CN103424583A - Automatic polarity-changing direct current boosting device - Google Patents
Automatic polarity-changing direct current boosting device Download PDFInfo
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- CN103424583A CN103424583A CN201310350258XA CN201310350258A CN103424583A CN 103424583 A CN103424583 A CN 103424583A CN 201310350258X A CN201310350258X A CN 201310350258XA CN 201310350258 A CN201310350258 A CN 201310350258A CN 103424583 A CN103424583 A CN 103424583A
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Abstract
The invention relates to an automatic polarity-changing direct current boosting device and belongs to the technical field of high-voltage experiments. A high-voltage silicon pile is driven to rotate by positive and reverse rotation of a motor in an electric mechanism, and polarity of the high-voltage silicon pile is changed. The automatic polarity-changing direct current boosting device can perform full-automatic polarity-changing boosting control on a random impulse voltage generator, the outer side is free of high voltage, and the automatic polarity-changing direct current boosting device can be suitable for random impulse voltage generators and has the advantages of being high in working efficiency and safety reliability and small in occupied space and the like.
Description
Technical field
The present invention relates to a kind of automatic polarity DC boosting device, belong to the High-Voltage Experimentation Technology field.
Background technology
Along with the development of UHV (ultra-high voltage) and extra-high voltage electric transmission and transformation technology, the design of the interior external insulation of electric power line pole tower and an electrical equipment has material impact to operational reliability and the economy of project of transmitting and converting electricity.In order to realize the insulating Design of reasonable yardstick, need, by the positive and negative polarity impulse overvoltage of test unit simulation system, to put on insulated article, carry out test and detect, determine dielectric strength.
Usually adopt capacitor group charged in parallel and discharged in series principle to set up impulse voltage generator and produce positive and negative polarity voltage, in order to simulate the positive and negative polarity impulse overvoltage of electric system.In carrying out the impulse voltage test process of two kinds of polarity, complete a kind of polarity (positive polarity or negative polarity), then while carrying out the test of another kind of polar voltages, needing to change the output voltage polarity of impulse voltage generator.
Impulse voltage generator, in charging process, by changing increasing apparatus polarity, changes the charging voltage polarity of every grade of capacitor, and then realizes the polarity conversion of positive and negative polarity high-amplitude value surge voltage.
The problems such as the traditional method that changes increasing apparatus is to utilize the mode of pressure regulator and silicon stack series connection, take up room larger, and polar exchanging manually changes after need to cutting off the power supply, and both inconvenience was also inaccurate, and also dangerous sex work efficiency is low.
And this kind of method high pressure after the pressure regulator High voltage output is outside exposed, other need to keep certain insulation distance in earthy part design, so, from economy and use security standpoint, consider, traditional increasing apparatus polarity conversion method, exist significantly not enough.
Summary of the invention
For the deficiency of background technology, the present invention rotates by the rotating dynamic high-pressure silicon stack of motor in motor drive mechanism, and then changes the polarity of high voltage silicon rectifier stack.The present invention can carry out full-automatic polar exchanging boosting rectifier control to any surge generator, and the outside is without high pressure, applicable to any impulse voltage generator, has advantages of high efficiency, safe reliability is strong, space hold is little.
Technical scheme of the present invention is:
A kind of automatic polarity DC boosting device, comprise electric unit, bushing, high voltage silicon rectifier stack, low-pressure side binding post and high-low pressure winding, wherein the high-low pressure winding comprises high pressure winding and low pressure winding, high voltage silicon rectifier stack is that the high voltage silicon rectifier stack by two same sizes is composed in series, it is characterized in that: it also comprises motor drive mechanism and insulated transmission connecting rod, by the rotating of motor in motor drive mechanism, can drive high voltage silicon rectifier stack and rotate.
Automatic polarity DC boosting device as above is characterized in that: the described bushing outside is umbrella skirt construction.
Automatic polarity DC boosting device as above is characterized in that: described bushing interior metal part and electric connecting member are all used spherical all pressures measure to process.
Arbitrary automatic polarity DC boosting device as above is characterized in that: between described high-low pressure winding mesohigh winding and low pressure winding, the electrostatic screening layer is arranged, the high pressure winding is semi-insulating structure, and an end is ground-electrode, and the other end is high-field electrode.
Arbitrary automatic polarity DC boosting device as above is characterized in that: described two high voltage silicon rectifier stack mid points are connected on high-pressure side, and a silicon stack positive pole and another silicon stack negative pole are connected on outside electric equipment through bushing respectively.
Automatic polarity DC boosting device as above is characterized in that: described high-low pressure winding, bushing and high voltage silicon rectifier stack are placed in fuel tank.
The invention has the beneficial effects as follows: after adopting this device, can carry out full-automatic polar exchanging boosting rectifier control to any surge generator, and the outside, without high pressure, is conducive to scene and closely debugs and fault diagnosis, can provide efficient, safe and reliable experimental technique support to high-tension apparatus.
The accompanying drawing explanation
Fig. 1 is the theory diagram of the automatic polarity DC boosting device of the embodiment of the present invention.
Fig. 2 is the electric unit control principle drawing of the embodiment of the present invention.
Embodiment
Description of reference numerals:
1-electric unit, 2-bushing, 3-high voltage silicon rectifier stack, 4-low-pressure side binding post, 5-high-low pressure winding, motor drive mechanism 6, insulated transmission connecting rod 7.
Below in conjunction with drawings and Examples, the present invention is described further.
As shown in Figure 1, be to utilize automatic polarity DC boosting device to carry out the automatic polarity pressure build-up test to the high height above sea level ready-package of 4000kV surge voltage generating means.
The automatic polarity DC boosting device that the embodiment of the present invention provides, comprise electric unit 1, bushing 2, high voltage silicon rectifier stack 3, low-pressure side binding post 4 and high-low pressure winding 5, wherein high-low pressure winding 5 comprises high pressure winding and low pressure winding, high voltage silicon rectifier stack 3 is that the high voltage silicon rectifier stack by two same sizes is composed in series, high voltage silicon rectifier stack 3 is connected by insulated transmission connecting rod 7 with motor drive mechanism 6, rotating by motor in motor drive mechanism 6, can drive high voltage silicon rectifier stack 3 and rotate, and then change the polarity of high voltage silicon rectifier stack 3.
Between high-low pressure winding 5 mesohigh windings of the present invention and low pressure winding, the electrostatic screening layer is arranged.The high pressure winding is semi-insulating structure, and an end is ground-electrode, and the other end is high-field electrode.High voltage silicon rectifier stack 3 is connected by two high voltage silicon rectifier stacks, and mid point is connected on this device high-pressure side.A silicon stack positive pole and another silicon stack negative pole are connected on outside electric equipment through bushing 2 respectively, in the half-wave rectification mode, export the opposite polarity high direct voltage of two-way.High-low pressure winding 5 of the present invention, bushing 2 and high voltage silicon rectifier stack 3 preferably are placed in fuel tank, and this has just just realized the auto polarity translation function exposed without high voltage,
As shown in Figure 1, described automatic polarity increasing apparatus be by 0～380V voltage source by low pressure winding and high pressure winding, boost to 0～138kV, by high voltage silicon rectifier stack 3 by 0～138kV voltage commutation, convert 0 to～± the 150kV voltage signal.By bushing 2, high pressure directly is transferred to and is specified on electric equipment by high-tension cable, reach the purpose of the device outside without high pressure.Bushing 2 outsides all adopt the full skirt design, increased the surperficial creep distance of bushing 2, it is interior by High voltage output that high-tension cable is directly installed on bushing 2, bushing 2 interior metal parts and electric connecting member are all used spherical all pressures measure to process, the device internal electric intensity is weakened greatly, and whole branch casing is arranged in fuel tank, reduced insulation distance, reduced device own vol and floor area., press the polarity switching button and all can make motor drive mechanism 6 rotate until arrive the exact connect ion position of high voltage silicon rectifier stack towards corresponding direction not at correct link position or be not the polarity chron of testing requirements when high voltage silicon rectifier stack 3.While arriving its exact connect ion position, corresponding spacing controlled switch is cut off the electricity supply and is provided feedback signal, makes mechanism out of service.
As shown in Figure 2, be automatic polarity DC boosting device connection electric unit 1 schematic diagram of the embodiment of the present invention.KA1, KA2 are interlock relay, and SB1 is the positive polarity button, and SB2 is the negative polarity button, and SQ2 is the positive polarity limit switch, SQ1 is the negative polarity limit switch, and H0 is power light, and H1 is the forward pilot lamp, H1-is the positive polarity pilot lamp, and H2 is the forward pilot lamp, and H2-is the positive polarity pilot lamp.
When high voltage silicon rectifier stack 3 during in the positive polarity position, the action of SQ2 limit switch, the work of H1-positive polarity pilot lamp, the SB1 loop is off-state.While as need transposing polarity, being negative polarity, press the SB2 button, by KA1, assist normally closed contact to make the KA2 action, the SB1 loop is in open circuit, the work of H2 lamp, make electric motor starting reversion, when high voltage silicon rectifier stack 3 goes to the negative polarity position, limit switch SQ1 action, the work of H2-lamp, the SB2 loop disconnects, and motor quits work, and reaches the purpose of the reverse of polarity.When high voltage silicon rectifier stack 3 need be changed as positive polarity in the negative polarity position, same on principle of work.
When high voltage silicon rectifier stack 3 mediates, press SB1 or SB2 button, motor will start to rotate by instruction, after making high voltage silicon rectifier stack 3 forward assigned address to, corresponding limit switch work, pilot lamp work, motor stops operating.
Adopt automatic polarity DC boosting device of the present invention to be tested, comprise the steps:
Check that whether site safety measure and this device wiring be correct, check whether ground wire connects fully;
The access power supply, examine the on-the-spot rear pressurization of preparing of installing;
Set charging voltage, carry out pressure build-up test, if test waveform does not meet standard-required, after step-down ground connection, adjust polarity; As test waveform meets standard-required, setting voltage carries out impulse test to test product.
Utilize above-mentioned debug results to carry out impulse test, eight split conductors are mutually carried out 40 groups of both positive and negative polarity and switch in turn and carry out impulse test in the gaps, ground, 40 groups of test waveforms all meet the GB requirement.
Claims (6)
1. an automatic polarity DC boosting device, comprise electric unit, bushing, high voltage silicon rectifier stack, low-pressure side binding post and high-low pressure winding, wherein the high-low pressure winding comprises high pressure winding and low pressure winding, high voltage silicon rectifier stack is that the high voltage silicon rectifier stack by two same sizes is composed in series, it is characterized in that: it also comprises motor drive mechanism and insulated transmission connecting rod, by the rotating of motor in motor drive mechanism, can drive high voltage silicon rectifier stack and rotate.
2. automatic polarity DC boosting device as claimed in claim 1, is characterized in that: outside described bushing, be umbrella skirt construction.
3. automatic polarity DC boosting device as claimed in claim 1 is characterized in that: described bushing interior metal part and electric connecting member are all used spherical all pressures measure to process.
4. arbitrary automatic polarity DC boosting device as described as claims 1 to 3, it is characterized in that: between described high-low pressure winding mesohigh winding and low pressure winding, the electrostatic screening layer is arranged, the high pressure winding is semi-insulating structure, and an end is ground-electrode, and the other end is high-field electrode.
5. arbitrary automatic polarity DC boosting device as described as claims 1 to 3, it is characterized in that: described two high voltage silicon rectifier stack mid points are connected on high-pressure side, and a silicon stack positive pole and another silicon stack negative pole are connected on outside electric equipment through bushing respectively.
6. arbitrary automatic polarity DC boosting device as described as claims 1 to 3, it is characterized in that: described high-low pressure winding, bushing and high voltage silicon rectifier stack are placed in fuel tank.
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| CN201310350258XA CN103424583A (en) | 2013-08-13 | 2013-08-13 | Automatic polarity-changing direct current boosting device |
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| CN201310350258XA CN103424583A (en) | 2013-08-13 | 2013-08-13 | Automatic polarity-changing direct current boosting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203809A (en) * | 2014-08-30 | 2015-12-30 | 扬州市鑫源电气有限公司 | Test power supply apparatus of alternating current and direct current pollution test |
| CN105680685A (en) * | 2014-11-20 | 2016-06-15 | 江苏启源雷宇电气科技有限公司 | Novel polarity-change charging transformer for impulse voltage generator |
| CN110927531A (en) * | 2019-05-09 | 2020-03-27 | 北京华天机电研究所有限公司 | Polarity reversing circuit for polarity reversing test of capacitor |
| CN113552433A (en) * | 2021-07-21 | 2021-10-26 | 国网河南省电力公司直流运检分公司 | Method for measuring polarity of extra-high voltage transformer bushing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203809A (en) * | 2014-08-30 | 2015-12-30 | 扬州市鑫源电气有限公司 | Test power supply apparatus of alternating current and direct current pollution test |
| CN105680685A (en) * | 2014-11-20 | 2016-06-15 | 江苏启源雷宇电气科技有限公司 | Novel polarity-change charging transformer for impulse voltage generator |
| CN110927531A (en) * | 2019-05-09 | 2020-03-27 | 北京华天机电研究所有限公司 | Polarity reversing circuit for polarity reversing test of capacitor |
| CN113552433A (en) * | 2021-07-21 | 2021-10-26 | 国网河南省电力公司直流运检分公司 | Method for measuring polarity of extra-high voltage transformer bushing |
| CN113552433B (en) * | 2021-07-21 | 2022-08-09 | 国网河南省电力公司直流运检分公司 | Method for measuring CT polarity of extra-high voltage transformer bushing |
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Application publication date: 20131204 |