CN207675829U - A kind of portable line influence voltage measuring apparatus - Google Patents
A kind of portable line influence voltage measuring apparatus Download PDFInfo
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- CN207675829U CN207675829U CN201820052415.7U CN201820052415U CN207675829U CN 207675829 U CN207675829 U CN 207675829U CN 201820052415 U CN201820052415 U CN 201820052415U CN 207675829 U CN207675829 U CN 207675829U
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- 239000003990 capacitor Substances 0.000 claims abstract description 47
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- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 201000004569 Blindness Diseases 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a kind of portable line influence voltage measuring apparatus, by the way that agent structure is arranged, bushing, digital voltmeter, main capacitance and two derided capacitors, and bushing and digital voltmeter are fixed in agent structure, main capacitance tail end pile crown, derided capacitors tail end pile crown and ground terminal pile crown, it can realize that complicated operation field fast and accurately measures inductive voltage value by mancarried device, it is greatly improved the efficiency of safety and line parameter circuit value experiment, simultaneously because measuring induced voltage size in advance, prevent instrument and is directly accessed circuit and the possibility that is burnt out by induced voltage, it ensure that the safety of instrument and meter.The utility model is simple in structure, and installation operation is convenient, repeats and utilizes, economical and practical, easy to carry, management, using simple, job area is small, and operating cost is cheap, the operational security and working efficiency of work about electric power personnel can be effectively promoted, reasonable design is compact-sized, is suitble to be widely popularized.
Description
Technical field
The utility model is related to induced voltage fast measurement device technical fields, in particular for 35kV and the above power transmission line
The device that road induced voltage quickly measures.
Background technology
Existing induced voltage measuring device volume and weight is larger, is not easy to using and transporting for operation field, does not have
Standby portable feature.Line parameter circuit value is the important references amount before circuit power transmission, and during circuit parameter measurement, if not
Know that the size of line influence electricity, blindness wiring measure, can not only influence measurement result, but also endanger the peace of survey crew
Entirely, and to test apparatus instrument it damages.The method for measuring induced voltage at present is quiet mainly by induction electricity removal apparatus, high pressure
It piezoelectric voltage table and is estimated by easy derided capacitors.Although large size induction electricity removal apparatus and electrostatic voltmeter can measure
Induced voltage size, but since volume and weight is larger, it is not easy to onsite application；Induced electricity is estimated by easy derided capacitors
The method security of pressure is inadequate.So previous experiment is when encountering line influence electricity situation bigger than normal, time-consuming, increases scene
The risk of work, and the reliability of estimated data is poor, there is an urgent need for a kind of portable induced voltage testers, measure accurately and quickly
Induced voltage numerical value improves test efficiency to prevent induced overvoltage to being endangered caused by instrument and the person.
Utility model content
The purpose of this utility model is the presence of the above problem in view of the prior art, provides a kind of portable line influence electricity
Pressure measuring device, reasonable design are compact-sized.
In order to achieve the above object, the utility model is achieved by the following technical programs：
A kind of portable line influence voltage measuring apparatus, including agent structure, bushing, digital voltmeter, master
Capacitance and two derided capacitors；The bushing and digital voltmeter are fixed in the agent structure；The main body
Main capacitance tail end pile crown, derided capacitors tail end pile crown and ground terminal pile crown are additionally provided in structure；The output of the bushing
End is electrically connected with the input terminal of the main capacitance, and the output end of the main capacitance is electrically connected with the main capacitance tail end pile crown；Two
The input terminal of a derided capacitors is electrically connected with the main capacitance tail end pile crown, the output end point of two derided capacitors
It is not electrically connected with the derided capacitors tail end pile crown and ground terminal pile crown；The input terminal of the digital voltmeter and the master
Capacitance tail end pile crown is electrically connected, and the output end of the digital voltmeter is electrically connected with ground terminal pile crown.
Further, the agent structure includes staving and upper cover, and the upper cover lid closes in the staving open top；
The bushing, digital voltmeter, main capacitance tail end pile crown, derided capacitors tail end pile crown and ground terminal pile crown are each provided at
On the upper lid.
Further, the lower section of the upper cover, which is also spaced, is fixed with gear shield installation orifice plate, and the main capacitance fixation is located at
On the gear shield installation orifice plate.
Further, the main capacitance is 50pF；The derided capacitors are 1000pF.
Further, the top of the upper cover is also hinged with symmetrically arranged handle.
Further, the staving bottom is additionally provided with apopore.
Further, the lower part of the staving is additionally provided with rubber feet.
Further, the staving and upper cover are made of aluminum alloy materials.
Compared with prior art, the beneficial effects of the utility model are：
1, the utility model fast and accurately measures inductive voltage value in complicated operation field by mancarried device, can
The efficiency of safety and line parameter circuit value experiment is greatly improved, simultaneously because measuring induced voltage size in advance, it is direct to prevent instrument
Line attachment and the possibility burnt out by induced voltage, ensure that the safety of instrument and meter.
2, the utility model is simple in structure, and installation operation is convenient, repeats and utilizes, economical and practical, easy to carry, management,
Using simple, the operational security and working efficiency of work about electric power personnel can be effectively promoted, reasonable design is compact-sized, fits
Conjunction is widely popularized.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it is therefore apparent that the accompanying drawings in the following description is only
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is capacitor loop (series capacitance pressure divider circuit) schematic diagram of the utility model；
Fig. 2 is the dimensional structure diagram of the utility model；
Fig. 3 is the dimensional structure diagram of the utility model；
Fig. 4 is the vertical view of the utility model；
Fig. 5 is the sectional view of Fig. 4 B-B of the utility model；
Fig. 6 is the bucket body structure schematic diagram of the utility model；
Fig. 7 is that connection is illustrated when the practical derided capacitors tail end pile crown of the utility model and ground terminal pile crown disconnect
Figure；
Fig. 8 is connection signal when the real derided capacitors tail end pile crown of the utility model is connected to ground terminal pile crown
Figure；
Figure label explanation：
1, agent structure；11, staving；12, upper cover；121, gear shield installation orifice plate；13, apopore；14, rubber feet；2、
Bushing；3, digital voltmeter；4, main capacitance；5, derided capacitors；6, main capacitance tail end pile crown；7, derided capacitors tail end stake
Head；8, ground terminal pile crown；9, handle；10；Electric wire.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described implementation
Example is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field
The every other embodiment that those of ordinary skill is obtained without creative efforts, belongs to the utility model
The range of protection.
In conjunction with attached drawing 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the utility model is further described：
A kind of portable line influence voltage measuring apparatus, including agent structure 1, bushing 2, digital voltmeter 3,
Main capacitance 4 and two derided capacitors 5；The bushing 2 and digital voltmeter 3 are fixed in the agent structure 1；Institute
It states and is additionally provided with main capacitance tail end pile crown 6, derided capacitors tail end pile crown 7 and ground terminal pile crown 8 in agent structure 1；The high pressure
The output end of casing 2 is electrically connected with the input terminal of the main capacitance 4, the output end of the main capacitance 4 and the main capacitance tail end
Pile crown 6 is electrically connected；The input terminal of two derided capacitors 5 is electrically connected with the main capacitance tail end pile crown 6, is divided described in two
The output end of voltage capacitance 5 is electrically connected with the derided capacitors tail end pile crown 7 and ground terminal pile crown 8 respectively；The digital electric
The input terminal of pressure table 3 is electrically connected with the main capacitance tail end pile crown 6, the output end and ground terminal of the digital voltmeter 3
Pile crown 8 is electrically connected.The utility model structure novel, and in actual use, small in volume is portable, it can be quick and precisely
Measure the numerical value of line influence voltage；It is measured using principle of capacitive divider, charge inducing is stored by capacitor group, it is accurate
Really induced voltage numerical value is measured in 5 both sides of derided capacitors.The loss that can prevent charge inducing to greatest extent in this way, maintains induction
The size of voltage；It can be accessed by the input terminal of the bushing of the portable present apparatus in complicated operation field, quickly
Inductive voltage value accurately is measured, the efficiency of safety and line parameter circuit value experiment is greatly improved, simultaneously because measuring sense in advance
It answers voltage swing, prevents instrument and be directly accessed circuit and the possibility that is burnt out by induced voltage, ensure that the safety of instrument and meter
Property, and simple in structure, economical and practical, using flexible；And series capacitance pressure divider circuit mainly include main capacitance 4 and derided capacitors 5,
Its model can uniformly be equivalent to the series loop of two capacitances.In each component in circuit, capacitor is to the resistance of charge inducing
Infinity can maintain unstable induced voltage for measuring.It, can be the two of derided capacitors 5 according to principle of capacitive divider
End measures voltage, and converses inductive voltage value according to intrinsic standoff ratio；Select different intrinsic standoff ratio pile crowns that will obtain different measurements
Precision and range.
The agent structure 1 includes staving 11 and upper cover 12, and the lid of the upper cover 12 closes in 11 open top of the staving；
The bushing 2, digital voltmeter 3, main capacitance tail end pile crown 6, derided capacitors tail end pile crown 7 and ground terminal pile crown 8
It is each provided in the upper cover 12, it is quick and easy for installation.
The lower section of the upper cover 12, which is also spaced, is fixed with gear shield installation orifice plate 121, and the fixation of the main capacitance 4 is located at described
On gear shield installation orifice plate 121, while the electrical connection that through-hole on installation orifice plate 121 realizes circuit is protected by the gear.
The main capacitance 4 is 50pF；The derided capacitors 5 are 1000pF；The present apparatus is by using one group of pinpoint accuracy
The mode of 50pF capacitances two groups of 1000pF capacitance wiring of collocation, that is, use two kinds of alternative circuits of intrinsic standoff ratio, and have
The pressure voltage of 50000V or more can directly be connected on the three-phase of circuit and measure, both after the disconnection of line side grounding switch
It ensure that measurement accuracy, and improve pressure voltage.
It to meet different demands, can be switched over by dividing pile crown, the measurement partial pressure side of device is designed as 20:1 He
40:1 both of which：Derided capacitors tail end pile crown 7 is connected with ground terminal pile crown 8 by electric wire, when derided capacitors 5 are in parallel, point
Pressure ratio is 40:1；When derided capacitors tail end pile crown 7 and ground terminal pile crown 8 disconnect, one of them the hanging disconnection of derided capacitors 5,
Intrinsic standoff ratio is 20:1；By the intrinsic standoff ratio of regulating device series loop capacitance, and use class of accuracy for 0.2S grades of voltmeter,
It can ensure that the deviation of measured value and actual value is no more than 3%, meet the requirement within 5%.
The top of the upper cover 12 is also hinged with symmetrically arranged handle 9；The present apparatus can be carried well by handle 9
It rises, easy to remove and storage.
11 bottom of the staving is additionally provided with apopore 13, water in staving 11 is discharged by the way that the realization of apopore 13 is arranged, together
When also act as the effect of ventilation and heat.
The lower part of the staving 11 is additionally provided with rubber feet 14, realizes the support to staving 11 by the stabilizer blade, is convenient for
The placement of staving 11.
The staving 11 and upper cover 12 are made of aluminum alloy materials.
The main capacitance tail end pile crown 6, derided capacitors tail end pile crown 7 and ground terminal pile crown 8 include standing screw and
Tightening nuts；Standing screw fixation is threaded through in the upper cover 12, the tightening nuts be located at the standing screw it is upper,
On the screw rod of lower part, and the clamping of the conductor wire of the electric wire of upper and lower part is connected, for realizing agent structure 1, bushing 2, number
The electric connection of word formula voltmeter 3, main capacitance 4 and two derided capacitors 5.
It is and to be equipped with by assembling the capacitor group of different capacitances and voltage meter when the utility model is used
Perfect protective device is realized electrometric portable to incuding.Device is broadly divided into four modules, respectively capacitor group mould
Block, voltage sample module, earthing of casing protection module, intrinsic standoff ratio handover module.
Capacitor group module design：By the capacitor of 50pF and the capacitor group tandem compound of 1000pF, 2000pF
It forms.It is ready by series capacitance loop voltage-distributing, it is low and stable to be converted into numerical value for high, the unstable big induced voltage by numerical value
Small induced voltage, to carry out the measurement of induced voltage.It is divided, induced electricity can be stored by capacitor group, avoided common
The charge inducing release that voltage measurement meter is brought.
Voltage sample module design：Sampled point is the head and the tail both ends of derided capacitors 5, and wherein tail end is directly grounded, and is led to
The voltage value that digital voltmeter 3 acquires 5 part of derided capacitors is crossed, and corresponding intrinsic standoff ratio is carried out to measured voltage value and is changed
It calculates, obtains the total inductive voltage value of circuit.
Earthing of casing protection module design scheme：The main capacitance 4 of 50pF will bear high pressure, therefore in 4 high-pressure side of main capacitance
It installs the casing that pressure voltage is 50000V additional, ensures insulation of the high-pressure side to shell and ground.The capacitance partial pressure circuit of device is used
Metal-enclosed type shell, and it is equipped with Special grounding pile crown, it is protected by the earthing of casing and ensures its safety.
Intrinsic standoff ratio handover module：Intrinsic standoff ratio is designed as two kinds of optional modes, there is the pressure divider circuit pile crown for switching, pattern
The combination of one 50pF capacitances and 1000pF capacitances, intrinsic standoff ratio 20:1；Pattern two is the combination of 50pF capacitances and 2000pF capacitances,
Intrinsic standoff ratio is 40:1.
The present apparatus is simple in structure, and installation operation is convenient, repeats and utilizes, economical and practical, and easy to carry, management uses letter
Single, job area is small, and operating cost is cheap, can effectively promote the operational security and working efficiency of work about electric power personnel, if
Meter is reasonable, compact-sized, is suitble to be widely popularized.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be
Mechanical connection can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is "above" or "below" second feature
Can be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature and be directly above or diagonally above the second feature, or only
Indicate that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combines and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (8)
1. a kind of portable line influence voltage measuring apparatus, it is characterised in that：Including agent structure (1), bushing (2),
Digital voltmeter (3), main capacitance (4) and two derided capacitors (5)；It is fixed with the high pressure on the agent structure (1)
Casing (2) and digital voltmeter (3)；It is additionally provided with main capacitance tail end pile crown (6), derided capacitors tail on the agent structure (1)
Hold pile crown (7) and ground terminal pile crown (8)；The input terminal of the output end and the main capacitance (4) of the bushing (2) is electrically connected
It connects, the output end of the main capacitance (4) is electrically connected with the main capacitance tail end pile crown (6)；Two derided capacitors (5) it is defeated
Enter end to be electrically connected with the main capacitance tail end pile crown (6), the output ends of two derided capacitors (5) respectively with the partial pressure
Capacitance tail end pile crown (7) and ground terminal pile crown (8) electrical connection；The input terminal of the digital voltmeter (3) and the main electricity
Hold tail end pile crown (6) to be electrically connected, the output end of the digital voltmeter (3) is electrically connected with ground terminal pile crown (8).
2. portable line influence voltage measuring apparatus according to claim 1, it is characterised in that：The agent structure
(1) include staving (11) and upper cover (12), upper cover (12) the lid conjunction is in the staving (11) open top；The high pressing sleeve
Manage (2), digital voltmeter (3), main capacitance tail end pile crown (6), derided capacitors tail end pile crown (7) and ground terminal pile crown (8)
It is each provided in the upper cover (12).
3. portable line influence voltage measuring apparatus according to claim 2, it is characterised in that：The upper cover (12)
Lower section, which is also spaced, is fixed with gear shield installation orifice plate (121), and the main capacitance (4) is fixed to be located at the gear shield installation orifice plate
(121) on.
4. portable line influence voltage measuring apparatus according to claim 1, it is characterised in that：The main capacitance (4)
For 50pF；The derided capacitors (5) are 1000pF.
5. portable line influence voltage measuring apparatus according to claim 2, it is characterised in that：The upper cover (12)
Top is also hinged with symmetrically arranged handle (9).
6. portable line influence voltage measuring apparatus according to claim 2, it is characterised in that：Staving (11) bottom
Portion is additionally provided with apopore (13).
7. portable line influence voltage measuring apparatus according to claim 2, it is characterised in that：The staving (11)
Lower part is additionally provided with rubber feet (14).
8. portable line influence voltage measuring apparatus according to claim 2, it is characterised in that：The staving (11) and
Upper cover (12) is made of aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052415.7U CN207675829U (en) | 2018-01-12 | 2018-01-12 | A kind of portable line influence voltage measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052415.7U CN207675829U (en) | 2018-01-12 | 2018-01-12 | A kind of portable line influence voltage measuring apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN207675829U true CN207675829U (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820052415.7U Active CN207675829U (en) | 2018-01-12 | 2018-01-12 | A kind of portable line influence voltage measuring apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN207675829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
-
2018
- 2018-01-12 CN CN201820052415.7U patent/CN207675829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
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