CN106093802A - A kind of detection method of wind power generating set exchange pitch-controlled system back-up source capacity - Google Patents
A kind of detection method of wind power generating set exchange pitch-controlled system back-up source capacity Download PDFInfo
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- CN106093802A CN106093802A CN201610387056.6A CN201610387056A CN106093802A CN 106093802 A CN106093802 A CN 106093802A CN 201610387056 A CN201610387056 A CN 201610387056A CN 106093802 A CN106093802 A CN 106093802A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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Abstract
The invention discloses the detection method of a kind of wind power generating set exchange pitch-controlled system back-up source capacity, step is as follows: enter volume test pattern；Speed and the change in location of current vane is made by master control order；The initial voltage value of current back-up source during record test；Test terminates, and records the minimum operational voltage value of current back-up source and testing time value；Calculate the energy value that back-up source provides and the energy consumption values driving motor；The ratio of the energy value energy consumption values driving motor provided with back-up source is as test result, and judges that current back-up source capacity is the most abnormal according to the size of test result.The present invention can remotely operate, when back-up source capacity is less than equipment normal operation range, back-up source module will be judged by wind power generating set electric-control system to be needed to change module, thus ensure that back-up source has enough capacity to meet the needs of emergency feathering, have that measurement is simple, test period is short, test the advantages such as convenient.
Description
Technical field
The present invention relates to wind-powered electricity generation field, particularly to a kind of wind power generating set exchange pitch-controlled system back-up source capacity
Detection method.
Background technology
The back-up source of exchange pitch-controlled system is that in pitch-controlled system, unique energy provides equipment, also after wind field electric network power-fail
It is to ensure that the essential condition of the exchange safe and reliable emergency propeller retraction of pitch-controlled system.Back-up source (super capacitor) capacity is along with equipment
Self deterioration, being affected by rough ambient environmental such as high/low temperature, humidity, salt fogs, after the work regular hour, back-up source is (super
Level electric capacity) capacity be unable to reach design at the beginning of and fan safe run essential condition, be likely to result in exchange pitch-controlled system
Emergency feathering failure, thus bring the heavy losses of property.
By periodically back-up source (super capacitor) capacity being carried out test-based examination, it is possible to avoid standby to a certain extent
Power supply (super capacitor) capacity drops to below safety value and also fails to accurately point out the generation of failure condition.Present stage needs pass through
Climb blower fan one by one, enter one by one by the super capacitor taken outward in the equipment three back-up source cabinets to pitch-controlled system manually
Row charge-discharge test, measures cumbersome, and the gap periods half a year every time tested was to 1 year, and the measurement interval cycle is too
Long.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of wind-force remote controlled, that measurement is simple, the cycle is short to send out
The detection method of group of motors exchange pitch-controlled system back-up source capacity.
The present invention solves the technical scheme of the problems referred to above: a kind of wind power generating set exchange pitch-controlled system back-up source holds
The detection method of amount, its step is as follows:
(1) wind power generating set electric-control system cuts off the external power source supply of pitch-controlled system, and remotely controls pitch-controlled system, makes change
Oar system enters the volume test pattern of back-up source, and records back-up source initial voltage value now；
(2) test starts, and controls driver corresponding to current test back-up source by master control order, and driver is issued by master control
Speed and position command drive motor so that the speed of current vane and change in location, blade generation speed and change in location
To consume the energy of back-up source, the module magnitude of voltage of back-up source begins to decline；
(3) after test a period of time, wind power generating set electric-control system sends test and terminates order, and pitch-controlled system terminates capacity and surveys
Die trial formula, records the minimum operational voltage value of current back-up source and testing time value；
(4) the minimum running voltage of back-up source that the back-up source initial voltage value that obtains according to step (1), step (3) obtain
The theoretical capacitance of value and back-up source calculates the energy value that back-up source provides；
(5) obtain driving the energy expenditure of motor by the voltage sensor of built-in drive, current transformer and testing time
Value；
(6) ratio of the energy value energy consumption values driving motor in step (4) provided with back-up source in step (3) is made
For test result；
(7) judge that test result whether less than 80%, the most then judges that current back-up source capacity is abnormal, if it is not, then judge
Current back-up source capacity is normal.
The detection method of wind power generating set the most according to claim 1 exchange pitch-controlled system back-up source capacity,
It is characterized in that: in described step (4), the energy value Q computing formula that back-up source provides is:
Q=1/2 × C × (U1 2-U2 2)
Wherein, C is the theoretical capacitance of back-up source, U1For back-up source initial voltage value, U2For the minimum work of back-up source
Magnitude of voltage.
The detection method of wind power generating set the most according to claim 2 exchange pitch-controlled system back-up source capacity,
It is characterized in that: in described step (5), drive energy consumption values Q of motor1Computing formula is:
Q1=UI*t
Wherein, U is for driving electric moter voltage value, and I is for driving motor current value, and t is testing time value.
The beneficial effects of the present invention is:
1, the ratio of the energy value that the energy consumption values driving motor is provided by the present invention with back-up source is as test result, logical
Cross and judge that test result, whether less than the 80% of normal capacity, judges that current back-up source capacity is the most abnormal, thus after ensureing
Stand-by power source has enough capacity, with the needs of satisfied exchange pitch-controlled system emergency feathering, have that measurement is simple, test period is short,
Test advantage easily.
2, the present invention can remotely operate, and just can not hold by the current back-up source of exact knowledge by other test equipment
Amount, when back-up source capacity is less than equipment normal operation range, wind power generating set electric-control system will send fault message, carry
Show the Maintenance and Repair equipment that needs, and back-up source module is judged, if need to change module, thus ensure back-up source
There are enough capacity.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
A kind of detection method of wind power generating set exchange pitch-controlled system back-up source capacity, its step is as follows:
(1) wind power generating set electric-control system cuts off the external power source supply of pitch-controlled system, and remotely controls pitch-controlled system, makes change
Oar system enters the volume test pattern of back-up source, and records back-up source initial voltage value U now1。
(2) test starts, and controls driver corresponding to current test back-up source by master control order, and driver presses master control
The speed issued and position command drive motor so that the speed of current vane and change in location, blade generation speed and position
Changing the energy by consuming back-up source, the module magnitude of voltage of back-up source begins to decline.
(3) after test a period of time, wind power generating set electric-control system sends test and terminates order, and pitch-controlled system terminates to hold
Amount test pattern, records minimum operational voltage value U of current back-up source2And testing time value t.
(4) the minimum work of back-up source that the back-up source initial voltage value that obtains according to step (1), step (3) obtain
The theoretical capacitance of magnitude of voltage and back-up source calculates the energy value that back-up source provides；
The energy value Q computing formula that back-up source provides is:
Q=1/2 × C × (U1 2-U2 2)
Wherein, C is the theoretical capacitance of back-up source, U1For back-up source initial voltage value, U2For the minimum work of back-up source
Magnitude of voltage.
(5) obtain driving the energy of motor by the voltage sensor of built-in drive, current transformer and testing time
Consumption figures；Drive energy consumption values Q of motor1Computing formula is:
Q1=UI*t
Wherein, U is for driving electric moter voltage value, and I is for driving motor current value, and t is testing time value.
(6) ratio of the energy value that the energy consumption values driving motor in step (4) is provided with back-up source in step (3)
Value is as test result.
(7) judge that test result whether less than 80%, the most then judges that current back-up source capacity is abnormal, if it is not, then
Judge that current back-up source capacity is normal.
As a example by certain model blower fan, back-up source uses the standby electricity of super capacitor, and system uses 5 modules, each module 36
The module of individual 2.7V monomer composition 90V/9.6F, the back-up source 450V/1.92F of 5 such module concatenation composition systems, i.e.
U1It is 1.92F for 450V, C.According to minimum running voltage U of driver bus2For 150V, calculate standby electricity by formula (1)
The available energy in source is 172800 joules.
(1)
Wherein U1 is back-up source initial voltage value, U1 be 450V, U2 be the minimum operational voltage value of back-up source, U2 is 150V, C
For the theoretical capacitance of back-up source, value is 1.92F.
The blower fan model provided according to Bladed is analyzed calculating, the blower fan energy that emergency shutdown needs when rated wind speed
Amount maximum, 63% when about rated load is shut down, the energy that therefore emergency shutdown needs is: W=T* ω * t=38*0.63*
(1910/9.55) * (90/6+3)=86400 joule, it is seen that this back-up source can meet the requirement shutting down 2 times.
Determine that module parameter is: rated voltage: 90V according to above calculating；Ceiling voltage: 97.2V；Continuous output current
20A；Operating temperature :-40 DEG C-65 DEG C；Storage temperature :-40 DEG C-70 DEG C；Module overall dimensions (L*W*H): 305mm*115mm*
270mm, weight :≤8Kg.Parameter according to module is learnt, whole backup power system is made up of 5 modules, each module electricity
Pressure for 90V, is cascaded as 450V, and capacity is 9.6F, then the rated capacity of each module is 1.92F.According to module
Characteristic, if the energy efficiency values of module is less than the 80% of rated capacity, then judges that this module lost efficacy.
Insert module capability value 1.92F in the drive, after wind power generating set completes emergency shutdown, master control cut off and hand over
After rheology oar system power supply, can test a back-up source cabinet, test data are as follows:
Claims (3)
1. a detection method for wind power generating set exchange pitch-controlled system back-up source capacity, its step is as follows:
(1) wind power generating set electric-control system cuts off the external power source supply of pitch-controlled system, and remotely controls pitch-controlled system, makes change
Oar system enters the volume test pattern of back-up source, and records back-up source initial voltage value now；
(2) test starts, and controls driver corresponding to current test back-up source by master control order, and driver is issued by master control
Speed and position command drive motor so that the speed of current vane and change in location, blade generation speed and change in location
To consume the energy of back-up source, the module magnitude of voltage of back-up source begins to decline；
(3) after test a period of time, wind power generating set electric-control system sends test and terminates order, and pitch-controlled system terminates capacity and surveys
Die trial formula, records the minimum operational voltage value of current back-up source and testing time value；
(4) the minimum running voltage of back-up source that the back-up source initial voltage value that obtains according to step (1), step (3) obtain
The theoretical capacitance of value and back-up source calculates the energy value that back-up source provides；
(5) obtain driving the energy expenditure of motor by the voltage sensor of built-in drive, current transformer and testing time
Value；
(6) ratio of the energy value energy consumption values driving motor in step (4) provided with back-up source in step (3) is made
For test result；
(7) judge that test result whether less than 80%, the most then judges that current back-up source capacity is abnormal, if it is not, then judge
Current back-up source capacity is normal.
The detection method of wind power generating set the most according to claim 1 exchange pitch-controlled system back-up source capacity, it is special
Levying and be: in described step (4), the energy value Q computing formula that back-up source provides is:
Q=1/2 × C × (U1 2-U2 2)
Wherein, C is the theoretical capacitance of back-up source, U1For back-up source initial voltage value, U2For back-up source minimum work electricity
Pressure value.
The detection method of wind power generating set the most according to claim 2 exchange pitch-controlled system back-up source capacity, it is special
Levy and be: in described step (5), drive energy consumption values Q of motor1Computing formula is:
Q1=UI*t
Wherein, U is for driving electric moter voltage value, and I is for driving motor current value, and t is testing time value.
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Cited By (7)
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| CN108445407A (en) * | 2018-03-19 | 2018-08-24 | 浙江国自机器人技术有限公司 | A kind of detection method of quantity of electricity, device and computer readable storage medium |
| CN110531275A (en) * | 2019-08-11 | 2019-12-03 | 埃斯倍风电科技(青岛)有限公司 | A kind of backup battery test method of pitch-controlled system |
| CN111156131A (en) * | 2020-01-06 | 2020-05-15 | 上海电气风电集团股份有限公司 | Intelligent control system and method for backup power supply of fan pitch control system |
| CN111241708A (en) * | 2020-02-13 | 2020-06-05 | 许昌许继风电科技有限公司 | Calculation method and model selection method of super capacitor for large fan variable pitch system |
| CN111997843A (en) * | 2020-08-26 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Backup power supply life health monitoring method and monitoring system |
| CN112283027A (en) * | 2020-11-19 | 2021-01-29 | 上海电气风电集团股份有限公司 | Model selection method and system, control method and system and computer readable storage medium for backup power supply of wind turbine generator pitch system |
| CN114880529A (en) * | 2022-04-27 | 2022-08-09 | 上海兰钧新能源科技有限公司 | Module capacity measuring system and module capacity measuring method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108445407A (en) * | 2018-03-19 | 2018-08-24 | 浙江国自机器人技术有限公司 | A kind of detection method of quantity of electricity, device and computer readable storage medium |
| CN110531275A (en) * | 2019-08-11 | 2019-12-03 | 埃斯倍风电科技(青岛)有限公司 | A kind of backup battery test method of pitch-controlled system |
| CN111156131A (en) * | 2020-01-06 | 2020-05-15 | 上海电气风电集团股份有限公司 | Intelligent control system and method for backup power supply of fan pitch control system |
| CN111156131B (en) * | 2020-01-06 | 2021-06-25 | 上海电气风电集团股份有限公司 | Intelligent control system and method for backup power supply of fan pitch control system |
| CN111241708A (en) * | 2020-02-13 | 2020-06-05 | 许昌许继风电科技有限公司 | Calculation method and model selection method of super capacitor for large fan variable pitch system |
| CN111241708B (en) * | 2020-02-13 | 2023-06-06 | 许昌许继风电科技有限公司 | Calculation method and model selection method of super capacitor for large fan variable pitch system |
| CN111997843A (en) * | 2020-08-26 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Backup power supply life health monitoring method and monitoring system |
| CN111997843B (en) * | 2020-08-26 | 2021-10-29 | 中车青岛四方车辆研究所有限公司 | Backup power supply life health monitoring method and monitoring system |
| CN112283027A (en) * | 2020-11-19 | 2021-01-29 | 上海电气风电集团股份有限公司 | Model selection method and system, control method and system and computer readable storage medium for backup power supply of wind turbine generator pitch system |
| CN112283027B (en) * | 2020-11-19 | 2022-05-31 | 上海电气风电集团股份有限公司 | Model selection method and system, control method and system and computer readable storage medium for backup power supply of wind turbine generator pitch system |
| CN114880529A (en) * | 2022-04-27 | 2022-08-09 | 上海兰钧新能源科技有限公司 | Module capacity measuring system and module capacity measuring method |
| CN114880529B (en) * | 2022-04-27 | 2024-06-28 | 上海兰钧新能源科技有限公司 | Module capacity measurement system and module capacity measurement method |
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