CN204009042U - A kind of calibration equipment that boosts for industrial frequency resonance test - Google Patents
A kind of calibration equipment that boosts for industrial frequency resonance test Download PDFInfo
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- CN204009042U CN204009042U CN201420426251.1U CN201420426251U CN204009042U CN 204009042 U CN204009042 U CN 204009042U CN 201420426251 U CN201420426251 U CN 201420426251U CN 204009042 U CN204009042 U CN 204009042U
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 description 9
- 241000580063 Ipomopsis rubra Species 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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Abstract
The utility model discloses a kind of calibration equipment that boosts for industrial frequency resonance test, comprise power frequency supply, the output terminal of described power frequency supply is connected with the former limit of exciting transformer, it is characterized in that, the first sampling unit that described power frequency supply also comprises tester and can gather electric current and voltage, the second sampling unit, the secondary of described exciting transformer in turn with REgulatable reactor, building-out capacitor is connected, the earth terminal of described building-out capacitor is connected with the first sampling unit, the earth terminal of the secondary of described exciting transformer is connected with the second sampling unit, described building-out capacitor two ends are parallel with respectively voltage transformer (VT) in standard potential transformer HeGIS transformer station, in described standard potential transformer HeGIS transformer station, voltage transformer (VT) is connected with tester respectively, in described GIS transformer station, voltage transformer (VT) is connected with voltage transformer (VT) Burden box.Convenient adjusting, simple to operate, meets the requirement of onsite moving, test.
Description
Technical field
The utility model relates to a kind of calibration equipment that boosts for industrial frequency resonance test, belongs to the technical field of transducer check.
Background technology
When the voltage transformer (VT) (capacitance type potential transformer) to long-distance cable line city NeiGIS transformer station (gas insulated transformer substation) carries out verification, can not be completely that voltage transformer (VT) is independent, with upper certain space-number, (interval is GIS structural term, generally the equipment in GIS is packed in interval, by a plurality of interval complete GIS) and the turnover cable bus of certain length, certain ground capacitance so just had.Existence due to GIS interval and turnover cable, when boosting, just there is capacitance current, and cable incoming-outgoing cross-sectional area specification is different, length differs and wiring arrangement is unified not to the utmost, has caused the uncertainty of GIS transformer substation voltage mutual inductor electric capacity in city.
Because electric capacity is uncertain, site test frequency must be carried out under the condition of 50Hz, simultaneously on-the-spot geographical conditions are complicated, traditional experimental provision is because large, the on-the-spot power taking difficulty of transformer capacity, also because volume is large, occupation of land is wide, placement cannot be realized in scene, be difficult to meet the requirement of onsite moving, test.Variable-frequency series-resonance can carry out AC boosting to GIS and cable class test product, operate also uncomplicated, but the verification of voltage transformer (VT) must under the power frequency of 50Hz, carry out, so frequency conversion resonance vibration can not be as its booster power.
In addition, while adopting traditional Regulation Control case as the control power supply of industrial frequency resonance test, tend to occur that resonance high-voltage is very level and smooth in first half section, and can sharply increase to resonance potential after a certain magnitude of voltage, we are referred to as this phenomenon resonance potential and skyrocket.Appearance voltage skyrockets and tends to surpass system real work voltage, may puncture test product or equipment, be quite dangerous, and traditional power frequency Regulation Control case is because cannot gather resonance high-voltage and be analyzed, be can not prejudge possibility to occur this situation, have potential safety hazard.
Utility model content
For the problems referred to above, the utility model provides a kind of calibration equipment that boosts for industrial frequency resonance test, and convenient adjusting, simple to operate, meets the requirement of onsite moving, test.Further, power frequency supply can acquisition test voltage, size and the phase differential of electric current, is convenient to judge whether resonance can reach test required voltage value, and whether resonant process occurs the voltage situation that skyrockets.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of calibration equipment that boosts for industrial frequency resonance test, comprise power frequency supply, the output terminal of described power frequency supply is connected with the former limit of exciting transformer, it is characterized in that, the first sampling unit that described power frequency supply also comprises tester and can gather electric current and voltage, the second sampling unit, the secondary of described exciting transformer in turn with REgulatable reactor, building-out capacitor is connected, the earth terminal of described building-out capacitor is connected with the first sampling unit, the earth terminal of the secondary of described exciting transformer is connected with the second sampling unit, described building-out capacitor two ends are parallel with respectively voltage transformer (VT) in standard potential transformer HeGIS transformer station, in described standard potential transformer HeGIS transformer station, voltage transformer (VT) is connected with tester respectively, in described GIS transformer station, voltage transformer (VT) is connected with voltage transformer (VT) Burden box.
Wherein, exciting transformer plays isolation boosting effect, REgulatable reactor, high pressure compensation electric capacity form series relationship and play resonance step-up effect, in capicitive sample JiGIS transformer station, voltage transformer (VT) and standard potential transformer are connected in parallel in resonant circuit, in 20 ~ 120% scopes of rated voltage, boost.Due to, in series resonance system, tend to occur the flux matched bad problem of inductance value and system capacitance, under power frequency, do not reach optimum resonance point, like this when the power supply of output reaches the maximum output of 250V, system can not be boosted to load voltage value, therefore, can be by regulating the inductance value of REgulatable reactor to make system resonance under power frequency.Power frequency supply not only possess boost, control action, but also can collection signal, can be convenient to judge whether resonance can reach test required voltage value by measuring size and the phase differential of trial voltage, electric current, whether resonant process there is the voltage situation that skyrockets.
Power frequency supply combines and becomes one with tester, gather differential pressure signal between tested voltage transformer (VT) and standard potential transformer and the dial gauge signal of tested mutual inductor, be convenient to obtain ratio difference and the phase differential of tested voltage transformer (VT), be convenient to judge whether tested voltage transformer (VT) surpasses < < JJG314-2010 and measure the error limit with voltage transformer (VT) > > vertification regulation.Whole system is easy to adjust, simple to operate, meets the requirement of onsite moving, test.
The beneficial effects of the utility model are: a kind of calibration equipment that boosts for industrial frequency resonance test, convenient adjusting, simple to operate, meets the requirement of onsite moving, test.Further, power frequency supply can acquisition test voltage, size and the phase differential of electric current, is convenient to judge whether resonance can reach test required voltage value, and whether resonant process occurs the voltage situation that skyrockets.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of calibration equipment that boosts for industrial frequency resonance test of the utility model;
The mark implication of accompanying drawing is as follows:
1: power frequency supply, tester are measured all-in-one; 2: tester connection terminal; 3: exciting transformer; 4: the first sampling units; 5: the second sampling units; 6: REgulatable reactor; 7: iron core; 8: insulating medium; 9: cylindrical coil; 10: building-out capacitor; Voltage transformer (VT) in 11:GIS transformer station; 12: standard potential transformer; 13: long cable section of ingoing line end; 14: voltage transformer (VT) Burden box; 15: grading ring.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical solutions of the utility model are described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, the calibration equipment that boosts for industrial frequency resonance test, comprises power frequency supply, and described power frequency supply also comprises tester, for the ease of embodying the integrated of power frequency supply and tester, the rectangle frame called after power frequency supply of 1 representative in Fig. 1, tester are measured to all-in-one 1.The calibration equipment that boosts of traditional industrial frequency resonance test, its power supply and tester are respectively as equipment independently, cannot judge whether resonance can boost to required ceiling voltage under 50Hz, can not prejudge the phenomenon whether resonant process there will be voltage to skyrocket, power supply is only responsible for the output of voltage, can not detect the high pressure of feedback, also cannot effectively intervene the process of boosting, tester is only as the collection of differential pressure signal, the measuring terminals of voltage percentage, passive these data of accepting, at number percent voltage, surpass when specified and can not feed back to power frequency supply, so testing requirements operating personnel professional skill is high, experienced.Power frequency supply is combined with tester, be convenient to the mutual and work compound of information between the two, whole system is easy to adjust, simple to operate, meets the requirement of onsite moving, test.
Power frequency supply, tester are measured all-in-one 1 and are also comprised the first sampling unit 4, second sampling unit 5 that can gather electric current and voltage, the output terminal of power frequency supply is connected with the former limit of exciting transformer 3, and the secondary of described exciting transformer 3 is connected with REgulatable reactor 6, building-out capacitor 10 in turn.In figure, building-out capacitor 10 is that top is also provided with grading ring 15 in the one end being connected with REgulatable reactor 6, and the earth terminal of building-out capacitor 10 i.e. bottom is connected with the first sampling unit 4.
The earth terminal of the secondary of described exciting transformer 3 is connected with the second sampling unit 5, described building-out capacitor 10 two ends are parallel with respectively voltage transformer (VT) 11 in standard potential transformer 12He GIS transformer station, in described standard potential transformer 12He GIS transformer station, voltage transformer (VT) 11 is connected with tester connection terminal 2 respectively, wherein in GIS transformer station, voltage transformer (VT) 11 is tested voltage transformer (VT), in Fig. 1, its top is long cable section of ingoing line end 13, and bottom is connected respectively to tester connection terminal 2 and voltage transformer (VT) Burden box 14.
Wherein, exciting transformer 3 plays isolation boosting effect, REgulatable reactor 6, high pressure compensation electric capacity 10 form series relationship and play resonance step-up effect, in capicitive sample JiGIS transformer station, voltage transformer (VT) 11 is connected in parallel in resonant circuit with standard potential transformer 12, in 20 ~ 120% scopes of rated voltage, boosts.Due to, in series resonance system, tend to occur the flux matched bad problem of inductance value and system capacitance, under power frequency, do not reach optimum resonance point, like this when the power supply of output reaches the maximum output of 250V, system can not be boosted to load voltage value, therefore, can be by regulating the inductance value of REgulatable reactor 6 to make system resonance under power frequency.In figure, REgulatable reactor 6 comprises and is wound in hollow cylindrical coil 9, is provided with movably iron core 7 in described cylindrical coil 9, and the centre of iron core 7 is provided with one section of insulating medium 8.Regulating the position of iron core 7 is the inductance value of adjustable REgulatable reactor 6.
Power frequency supply not only possess boost, control action, but also can collection signal, can be convenient to judge whether resonance can reach test required voltage value by measuring size and the phase differential of trial voltage, electric current, whether resonant process there is the voltage situation that skyrockets.Preferably, power frequency supply also comprises display, for the information that shows that the first sampling unit 4 and the second sampling unit 5 gather, in addition, alarm can also be set, as voice prompt alarm or light prompting alarm, when resonant process occurs that voltage skyrockets phenomenon, carry out alarm.
Power frequency supply combines and becomes one with tester, gather the differential pressure signal of 12 of tested voltage transformer (VT) and standard potential transformers and the dial gauge signal of tested mutual inductor, be convenient to obtain ratio difference and the phase differential of tested voltage transformer (VT), be convenient to judge whether tested voltage transformer (VT) surpasses < < JJG314-2010 and measure the error limit with voltage transformer (VT) > > vertification regulation.Whole system is easy to adjust, simple to operate, meets the requirement of onsite moving, test.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (6)
1. the calibration equipment that boosts for industrial frequency resonance test, comprise power frequency supply, the output terminal of described power frequency supply is connected with the former limit of exciting transformer (3), it is characterized in that, the first sampling unit (4) that described power frequency supply also comprises tester and can gather electric current and voltage, the second sampling unit (5), the secondary of described exciting transformer (3) in turn with REgulatable reactor (6), building-out capacitor (10) is connected, the earth terminal of described building-out capacitor (10) is connected with the first sampling unit (4), the earth terminal of the secondary of described exciting transformer (3) is connected with the second sampling unit (5), described building-out capacitor (10) two ends are parallel with respectively voltage transformer (VT) (11) in standard potential transformer (12) HeGIS transformer station, in described standard potential transformer (12) HeGIS transformer station, voltage transformer (VT) (11) is connected with tester respectively, in described GIS transformer station, voltage transformer (VT) (11) is connected with voltage transformer (VT) Burden box (14).
2. a kind of calibration equipment that boosts for industrial frequency resonance test according to claim 1, is characterized in that, described building-out capacitor (10) is also provided with grading ring (15) in the one end being connected with REgulatable reactor (6).
3. a kind of calibration equipment that boosts for industrial frequency resonance test according to claim 2, it is characterized in that, described REgulatable reactor (6) comprises and is wound in hollow cylindrical coil (9), is provided with movably iron core (7) in described cylindrical coil (9).
4. a kind of calibration equipment that boosts for industrial frequency resonance test according to claim 2, is characterized in that, described power frequency supply also comprises display.
5. a kind of calibration equipment that boosts for industrial frequency resonance test according to claim 4, is characterized in that, described power frequency supply also comprises alarm.
6. a kind of calibration equipment that boosts for industrial frequency resonance test according to claim 5, is characterized in that, described alarm is voice prompt alarm or light prompting alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420426251.1U CN204009042U (en) | 2014-07-31 | 2014-07-31 | A kind of calibration equipment that boosts for industrial frequency resonance test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420426251.1U CN204009042U (en) | 2014-07-31 | 2014-07-31 | A kind of calibration equipment that boosts for industrial frequency resonance test |
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| CN204009042U true CN204009042U (en) | 2014-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155624A (en) * | 2014-07-31 | 2014-11-19 | 国家电网公司 | Boosting calibration equipment used for power frequency resonance test |
| CN107369544A (en) * | 2017-09-04 | 2017-11-21 | 云南电网有限责任公司电力科学研究院 | A kind of GIS formulas of band electromagnetic shielding are from the standard potential transformer that boosts |
-
2014
- 2014-07-31 CN CN201420426251.1U patent/CN204009042U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155624A (en) * | 2014-07-31 | 2014-11-19 | 国家电网公司 | Boosting calibration equipment used for power frequency resonance test |
| CN104155624B (en) * | 2014-07-31 | 2017-07-14 | 国家电网公司 | A kind of boosting calibration equipment tested for industrial frequency resonance |
| CN107369544A (en) * | 2017-09-04 | 2017-11-21 | 云南电网有限责任公司电力科学研究院 | A kind of GIS formulas of band electromagnetic shielding are from the standard potential transformer that boosts |
| CN107369544B (en) * | 2017-09-04 | 2023-09-15 | 云南电网有限责任公司电力科学研究院 | GIS type self-boosting standard voltage transformer with electromagnetic shielding |
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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. |