CN113328438A - Double-tuning harmonic wave treatment device - Google Patents
Double-tuning harmonic wave treatment device Download PDFInfo
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- CN113328438A CN113328438A CN202110579019.6A CN202110579019A CN113328438A CN 113328438 A CN113328438 A CN 113328438A CN 202110579019 A CN202110579019 A CN 202110579019A CN 113328438 A CN113328438 A CN 113328438A
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 238000005067 remediation Methods 0.000 claims 2
- 238000001914 filtration Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- H02J3/01—Arrangements for reducing harmonics or ripples
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The invention is suitable for the technical field of passive filtering clean energy, energy conservation and emission reduction, and provides a double-tuned harmonic treatment device which comprises a signal acquisition module, an intelligent control module and a double-tuned harmonic absorption loop, wherein the signal acquisition module, the intelligent control module and the double-tuned harmonic absorption loop are arranged, and the signal acquisition module is used for acquiring the operating current parameters of the device and monitoring the operating state of the device; the intelligent control module is used for receiving the device operation data acquired by the signal acquisition module, comparing the device operation data with a reference fixed value to calculate deviation, judging the deviation range of the device operation data, and sending a reactance parameter adjustment control signal to achieve an intelligent adjustment optimal operation state; the double-tuned harmonic absorption loop is used for forming two resonant frequency impedance zeros to form a double-tuned harmonic absorption device, so that the double-tuned harmonic absorption loop can simultaneously have the function of absorbing two harmonic currents with different frequencies and eliminate the effect that the two harmonic currents with different frequencies pollute a power grid.
Description
Technical Field
The invention belongs to the technical field of passive filtering clean energy, energy conservation and emission reduction, and particularly relates to a double-tuned harmonic treatment device.
Background
In the operation process of the passive filtering harmonic treatment technology, in order to prevent system resonance, the operation mode is required to be firstly put into operation according to a low-order harmonic absorption loop, then, a high-order harmonic absorption loop is put into operation, and the cutting sequence is operated in the reverse direction.
And (3) putting operation: "low harmonic absorption circuit → high harmonic absorption circuit",
and (3) cutting operation: "higher harmonic wave absorption circuit → lower harmonic wave absorption circuit,
the problems of the prior passive filtering harmonic wave treatment technology are as follows:
in the use process of the passive filtering harmonic treatment technology, under the condition of low reactive power demand of a system, the low-order harmonic absorption loop is not completely put into operation, so that the higher-order harmonic absorption loop is forbidden to be put into operation, only the low-order harmonic treatment effect can be achieved under a certain operation environment, and the higher-order harmonic loses the treatment function.
The invention relates to a double-tuned harmonic treatment device, wherein one branch is provided with a low-order harmonic absorption channel and a high-order harmonic absorption channel, and the problem of high-order harmonic treatment imbalance caused by the fact that the device is operated according to a switching sequence due to the fact that system resonance is prevented in the operation process is solved.
Disclosure of Invention
The invention provides a double-tuning harmonic treatment device, aiming at solving the problems in the prior art.
The invention is realized in this way, the harmonic treatment device of double tuning, including:
the signal acquisition module is used for acquiring the operating current parameters of the device and monitoring the operating state of the device;
the intelligent control module is used for receiving the device operation data acquired by the signal acquisition module, comparing the device operation data with a reference fixed value to calculate deviation, judging the deviation range of the device operation data, and sending a reactance parameter adjustment control signal to achieve an intelligent adjustment optimal operation state;
and the double-tuned harmonic absorption loop is used for forming two impedance zeros of the resonant frequency to form the double-tuned harmonic absorption device.
Preferably, the double-tuned harmonic absorption loop is formed by connecting the resonant frequency impedance zero of the L1-C1 series resonant loop and the resonant frequency impedance pole of the L2-C2 parallel resonant loop in series to form a filter loop, and two resonant frequency impedance zeros are formed by using a topological structure of the resonant frequency impedance zero of the series resonant loop and the resonant frequency impedance pole of the parallel resonant loop to form the double-tuned harmonic absorption device.
Preferably, the signal acquisition module includes:
the current signal acquisition unit is used for operating the loop current transformer through the device and acquiring a device operating current signal;
the signal separation unit is used for separating the acquired current signals into two set frequency harmonic operation current values;
and the calculating unit is used for calculating the deviation of the separated set two frequency harmonic operating current values and a reference set value, judging the deviation range of the operating data of the device and outputting a reactance parameter adjusting control signal.
Compared with the prior art, the invention has the beneficial effects that: the double-tuned harmonic treatment device is provided with the signal acquisition module, the intelligent control module and the double-tuned harmonic absorption loop, wherein the signal acquisition module is used for acquiring the operating current parameters of the device and monitoring the operating state of the device; the intelligent control module is used for receiving the device operation data acquired by the signal acquisition module, comparing the device operation data with a reference fixed value to calculate deviation, judging the deviation range of the device operation data, and sending a reactance parameter adjustment control signal to achieve an intelligent adjustment optimal operation state; the double-tuned harmonic absorption loop is used for forming two resonant frequency impedance zeros to form a double-tuned harmonic absorption device, so that the double-tuned harmonic absorption loop can simultaneously have the function of absorbing two harmonic currents with different frequencies and eliminate the effect that the two harmonic currents with different frequencies pollute a power grid.
Drawings
FIG. 1 is a frequency impedance diagram of a double tuned harmonic suppression loop of the present invention.
FIG. 2 is a schematic diagram of the principle of the double-tuned harmonic suppression device of the present invention.
Fig. 3 is a schematic diagram of a signal acquisition module according to the present invention.
FIG. 4 illustrates the double-tuned harmonic suppression principle of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 4, the present invention provides a technical solution: the double-tuned harmonic treatment device comprises a signal acquisition module, an intelligent control module and a double-tuned harmonic absorption loop.
The signal acquisition module is used for acquiring the operating current parameters of the device and monitoring the operating state of the device.
Referring to fig. 3, in particular, the signal acquisition module includes: the device comprises a current signal acquisition unit, a signal separation unit, a calculation unit and a signal output unit. The current signal acquisition unit is used for operating the loop current transformer through the device and acquiring the operating current signal of the device. The signal separation unit is used for separating the collected current signals into two set frequency harmonic operation current values. The calculating unit is used for calculating the deviation of the separated set two frequency harmonic operating current values and a reference set value, judging the deviation range of the operating data of the device and outputting a reactance parameter adjusting control signal. The signal output unit is used for outputting a reactance parameter adjustment control signal to the intelligent control module.
As shown in fig. 4, the intelligent control module is configured to receive the device operation data acquired by the signal acquisition module, compare the device operation data with a reference fixed value to calculate a deviation, determine a deviation range of the device operation data, and send a reactance parameter adjustment control signal to achieve an intelligent adjustment optimal operation state. And adjusting the control signal according to the reactance parameter, automatically judging the optimal operation gear, and outputting the reactance gear adjustment control signal according to different combination modes of J1-3 and J2-3 so as to achieve the intelligent adjustment of the optimal operation state.
The double-tuned harmonic absorption loop is used for forming two resonant frequency impedance zeros to form the double-tuned harmonic absorption device.
Referring to fig. 1 and fig. 2, in the double-tuned harmonic absorption loop, a resonant frequency impedance zero of an L1-C1 series resonant loop and a resonant frequency impedance pole of an L2-C2 parallel resonant loop are connected in series to form a filter loop, and a topological structure of the resonant frequency impedance zero of the series resonant loop and the resonant frequency impedance pole of the parallel resonant loop is utilized to form two resonant frequency impedance zeros to form a double-tuned harmonic absorption device. Therefore, one branch has two harmonic absorption channels of low order and high order, and in the operation process, the problem of high order harmonic treatment imbalance caused by the fact that system resonance is prevented from being generated and the branch operates according to the switching sequence is solved. The selection of different resonance parameters forms the zeros of the two selected frequencies (shown in fig. 1: the resonance parameters are selected to be 5 th and 13 th harmonics) to form a harmonic low impedance path for the two frequencies.
The double-tuned harmonic treatment device is provided with the signal acquisition module, the intelligent control module and the double-tuned harmonic absorption loop, wherein the signal acquisition module is used for acquiring the operating current parameters of the device and monitoring the operating state of the device; the intelligent control module is used for receiving the device operation data acquired by the signal acquisition module, comparing the device operation data with a reference fixed value to calculate deviation, judging the deviation range of the device operation data, and sending a reactance parameter adjustment control signal to achieve an intelligent adjustment optimal operation state; the double-tuned harmonic absorption loop is used for forming two resonant frequency impedance zeros to form a double-tuned harmonic absorption device, so that the double-tuned harmonic absorption loop can simultaneously have the function of absorbing two harmonic currents with different frequencies and eliminate the effect that the two harmonic currents with different frequencies pollute a power grid.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. Double-tuning harmonic treatment device, its characterized in that: the method comprises the following steps:
the signal acquisition module is used for acquiring the operating current parameters of the device and monitoring the operating state of the device;
the intelligent control module is used for receiving the device operation data acquired by the signal acquisition module, comparing the device operation data with a reference fixed value to calculate deviation, judging the deviation range of the device operation data, and sending a reactance parameter adjustment control signal to achieve an intelligent adjustment optimal operation state;
and the double-tuned harmonic absorption loop is used for forming two impedance zeros of the resonant frequency to form the double-tuned harmonic absorption device.
2. The double-tuned harmonic remediation device of claim 1, wherein: the double-tuned harmonic absorption loop adopts the resonant frequency impedance zero of the L1-C1 series resonance loop and the resonant frequency impedance pole of the L2-C2 parallel resonance loop to form a filter loop in series, and two resonant frequency impedance zeros are formed by utilizing a topological structure of the resonant frequency impedance zero of the series resonance loop and the resonant frequency impedance pole of the parallel resonance loop to form the double-tuned harmonic absorption device.
3. The double-tuned harmonic remediation device of claim 1, wherein: the signal acquisition module includes:
the current signal acquisition unit is used for operating the loop current transformer through the device and acquiring a device operating current signal;
the signal separation unit is used for separating the acquired current signals into two set frequency harmonic operation current values;
and the calculating unit is used for calculating the deviation of the separated set two frequency harmonic operating current values and a reference set value, judging the deviation range of the operating data of the device and outputting a reactance parameter adjusting control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110579019.6A CN113328438A (en) | 2021-05-26 | 2021-05-26 | Double-tuning harmonic wave treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110579019.6A CN113328438A (en) | 2021-05-26 | 2021-05-26 | Double-tuning harmonic wave treatment device |
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| CN113328438A true CN113328438A (en) | 2021-08-31 |
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| CN202110579019.6A Pending CN113328438A (en) | 2021-05-26 | 2021-05-26 | Double-tuning harmonic wave treatment device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694329A (en) * | 2005-05-20 | 2005-11-09 | 清华大学 | Double-tunnel filter based on controllable reactor |
| CN202042905U (en) * | 2011-04-26 | 2011-11-16 | 湖北中兴电力试验研究有限公司 | Double tuned filter applied to automatic tracing compensation arc suppression coil complete device |
| CN102570467A (en) * | 2012-02-16 | 2012-07-11 | 南京理工大学常熟研究院有限公司 | Double-tuned filter based on controllable reactor |
| CN204243758U (en) * | 2014-10-29 | 2015-04-01 | 国网辽宁省电力有限公司朝阳供电公司 | Based on the double-tuned filter of controlled reactor |
| CN106528950A (en) * | 2016-10-18 | 2017-03-22 | 国网浙江省电力公司电力科学研究院 | Simplified calculation method for equivalent modeling of alternating-current filter |
| US9667063B1 (en) * | 2016-02-19 | 2017-05-30 | Wilsun Xu | Harmonic filter for multipulse converter systems |
-
2021
- 2021-05-26 CN CN202110579019.6A patent/CN113328438A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694329A (en) * | 2005-05-20 | 2005-11-09 | 清华大学 | Double-tunnel filter based on controllable reactor |
| CN202042905U (en) * | 2011-04-26 | 2011-11-16 | 湖北中兴电力试验研究有限公司 | Double tuned filter applied to automatic tracing compensation arc suppression coil complete device |
| CN102570467A (en) * | 2012-02-16 | 2012-07-11 | 南京理工大学常熟研究院有限公司 | Double-tuned filter based on controllable reactor |
| CN204243758U (en) * | 2014-10-29 | 2015-04-01 | 国网辽宁省电力有限公司朝阳供电公司 | Based on the double-tuned filter of controlled reactor |
| US9667063B1 (en) * | 2016-02-19 | 2017-05-30 | Wilsun Xu | Harmonic filter for multipulse converter systems |
| CN106528950A (en) * | 2016-10-18 | 2017-03-22 | 国网浙江省电力公司电力科学研究院 | Simplified calculation method for equivalent modeling of alternating-current filter |
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Application publication date: 20210831 |
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