CN105896541B - A kind of wind-powered electricity generation collects station m-Acetyl chlorophosphonazo control method - Google Patents
A kind of wind-powered electricity generation collects station m-Acetyl chlorophosphonazo control method Download PDFInfo
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- CN105896541B CN105896541B CN201610464277.9A CN201610464277A CN105896541B CN 105896541 B CN105896541 B CN 105896541B CN 201610464277 A CN201610464277 A CN 201610464277A CN 105896541 B CN105896541 B CN 105896541B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a kind of wind-powered electricity generation to collect station m-Acetyl chlorophosphonazo control method, including：M-Acetyl chlorophosphonazo signal extraction module：Collect station to wind-powered electricity generation and carry out spectrum analysis to the contact line current of major network, calculate the frequency fc of amplitude maximum m-Acetyl chlorophosphonazo component, extract the m-Acetyl chlorophosphonazo signal in contact line voltage and each wind-powered electricity generation field current；Judge originally to collect the wind power plant that station allows to cut according to interconnection m-Acetyl chlorophosphonazo electric current, m-Acetyl chlorophosphonazo voltage and wind power plant m-Acetyl chlorophosphonazo electric current；The absolute value of the difference of fc and one group of characteristic frequency is calculated, and obtains minimum value df thereinmin；Minute wheel classification excision module：According to interconnection m-Acetyl chlorophosphonazo electric current, dfminEach wind power plant for allowing to cut is cut off with the classification of wind power plant m-Acetyl chlorophosphonazo electric current minute wheel.The present invention can monitor that wind-powered electricity generation collects station and major network interconnection and each wind power plant simultaneously, larger m-Acetyl chlorophosphonazo electric current in on-line real time monitoring power network be present, and online this wind-powered electricity generation of real-time judge, which collects in station, whether there is m-Acetyl chlorophosphonazo occurring source.
Description
Technical field
The present invention relates to Electric control field, more particularly to a kind of wind-powered electricity generation to collect station m-Acetyl chlorophosphonazo control method.
Background technology
With economic rapid growth, high energy-consuming industry rapidly develops, and the requirement for renewable new energy is more and more urgent.
Recently as the increasingly mature of wind-powered electricity generation and photovoltaic power generation technology, its cost of electricity-generating is also gradually reducing, wind-powered electricity generation and the big rule of photovoltaic
Mould commercial operation is possibly realized, and to the year two thousand twenty, China's non-fossil energy and fossil energy generator installation ratio are about 4:6, wind-powered electricity generation, too
Positive energy generator installation reaches 300,000,000 kilowatts or so, increases 1.8 hundred million kilowatts or so newly；China's wind energy and solar energy large-scale development area
Power network end is typically in, and network load is located at economically developed eastern region and middle part mostly, to make western electricity
The efficient remote conveying of energy energy is sent to the load center of the central and east, frequently with extra-high voltage large capacity transmission technology or installs serial compensation capacitance additional
Ultra-high/extra-high voltage ac transmission, this kind of power network is in wind-driven generator inverter, SVC, SVG, direct current transportation and serial compensation capacitance etc.
The m-Acetyl chlorophosphonazo electric current and voltage that frequency is not power network power frequency integer multiple frequency may be produced in the presence of many factors in power network,
And then causing neighbouring fired power generating unit that sub-synchronous oscillation occurs, the large-scale wind power that China has put into operation at present collects near station
Fired power generating unit multiple sub-synchronous oscillation phenomenon had occurred, seriously affect the safe and stable operation of power network and this area's thermoelectricity
The safety of unit.It is the off-line analysis based on PMU recorder datas after accident mostly to the analysis method of m-Acetyl chlorophosphonazo at present, does not reach
To the purpose of on line real time control, the torsional oscillation protection of generator can only be leaned on to act excision when sub-synchronous oscillation occurs for fired power generating unit
Generator, not excision cause the m-Acetyl chlorophosphonazo occurring source that sub-synchronous oscillation occurs, cause fault spread；It is or artificial by dispatcher
Cut-out wind power plant order to calm down vibration, manual control can cause to cut and response speed is slow.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of wind-powered electricity generation to solve problems of the prior art and collected between station
Harmonic Control Method.
To reach above-mentioned purpose, what the technical scheme of the embodiment of the present invention was realized in：A kind of wind-powered electricity generation collect station between it is humorous
Ripple control method, it is characterised in that methods described includes following module：
(1) m-Acetyl chlorophosphonazo signal extraction module：Collect station to wind-powered electricity generation and carry out spectrum analysis to the contact line current of major network, calculate
Go out the frequency fc of amplitude maximum m-Acetyl chlorophosphonazo component, and extract the m-Acetyl chlorophosphonazo signal in contact line voltage and each wind-powered electricity generation field current；
(2) wind power plant allows to cut judge module：According to interconnection m-Acetyl chlorophosphonazo electric current, m-Acetyl chlorophosphonazo voltage and wind power plant m-Acetyl chlorophosphonazo
Electric current judges originally to collect the wind power plant that station allows to cut；
(3) m-Acetyl chlorophosphonazo frequecy characteristic judge module：The absolute value of the difference of fc and one group of characteristic frequency is calculated, and obtains it
In minimum value dfmin；
(4) minute wheel classification excision module：According to interconnection m-Acetyl chlorophosphonazo electric current, dfminWith wind power plant m-Acetyl chlorophosphonazo electric current minute wheel point
Each permission wind cutting electric field of level excision.
Wind power plant allows to cut judge module Rule of judgment：
Condition one：The m-Acetyl chlorophosphonazo current component of interconnection amplitude maximum exceedes m-Acetyl chlorophosphonazo electric current threshold definite value；
Condition two：The absolute value of phase angle difference is less than a certain threshold between interconnection m-Acetyl chlorophosphonazo voltage and m-Acetyl chlorophosphonazo electric current；
Condition three：The amplitude of wind power plant m-Acetyl chlorophosphonazo electric current is more than a minimum threshold definite value for allowing to cut；
Condition four：The phase angle difference of wind power plant m-Acetyl chlorophosphonazo electric current and interconnection m-Acetyl chlorophosphonazo electric current is less than an angle that can be adjusted
Degree；
Meet that the wind power plant of four conditions of the above is judged as allowing to cut simultaneously.
M-Acetyl chlorophosphonazo frequecy characteristic judge module collects the shafting torsional oscillation mode frequency meter of fired power generating unit near station according to wind-powered electricity generation
One group of characteristic frequency is calculated, and calculates the absolute value of each characteristic frequency and fc difference in this group of characteristic frequency, is obtained therein
Minimum value dfmin。
Minute wheel classification excision module is according to interconnection m-Acetyl chlorophosphonazo electric current, dfminCut with the classification of wind power plant m-Acetyl chlorophosphonazo electric current minute wheel
Respectively allow the wind power plant cut：
The first round：Each wind power plant is judged, any wind power plant cuts off the wind power plant after meeting following condition：
Condition one：Humorous line current is more than first round action threshold value between interconnection,
Condition two：dfminAllow frequency departure threshold value less than the first round,
Condition three：The wind power plant is judged as allowing to cut in module (2),
Condition four：M-Acetyl chlorophosphonazo electric current is more than wind power plant m-Acetyl chlorophosphonazo electric current action threshold value,
It is delayed more than meeting after four conditions by the first round and cuts off the wind power plant；
Second wheel：There are two operating criterions, any criterion meets then to think that the wheel meets, is moved after the second wheel delay
Make, each criterion is as follows：
Criterion one has following two conditions：
Condition one：Humorous line current is more than the first element threshold value of the second wheel between interconnection,
Condition two：dfminFirst less than the second wheel allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Criterion two has following two conditions：
Condition one：Humorous line current is more than second action threshold value of the second wheel between interconnection,
Condition two：dfminSecond less than the second wheel allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Each wind power plant for allowing to cut is cut in classification after criterion one or criterion two meet, every grade of delay is identical, is the second wheel
Action delay, timer is reset after every grade of action, reclocking and can be acted if the second wheel operation condition is still met, until
Untill all wind power plants for allowing to cut are cut, every grade of action from the wind power plant for allowing to cut by m-Acetyl chlorophosphonazo electric current from big to small
Order is cut off, and the wind-powered electricity generation number cut off after every grade of action can be configured by definite value；
Third round：There are two operating criterions, any criterion meets then to think that the wheel meets, moved after third round is delayed
Make, each criterion is as follows：
Criterion one has following two conditions：
Condition one：Humorous line current is more than the first element threshold value of third round between interconnection,
Condition two：dfminFirst less than third round allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Criterion two has following two conditions：
Condition one：Humorous line current is more than second action threshold value of third round between interconnection,
Condition two：dfminSecond less than third round allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Criterion one or criterion two cut off all wind power plants for allowing to cut simultaneously after meeting after third round action delay.
Wind-powered electricity generation provided by the invention collects station m-Acetyl chlorophosphonazo control method, can monitor that wind-powered electricity generation collects station and major network interconnection simultaneously
And each wind power plant, can there are larger m-Acetyl chlorophosphonazo electric current, and this wind-powered electricity generation remittance of online real-time judge in on-line real time monitoring power network
Collection whether there is m-Acetyl chlorophosphonazo occurring source in station, collect if this wind-powered electricity generation if station has m-Acetyl chlorophosphonazo occurring source according to interconnection m-Acetyl chlorophosphonazo electricity
Stream, the frequecy characteristic of m-Acetyl chlorophosphonazo and wind power plant m-Acetyl chlorophosphonazo electric current, each wind power plant for allowing to cut is cut in minute wheel classification, until system is recovered
Normally.The present invention using minute wheel classification control method considered the size of m-Acetyl chlorophosphonazo electric current, m-Acetyl chlorophosphonazo power frequency with
The shafting of the degree of agreement of the modal frequency of shaft system of unit torsional oscillation and unit fatigue allows the factors such as time, when m-Acetyl chlorophosphonazo electric current very
Big or torsional vibration frequency feature with unit is very identical quickly to cut off m-Acetyl chlorophosphonazo when the very big hyposynchronization of amplitude may be caused to vibrate
Occurring source ensures the safety of unit, and when m-Acetyl chlorophosphonazo electric current is not less and high with the torsional vibration frequency feature degree of agreement of unit
When, oscillation source can be progressively cut off, avoids largely crossing wind cutting group of motors.
Brief description of the drawings
Fig. 1 is the module composition schematic diagram that wind-powered electricity generation of the embodiment of the present invention collects station m-Acetyl chlorophosphonazo control method；
Fig. 2 is that wind-powered electricity generation collects the schematic diagram that is connected with major network of standing；
Fig. 3 is that wind-powered electricity generation of the embodiment of the present invention collects station m-Acetyl chlorophosphonazo control method minute wheel classification wind cutting electric field logic chart.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further detailed explanation.
Embodiment 1
As shown in figure 1, wind-powered electricity generation, which collects station m-Acetyl chlorophosphonazo control method, includes following functional module：(1) m-Acetyl chlorophosphonazo signal extraction
Module；(2) wind power plant allows to cut judge module；(3) m-Acetyl chlorophosphonazo frequecy characteristic judge module；(4) minute wheel classification excision module.
First, interconnection m-Acetyl chlorophosphonazo signal extraction module collects station to wind-powered electricity generation to the contact line current progress frequency spectrum point of major network
Analysis, wind-powered electricity generation as shown in Figure 2 collect station assume certain power network unusual service condition under interconnection current spectrum analyze result be to deposit
In following several m-Acetyl chlorophosphonazo components：
M-Acetyl chlorophosphonazo component 1：Amplitude is 150A, frequency 37.18Hz
M-Acetyl chlorophosphonazo component 2：Amplitude is 10A, frequency 43.96Hz
M-Acetyl chlorophosphonazo component 3：Amplitude be 20A, frequency 23.58Hz
Then the amplitude of the m-Acetyl chlorophosphonazo current component of amplitude maximum is 150A, frequency 37.18Hz, i.e. fc=37.18Hz, with
Frequency Design bandpass filter is filtered to interconnection voltage and each wind-powered electricity generation field current centered on 37.18Hz, humorous between extracting
Ripple signal, and calculate the phase angle difference of each m-Acetyl chlorophosphonazo component and interconnection m-Acetyl chlorophosphonazo electric current, it is assumed that each of the 37.18Hz of extraction is humorous
Ripple situation is as follows：
Interconnection m-Acetyl chlorophosphonazo voltage：Amplitude is 5.2kV, and phase angle is 30 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 1：Amplitude is 55A, and phase angle is 10 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 2：Amplitude is 49A, and phase angle is 15 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 3：Amplitude is 45A, and phase angle is 20 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 4：Amplitude is 40A, and phase angle is 25 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 5：Amplitude is 35A, and phase angle is 28 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 6：Amplitude is 30A, and phase angle is 40 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 7：Amplitude is 53A, and phase angle is 170 °
Then wind power plant allows to cut whether judge module allows each wind power plant to cut into capable judgement, and Rule of judgment is：
Condition one：The m-Acetyl chlorophosphonazo current component of interconnection amplitude maximum exceedes m-Acetyl chlorophosphonazo electric current threshold definite value, it is assumed that humorous
Ripple electric current threshold definite value is 100A；
Condition two：The absolute value of phase angle difference is less than a certain threshold between interconnection m-Acetyl chlorophosphonazo voltage and m-Acetyl chlorophosphonazo electric current, false
If the threshold is 90 °；
Condition three：The amplitude of wind power plant m-Acetyl chlorophosphonazo electric current is more than a minimum threshold definite value for allowing to cut, it is assumed that this is minimum
Threshold definite value is 20A；
Condition four：The phase angle difference of wind power plant m-Acetyl chlorophosphonazo electric current and interconnection m-Acetyl chlorophosphonazo electric current is less than an angle that can be adjusted
Degree, it is assumed that the angle that can be adjusted is 90 °；
Meet that the wind power plant of four conditions of the above is judged as allowing to cut simultaneously.
Wind power plant 1 is judged in this example to wind power plant 6 to allow to cut.
3rd step：M-Acetyl chlorophosphonazo frequecy characteristic judge module collects the shafting torsional oscillation mode of fired power generating unit near station according to wind-powered electricity generation
Frequency calculates one group of characteristic frequency, the corresponding characteristic frequency of each modal frequency, this example fc<50Hz, thus modal frequency with
Corresponding characteristic frequency sum is power network rated frequency 50Hz, and calculates the absolute value of each characteristic frequency and fc difference, is asked
Go out minimum value dfmin.Assuming that nearby fired power generating unit has 3 shafting torsional oscillation mode frequencies：14.38Hz, 22.52Hz and 30.76Hz,
Then corresponding characteristic frequency is respectively：The difference of 35.62Hz, 27.48Hz, 19.24Hz, fc and characteristic frequency is：1.56Hz、
9.7Hz, 17.94Hz, minimum frequency difference dfmin=1.56Hz.
4th step：Minute wheel classification excision module is according to interconnection m-Acetyl chlorophosphonazo electric current, dfminWith wind power plant m-Acetyl chlorophosphonazo electric current point
Each wind power plant for allowing to cut is cut in wheel classification, and action logic is as shown in Figure 3.
It is as follows that if minute wheel classification excision module respectively takes turns definite value：
First round definite value：
The first round acts threshold value：Idz1=100A, a wheel allow frequency departure threshold value：Df1=2Hz, action delay
The T1=5 seconds
Each wind power plant m-Acetyl chlorophosphonazo electric current action threshold value is 50A, i.e. Iqc1~Iqc7=50A,
Second wheel definite value：
The first element threshold value of second wheel：Idz21=130A,
First permission frequency departure threshold value of the second wheel：Df21=1.5Hz,
Second action threshold value of the second wheel：Idz22=110A,
Second permission frequency departure threshold value of the second wheel：Df22=1.0Hz,
The action delay T2=3 seconds, every grade is cut 3 wind power plants,
Third round definite value：
The first element threshold value of third round：Idz31=150A,
First permission frequency departure threshold value of third round：Df31=1.0Hz,
Second action threshold value of third round：Idz32=130A,
Second permission frequency departure threshold value of third round：Df32=0.5Hz,
The action delay T3=1 seconds,
Then respectively action situation is as follows：
The first round：Humorous line current is 150A between interconnection>Idz1 (100A), and dfmin(1.56Hz)<Df1 (2Hz), meet
First round operation condition, each wind power plant is judged, each wind power plant situation is as follows：
Wind power plant 1 allows to cut and m-Acetyl chlorophosphonazo electric current=55A>Iqc (50A), cut off through delay in 5 seconds；
Wind power plant 2 allows to cut but m-Acetyl chlorophosphonazo electric current=49A<Iqc (50A), the first round does not cut；
Wind power plant 3 allows to cut but m-Acetyl chlorophosphonazo electric current=45A<Iqc (50A), the first round does not cut；
Wind power plant 4 allows to cut but m-Acetyl chlorophosphonazo electric current=40A<Iqc (50A), the first round does not cut；
Wind power plant 5 allows to cut but m-Acetyl chlorophosphonazo electric current=35A<Iqc (50A), the first round does not cut；
Wind power plant 6 allows to cut but m-Acetyl chlorophosphonazo electric current=30A<Iqc (50A), the first round does not cut；
Wind power plant 7 does not allow to cut, and the first round does not cut.
Second wheel：
Criterion one：Humorous line current is 150A between interconnection>Idz21 (130A), but dfmin(1.56Hz)>Df21 (1.5Hz),
Criterion one is unsatisfactory for；
Criterion two：Humorous line current is 150A between interconnection>Idz22 (110A), but dfmin(1.56Hz)>Df22 (1.0Hz),
Criterion two is unsatisfactory for；
Criterion one is unsatisfactory for criterion two, and the second wheel is failure to actuate.
Third round：
Criterion one：Humorous line current is 150A=Idz31 (150A) between interconnection, and dfmin(1.56Hz)>df31
(1.0Hz), criterion one are unsatisfactory for；
Criterion：Humorous line current is 150A between interconnection>Idz32 (130A), but dfmin(1.56Hz)>Df32 (0.5Hz), sentences
It is unsatisfactory for according to two；
Criterion one is unsatisfactory for criterion two, and third round is failure to actuate.
Embodiment 2
As shown in figure 1, wind-powered electricity generation, which collects station m-Acetyl chlorophosphonazo control method, includes following functional module：(1) m-Acetyl chlorophosphonazo signal extraction
Module；(2) wind power plant allows to cut judge module；(3) m-Acetyl chlorophosphonazo frequecy characteristic judge module；(4) minute wheel classification excision module.
First, interconnection m-Acetyl chlorophosphonazo signal extraction module collects station to wind-powered electricity generation to the contact line current progress frequency spectrum point of major network
Analysis, wind-powered electricity generation as shown in Figure 2 collect station assume certain power network unusual service condition under interconnection current spectrum analyze result be to deposit
In following several m-Acetyl chlorophosphonazo components：
M-Acetyl chlorophosphonazo component 1：Amplitude is 150A, frequency 74Hz
M-Acetyl chlorophosphonazo component 2：Amplitude is 18A, frequency 43.96Hz
M-Acetyl chlorophosphonazo component 3：Amplitude be 10A, frequency 26.00Hz
Then the amplitude of the m-Acetyl chlorophosphonazo current component of amplitude maximum is 150A, frequency 74Hz, i.e. fc=74Hz, using 74Hz as
Center frequency designations bandpass filter is filtered to interconnection voltage and each wind-powered electricity generation field current, extracts m-Acetyl chlorophosphonazo signal, and
Calculate the phase angle difference of each m-Acetyl chlorophosphonazo component and interconnection m-Acetyl chlorophosphonazo electric current, it is assumed that the 74Hz of extraction each m-Acetyl chlorophosphonazo situation is as follows：
Interconnection m-Acetyl chlorophosphonazo voltage：Amplitude is 5.2kV, and phase angle is 30 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 1：Amplitude is 55A, and phase angle is 10 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 2：Amplitude is 49A, and phase angle is 15 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 3：Amplitude is 45A, and phase angle is 20 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 4：Amplitude is 40A, and phase angle is 25 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 5：Amplitude is 35A, and phase angle is 28 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 6：Amplitude is 30A, and phase angle is 40 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 7：Amplitude is 53A, and phase angle is 170 °
Then wind power plant allows to cut whether judge module allows each wind power plant to cut into capable judgement, and Rule of judgment is：
Condition one：The m-Acetyl chlorophosphonazo current component of interconnection amplitude maximum exceedes m-Acetyl chlorophosphonazo electric current threshold definite value, it is assumed that humorous
Ripple electric current threshold definite value is 100A；
Condition two：The absolute value of phase angle difference is less than a certain threshold between interconnection m-Acetyl chlorophosphonazo voltage and m-Acetyl chlorophosphonazo electric current, false
If the threshold is 90 °；
Condition three：The amplitude of wind power plant m-Acetyl chlorophosphonazo electric current is more than a minimum threshold definite value for allowing to cut, it is assumed that this is minimum
Threshold definite value is 20A；
Condition four：The phase angle difference of wind power plant m-Acetyl chlorophosphonazo electric current and interconnection m-Acetyl chlorophosphonazo electric current is less than an angle that can be adjusted
Degree, it is assumed that the angle that can be adjusted is 90 °；
Meet that the wind power plant of four conditions of the above is judged as allowing to cut simultaneously.
3rd step：M-Acetyl chlorophosphonazo frequecy characteristic judge module collects the shafting torsional oscillation mode of fired power generating unit near station according to wind-powered electricity generation
Frequency calculates one group of characteristic frequency, the corresponding characteristic frequency of each modal frequency, this example fc>50Hz, thus modal frequency with
The difference of corresponding characteristic frequency is power network rated frequency 50Hz, and calculates the absolute value of each characteristic frequency and fc difference, is asked
Go out minimum value dfmin.Assuming that nearby fired power generating unit has 3 shafting torsional oscillation mode frequencies：14.38Hz, 22.52Hz and 30.76Hz,
Then corresponding characteristic frequency is respectively：The absolute value of the difference of 64.38Hz, 72.52Hz, 80.76Hz, fc and characteristic frequency is：
9.62Hz, 1.48Hz, 6.76Hz, absolute value minimum frequency difference dfmin=1.48Hz.
4th step：Minute wheel classification excision module is according to interconnection m-Acetyl chlorophosphonazo electric current, dfminWith wind power plant m-Acetyl chlorophosphonazo electric current point
Each wind power plant for allowing to cut is cut in wheel classification, and action logic is as shown in Figure 3.
It is as follows that if minute wheel classification excision module respectively takes turns definite value：
First round definite value：
The first round acts threshold value：Idz1=100A, a wheel allow frequency departure threshold value：Df1=2Hz, action delay
The T1=5 seconds
Each wind power plant m-Acetyl chlorophosphonazo electric current action threshold value is 50A, i.e. Iqc1~Iqc7=50A,
Second wheel definite value：
The first element threshold value of second wheel：Idz21=130A,
First permission frequency departure threshold value of the second wheel：Df21=1.5Hz,
Second action threshold value of the second wheel：Idz22=110A,
Second permission frequency departure threshold value of the second wheel：Df22=1.0Hz,
The action delay T2=3 seconds, every grade is cut 3 wind power plants,
Third round definite value：
The first element threshold value of third round：Idz31=150A,
First permission frequency departure threshold value of third round：Df31=1.0Hz,
Second action threshold value of third round：Idz32=130A,
Second permission frequency departure threshold value of third round：Df32=0.5Hz,
The action delay T3=1 seconds,
Then respectively action situation is as follows：
The first round：Humorous line current is 150A between interconnection>Idz1 (100A), and dfmin(1.48Hz)<Df1 (2Hz), meet
First round operation condition, each wind power plant is judged, each wind power plant situation is as follows：
Wind power plant 1 allows to cut and m-Acetyl chlorophosphonazo electric current=55A>Iqc (50A), cut off through delay in 5 seconds, but the line actually can be 3
Cut off during the second by the second wheel；
Wind power plant 2 allows to cut but m-Acetyl chlorophosphonazo electric current=49A<Iqc (50A), the first round does not cut；
Wind power plant 3 allows to cut but m-Acetyl chlorophosphonazo electric current=45A<Iqc (50A), the first round does not cut；
Wind power plant 4 allows to cut but m-Acetyl chlorophosphonazo electric current=40A<Iqc (50A), the first round does not cut；
Wind power plant 5 allows to cut but m-Acetyl chlorophosphonazo electric current=35A<Iqc (50A), the first round does not cut；
Wind power plant 6 allows to cut but m-Acetyl chlorophosphonazo electric current=30A<Iqc (50A), the first round does not cut；
Wind power plant 7 is not allow to cut, and the first round does not cut.
Second wheel：
Criterion one：Humorous line current is 150A between interconnection>Idz21 (130A), and dfmin(1.48Hz)<Df21 (1.5Hz),
Criterion one meets；
Criterion two：Humorous line current is 150A between interconnection>Idz22 (110A), but dfmin(1.48Hz)>Df22 (1.0Hz),
Criterion two is unsatisfactory for；
Second wheel is permitted through delay first order action in 3 seconds, three of excision m-Acetyl chlorophosphonazo current amplitude maximum after the satisfaction of criterion one
Permitted the wind power plant cut：Wind power plant 1, wind power plant 2, wind power plant 3, timer is reset after the excision of these three wind power plants, if between interconnection
Harmonic wave is dropped to below action threshold, and the subsequent stages that system recovers normal then the second wheel do not reoperate, otherwise can reclocking, warp
Delay second level action in 3 seconds, three wind power plants for allowing to cut of the m-Acetyl chlorophosphonazo current amplitude maximum that excision is not removed：Wind power plant
4th, wind power plant 5, wind power plant 6；By that analogy, untill the normal or all permission wind cutting electric field of system recovery is removed.
Third round：
Criterion one：Humorous line current is 150A=Idz31 (150A) between interconnection, is unsatisfactory for condition, dfmin(1.48Hz)<
Df31 (1.5Hz), criterion one are unsatisfactory for；
Criterion two：Humorous line current is 150A between interconnection>Idz32 (130A), but dfmin(1.48Hz)>Df32 (0.5Hz),
Criterion two is unsatisfactory for；
Criterion one is unsatisfactory for criterion two, and third round is failure to actuate.
Embodiment 3
As shown in figure 1, wind-powered electricity generation, which collects station m-Acetyl chlorophosphonazo control method, includes following functional module：(1) m-Acetyl chlorophosphonazo signal extraction
Module；(2) wind power plant allows to cut judge module；(3) m-Acetyl chlorophosphonazo frequecy characteristic judge module；(4) minute wheel classification excision module.
First, interconnection m-Acetyl chlorophosphonazo signal extraction module collects station to wind-powered electricity generation to the contact line current progress frequency spectrum point of major network
Analysis, wind-powered electricity generation as shown in Figure 2 collect station assume certain power network unusual service condition under interconnection current spectrum analyze result be to deposit
In following several m-Acetyl chlorophosphonazo components：
M-Acetyl chlorophosphonazo component 1：Amplitude is 140A, frequency 73Hz
M-Acetyl chlorophosphonazo component 2：Amplitude is 10A, frequency 43.96Hz
M-Acetyl chlorophosphonazo component 3：Amplitude be 26A, frequency 27.00Hz
Then the amplitude of the m-Acetyl chlorophosphonazo current component of amplitude maximum is 140A, frequency 73Hz, i.e. fc=73Hz, using 73Hz as
Center frequency designations bandpass filter is filtered to interconnection voltage and each wind-powered electricity generation field current, extracts m-Acetyl chlorophosphonazo signal, and
Calculate the phase angle difference of each m-Acetyl chlorophosphonazo component and interconnection m-Acetyl chlorophosphonazo electric current, it is assumed that the 73Hz of extraction each m-Acetyl chlorophosphonazo situation is as follows：
Interconnection m-Acetyl chlorophosphonazo voltage：Amplitude is 5.2kV, and phase angle is 30 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 1：Amplitude is 55A, and phase angle is 10 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 2：Amplitude is 49A, and phase angle is 15 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 3：Amplitude is 45A, and phase angle is 20 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 4：Amplitude is 40A, and phase angle is 25 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 5：Amplitude is 35A, and phase angle is 28 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 6：Amplitude is 30A, and phase angle is 40 °
The m-Acetyl chlorophosphonazo electric current of wind power plant 7：Amplitude is 53A, and phase angle is 170 °
Then wind power plant allows to cut whether judge module allows each wind power plant to cut into capable judgement, and Rule of judgment is：
Condition one：The m-Acetyl chlorophosphonazo current component of interconnection amplitude maximum exceedes m-Acetyl chlorophosphonazo electric current threshold definite value, it is assumed that humorous
Ripple electric current threshold definite value is 100A；
Condition two：The absolute value of phase angle difference is less than a certain threshold between interconnection m-Acetyl chlorophosphonazo voltage and m-Acetyl chlorophosphonazo electric current, false
If the threshold is 90 °；
Condition three：The amplitude of wind power plant m-Acetyl chlorophosphonazo electric current is more than a minimum threshold definite value for allowing to cut, it is assumed that this is minimum
Threshold definite value is 20A；
Condition four：The phase angle difference of wind power plant m-Acetyl chlorophosphonazo electric current and interconnection m-Acetyl chlorophosphonazo electric current is less than an angle that can be adjusted
Degree, it is assumed that the angle that can be adjusted is 90 °；
Meet that the wind power plant of four conditions of the above is judged as allowing to cut simultaneously.
Wind power plant 1 is judged in this example to wind power plant 6 to allow to cut.
3rd step：M-Acetyl chlorophosphonazo frequecy characteristic judge module collects the shafting torsional oscillation mode of fired power generating unit near station according to wind-powered electricity generation
Frequency calculates one group of characteristic frequency, the corresponding characteristic frequency of each modal frequency, this example fc>50Hz, thus modal frequency with
The difference of corresponding characteristic frequency is power network rated frequency 50Hz, and calculates the absolute value of each characteristic frequency and fc difference, is asked
Go out minimum value dfmin.Assuming that nearby fired power generating unit has 3 shafting torsional oscillation mode frequencies：14.38Hz, 22.52Hz and 30.76Hz,
Then corresponding characteristic frequency is respectively：The absolute value of the difference of 64.38Hz, 72.52Hz, 80.76Hz, fc and characteristic frequency is：
8.62Hz, 0.48Hz, 7.76Hz, absolute value minimum frequency difference dfmin=0.48Hz.
4th step：Minute wheel classification excision module is according to interconnection m-Acetyl chlorophosphonazo electric current, dfminWith wind power plant m-Acetyl chlorophosphonazo electric current point
Each wind power plant for allowing to cut is cut in wheel classification, and action logic is as shown in Figure 3.
It is as follows that if minute wheel classification excision module respectively takes turns definite value：
First round definite value：
The first round acts threshold value：Idz1=100A, a wheel allow frequency departure threshold value：Df1=2Hz, action delay
The T1=5 seconds
Each wind power plant m-Acetyl chlorophosphonazo electric current action threshold value is 50A, i.e. Iqc1~Iqc7=50A,
Second wheel definite value：
The first element threshold value of second wheel：Idz21=130A,
First permission frequency departure threshold value of the second wheel：Df21=1.5Hz,
Second action threshold value of the second wheel：Idz22=110A,
Second permission frequency departure threshold value of the second wheel：Df22=1.0Hz,
The action delay T2=3 seconds, every grade is cut 3 wind power plants,
Third round definite value：
The first element threshold value of third round：Idz31=150A,
First permission frequency departure threshold value of third round：Df31=1.0Hz,
Second action threshold value of third round：Idz32=130A,
Second permission frequency departure threshold value of third round：Df32=0.5Hz,
The action delay T3=1 seconds
Then respectively action situation is as follows：
The first round：Humorous line current is 140A between interconnection>Idz1 (100A), and dfmin(0.48Hz)<Df1 (2Hz), meet
First round operation condition, each wind power plant is judged, each wind power plant situation is as follows：
Wind power plant 1 allows to cut and m-Acetyl chlorophosphonazo electric current=55A>Iqc (50A), cut off through delay in 5 seconds, but the line actually can be 1
Cut off during the second by third round；
Wind power plant 2 allows to cut but m-Acetyl chlorophosphonazo electric current=49A<Iqc (50A), the first round does not cut；
Wind power plant 3 allows to cut but m-Acetyl chlorophosphonazo electric current=45A<Iqc (50A), the first round does not cut；
Wind power plant 4 allows to cut but m-Acetyl chlorophosphonazo electric current=40A<Iqc (50A), the first round does not cut；
Wind power plant 5 allows to cut but m-Acetyl chlorophosphonazo electric current=35A<Iqc (50A), the first round does not cut；
Wind power plant 6 allows to cut but m-Acetyl chlorophosphonazo electric current=30A<Iqc (50A), the first round does not cut；
Wind power plant 7 is not allow to cut, and the first round does not cut.
Second wheel：
Criterion one：Humorous line current is 140A between interconnection>Idz21 (130A), and dfmin(0.48Hz)<Df21 (1.5Hz),
Criterion one meets；
Criterion two：Humorous line current is 140A between interconnection>Idz22 (110A), and dfmin(0.48Hz)<Df22 (1.0Hz),
Criterion two meets；
The second wheel is through delay first order action in 3 seconds after criterion one or criterion two meet, but this example is because third round can be at 1 second
When act and cut off it is all permission wind cutting electric fields, epicycle will not actual act.
Third round：
Criterion one：Humorous line current is 140A between interconnection<Idz31 (150A), is unsatisfactory for condition, dfmin(0.48Hz)<
Df31 (1.5Hz), criterion one are unsatisfactory for；
Criterion two：Humorous line current is 140A between interconnection>Idz32 (130A), and dfmin(0.48Hz)<Df32 (0.5Hz),
Criterion two meets；
After criterion two meets, all permission wind cutting electric fields are cut off after delay in 1 second：Wind power plant 1, wind power plant 2, wind power plant 3,
Wind power plant 4, wind power plant 5, wind power plant 6.
Station m-Acetyl chlorophosphonazo control method is collected by wind-powered electricity generation provided by the invention, can monitor that wind-powered electricity generation collects station and joined with major network simultaneously
Winding thread and each wind power plant, can there are larger m-Acetyl chlorophosphonazo electric current, and this wind of real-time judge online in on-line real time monitoring power network
It whether there is m-Acetyl chlorophosphonazo occurring source in remittance collection station, collect if this wind-powered electricity generation if station has m-Acetyl chlorophosphonazo occurring source according to humorous between interconnection
Ripple electric current, the frequecy characteristic of m-Acetyl chlorophosphonazo and wind power plant m-Acetyl chlorophosphonazo electric current, each wind power plant for allowing to cut is cut in minute wheel classification, until system
Recover normal.The present invention has considered the size of m-Acetyl chlorophosphonazo electric current, m-Acetyl chlorophosphonazo electric current frequency using the control method of minute wheel classification
Rate allows the factors such as time with the degree of agreement of the modal frequency of shaft system of unit torsional oscillation and the shafting fatigue of unit, when m-Acetyl chlorophosphonazo electricity
Stream is very big or torsional vibration frequency feature with unit is very identical can quickly cut off when the very big hyposynchronization of amplitude may be caused to vibrate between
Harmonic wave occurring source ensures the safety of unit, and when m-Acetyl chlorophosphonazo electric current less and with the torsional vibration frequency feature degree of agreement of unit
When not high, oscillation source can be progressively cut off, avoids largely crossing wind cutting group of motors.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.
Claims (4)
1. a kind of wind-powered electricity generation collects station m-Acetyl chlorophosphonazo control method, it is characterised in that framework corresponding to method includes following module：
(1) m-Acetyl chlorophosphonazo signal extraction module：Collect station to wind-powered electricity generation and carry out spectrum analysis to the contact line current of major network, calculate width
It is worth the frequency fc of maximum m-Acetyl chlorophosphonazo component, and extracts the m-Acetyl chlorophosphonazo signal in contact line voltage and each wind-powered electricity generation field current；
(2) wind power plant allows to cut judge module：According to interconnection m-Acetyl chlorophosphonazo electric current, m-Acetyl chlorophosphonazo voltage and wind power plant m-Acetyl chlorophosphonazo electric current
Judgement originally collects the wind power plant that station allows to cut；
(3) m-Acetyl chlorophosphonazo frequecy characteristic judge module：The absolute value of the difference of fc and one group of characteristic frequency is calculated, and is obtained therein
Minimum value dfmin；
(4) minute wheel classification excision module：According to interconnection m-Acetyl chlorophosphonazo electric current, dfminCut with the classification of wind power plant m-Acetyl chlorophosphonazo electric current minute wheel
Except each permission wind cutting electric field.
2. wind-powered electricity generation as claimed in claim 1 collects station m-Acetyl chlorophosphonazo control method, it is characterised in that：The wind power plant, which allows to cut, to be sentenced
The Rule of judgment of disconnected module is：
Condition one：The m-Acetyl chlorophosphonazo current component of interconnection amplitude maximum exceedes m-Acetyl chlorophosphonazo electric current threshold definite value；
Condition two：The absolute value of phase angle difference is less than the threshold value of setting between interconnection m-Acetyl chlorophosphonazo voltage and m-Acetyl chlorophosphonazo electric current；
Condition three：The amplitude of wind power plant m-Acetyl chlorophosphonazo electric current be more than setting allow cut minimum threshold definite value；
Condition four：The phase angle difference of wind power plant m-Acetyl chlorophosphonazo electric current and interconnection m-Acetyl chlorophosphonazo electric current is less than the angle adjusted of setting；
Meet that the wind power plant of four conditions of the above is judged as allowing to cut simultaneously.
3. wind-powered electricity generation as claimed in claim 1 collects station m-Acetyl chlorophosphonazo control method, it is characterised in that：The m-Acetyl chlorophosphonazo frequecy characteristic
The work implementation method of judge module is：The shafting torsional oscillation mode frequency for collecting fired power generating unit near station according to wind-powered electricity generation calculates one group
Characteristic frequency, and the absolute value of each characteristic frequency and fc difference in this group of characteristic frequency is calculated, obtain minimum value therein
dfmin。
4. wind-powered electricity generation as claimed in claim 1 collects station m-Acetyl chlorophosphonazo control method, it is characterised in that：The minute wheel classification excision mould
The work implementation method of block is：According to interconnection m-Acetyl chlorophosphonazo electric current, dfminCut with the classification of wind power plant m-Acetyl chlorophosphonazo electric current minute wheel each fair
Permitted the wind power plant cut：
The first round：Each wind power plant is judged, any wind power plant cuts off the wind power plant after meeting following condition：
Condition one：Humorous line current is more than first round action threshold value between interconnection,
Condition two：dfminAllow frequency departure threshold value less than the first round,
Condition three：The wind power plant is judged as allowing to cut in wind power plant allows to cut judge module,
Condition four：M-Acetyl chlorophosphonazo electric current is more than wind power plant m-Acetyl chlorophosphonazo electric current action threshold value,
It is delayed more than meeting after four conditions by the first round and cuts off the wind power plant；
Second wheel：There are two operating criterions, any criterion meets then to think that the wheel meets, is acted after the second wheel delay, respectively
Criterion is as follows：
Criterion one has following two conditions：
Condition one：Humorous line current is more than the first element threshold value of the second wheel between interconnection,
Condition two：dfminFirst less than the second wheel allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Criterion two has following two conditions：
Condition one：Humorous line current is more than second action threshold value of the second wheel between interconnection,
Condition two：dfminSecond less than the second wheel allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Each wind power plant for allowing to cut is cut in classification after criterion one or criterion two meet, every grade of delay is identical, is the action of the second wheel
Delay, timer is reset after every grade of action, reclocking and can be acted if the second wheel operation condition is still met, until all
The wind power plant for allowing to cut cut untill, every grade of order from the wind power plant for allowing to cut by m-Acetyl chlorophosphonazo electric current from big to small of action
Excision, the wind-powered electricity generation number cut off after every grade of action can be configured by definite value；
Third round：There are two operating criterions, any criterion meets then to think that the wheel meets, acted after third round is delayed, respectively
Criterion is as follows：
Criterion one has following two conditions：
Condition one：Humorous line current is more than the first element threshold value of third round between interconnection,
Condition two：dfminFirst less than third round allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Criterion two has following two conditions：
Condition one：Humorous line current is more than second action threshold value of third round between interconnection,
Condition two：dfminSecond less than third round allows frequency departure threshold value,
The two conditions meet then to be judged to criterion satisfaction simultaneously；
Criterion one or criterion two cut off the wind power plant simultaneously after meeting after third round action delay to be allowed to cut judge module
All wind power plants for allowing to cut judged.
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| CN104638664A (en) * | 2015-02-13 | 2015-05-20 | 北京四方继保自动化股份有限公司 | Wind power plant sub-synchronous oscillation protection method and protective device |
| CN105119286A (en) * | 2015-10-08 | 2015-12-02 | 南京南瑞继保电气有限公司 | Subsynchronous oscillation source location method and apparatus |
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| CN104638664A (en) * | 2015-02-13 | 2015-05-20 | 北京四方继保自动化股份有限公司 | Wind power plant sub-synchronous oscillation protection method and protective device |
| CN105119286A (en) * | 2015-10-08 | 2015-12-02 | 南京南瑞继保电气有限公司 | Subsynchronous oscillation source location method and apparatus |
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