CN103487754A - Wind power generation digital flickermeter for small-scale wind speed environment - Google Patents

Wind power generation digital flickermeter for small-scale wind speed environment Download PDF

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Publication number
CN103487754A
CN103487754A CN201310391895.1A CN201310391895A CN103487754A CN 103487754 A CN103487754 A CN 103487754A CN 201310391895 A CN201310391895 A CN 201310391895A CN 103487754 A CN103487754 A CN 103487754A
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CN
China
Prior art keywords
wind
wind speed
flickering
flickermeter
low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310391895.1A
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Chinese (zh)
Inventor
田春光
吕项羽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201310391895.1A priority Critical patent/CN103487754A/en
Publication of CN103487754A publication Critical patent/CN103487754A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a wind power generation digital flickermeter for small-scale wind speed environment. The wind power generation digital flickermeter is characterized by comprising an IEC flickermeter body used for receiving amplitude-modulated waves, carriers and carrier amplitude values and primarily working out the flickering result, a smoothing filter used for smoothing waves according to a convolution value, a wind speed sensor used for receiving wind speed information and converting the wind speed information to signal waves, a wind direction sensor used for receiving wind speed information and converting the wind speed information to signal waves, a low-pass filter used for filtering low-frequency signals in the wind speed sensor and low-frequency signals in the wind direction sensor, a high-pass filter used for filtering high-frequency signals in the wind speed sensor and high-frequency signals in the wind direction sensor, a feedback neural network used for introducing a flickering value and modifying the flickering result through the wind speed information and the wind direction information and a waveform outputting device used for converting output of the feedback neural network to the output of waveforms. Introducing wind information of a partial small-scale region to modify the flickering detection result, the wind power generation digital flickermeter improves wind power low-frequency signal detection sensitivity and precision.

Description

A kind of wind-power electricity generation digital flicker towards small scale wind speed environment
Technical field
The invention belongs to generating and electric energy management field, relate to a kind of wind-power electricity generation digital flicker towards small scale wind speed environment.
Background technology
Voltage fluctuation and flickering are one of main power quality problems of wind power generating set, must measure the flickering that it produces when wind power generating set is carried out to type approval, and then obtain the flickering coefficient; When being carried out to electric energy quality test, whole wind energy turbine set needs equally to measure the flickering that it produces.Accurately detect the wind-powered electricity generation voltage flicker, contribute to assess the impact that the wind-electricity integration voltage flicker causes system, the inhibition voltage flicker that contributes to take appropriate measures, have important effect to improving the quality of power supply.
Current industry is mainly used flickermeter to be based on " lamp-eye-brain " link principle of simulation of IEC, but the voltage fluctuation frequency caused due to wind-electricity integration is only 1~2Hz usually, the flickering system of this IEC principles of construction is responsive not to this low-frequency signals, causes that detecting error strengthens.
Variation has occurred in the wind environment that the basic reason that causes the wind-powered electricity generation flickering is actually the blower fan part, so consider that in the structure digital flicker factor of wind will be conducive to improve accuracy of detection.
summary of the inventiontechnical matters to be solved by this invention is to provide wind speed, the wind direction information under a kind of small scale environment that can introduce part, wind turbine position, and this information is incorporated into to the digital flicker among flicker detection, to improve accuracy of detection.
For solving the problems of the technologies described above, the invention provides a kind of wind-power electricity generation digital flicker towards small scale wind speed environment, it is characterized in that comprising:
(1) IEC flickering device, for receiving modulated wave, carrier wave and carrier amplitude value, primary Calculation goes out the flickering result;
(2) smoothing filter, for carrying out smoothing by ripple according to the convolution value;
(3) air velocity transducer, for receiving wind speed information, be converted to signal wave;
(4) wind transducer, for receiving wind direction information, be converted to signal wave;
(5) low-pass filter, for filtering out the low-frequency signals of air velocity transducer, wind transducer;
(6) Hi-pass filter, for filtering out the radio-frequency signal of air velocity transducer, wind transducer;
(7) feedback neural net, for introducing the flickering value, by wind speed, wind direction information, the flickering result being revised;
(8) waveform follower, be converted to waveform output for the output by the feedback neural net.
Compared with prior art, the invention has the beneficial effects as follows:
Introduce the wind breath in local small scale area the flicker detection result is revised, improve the susceptibility to the detection of wind-powered electricity generation low frequency signal, improve precision.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the specific embodiment of the invention comprises:
(1) IEC flickering device, for receiving modulated wave, carrier wave and carrier amplitude value, primary Calculation goes out the flickering result;
(2) smoothing filter, carry out smoothing by ripple according to the convolution value;
(3) air velocity transducer, receive the wind speed information in local small scale area, is converted to signal wave;
(4) wind transducer, receive the wind direction information in local small scale area, is converted to signal wave;
(5) low-pass filter, filter out the low-frequency signals in air velocity transducer, wind transducer;
(6) Hi-pass filter, filter out the radio-frequency signal in air velocity transducer, wind transducer;
(7) feedback neural net, introduce the flickering value, by wind speed, wind direction information, the flickering result revised together;
(8) waveform follower, be converted to waveform output by the output of the refreshing machine net of feedback.
Principle of work: receipts modulated wave, carrier wave and carrier amplitude value that the test wind turbine is used are input among IEC flickering device, and IEC flickering device connects smoothing filter, by the flickering of primary Calculation smoothing as a result; The information of wind is received by air velocity transducer and wind transducer, and by low-pass filter and Hi-pass filter, the ripple information of wind is divided into to low frequency and two parts of high frequency, the feedback neural net receives the preliminary flicker detection result of smoothing filter output, and according to the output of low-pass filter and Hi-pass filter, the flickering result is revised, result is exported by the waveform follower.

Claims (1)

1. the wind-power electricity generation digital flicker towards small scale wind speed environment is characterized in that comprising:
(1) IEC flickering device, for receiving modulated wave, carrier wave and carrier amplitude value, primary Calculation goes out the flickering result;
(2) smoothing filter, for carrying out smoothing by ripple according to the convolution value;
(3) air velocity transducer, for receiving wind speed information, be converted to signal wave;
(4) wind transducer, for receiving wind direction information, be converted to signal wave;
(5) low-pass filter, for filtering out the low-frequency signals of air velocity transducer, wind transducer;
(6) Hi-pass filter, for filtering out the radio-frequency signal of air velocity transducer, wind transducer;
(7) feedback neural net, for introducing the flickering value, by wind speed, wind direction information, the flickering result being revised;
(8) waveform follower, be converted to waveform output for the output by the feedback neural net.
CN201310391895.1A 2013-09-02 2013-09-02 Wind power generation digital flickermeter for small-scale wind speed environment Pending CN103487754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310391895.1A CN103487754A (en) 2013-09-02 2013-09-02 Wind power generation digital flickermeter for small-scale wind speed environment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310391895.1A CN103487754A (en) 2013-09-02 2013-09-02 Wind power generation digital flickermeter for small-scale wind speed environment

Publications (1)

Publication Number Publication Date
CN103487754A true CN103487754A (en) 2014-01-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310391895.1A Pending CN103487754A (en) 2013-09-02 2013-09-02 Wind power generation digital flickermeter for small-scale wind speed environment

Country Status (1)

Country Link
CN (1) CN103487754A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104155542B (en) * 2014-07-15 2017-01-18 中国船舶重工集团公司第七一九研究所 Detection method suitable for flickering generated by high-frequency inter-harmonics
CN110397554A (en) * 2019-09-05 2019-11-01 国电联合动力技术有限公司 Wind turbines Yaw control method, device and the Wind turbines of intelligent optimizing
CN112782789A (en) * 2020-12-25 2021-05-11 东营市气象局 Typhoon movement prediction method and device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104155542B (en) * 2014-07-15 2017-01-18 中国船舶重工集团公司第七一九研究所 Detection method suitable for flickering generated by high-frequency inter-harmonics
CN110397554A (en) * 2019-09-05 2019-11-01 国电联合动力技术有限公司 Wind turbines Yaw control method, device and the Wind turbines of intelligent optimizing
CN112782789A (en) * 2020-12-25 2021-05-11 东营市气象局 Typhoon movement prediction method and device

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Application publication date: 20140101

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