CN207380190U - A kind of iron core reactor turn-to-turn defect tests circuit - Google Patents
A kind of iron core reactor turn-to-turn defect tests circuit Download PDFInfo
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- CN207380190U CN207380190U CN201721541005.0U CN201721541005U CN207380190U CN 207380190 U CN207380190 U CN 207380190U CN 201721541005 U CN201721541005 U CN 201721541005U CN 207380190 U CN207380190 U CN 207380190U
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- 238000012360 testing method Methods 0.000 title claims abstract description 84
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 230000007547 defect Effects 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims 2
- 238000009413 insulation Methods 0.000 abstract description 18
- 238000004804 winding Methods 0.000 abstract description 15
- 238000002474 experimental method Methods 0.000 abstract description 8
- 238000010998 test method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of iron core reactor turn-to-turn defects to test circuit, solves existing iron core reactor turn-to-turn defect testing method, including lightning impulse test, impulse hunting pressure test etc., wherein, the result of lightning impulse test is related with the turn insulation of iron core reactor, but winding can only be examined into ripple end, and test voltage is far above industrial frequency withstand voltage peak value, result in the technical issues of lightning impulse test can not effectively test the turn-to-turn defect in the middle part of iron core reactor winding, impulse hunting pressure test is detected available for air reactor turn insulation, however iron core reactor is since there are the number of turn is less and the problems such as core sataration, turn insulation experiment can not use the test method of air reactor, result in the technical issues of can not ensureing core sataration not to occur under 2 times of fundamental wave rated voltages.
Description
Technical field
The present invention relates to field of power detection more particularly to a kind of iron core reactor turn-to-turn defect test circuits.
Background technology
Iron core reactor is primary equipment important in power grid, and there is limiting short-circuit current, limiting capacitance device combination lock to gush
Stream, limitation small current neutral grounding electric current reduce the effects that capacity effect of nonloaded line.Since reactor is often other power equipments
Kit, usually run under without any protection, after reactor breaks down, could usually be found after burning.This
Very big hidden danger can be not only caused to the safe operation of power grid, can also be caused damages to electricity consumption enterprise.Wherein, iron core reactor
Caused by accident is mostly turn-to-turn defect, therefore it is very necessary periodically to carry out turn-to-turn defects detection to iron-core reactor in power grid
's.
Iron core reactor is different from transformer device structure, and each iron core only has single coil in iron core reactor, therefore can not
It is pressed as transformer by low pressure winding, senses corresponding test voltage value in high-voltage winding, it can only be directly in simplex winding
Upper application test voltage.
Existing iron core reactor turn-to-turn defect testing method, including lightning impulse test, impulse hunting pressure test etc.,
Wherein, the result of lightning impulse test and the turn insulation of iron core reactor are related, but winding can only be examined into ripple end, and
Test voltage is far above industrial frequency withstand voltage peak value, and the turn-to-turn in the middle part of iron core reactor winding can not be lacked by resulting in lightning impulse test
The technical issues of row is effectively test is trapped into, impulse hunting pressure test is detected available for air reactor turn insulation, however iron
Core reactor is since there are the number of turn is less and the problems such as core sataration, turn insulation experiment can not use the experiment of air reactor
Mode results in the technical issues of can not ensureing core sataration not to occur under 2 times of fundamental wave rated voltages.
The content of the invention
The present invention provides a kind of iron core reactor turn-to-turn defects to test circuit, for solving existing iron core reactor circle
Between defect testing method, including lightning impulse test, impulse hunting pressure test etc., wherein, the result of lightning impulse test with
The turn insulation of iron core reactor is related, but winding can only be examined into ripple end, and test voltage is far above industrial frequency withstand voltage peak
Value, the technology that the turn-to-turn defect in the middle part of iron core reactor winding can not effectively be test by resulting in lightning impulse test are asked
Topic, impulse hunting pressure test is detected available for air reactor turn insulation, however iron core reactor is due to less there are the number of turn
And the problems such as core sataration, turn insulation experiment can not use the test method of air reactor, resulting in can not ensure 2
Not the technical issues of core sataration does not occur under times fundamental wave rated voltage.
A kind of iron core reactor turn-to-turn defect test circuit provided by the invention, including：
Variable-frequency power sources module, high frequency high voltage transformer, reactor to be measured, data acquisition module, high-voltage bleeder, compensation electricity
Container, the first current sensor and the second current sensor；
The input terminal of the variable-frequency power sources module is electrically connected with mains supply inlet wire, the output terminal of the variable-frequency power sources module
It is electrically connected with the one side of the high frequency high voltage transformer, for exporting the frequency conversion test voltage of predeterminated frequency to the high-frequency and high-voltage
Transformer；
First end of the opposite side of the high frequency high voltage transformer respectively with the reactor to be measured is electrically connected, for applying
Test voltage value is preset to the reactor to be measured, wherein, connecting node is first node, the second end of the reactor to be measured
It is connected with the ground potential of circuit；
One end of the compensation capacitor is connected with the first node, the other end of the compensating electric capacity and the ground of circuit
Current potential connects；
The input terminal of the high-voltage bleeder is connected on the first node；
First current sensor and second current sensor are separately positioned on described the first of reactor to be measured
On end and the second end；
The data acquisition module is electrically connected with the output terminal of the high-voltage bleeder, for getting the high-frequency and high-voltage
The output voltage values of transformer；
The data acquisition module is electrically connected respectively with first current sensor and second current sensor, is used
In getting the test current waveform on the reactor to be measured.
Preferably, threephase switch, the threephase switch are connected to the mains supply inlet wire and the variable-frequency power sources module
Input terminal between.
Preferably, the high-voltage bleeder includes：
First resistor, second resistance, the first capacitance and the second capacitance；
The first resistor and first capacitance are in parallel, form the first bleeder circuit；
The second resistance and second capacitance are in parallel, form the second bleeder circuit；
One end of first bleeder circuit is connected with one end of second bleeder circuit, wherein, connecting node
Two nodes；
The other end of first bleeder circuit is the input terminal of the high-voltage bleeder, and the section point is the height
The output terminal of divider is pressed, the other end of second bleeder circuit and the ground potential of circuit connect.
Preferably, further include：First delay impedance and the second delay impedance；
First delay impedance is connected between first current sensor and the data acquisition module, and described
Two delay impedances are connected between second current sensor and the data acquisition module.
Preferably, further include：
3rd delay impedance；
3rd delay impedance is connected between the output terminal of the high-voltage bleeder and the data acquisition module.
As can be seen from the above technical solutions, the present invention has the following advantages：
A kind of iron core reactor turn-to-turn defect test circuit provided by the invention, including：Variable-frequency power sources module, high-frequency and high-voltage
Transformer, reactor to be measured, data acquisition module, high-voltage bleeder, compensation capacitor, the first current sensor and the second electric current
Sensor；The input terminal of the variable-frequency power sources module is electrically connected with mains supply inlet wire, the output terminal of the variable-frequency power sources module
It is electrically connected with the one side of the high frequency high voltage transformer, for exporting the frequency conversion test voltage of predeterminated frequency to the high-frequency and high-voltage
Transformer；First end of the opposite side of the high frequency high voltage transformer respectively with the reactor to be measured is electrically connected, for applying
Test voltage value is preset to the reactor to be measured, wherein, connecting node is first node, the second end of the reactor to be measured
It is connected with the ground potential of circuit；One end of the compensation capacitor is connected with the first node, the compensating electric capacity it is another
End is connected with the ground potential of circuit；The input terminal of the high-voltage bleeder is connected on the first node；First electric current
Sensor and second current sensor are separately positioned in the first end and the second end of reactor to be measured；It is described
Data acquisition module is electrically connected with the output terminal of the high-voltage bleeder, for getting the output of the high frequency high voltage transformer
Voltage value；The data acquisition module is electrically connected respectively with first current sensor and second current sensor, is used
In getting the test current waveform on the reactor to be measured.
It is surveyed the present invention provides a kind of using the iron core reactor turn-to-turn defect of power electronics frequency conversion and power conversion technology
Electrical verification road, using the frequency conversion test voltage of variable-frequency power sources module output predeterminated frequency to the high frequency high voltage transformer, variable-frequency electric
The frequency conversion test voltage of source module output predeterminated frequency boosts to test voltage value by high frequency high voltage transformer, and sets with treating
The compensation capacitor of reactor parallel connection is surveyed to compensate inductance current, reactor to be measured is arranged on to the high pressure of high frequency high voltage transformer
Side, the iron core for taking the reactor to be measured by improving Frequency Patterns do not occur saturation, solve current lightning impulse
The result of experiment is related with the turn insulation of iron core reactor, but winding can only be examined into ripple end, and test voltage is far high
In industrial frequency withstand voltage peak value, the turn-to-turn defect in the middle part of iron core reactor winding can not be carried out effectively by resulting in lightning impulse test
The technical issues of test, impulse hunting pressure test available for air reactor turn insulation detect, however iron core reactor due to
There are the number of turn is less and the problems such as core sataration, turn insulation experiment can not use the test method of air reactor, result in
The technical issues of can not ensureing core sataration not to occur under 2 times of fundamental wave rated voltages.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural representation of one embodiment that a kind of iron core reactor turn-to-turn defect provided by the invention tests circuit
Figure；
Wherein, reference numeral is as follows：
K1, threephase switch；M1, variable-frequency power sources module；T1, high frequency high voltage transformer；Lx, reactor to be measured；M2, data are adopted
Collect module；M3, high-voltage bleeder；C1, compensation capacitor；TA1, the first current sensor；TA2, the second current sensor；Z1、
First delay impedance；Z2, the second delay impedance；Z3, the 3rd delay impedance.
Specific embodiment
An embodiment of the present invention provides a kind of iron core reactor turn-to-turn defects to test circuit, solves existing iron core reactance
Device turn-to-turn defect testing method, including lightning impulse test, impulse hunting pressure test etc., wherein, the knot of lightning impulse test
Fruit is related with the turn insulation of iron core reactor, but winding can only be examined into ripple end, and test voltage is resistance to far above power frequency
Voltage crest value results in the skill that lightning impulse test can not effectively test the turn-to-turn defect in the middle part of iron core reactor winding
Art problem, impulse hunting pressure test is detected available for air reactor turn insulation, however iron core reactor is since there are the numbers of turn
The problems such as less and core sataration, turn insulation experiment can not use the test method of air reactor, and resulting in can not ensure
The technical issues of core sataration not occurring under 2 times of fundamental wave rated voltages.
Goal of the invention, feature, advantage to enable the present invention is more apparent and understandable, below in conjunction with the present invention
Attached drawing in embodiment is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that disclosed below
Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Scope.
Referring to Fig. 1, a kind of iron core reactor turn-to-turn defect test circuit provided in an embodiment of the present invention, including：
Variable-frequency power sources module M1, high frequency high voltage transformer T1, reactor Lx to be measured, data acquisition module M2, high pressure partial pressure
Device M3, compensation capacitor C1, the first current sensor TA1 and the second flow sensor TA2；
The input terminal of variable-frequency power sources module M1 is electrically connected with mains supply inlet wire, output terminal and the height of variable-frequency power sources module M1
The one side electrical connection of frequency high-tension transformer T1, for exporting the frequency conversion test voltage of predeterminated frequency to high frequency high voltage transformer T1；
During actual implementation, variable-frequency power sources module M1 can export the frequency conversion experiment electricity of specific frequency as needed
Pressure；
First end of the opposite side of high frequency high voltage transformer T1 respectively with reactor Lx to be measured is electrically connected, default for applying
Test voltage value to reactor Lx to be measured, wherein, connecting node is first node, the second end of reactor Lx to be measured and circuit
Ground potential connects；
Variable-frequency power sources module M1 is connected with high frequency high voltage transformer T1, and variable-frequency power sources module M1 exports the frequency conversion of specific frequency
Voltage boosts to test voltage value by high frequency high voltage transformer T1；
One end of compensation capacitor C1 is connected with first node, and the other end of compensating electric capacity and the ground potential of circuit connect；
Compensation capacitor C1 reduces the output of high frequency high voltage transformer T1 for the inductance current needed for reactor Lx to be measured
Electric current and capacity；
The input terminal of high-voltage bleeder M3 is connected on first node；
First current sensor TA1 and the second flow sensor TA2 is separately positioned on the first end and of reactor Lx to be measured
On two ends；
Data acquisition module M2 is electrically connected with the output terminal of high-voltage bleeder M3, for getting high frequency high voltage transformer T1
Output voltage values；
Data acquisition module M2 is electrically connected respectively with the first current sensor TA1 and the second flow sensor TA2, for obtaining
Test current waveform onto reactor Lx to be measured.
It is provided in an embodiment of the present invention a kind of using power electronics frequency conversion and the iron core reactor turn-to-turn of power conversion technology
Defect tests circuit, using the frequency conversion test voltage of variable-frequency power sources module M1 output predeterminated frequencies to high frequency high voltage transformer T1,
The frequency conversion test voltage of variable-frequency power sources module M1 output predeterminated frequencies boosts to test voltage value by high frequency high voltage transformer T1,
And the compensation capacitor C1 in parallel with reactor Lx to be measured is set to compensate inductance current, reactor Lx to be measured is arranged on high frequency
The high-pressure side of high-tension transformer T1, the iron core for taking the reactor Lx to be measured by improving Frequency Patterns are not satisfied
With it is related with the turn insulation of iron core reactor to solve the result of current lightning impulse test, but can only be to winding into ripple end
Examination, and test voltage, far above industrial frequency withstand voltage peak value, resulting in lightning impulse test can not be in iron core reactor winding
The technical issues of turn-to-turn defect in portion is effectively test, impulse hunting pressure test are examined available for air reactor turn insulation
It surveys, however iron core reactor is since there are the number of turn is less and the problems such as core sataration, turn insulation, which is tested, can not use hollow electricity
The test method of anti-device results in the technical issues of can not ensureing core sataration not to occur under 2 times of fundamental wave rated voltages.
The above are the descriptions that one embodiment to a kind of iron core reactor turn-to-turn defect test circuit carries out, below will be right
A kind of another embodiment of iron core reactor turn-to-turn defect test circuit is described in detail.
Referring to Fig. 1, a kind of iron core reactor turn-to-turn defect test circuit provided in an embodiment of the present invention, including：
Variable-frequency power sources module M1, high frequency high voltage transformer T1, reactor Lx to be measured, data acquisition module M2, high pressure partial pressure
Device M3, compensation capacitor C1, the first current sensor TA1 and the second flow sensor TA2；
The input terminal of variable-frequency power sources module M1 is electrically connected with mains supply inlet wire, output terminal and the height of variable-frequency power sources module M1
The one side electrical connection of frequency high-tension transformer T1, for exporting the frequency conversion test voltage of predeterminated frequency to high frequency high voltage transformer T1；
First end of the opposite side of high frequency high voltage transformer T1 respectively with reactor Lx to be measured is electrically connected, default for applying
Test voltage value to reactor Lx to be measured, wherein, connecting node is first node, the second end of reactor Lx to be measured and circuit
Ground potential connects；
One end of compensation capacitor C1 is connected with first node, and the other end of compensating electric capacity and the ground potential of circuit connect；
The input terminal of high-voltage bleeder M3 is connected on first node；
First current sensor TA1 and the second flow sensor TA2 is separately positioned on the first end and of reactor Lx to be measured
On two ends；
Data acquisition module M2 is electrically connected with the output terminal of high-voltage bleeder M3, for getting high frequency high voltage transformer T1
Output voltage values；
Data acquisition module M2 is electrically connected respectively with the first current sensor TA1 and the second flow sensor TA2, for obtaining
Test current waveform onto reactor Lx to be measured.
Further, further include：
Threephase switch K1, threephase switch K1 are connected between the input terminal of mains supply inlet wire and variable-frequency power sources module M1.
Mains supply inlet wire is connected with threephase switch K1, and threephase switch K1 will detect hookup to be isolated with power inleting terminal
It opens, for making hookup deenergization.
Further, high-voltage bleeder M3 includes：
First resistor, second resistance, the first capacitance and the second capacitance；
First resistor and the first capacitance are in parallel, form the first bleeder circuit；
Second resistance and the second capacitance are in parallel, form the second bleeder circuit；
One end of first bleeder circuit is connected with one end of the second bleeder circuit, wherein, connecting node is section point；
The other end of first bleeder circuit is the input terminal of high-voltage bleeder M3, and section point is the defeated of high-voltage bleeder M3
Outlet, the other end of the second bleeder circuit and the ground potential of circuit connect.
Further, further include：First delay impedance Z1 and the second delay impedance Z2；
First delay impedance Z1 is connected between the first current sensor TA1 and data acquisition module M2, the second delay resistance
Anti- Z2 is connected between the second flow sensor TA2 and data acquisition module M2.
Further, further include：
3rd delay impedance Z3；
3rd delay impedance Z3 is connected between the output terminal of high-voltage bleeder M3 and data acquisition module M2.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or carry out equivalent substitution to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is not made to depart from the spirit and scope of various embodiments of the present invention technical solution.
Claims (5)
1. a kind of iron core reactor turn-to-turn defect tests circuit, feature is, including：
Variable-frequency power sources module, high frequency high voltage transformer, reactor to be measured, data acquisition module, high-voltage bleeder, compensating electric capacity
Device, the first current sensor and the second current sensor；
The input terminal of the variable-frequency power sources module is electrically connected with mains supply inlet wire, the output terminal of the variable-frequency power sources module and institute
The one side electrical connection of high frequency high voltage transformer is stated, for exporting the frequency conversion test voltage of predeterminated frequency to the high-frequency and high-voltage transformation
Device；
First end of the opposite side of the high frequency high voltage transformer respectively with the reactor to be measured is electrically connected, default for applying
Test voltage value to the reactor to be measured, wherein, connecting node is first node, the second end of the reactor to be measured and electricity
The ground potential connection on road；
One end of the compensation capacitor is connected with the first node, the other end of the compensating electric capacity and the ground potential of circuit
Connection；
The input terminal of the high-voltage bleeder is connected on the first node；
First current sensor and second current sensor be separately positioned on reactor to be measured the first end and
In the second end；
The data acquisition module is electrically connected with the output terminal of the high-voltage bleeder, for getting the high-frequency and high-voltage transformation
The output voltage values of device；
The data acquisition module is electrically connected respectively with first current sensor and second current sensor, for obtaining
Get the test current waveform on the reactor to be measured.
2. iron core reactor turn-to-turn defect according to claim 1 tests circuit, which is characterized in that further includes：
Threephase switch, the threephase switch be connected to the mains supply inlet wire and the variable-frequency power sources module input terminal it
Between.
A kind of 3. iron core reactor turn-to-turn defect test circuit according to claim 2, which is characterized in that the high pressure point
Depressor includes：
First resistor, second resistance, the first capacitance and the second capacitance；
The first resistor and first capacitance are in parallel, form the first bleeder circuit；
The second resistance and second capacitance are in parallel, form the second bleeder circuit；
One end of first bleeder circuit is connected with one end of second bleeder circuit, wherein, connecting node is the second section
Point；
The other end of first bleeder circuit is the input terminal of the high-voltage bleeder, and the section point is the high pressure point
The output terminal of depressor, the other end of second bleeder circuit and the ground potential of circuit connect.
4. iron core reactor turn-to-turn defect according to claim 3 tests circuit, which is characterized in that further includes：First prolongs
When impedance and the second delay impedance；
First delay impedance is connected between first current sensor and the data acquisition module, and described second prolongs
When impedance be connected between second current sensor and the data acquisition module.
5. iron core reactor turn-to-turn defect according to claim 4 tests circuit, which is characterized in that further includes：
3rd delay impedance；
3rd delay impedance is connected between the output terminal of the high-voltage bleeder and the data acquisition module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541005.0U CN207380190U (en) | 2017-11-17 | 2017-11-17 | A kind of iron core reactor turn-to-turn defect tests circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541005.0U CN207380190U (en) | 2017-11-17 | 2017-11-17 | A kind of iron core reactor turn-to-turn defect tests circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207380190U true CN207380190U (en) | 2018-05-18 |
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|---|---|---|---|
| CN201721541005.0U Withdrawn - After Issue CN207380190U (en) | 2017-11-17 | 2017-11-17 | A kind of iron core reactor turn-to-turn defect tests circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748320A (en) * | 2017-11-17 | 2018-03-02 | 广东电网有限责任公司电力科学研究院 | A kind of iron-core reactor turn-to-turn defect test circuit and method |
| CN109507558A (en) * | 2019-01-14 | 2019-03-22 | 广东电网有限责任公司 | A kind of turn insulation defect positioning method, the apparatus and system of coil with iron core |
-
2017
- 2017-11-17 CN CN201721541005.0U patent/CN207380190U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748320A (en) * | 2017-11-17 | 2018-03-02 | 广东电网有限责任公司电力科学研究院 | A kind of iron-core reactor turn-to-turn defect test circuit and method |
| CN107748320B (en) * | 2017-11-17 | 2024-06-14 | 广东电网有限责任公司电力科学研究院 | Inter-turn defect testing circuit and method for iron core reactor |
| CN109507558A (en) * | 2019-01-14 | 2019-03-22 | 广东电网有限责任公司 | A kind of turn insulation defect positioning method, the apparatus and system of coil with iron core |
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