CN104422857A - 110 KV vehicle-mounted magnetic power frequency resonance test transformer and working method thereof - Google Patents
110 KV vehicle-mounted magnetic power frequency resonance test transformer and working method thereof Download PDFInfo
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- CN104422857A CN104422857A CN201310377336.5A CN201310377336A CN104422857A CN 104422857 A CN104422857 A CN 104422857A CN 201310377336 A CN201310377336 A CN 201310377336A CN 104422857 A CN104422857 A CN 104422857A
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Abstract
The invention discloses a 110 KV vehicle-mounted magnetic power frequency resonance test transformer. The transformer comprises a 380V plug, a power supply control device, a ferroresonant transformer, a capacitive voltage divider and two boost transformer units. The two boost transformer units and the ferroresonant transformer are sequentially overlapped, from top to bottom, at the middle portion of an installation chassis. The power supply control device is arranged on one side of the installation chassis, the ferroresonant transformer is in series connection with the two boost transformer units, and the capacitive voltage divider is arranged on the other side of the installation chassis. The invention also discloses a working method of the transformer. The 110 KV vehicle-mounted type magnetic power frequency resonance test transformer has reasonable and skillful structure design that the two boost transformer units and the ferroresonant transformer are overlappedly arranged, so that the size of the transformer is effectively minimized, the mobility of the transformer is high, the transformer can be easily mounted in a vehicle, and therefore the transformer is convenient to operate and use. The working method provided by the invention has the advantages that the steps are concise, the operation is convenient, realization is easy, the working efficiency is effectively improved, and wide popularization and application are facilitated.
Description
Technical field
The present invention relates to magnetic double purpose transformer for line-frequency resonance test technical field, particularly a kind of 110kV vehicular magnetic double purpose transformer for line-frequency resonance test and method of work thereof.
Background technology
Testing transformer is mainly used in carrying out withstand voltage test to electrical equipment or device, to find out insulation defect or the hidden danger of test specimen.In withstand voltage test process, the insulation that trial voltage is added in test specimen can produce capacitive reactive power electric current, and the larger test current of ground capacitance of test specimen is also larger, and the power of needs is also larger.Therefore the load of testing transformer is pure capacitive reactive power load.For the power equipment of bulky capacitor value as crosslinked polyethylene mesolow/high pressure/EHV XLPE power cable (XLPE), totally-enclosed high-voltage combined electrical apparatus (GIS), generator unit stator, high-power transformer, overhead power line, power capacitor etc., common low-tension supply cannot meet the requirement of capacity of experiment.Because testing transformer institute on-load is all capacitive reactive power, therefore can by the capacity providing the identical idle way compensated of perception to reduce power supply.When use reactor makes its reactance value equal with test product capacitor value, if reactor is connected with test product, form series resonance test loop, if reactor is in parallel with test product, form parallel resonance test loop, when there is resonance, the perception of reactor is idle to be offset completely with the capacitive reactive power of test product, power supply only needs to provide very little active power, Resonance Voltage Withstand Test technology that Here it is.According to the difference of reactance value regulative mode, Resonance Voltage Withstand Test technology has variable-frequency series-resonance transformer, machinery adjusts gap to adjust sense industrial frequency resonance transformer and magnetic industrial frequency resonance transformer etc.
Existing testing transformer is bulky, complex structure, and volume is heavy, and poor mobility, can not fill and use onboard, and use neither be very convenient.
Summary of the invention
For above-mentioned deficiency, one of the object of the invention is, provide a kind of reasonable in design, ingenious, volume is little, easy to use and be convenient to the 110kV vehicular magnetic double purpose transformer for line-frequency resonance test of movement.
The present invention also aims to, a kind of method of work of above-mentioned 110kV vehicular magnetic double purpose transformer for line-frequency resonance test is provided.
For achieving the above object, the technical scheme provided is in the present invention:
A kind of 110kV vehicular magnetic double purpose transformer for line-frequency resonance test, it comprises 380V plug, power control, ferroresonance transformer, capacitive divider and two boostings become unit, two boostings become unit by stacked successively by order from top to bottom with ferroresonance transformer, and be arranged on the centre position of installing underframe, described power control is arranged on this installation underframe side, and be connected with described ferroresonance transformer, this ferroresonance transformer and two boosts and becomes units in series, described capacitive divider is arranged on the opposite side installing underframe, and this capacitive divider boosts with two respectively and becomes unit and be connected with test product.
As a modification of the present invention, the monitoring backstage that described power control comprises power controling box and is connected with this power controling box, this power controling box is arranged on described installation underframe.
As a modification of the present invention, the two side symmetry of described installation underframe is respectively provided with vehicle-mounted erecting device, this vehicle-mounted erecting device comprises mount pad, upper silicone gasket, lower silicone gasket, screw and nut, described mount pad comprise horizontal part and with the vertical component effect be vertically connected on this horizontal part, this vertical component effect is provided with fixed orifice, and the mating hole suitable with this fixed orifice is provided with on described installation underframe, described horizontal part is provided with mounting hole, described upper silicone gasket is arranged on the upper end of this mounting hole, described lower silicone gasket is arranged on the lower end of this mounting hole, described screw inserts in mounting hole, and run through described upper silicone gasket and lower silicone gasket successively, described nut revolves and is located on screw.
A method of work for above-mentioned 110kV vehicular magnetic double purpose transformer for line-frequency resonance test, it comprises the following steps:
(1) ferroresonance transformer is arranged on the centre position of installing underframe;
(2) two boostings are become unit to be stacked in successively on this ferroresonance transformer, and adopt series system to be connected;
(3) power control is arranged on this installation underframe side, this power control is connected with 380V plug and ferroresonance transformer;
(4) when needing 110kV to test, the high-voltage connection of unit extraction for being connected with test product is become from the boosting being positioned at tip position;
Maybe when needing 55kV to test, become the high-voltage connection of unit extraction for being connected with test product from the boosting being positioned at centre position, and the boosting that will be positioned at tip position becomes the leading-out terminal ground connection of unit;
(5) described capacitive divider is arranged on the opposite side installing underframe, and is connected with described high-voltage connection;
(6) be arranged on automobile by installation underframe, then energising is tested.
As a modification of the present invention, during 55kV test, test current can be twice.
As a modification of the present invention, 110kV vehicular magnetic double purpose transformer for line-frequency resonance test stream time under rated current is 90min, and under 1.2 times of rated current, stream time is 10min.
As a modification of the present invention, between described high-voltage connection and high-voltage connection, use insulating bar temporary support.
As a modification of the present invention, described installation underframe is arranged on automobile by vehicle-mounted erecting device, this vehicle-mounted erecting device is symmetricly set on the two side of described installation underframe, this vehicle-mounted erecting device comprises mount pad, upper silicone gasket, lower silicone gasket, screw and nut, described mount pad comprise horizontal part and with the vertical component effect be vertically connected on this horizontal part, this vertical component effect is provided with fixed orifice, and the mating hole suitable with this fixed orifice is provided with on described installation underframe, described horizontal part is provided with mounting hole, described upper silicone gasket is arranged on the upper end of this mounting hole, described lower silicone gasket is arranged on the lower end of this mounting hole, described screw inserts in mounting hole, and run through described upper silicone gasket and lower silicone gasket successively, described nut revolves and is located on screw.
Beneficial effect of the present invention is: the reasonable in design of 110kV vehicular magnetic double purpose transformer for line-frequency resonance test provided by the invention, ingenious at mutually stacked with ferroresonance transformer for two boosting change unit, effective reduced volume, movability is strong, be easy to install onboard, easy to operate and use; The step of method of work provided by the invention is succinct, easy to operate, is easy to realize, effectively increases work efficiency, be beneficial to wide popularization and application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the vehicle-mounted erecting device structural representation in the present invention.
Fig. 3 is the wiring schematic diagram of the present invention when 55kV tests.
Fig. 4 is the wiring schematic diagram of the present invention when 110kV tests.
Fig. 5 is the fundamental diagram that magnetic resonance becomes.
Fig. 6 is that magnetic adjusts sense schematic diagram.
Embodiment
Embodiment: see Fig. 1, the embodiment of the present invention provides a kind of 110kV vehicular magnetic double purpose transformer for line-frequency resonance test, it comprises 380V plug 1, power control 2, ferroresonance transformer 3, capacitive divider 4 and two boostings become unit 5, two boostings become unit by stacked successively by order from top to bottom with ferroresonance transformer 3, and be arranged on the centre position of installing underframe 7, described power control 2 is arranged on this installation underframe 7 side, and be connected with described ferroresonance transformer 3, this ferroresonance transformer 3 and two boosts and becomes unit 5 and connect, described capacitive divider 4 is arranged on the opposite side installing underframe 7, and this capacitive divider 4 boosts with two respectively and becomes unit 5 and be connected with test product 6.
The monitoring backstage 22 that described power control 2 comprises power controling box 21 and is connected with this power controling box 21, this power controling box 21 is arranged on described installation underframe 7.
The two side symmetry of described installation underframe 7 is respectively provided with vehicle-mounted erecting device 8, this vehicle-mounted erecting device 8 comprises mount pad 81, upper silicone gasket 82, lower silicone gasket 83, screw 84 and nut 86, described mount pad 81 comprise horizontal part and with the vertical component effect be vertically connected on this horizontal part, this vertical component effect is provided with fixed orifice 87, and the mating hole suitable with this fixed orifice 87 is provided with on described installation underframe, described horizontal part is provided with mounting hole 85, described upper silicone gasket 82 is arranged on the upper end of this mounting hole 85, described lower silicone gasket 83 is arranged on the lower end of this mounting hole 85, described screw 84 inserts in mounting hole 85, and run through described upper silicone gasket 82 and lower silicone gasket 83 successively, described nut 86 revolves and is located on screw 84.
A method of work for above-mentioned 110kV vehicular magnetic double purpose transformer for line-frequency resonance test, it comprises the following steps:
(1) ferroresonance transformer 3 is arranged on the centre position of installing underframe 7;
(2) two boostings are become unit 5 to be stacked in successively on this ferroresonance transformer 3, and adopt series system to be connected;
(3) power control 2 is arranged on this installation underframe 7 side, this power control 2 is connected with 380V plug 1 and ferroresonance transformer 3;
(4) when needing 110kV to test, see Fig. 4, the high-voltage connection for being connected with test product 6 is drawn from the boosting change unit 5 being positioned at tip position;
Maybe when needing 55kV to test, see Fig. 3, draw the high-voltage connection for being connected with test product 6 from the boosting change unit 5 being positioned at centre position, and the boosting that will be positioned at tip position becomes the leading-out terminal ground connection of unit 5;
(5) described capacitive divider 4 is arranged on the opposite side installing underframe 7, and is connected with described high-voltage connection;
(6) be arranged on automobile by installation underframe 7, then energising is tested.
During 55kV test, test current can be twice.
110kV vehicular magnetic double purpose transformer for line-frequency resonance test stream time under rated current is 90min, and under 1.2 times of rated current, stream time is 10min.Effective lifting overload protection ability, and then reduce maintenance cost, ensure the stability of work, greatly increase the service life.
Insulating bar temporary support is used between described high-voltage connection and high-voltage connection.Avoid breaking phenomena, ensure normally to work.
Described installation underframe 7 is arranged on automobile by vehicle-mounted erecting device 8, this vehicle-mounted erecting device 8 is symmetricly set on the two side of described installation underframe, this vehicle-mounted erecting device 8 comprises mount pad 81, upper silicone gasket 82, lower silicone gasket 83, screw 84 and nut 86, described mount pad 81 comprise horizontal part and with the vertical component effect be vertically connected on this horizontal part, this vertical component effect is provided with fixed orifice 87, and the mating hole suitable with this fixed orifice 87 is provided with on described installation underframe, described horizontal part is provided with mounting hole 85, described upper silicone gasket 82 is arranged on the upper end of this mounting hole 85, described lower silicone gasket 83 is arranged on the lower end of this mounting hole 85, described screw 84 inserts in mounting hole 85, and run through described upper silicone gasket 82 and lower silicone gasket 83 successively, described nut 86 revolves and is located on screw 84.
During use, by the upper silicone gasket 82 in vehicle-mounted erecting device 8 and lower silicone gasket 83, installation underframe 7 can be made not carry out very stiff and demanding connection with the vehicle-mounted bracket on car body, effectively irregular by what produce in car stroke, continuous vibration is effectively kept apart with installation underframe 7, good stability, make the impact that installation underframe 7 shakes from high strength, efficiently solve and underframe 7 is installed, power control 2, ferroresonance transformer 3, capacitive divider 4 and two boostings become the reliable use of unit 5 in high strength vibrations vehicle operating process, greatly improve the adaptive capacity to environment of 110kV vehicular magnetic double purpose transformer for line-frequency resonance test, stability in use and serviceable life, the accuracy of warranty test.
The step of method of work provided by the invention is succinct, easy to operate, is easy to realize, effectively increases work efficiency, be beneficial to wide popularization and application.
The reasonable in design of 110kV vehicular magnetic double purpose transformer for line-frequency resonance test provided by the invention, ingenious at mutually stacked with ferroresonance transformer 3 for two boosting change unit 5, effective reduced volume, movability is strong, is easy to install onboard, easy to operate and use; Dexterously step-up transformer and REgulatable reactor are integrated simultaneously, the basis of conventional test transformer adds DC magnetic biasing controlling functions to transformer core, by making the capacitive reactance of the excitation impedance of transformer and test product 6 realize parallel resonance to the DC magnetic biasing of iron core.The advantage of this method of work is resonance under power frequency, mechanical rotating machinery, non-maintaining, easy to use, and boosting easily.
See Fig. 5, it is the fundamental diagram that magnetic resonance becomes.For common transformer, excitation impedance X
mvery large, exciting current I
mvery little, test current I
xsubstantially all mains side is flowed into, i.e. I by transformer voltage ratio
o≈ I
x(I
xconversion is to mains side).If change magnetic permeability unshakable in one's determination by DC magnetic biasing, then X
mdecline, I
mincrease, work as I
m=-I
xtime, I
o≈ 0, be now the excitation induction reactance formation parallel resonance equal to test product 6 capacitive reactance of transformer, output power of power supply only has active power.Therefore in fact magnetic resonance becomes is exactly the adjustable testing transformer of a kind of excitation impedance.
See Fig. 6, for magnetic adjusts sense schematic diagram, by pressure regulator D and magnetic transformer high pressure winding W
2there is provided the trial voltage needed for test product 6, feedback transformer Tf and rectifier are by test current I
xfield copper W is injected after converting DC current by a certain percentage to
dto DC magnetic biasing unshakable in one's determination, control DC current size by the no-load voltage ratio adjusting feedback transformer and make AC excitation electric current and test current I
xequal, after exchanging perceptual exciting current and compatibility test current canceling, source current is only left active current.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in claims of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the present invention.As described in the above embodiment the present invention, step same or analogous with it or structure is adopted and other transformer obtained and method of work thereof, all in scope.
Claims (8)
1. a 110kV vehicular magnetic double purpose transformer for line-frequency resonance test, it is characterized in that, it comprises 380V plug, power control, ferroresonance transformer, capacitive divider and two boostings become unit, two boostings become unit by stacked successively by order from top to bottom with ferroresonance transformer, and be arranged on the centre position of installing underframe, described power control is arranged on this installation underframe side, and be connected with described ferroresonance transformer, this ferroresonance transformer and two boosts and becomes units in series, described capacitive divider is arranged on the opposite side installing underframe, and this capacitive divider boosts with two respectively and becomes unit and be connected with test product.
2. 110kV vehicular magnetic double purpose transformer for line-frequency resonance test according to claim 1, it is characterized in that, the monitoring backstage that described power control comprises power controling box and is connected with this power controling box, this power controling box is arranged on described installation underframe.
3. 110kV vehicular magnetic double purpose transformer for line-frequency resonance test according to claim 1 and 2, it is characterized in that, the two side symmetry of described installation underframe is respectively provided with vehicle-mounted erecting device, this vehicle-mounted erecting device comprises mount pad, upper silicone gasket, lower silicone gasket, screw and nut, described mount pad comprise horizontal part and with the vertical component effect be vertically connected on this horizontal part, this vertical component effect is provided with fixed orifice, and the mating hole suitable with this fixed orifice is provided with on described installation underframe, described horizontal part is provided with mounting hole, described upper silicone gasket is arranged on the upper end of this mounting hole, described lower silicone gasket is arranged on the lower end of this mounting hole, described screw inserts in mounting hole, and run through described upper silicone gasket and lower silicone gasket successively, described nut revolves and is located on screw.
4. a method of work for one of claim 1-3 described 110kV vehicular magnetic double purpose transformer for line-frequency resonance test, it is characterized in that, it comprises the following steps:
(1) ferroresonance transformer is arranged on the centre position of installing underframe;
(2) two boostings are become unit to be stacked in successively on this ferroresonance transformer, and adopt series system to be connected;
(3) power control is arranged on this installation underframe side, this power control is connected with 380V plug and ferroresonance transformer;
(4) when needing 110kV to test, the high-voltage connection of unit extraction for being connected with test product is become from the boosting being positioned at tip position;
Maybe when needing 55kV to test, become the high-voltage connection of unit extraction for being connected with test product from the boosting being positioned at centre position, and the boosting that will be positioned at tip position becomes the leading-out terminal ground connection of unit;
(5) described capacitive divider is arranged on the opposite side installing underframe, and is connected with described high-voltage connection;
(6) be arranged on automobile by installation underframe, then energising is tested.
5. method of work according to claim 4, is characterized in that, during 55kV test, test current can be large 1 times.
6. method of work according to claim 4, is characterized in that, 110kV vehicular magnetic double purpose transformer for line-frequency resonance test stream time under rated current is 90min, and under 1.2 times of rated current, stream time is 10min.
7. method of work according to claim 4, is characterized in that, uses insulating bar temporary support between described high-voltage connection and high-voltage connection.
8. method of work according to claim 4, it is characterized in that, described installation underframe is arranged on automobile by vehicle-mounted erecting device, this vehicle-mounted erecting device is symmetricly set on the two side of described installation underframe, this vehicle-mounted erecting device comprises mount pad, upper silicone gasket, lower silicone gasket, screw and nut, described mount pad comprise horizontal part and with the vertical component effect be vertically connected on this horizontal part, this vertical component effect is provided with fixed orifice, and the mating hole suitable with this fixed orifice is provided with on described installation underframe, described horizontal part is provided with mounting hole, described upper silicone gasket is arranged on the upper end of this mounting hole, described lower silicone gasket is arranged on the lower end of this mounting hole, described screw inserts in mounting hole, and run through described upper silicone gasket and lower silicone gasket successively, described nut revolves and is located on screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377336.5A CN104422857A (en) | 2013-08-27 | 2013-08-27 | 110 KV vehicle-mounted magnetic power frequency resonance test transformer and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377336.5A CN104422857A (en) | 2013-08-27 | 2013-08-27 | 110 KV vehicle-mounted magnetic power frequency resonance test transformer and working method thereof |
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| CN104422857A true CN104422857A (en) | 2015-03-18 |
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|---|---|---|---|
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|---|---|---|---|---|
| CN85203059U (en) * | 1985-07-20 | 1986-09-24 | 广东省电力工业局试验研究所 | Adjustable reactor |
| CN87205208U (en) * | 1987-10-19 | 1988-07-06 | 国营宏明无线电器材厂 | Test apparatus for electric pressure-proof of a.c. capacitor |
| CN101403784A (en) * | 2008-11-17 | 2009-04-08 | 中冶东北建设有限公司电气安装工程公司 | AC frequency conversion resonance vibration pressure-proof novel method for AC motor stator winding |
| CN101833059A (en) * | 2009-12-04 | 2010-09-15 | 青岛菲特电器科技有限公司 | Industrial frequency resonance transformer |
| CN202748440U (en) * | 2012-03-21 | 2013-02-20 | 丁晓东 | Vehicular variable-frequency resonant withstand-voltage testing apparatus |
-
2013
- 2013-08-27 CN CN201310377336.5A patent/CN104422857A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203059U (en) * | 1985-07-20 | 1986-09-24 | 广东省电力工业局试验研究所 | Adjustable reactor |
| CN87205208U (en) * | 1987-10-19 | 1988-07-06 | 国营宏明无线电器材厂 | Test apparatus for electric pressure-proof of a.c. capacitor |
| CN101403784A (en) * | 2008-11-17 | 2009-04-08 | 中冶东北建设有限公司电气安装工程公司 | AC frequency conversion resonance vibration pressure-proof novel method for AC motor stator winding |
| CN101833059A (en) * | 2009-12-04 | 2010-09-15 | 青岛菲特电器科技有限公司 | Industrial frequency resonance transformer |
| CN202748440U (en) * | 2012-03-21 | 2013-02-20 | 丁晓东 | Vehicular variable-frequency resonant withstand-voltage testing apparatus |
Non-Patent Citations (1)
| Title |
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| 孙冬娥等: "智能型并联谐振交直流耐压试验装置的研制", 《现代电子技术》 * |
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Application publication date: 20150318 |