CN107942115A - The capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio - Google Patents
The capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio Download PDFInfo
- Publication number
- CN107942115A CN107942115A CN201710989108.1A CN201710989108A CN107942115A CN 107942115 A CN107942115 A CN 107942115A CN 201710989108 A CN201710989108 A CN 201710989108A CN 107942115 A CN107942115 A CN 107942115A
- Authority
- CN
- China
- Prior art keywords
- voltage
- metal
- capacitance
- low
- bucket seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
- G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio, solves the problems, such as that the existing secondary output voltage when carrying out high voltage measuring of existing apparatus is unadjustable.Join high-voltage capacitor group including a string formation（2）, voltage measuring instrument and back-off metal bucket seat（6）, in back-off metal bucket seat（6）Inner cavity in be embedded with insulating cylinder（8）, in insulating annular supporting table（17）Centre bore in be embedded with cylindrical metal ring（9）, in a coil spring fingertip（14）In be movably set with metal selector shaft（16）, in metal selector shaft（16）Lower end be connected with no-load voltage ratio adjust insulated handle（4）, in insulating annular supporting table（17）The insulating cylinder of top（8）Internal chamber wall on, be provided with the different low-voltage capacitance of capacity at equal intervals radian（11）, metal selector shaft 16 is rotated, to realize that the switching of the low-voltage capacitance 11 of different capacitances accesses, achievees the purpose that to change intrinsic standoff ratio.
Description
Technical field
The present invention relates to the high voltage meter in a kind of power transmission and transformation system, more particularly to a kind of electricity in electric system
High voltage is converted into the measurement that low-voltage accesses instrument measurement again in the protective device of the commissioning test of power equipment or monitoring voltage
Device.
Background technology
The protective device of the commissioning test of power equipment or monitoring voltage in electric system, is required for utilizing high voltage measuring
Device, low-voltage is converted into by high voltage, then accesses measuring instrumentss.At present, for the measurement of ac high voltage, mainly use
Capacitive divider carries out high-tension measurement, but existing divider its no-load voltage ratio is fixed, and secondary output voltage is unadjustable, can only
Fixed measuring instrumentss are accessed, the scope of application is restricted, it has not been convenient to which scene is tested.
The content of the invention
The present invention provides a kind of capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio, solves existing apparatus
The existing uncontrollable technical problem of output voltage secondary when carrying out high voltage measuring.
The present invention is to solve above technical problem by the following technical programs：
A kind of capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio, including string formation connection high-voltage capacitor group, voltage
Measuring instrumentss and back-off metal bucket seat, are embedded with insulating cylinder, in the middle part of the inner cavity of insulating cylinder in the inner cavity of back-off metal bucket seat
Insulating annular supporting table is fixedly installed, cylindrical metal ring is embedded with the centre bore of insulating annular supporting table, in cylinder
A coil spring fingertip is provided with the centre bore hole intracavity sidewall of shape becket, metal is movably set with a coil spring fingertip
Selector shaft, no-load voltage ratio is connected with the lower end of metal selector shaft and adjusts insulated handle, above insulating annular supporting table
Insulating cylinder internal chamber wall on, the different low-voltage capacitance of capacity is provided with equal intervals, in the upper of metal selector shaft radian
End is connected with metal swing rod, is fixedly installed flexible tactile tongue on the other end of metal swing rod, the tactile tongue of elasticity and low-voltage capacitance it is interior
Side arc pole plate touches together, and the outside pole plate of low-voltage capacitance is by pressing voltage capacitance earthing block and the staving of back-off metal bucket seat
Link together, be provided with cable passing hole on the bucket bottom of back-off metal bucket seat, low pressure connecting wire passes through cable passing hole
Link together afterwards with cylindrical metal ring, the bottom crown of the other end of low pressure connecting wire and string formation connection high-voltage capacitor group
Link together, be connected with high-voltage connection in the top crown of string formation connection high-voltage capacitor group, connected on cylindrical metal ring
There is measuring instrumentss connecting line.
Adjusted in no-load voltage ratio and be provided with no-load voltage ratio indicator on insulated handle, ground connection is provided with the staving of back-off metal bucket seat
Bolt.
The present invention is provided with the low-voltage capacitance of four different capacitances in insulated leg, and low-voltage capacitance selector one end is embedding
Enter to be fixed on selector shaft, the other end is contacted with low-voltage capacitance head end by card slot.Adjusting insulated handle by no-load voltage ratio makes selection
Device shaft rotates, and realizes that low-voltage capacitance selector rotates, and to realize that the switching of the low-voltage capacitance of different capacitances accesses, reaches and changes
Become the purpose of intrinsic standoff ratio, make secondary voltage output adjustable, different measuring instrument and protective device can be accessed.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the sectional view along A-A in Fig. 1.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio, including string formation connection high-voltage capacitor group 2, voltage
Measuring instrumentss and back-off metal bucket seat 6, are embedded with insulating cylinder 8, in the inner cavity of insulating cylinder 8 in the inner cavity of back-off metal bucket seat 6
Middle part is fixedly installed insulating annular supporting table 17, and cylindrical metal ring is embedded with the centre bore of insulating annular supporting table 17
9, a coil spring fingertip 14 is provided with the centre bore hole intracavity sidewall of cylindrical metal ring 9, in a coil spring fingertip 14
Metal selector shaft 16 is movably set with, no-load voltage ratio is connected with the lower end of metal selector shaft 16 and adjusts insulated handle 4,
On the internal chamber wall of the insulating cylinder 8 of the top of insulating annular supporting table 17, it is provided with the different low-voltage capacitance of capacity at equal intervals radian
11, metal swing rod 15 is connected with the upper end of metal selector shaft 16, bullet is fixedly installed on the other end of metal swing rod 15
Property touch tongue 13, together with the tactile tongue 13 of elasticity is touched with the inner side arc pole plate of low-voltage capacitance 11, the outside pole plate of low-voltage capacitance 11
Linked together with being buckled to the staving of metal bucket seat 6 by pressing voltage capacitance earthing block 10, set on the bucket bottom of back-off metal bucket seat 6
Cable passing hole 18 is equipped with, low pressure connecting wire 3 links together after passing through cable passing hole 18 with cylindrical metal ring 9, low
The other end and the bottom crown of string formation connection high-voltage capacitor group 2 for pressing connecting wire 3 link together, and join high-voltage electricity in a string formation
The top crown of container group 2 is connected with high-voltage connection 1, and measuring instrumentss connecting line 7 is connected with cylindrical metal ring 9, passes through survey
Amount instrument leads 7 links together with measuring instrumentss.
Adjusted in no-load voltage ratio and be provided with no-load voltage ratio indicator 5 on insulated handle 4, be provided with the staving of back-off metal bucket seat 6
Earth stud 12, it is convenient to access ground wire.
High-voltage connection 1 accesses high voltage to be measured, after string formation connection high-voltage capacitor group 2, passes through high-voltage capacitance
The low pressure of end tape insulation set is held connecting wire 3 and is connected with cylindrical metal ring 9, the centre bore lumen side of cylindrical metal ring 9
Two coil spring fingertips 14 are provided with wall, spring touch finger 14 is pressed in metal selector shaft 16 by elastic force, ensures that contact is good,
Make 16 flexible rotating of metal selector shaft.16 upper end of metal selector shaft is fixed in one end insertion of metal swing rod 15, gold
Flexible tactile tongue 13 is fixedly installed in the other end for belonging to swing rod 15.Insulated handle 4 is adjusted by no-load voltage ratio, makes metal selector shaft 16
Rotate, to realize that the switching of the low-voltage capacitance 11 of different capacitances accesses, achieve the purpose that to change intrinsic standoff ratio.No-load voltage ratio adjusts insulation
No-load voltage ratio indicator 5 is arranged at 4 top of handle, can indicate the intrinsic standoff ratio currently selected.
On the internal chamber wall of insulating cylinder 8 above insulating annular supporting table 17, it is provided with capacity difference at equal intervals radian
Low-voltage capacitance 11, the quantity of low-voltage capacitance 11 can make choice and determine according to the species of measuring instrumentss；In back-off metal drum
Earth stud 12 is provided with the staving of seat 6, is grounded in the measurements by earth stud 12.Draw and survey on cylindrical metal ring 9
Instrument leads 7 is measured, measuring instrumentss connecting line 7 is the conducting wire of tape insulation crust, and the voltage between its cored wire and ground is to export
Secondary low-voltage, can access in different measuring devices or test loop.
Claims (2)
1. a kind of capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio, including string formation connection high-voltage capacitor group（2）、
Voltage measuring instrument and back-off metal bucket seat（6）, it is characterised in that in back-off metal bucket seat（6）Inner cavity in be embedded with insulation
Cylinder（8）, in insulating cylinder（8）Inner cavity in the middle part of be fixedly installed insulating annular supporting table（17）, in insulating annular supporting table（17）
Centre bore in be embedded with cylindrical metal ring（9）, in cylindrical metal ring（9）Centre bore hole intracavity sidewall on be provided with one
Coil spring fingertip（14）, in a coil spring fingertip（14）In be movably set with metal selector shaft（16）, in metal selector
Shaft（16）Lower end be connected with no-load voltage ratio adjust insulated handle（4）, in insulating annular supporting table（17）The insulating cylinder of top（8）'s
On internal chamber wall, it is provided with the different low-voltage capacitance of capacity at equal intervals radian（11）, in metal selector shaft（16）Upper end
It is connected with metal swing rod（15）, metal swing rod（15）The other end on flexible tactile tongue is fixedly installed（13）, the tactile tongue of elasticity（13）
With low-voltage capacitance（11）Inner side arc pole plate touch together, low-voltage capacitance（11）Outside pole plate by pressing voltage capacitance to be grounded
Block（10）With being buckled to metal bucket seat（6）Staving link together, back-off metal bucket seat（6）Bucket bottom on be provided with cable and wear
Via（18）, low pressure connecting wire（3）Through cable passing hole（18）Afterwards with cylindrical metal ring（9）Link together, low pressure
Connecting wire（3）The other end and a string formation connection high-voltage capacitor group（2）Bottom crown link together, in one group of tandem high pressure
Capacitor group（2）Top crown be connected with high-voltage connection（1）, in cylindrical metal ring（9）On be connected with measuring instrumentss connecting line
（7）.
2. a kind of capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio according to claim 1, its feature exist
In in no-load voltage ratio adjusting insulated handle（4）On be provided with no-load voltage ratio indicator（5）, in back-off metal bucket seat（6）Staving on be provided with
Earth stud（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710989108.1A CN107942115B (en) | 2017-10-22 | 2017-10-22 | Capacitance voltage-dividing type high-voltage measuring device capable of adjusting voltage-dividing ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710989108.1A CN107942115B (en) | 2017-10-22 | 2017-10-22 | Capacitance voltage-dividing type high-voltage measuring device capable of adjusting voltage-dividing ratio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107942115A true CN107942115A (en) | 2018-04-20 |
| CN107942115B CN107942115B (en) | 2019-12-13 |
Family
ID=61935510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710989108.1A Active CN107942115B (en) | 2017-10-22 | 2017-10-22 | Capacitance voltage-dividing type high-voltage measuring device capable of adjusting voltage-dividing ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107942115B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04309870A (en) * | 1990-12-26 | 1992-11-02 | Merlin Gerin | Reference-ac-voltage measuring bridge |
| CN101615502A (en) * | 2009-05-07 | 2009-12-30 | 国网电力科学研究院 | A kind of double layered bell jar type voltage and current sensor |
| KR20100046310A (en) * | 2008-10-27 | 2010-05-07 | 한국표준과학연구원 | Evaluating method and system of high voltage divider |
| CN201853571U (en) * | 2010-10-22 | 2011-06-01 | 北京浩霆光电技术有限责任公司 | Voltage transformer based on capacitance-resistance voltage division principle |
| WO2014076210A1 (en) * | 2012-11-16 | 2014-05-22 | Alstom Technology Ltd | Very high voltage dc line voltage sensor |
| CN203838215U (en) * | 2013-11-30 | 2014-09-17 | 芜湖国睿兆伏电子有限公司 | Capacitive voltage divider capable of adjusting voltage division ratio |
| CN204256014U (en) * | 2014-09-26 | 2015-04-08 | 国家电网公司 | A kind of voltage divider and bleeder circuit thereof |
| CN205539343U (en) * | 2016-04-14 | 2016-08-31 | 华北电力大学 | Integration probe is put in office based on electric capacity divides platen press VFTO measuring transducer |
-
2017
- 2017-10-22 CN CN201710989108.1A patent/CN107942115B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04309870A (en) * | 1990-12-26 | 1992-11-02 | Merlin Gerin | Reference-ac-voltage measuring bridge |
| KR20100046310A (en) * | 2008-10-27 | 2010-05-07 | 한국표준과학연구원 | Evaluating method and system of high voltage divider |
| CN101615502A (en) * | 2009-05-07 | 2009-12-30 | 国网电力科学研究院 | A kind of double layered bell jar type voltage and current sensor |
| CN201853571U (en) * | 2010-10-22 | 2011-06-01 | 北京浩霆光电技术有限责任公司 | Voltage transformer based on capacitance-resistance voltage division principle |
| WO2014076210A1 (en) * | 2012-11-16 | 2014-05-22 | Alstom Technology Ltd | Very high voltage dc line voltage sensor |
| CN203838215U (en) * | 2013-11-30 | 2014-09-17 | 芜湖国睿兆伏电子有限公司 | Capacitive voltage divider capable of adjusting voltage division ratio |
| CN204256014U (en) * | 2014-09-26 | 2015-04-08 | 国家电网公司 | A kind of voltage divider and bleeder circuit thereof |
| CN205539343U (en) * | 2016-04-14 | 2016-08-31 | 华北电力大学 | Integration probe is put in office based on electric capacity divides platen press VFTO measuring transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107942115B (en) | 2019-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102866377B (en) | The detection check system and method for the online monitoring assembly of transformer partial discharge and location | |
| CN105428007B (en) | A kind of combined electrical apparatus of multigroup capacitance plate insulation core body | |
| US20180100878A1 (en) | Sensing device for an electrical system | |
| CN203519773U (en) | Portable dry-type air-core reactor turn-to-turn insulation pulse vibration test device | |
| CN202217031U (en) | Insulation detection device for high voltage bushing of transformer | |
| CN106526288A (en) | Transmission line voltage and current monitoring system and method | |
| CN106816291B (en) | A kind of distribution transformer for simulating winding short circuit state | |
| CN107355817B (en) | A kind of low energy single electric spark production method | |
| CN104316766A (en) | Digital phase detection device | |
| CN105891604A (en) | Loop impedance method of measuring power transmission support grounding impedance and testing system | |
| CN205539205U (en) | Measure transmission tower earth impedance's return circuit impedance test system | |
| CN107942115A (en) | The capacitance partial pressure type high voltage meter of adjustable intrinsic standoff ratio | |
| CN206945795U (en) | A kind of transmission line of electricity voltage x current monitoring system | |
| CN108593997A (en) | A kind of voltage measuring apparatus and method suitable for transmission line of electricity | |
| CN105372457B (en) | A kind of capacitance type equipment live detection end shield sampler | |
| CN109696610B (en) | Insulation tester for additive manufacturing equipment detection | |
| CN206235670U (en) | A kind of insulator resistance live detection instrument | |
| CN207516494U (en) | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity | |
| CN203365519U (en) | Sampling device for high-voltage bushing electrified detection test | |
| CN201057534Y (en) | Induction type digital high-voltage electroscope | |
| CN109164360A (en) | A kind of Portable PD On-Line monitoring device | |
| CN202495346U (en) | Portable double-shielded standard capacitor | |
| CN206696416U (en) | Fault detector test device | |
| CN206099286U (en) | A cable joint | |
| CN205898851U (en) | Appearance is sent in direct current examination to 35kV overhead line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |