confirm to have be no less than 2 unit corresponding informations effectively after, application is passed through, SCADA system according to priority be followed successively by the first unit, the second unit, the 3rd unit select progressively data and send to center unit.
In addition, if unit flow direction vane in storm wind situation breaks down, unit can by during the wind direction information determination compressor emergency shutdown of other units to wind direction, reduce the risk factor of blower fan.This emergency flight control scheme also can add other similar variablees, to improve the utilization ratio of blower fan, does not repeat at this.
The invention has the beneficial effects as follows, the present invention, through in the checking of part system test, by simulation wind speed/to fault, confirms that this emergency flight control scheme is practical, can reduce dead time.According to field condition reasonable arrangement fault handling time, can improve blower fan availability, increase the unit output of blower fan, economic benefit is obvious.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As Fig. 1, in wind field, all units are centered by oneself, form a little network by wind field SCADA system and three units nearest with its position.When unit normally runs, the wind speed and direction signal collected is fed back to central control unit by SCADA system by unit, and central control unit shows in real time to the various real time information that unit comprises wind speed and direction.If unit 1 wind speed/to the event of instrument report, first to central control unit report, central control unit carries out heterochromatic display in remarkable position, sends warning to monitor staff; Meanwhile, corresponding function position 1 in air-blower control program, starts emergency control procedure, and wind speed/to information is read in controller of fan application from SCADA system, if apply for unsuccessful, then shuts down; If application is passed through, unit sends instruction according to the data of reading in from SCADA system to unit, maintains the operation of unit, until attendant safeguards blower fan, by failture evacuation.
As for every platform unit and other 3 unit network consistings, mainly consider Redundancy Design, with farthest reduce unit because wind speed/to report therefore the probability of shutting down.In practical solution, after controller of fan enters emergency control procedure, only need two groups of wind speed and direction information, at unit because wind speed/to fault to SCADA system application is after other unit corresponding datas, first SCADA system differentiates the significance bit of unit 2,3,4 corresponding information, confirm to have be no less than 2 unit corresponding informations effectively after, application is passed through, SCADA system according to priority be followed successively by unit 2, unit 3, unit 4 select progressively data and send to unit 1.Unit wind speed/to control flow during fault as shown in Figure 2.
In addition, if unit flow direction vane in storm wind situation breaks down, unit can by during the wind direction information determination compressor emergency shutdown of other units to wind direction, reduce the risk factor of blower fan.
This emergency flight control scheme also can add other similar variablees, to improve the utilization ratio of blower fan, does not repeat at this.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technological scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.