CN103338025A - A power frequency induction adjustable resonance apparatus and a frequency modulation method thereof for determining a power frequency in-series resonant condition - Google Patents
A power frequency induction adjustable resonance apparatus and a frequency modulation method thereof for determining a power frequency in-series resonant condition Download PDFInfo
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- CN103338025A CN103338025A CN2013102197293A CN201310219729A CN103338025A CN 103338025 A CN103338025 A CN 103338025A CN 2013102197293 A CN2013102197293 A CN 2013102197293A CN 201310219729 A CN201310219729 A CN 201310219729A CN 103338025 A CN103338025 A CN 103338025A
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- 230000005284 excitation Effects 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 4
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 4
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Abstract
The invention discloses a power frequency induction adjustable resonance apparatus and a frequency modulation method thereof for determining a power frequency in-series resonant condition. A frequency conversion control power supply is included. The frequency conversion control power supply supplies voltage to an excitation transformer primary side. An excitation transformer secondary side is connected to a detected test product through a high voltage adjustable reactor. A voltage acquisition unit which is connected to the frequency conversion control power supply is also included. The frequency conversion control power supply gives signals according to acquired voltage signals so as to drive the inductance electric adjusting mechanism to adjust the high voltage adjustable electric reactor, so that the whole system performs resonance under the condition of the power frequency. According to the method, the frequency conversion power supply is adopted. When the electric reactor is adjusted well, a resonant point is searched in a mode of automatic resonance under the condition of low voltage. The resonance condition is determined through comparing the difference between the resonant frequency point and a frequency point of 50 Hz. An adjusting amount and a direction of a reactor air gap are pointed. The resonant condition can be rapidly determined and the power frequency resonance can be rapidly realized. Power frequency resonance boost when the voltage transformer is checked in an on-site mode is provided with convenience. The labor production efficiency is raised and the power frequency induction adjustable apparatus and a frequency modulation method thereof for determining a power frequency in-series resonant condition have a broad application prospect.
Description
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Technical field
The invention belongs to a kind of industrial frequency inductance-regulation resonance device and adopt this device to judge the method for power frequency series resonance state by mode of frequency regulation.
Background technology
The test method of series resonance extensively adopts at present, changeable in the series resonance is three amounts, inductance, electric capacity and frequency, usually think that for test product test frequency 20 ~ 300Hz such as cables it is equivalent to 50Hz, so the test of this class test product can be undertaken by the method that changes frequency, is called variable-frequency series-resonance usually.It is the situation of a certain frequency range that the alternating voltage frequency is not required or allow test frequency, can find resonant frequency point accurately by the frequency regulation resonance in this frequency range, thereby reduces the requirement to power supply capacity better.
But in power test, the capicitive sample that has is tested (such as the error test of voltage transformer), can only under power frequency 50Hz, carry out, so way resonance that can only industrial frequency inductance-regulation.Not possess the relative power frequency difference of data of power frequency equivalence or measurement bigger because differing from test product under the frequency of power frequency, the test of this class test product must be carried out under power frequency, so we can only make its resonance under power frequency by changing inductance, electric capacity or changing both simultaneously, this class resonance is called power frequency series resonance.
The resonance device of this industrial frequency inductance-regulation generally is adjusting and the measurement of taking to carry out the reactor inductance amount under uncharged situation, and then add some points and boost, but whether really being in resonance condition can't know, even because crossing in test, the off-resonance Frequency point has no idea voltage is risen to desired value sometimes, often need to adjust inductance repeatedly, take time and effort.If it is bad that parameter is regulated, resonance resonance can occur or owe resonance under power frequency, has so just increased the capacity of power supply, has also influenced the waveform of resonance.
Summary of the invention
The objective of the invention is to overcome the problems of the prior art, what adopt is a kind of method of judging the power frequency series resonance state by mode of frequency regulation, regulate inductance behind elder generation's frequency modulation and make it resonance under power frequency, and can find its real resonance frequency very quick, very accurately, have a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of industrial frequency inductance-regulation resonance device is characterized in that, comprises the variable frequency control power supply, and for the excitation transformer primary side provides voltage, the excitation transformer secondary side is connected to the detected test product of external need power-frequency voltage by a high pressure Regulatable reactor; Described high pressure Regulatable reactor is regulated air gap by inductance motorized adjustment mechanism; Also comprise a voltage acquisition unit that is connected with the variable frequency control power supply, described variable frequency control power supply is according to the voltage signal that collects, and provides signal and drives described inductance motorized adjustment mechanism and regulate described high pressure Regulatable reactor, makes whole system resonance under power frequency.
At least comprise a slice digital signal processor in the described variable frequency control power supply, the IPM that carries out voltage sample, power section drives the feedback signal processing of the generation of signal and waveform, protection, the control of inductance motorized adjustment mechanism.
Also comprise another sheet digital signal processor in the described variable frequency control power supply, be used for control alternating interface between man and computer, management clock and data and show.
Two digital signal processors carry out communication by synchronous serial interface.
Method based on described industrial frequency inductance-regulation resonance device frequency modulation judgement power frequency series resonance state is characterized in that, comprises the steps: (1) intelligent frequency-conversion control power supply output low pressure, makes the capacitor C X resonance of reactor and GIS, writes down the resonance frequency f1 of this moment;
(2) more current resonance frequency f1 and the relation of power frequency 50Hz if resonance frequency is higher than 50Hz, then show the resonant inductance amount less than the inductance value of needs, and the air gap that adjustment of inductance mechanism regulates the high pressure Regulatable reactor automatically reduces to increase inductance value; If resonance frequency is lower than 50Hz, then show the resonant inductance amount greater than the inductance value of needs, the air gap that adjustment of inductance mechanism regulates the high pressure Regulatable reactor automatically increases to reduce inductance value;
(3) the adjusting inductance, boosts at 50Hz ± 0.5Hz scope interior resonance then until resonance frequency.
This method is a kind of method of judging the power frequency series resonance state by mode of frequency regulation, power supply adopts variable frequency power supply, after reactor regulates, seek resonance point by the mode from dynamic resonance under low pressure, relatively the difference of resonant frequency point and test frequency point 50Hz is judged the resonance situation, and point out regulated quantity and the direction of reactor air gap, and can realize industrial frequency resonance fast and judge resonance condition, improve labor productivity.
The invention has the beneficial effects as follows: a kind of method of judging the power frequency series resonance state by mode of frequency regulation provided by the invention, principle based on resonance, the advantage and the characteristics that possess all resonance, can perfect realization power frequency boost, can measure the capacitance of test specimen, the required inductance value of test specimen under the power frequency that can convert, charged adjusting reactor, make itself and test specimen resonance under power frequency, and can find its true resonance frequency accurately, solved the phenomenon of crossing resonance or owing resonance that resonance exists under power frequency, reduced the capacity of power supply, improve the waveform of resonance, power supply adopts variable frequency power supply, after reactor regulates, seek resonance point by the mode from dynamic resonance under low pressure, relatively the difference of resonant frequency point and test frequency point 50Hz is judged the resonance situation, and point out regulated quantity and the direction of reactor air gap, this kind method has realized comparatively accurate resonance, guaranteed that fully resonance carries out at the state of the best, can judge the direction of the required adjusting inductance of resonance by this method, automatically regulate then, reduce labour intensity greatly, can realize industrial frequency resonance fast and judge resonance condition, improve labor productivity, have a good application prospect.
Description of drawings
Fig. 1 realizes the schematic diagram of this method;
Fig. 2 is the Design of Digital Circuit schematic diagram of variable frequency control power supply of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, industrial frequency inductance-regulation resonance device provided by the invention comprises intelligent frequency-conversion control power supply, and for the excitation transformer primary side provides voltage, the excitation transformer secondary side is connected to the detected test product of external need power-frequency voltage by a high pressure Regulatable reactor; The high pressure Regulatable reactor is regulated air gap by inductance motorized adjustment mechanism; Also comprise a voltage acquisition unit that is connected with the variable frequency control power supply, the variable frequency control power supply is according to the voltage signal that collects, provides signal and drives described inductance motorized adjustment mechanism and regulate described high pressure Regulatable reactor, makes whole system resonance under power frequency.The high-voltage outlet terminal of high pressure Regulatable reactor connects the high-voltage terminal sleeve A of the voltage transformer pt unit among the sulphur hexafluoride gas insulated metal enclosed swit chgear GIS, and secondary part a, the x of the voltage transformer pt unit among the sulphur hexafluoride gas insulated metal enclosed swit chgear GIS provides on the high pressure sampled signal terminal that feeds back signal to intelligent frequency-conversion control power supply by electric pressure converter.
A kind ofly judge the method for power frequency series resonance state by mode of frequency regulation, concrete steps are as follows:
(1) intelligent frequency-conversion control power supply is exported low pressure, makes the capacitor C X resonance of high pressure Regulatable reactor and sulphur hexafluoride gas insulated metal enclosed swit chgear GIS, writes down the resonance frequency of this moment.
(2) more current resonance frequency and the relation of 50Hz if resonance frequency is higher than 50Hz, then show the resonant inductance amount less than the inductance value of needs, and the air gap that inductance motorized adjustment mechanism regulates the high pressure Regulatable reactor automatically reduces to increase inductance value; If resonance frequency is lower than 50Hz, then show the resonant inductance amount greater than the inductance value of needs, the air gap that inductance motorized adjustment mechanism regulates the high pressure Regulatable reactor automatically increases to reduce inductance value.
(3) inductance of adjusting high pressure Regulatable reactor, boosts at 50Hz place resonance then until resonance frequency.(because the Q value of resonance itself is higher, resonance has certain passband again, so also can satisfy certain limit (± 0.5Hz) can boost) during adjusting near 50Hz.
As shown in Figure 2, the intelligent frequency-conversion of this method control power supply has played the effect of changeable frequency, voltage variable, and according to the high-voltage signal judgement resonance condition that collects, and provide signal driving inductance motorized adjustment mechanism adjusting high pressure Regulatable reactor, make whole system resonance under power frequency.
Intelligent frequency-conversion control power supply adopts totally digitilized technology and senior integrated circuit, use two digital signal processor DSPs 1, DSP2, that adopt in the present embodiment is the DSP that TI company produces, model is respectively TM S320F2812, TMS320F206, wherein the TMS320F2812 IPM that carries out voltage sample, the power section feedback signal that drives generation, the protection of signal and waveform handle, the control of inductance motorized adjustment mechanism; TMS320F206 mainly is the management of control, clock of alternating interface between man and computer and data demonstration etc.Two digital signal processor DSPs 1, DSP2 connect the realization communication by synchronous serial interface.
More than show and described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. an industrial frequency inductance-regulation resonance device is characterized in that, comprises the variable frequency control power supply, for the excitation transformer primary side provides voltage; Described excitation transformer secondary side is connected to the detected test product of external need power-frequency voltage by a high pressure Regulatable reactor; Described high pressure Regulatable reactor is regulated air gap by inductance motorized adjustment mechanism; Also comprise a voltage acquisition unit that is connected with the variable frequency control power supply, described variable frequency control power supply is according to the voltage signal that collects, and provides signal and drives described inductance motorized adjustment mechanism and regulate described high pressure Regulatable reactor, makes whole system resonance under power frequency.
2. industrial frequency inductance-regulation resonance device according to claim 1; it is characterized in that; at least comprise a slice digital signal processor in the described variable frequency control power supply, the IPM that carries out voltage sample, power section drives the feedback signal processing of the generation of signal and waveform, protection, the control of inductance motorized adjustment mechanism.
3. industrial frequency inductance-regulation resonance device according to claim 2 is characterized in that, also comprises another sheet digital signal processor in the described variable frequency control power supply, is used for control alternating interface between man and computer, management clock and data and shows.
4. industrial frequency inductance-regulation resonance device according to claim 3 is characterized in that, two digital signal processors carry out communication by synchronous serial interface.
5. judge the method for power frequency series resonance state based on the described industrial frequency inductance-regulation resonance device of claim 1 frequency modulation, it is characterized in that, comprise the steps:
(1) intelligent frequency-conversion control power supply is exported low pressure, makes the capacitor C X resonance of high pressure Regulatable reactor and sulphur hexafluoride gas insulated metal enclosed swit chgear GIS, writes down the resonance frequency f1 of this moment;
(2) more current resonance frequency f1 and the relation of power frequency 50Hz if resonance frequency is higher than 50Hz, then show the resonant inductance amount less than the inductance value of needs, and the air gap that adjustment of inductance mechanism regulates the high pressure Regulatable reactor automatically reduces to increase inductance value; If resonance frequency is lower than 50Hz, then show the resonant inductance amount greater than the inductance value of needs, the air gap that adjustment of inductance mechanism regulates the high pressure Regulatable reactor automatically increases to reduce inductance value;
(3) inductance of adjusting high pressure Regulatable reactor, boosts at 50Hz ± 0.5Hz scope interior resonance then until resonance frequency.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635192A (en) * | 2014-12-10 | 2015-05-20 | 国网四川省电力公司电力科学研究院 | Power frequency resonance booster power supply used for verifying 550kV voltage transformer in GIS (gas insulated switchgear) |
| CN109856585A (en) * | 2019-02-28 | 2019-06-07 | 国网福建省电力有限公司莆田供电公司 | Resonant state judgment method during a kind of voltage mutual inductor serial resonance step-up |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390105A (en) * | 2017-07-14 | 2017-11-24 | 江苏锦秀高压电器有限公司 | Industrial frequency inductance-regulation series resonance test system and its test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201937535U (en) * | 2011-02-22 | 2011-08-17 | 新华都特种电气股份有限公司 | Flux control and pulse width modulation (PWM) control based controllable reactor |
| CN102928705A (en) * | 2012-10-29 | 2013-02-13 | 河北省电力公司电力科学研究院 | Voltage transformer error test power frequency resonance step-up automatic test method in GIS (geographic information system) |
| CN203340031U (en) * | 2013-06-05 | 2013-12-11 | 国家电网公司 | Power frequency inductance regulation resonance device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201937535U (en) * | 2011-02-22 | 2011-08-17 | 新华都特种电气股份有限公司 | Flux control and pulse width modulation (PWM) control based controllable reactor |
| CN102928705A (en) * | 2012-10-29 | 2013-02-13 | 河北省电力公司电力科学研究院 | Voltage transformer error test power frequency resonance step-up automatic test method in GIS (geographic information system) |
| CN203340031U (en) * | 2013-06-05 | 2013-12-11 | 国家电网公司 | Power frequency inductance regulation resonance device |
Non-Patent Citations (2)
| Title |
|---|
| 陈崇源 等: "串联调谐装置的调谐分析", 《变压器》, vol. 39, no. 4, 30 April 2012 (2012-04-30), pages 20 - 21 * |
| 顾敏晓: "串联电抗器电抗值的设计及制造注意事项", 《科技传播》, no. 10, 31 May 2012 (2012-05-31), pages 75 - 76 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635192A (en) * | 2014-12-10 | 2015-05-20 | 国网四川省电力公司电力科学研究院 | Power frequency resonance booster power supply used for verifying 550kV voltage transformer in GIS (gas insulated switchgear) |
| CN109856585A (en) * | 2019-02-28 | 2019-06-07 | 国网福建省电力有限公司莆田供电公司 | Resonant state judgment method during a kind of voltage mutual inductor serial resonance step-up |
| CN109856585B (en) * | 2019-02-28 | 2020-12-18 | 国网福建省电力有限公司莆田供电公司 | Resonance state judgment method in voltage transformer series resonance boosting process |
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Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Co-patentee after: Jiangsu Electric Power Company Patentee after: State Grid Corporation of China Co-patentee after: Electric Power Research Institute of Jiangsu Electric Power Company Co-patentee after: Wuhan pan electric Polytron Technologies Inc Address before: 100761 West Chang'an Avenue, Beijing, No. 86, No. Co-patentee before: Jiangsu Electric Power Company Patentee before: State Grid Corporation of China Co-patentee before: Electric Power Research Institute of Jiangsu Electric Power Company Co-patentee before: Wuhan Pandian Technology Co., Ltd. |