CN206163280U - Miniaturized resistance -type voltage transformer - Google Patents
Miniaturized resistance -type voltage transformer Download PDFInfo
- Publication number
- CN206163280U CN206163280U CN201621147595.4U CN201621147595U CN206163280U CN 206163280 U CN206163280 U CN 206163280U CN 201621147595 U CN201621147595 U CN 201621147595U CN 206163280 U CN206163280 U CN 206163280U
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- resistance
- voltage
- low
- low pressure
- terminal box
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Abstract
The utility model discloses a miniaturized resistance -type voltage transformer, including a mounting plate, mounting plate is last to be provided with the high voltage resistor of a secondary low pressure terminal box and three group's looks isostructures, the high voltage resistor of three looks isostructure all with secondary low pressure terminal box is connected, secondary low pressure terminal box includes the shell, sets up at the inside low pressure resistance A of shell, and low pressure resistance B and low pressure resistance C, be connected to a zero sequence resistance's input after low pressure resistance A, low pressure resistance B and low pressure resistance C's output are parallelly connected each other, zero sequence resistance's output ground connection, the bulk reduction, the weight loss can integrate inside 10kV joins in marriage the net switch, the optimal design is carried out in the structure and the connection of high voltage resistor and secondary low pressure terminal box, and the effectual 10kV that has eliminated joins in marriage stray resistance and the influence of context effect to the precision that net switch inside arouses owing to compact structure.
Description
Technical field
The utility model is related to 10kV distributions switch measuring apparatus field, more particularly to a kind of miniaturization resistive voltage is mutual
Sensor.
Background technology
Voltage transformer is electric energy metrical and the visual plant of relay protection in power system, its degree of accuracy and reliability with
The safe and reliable and economical operation of power system is closely related.As power system constantly develops, to power system measuring and guarantor
Shield proposes new requirement.Resistive Voltage Transformer is a kind of set electron technology and materialogy technology for growing up in recent years
The novel voltage mutual inductor being integrated, the features such as with high accuracy, high reliability, bandwidth.Resistive Voltage Transformer exists
It is widely used on 110kV and above power transmission and transformation line, the monitoring and accurate measurement for line voltage distribution, but it is common
Resistive Voltage Transformer equipment volume is larger, it is impossible to prevent adjacent lines electromagnetic interference shadow using laying by the way of insulation barrier
Ring, cause the accuracy measured not high.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of small volume, lightweight, can be integrated in
10kV distribution switch internals, meet miniaturization Resistive Voltage Transformer of the overhead transmission line to the accurate measurement requirement of line loss.
To achieve these goals, the technical solution adopted in the utility model is：
One kind miniaturization Resistive Voltage Transformer, including a mounting base, are provided with one two on the mounting base
Secondary low voltage electrical connectors and three groups of mutually isostructural high-voltage resistors, three mutually isostructural high-voltage resistors are secondary low with described
Crimping line box connection, the secondary low-voltage terminal box includes shell, arranges low resistance A inside the housing, low resistance B and
Low resistance C, is connected to zero sequence electricity after the output end of the low resistance A, low resistance B and low resistance C is parallel with one another
The input of resistance, the output head grounding of the zero sequence resistance, the low resistance A, the input of low resistance B and low resistance C
End is respectively connected with shielded conductor, and three shielded conductors are connected respectively with three high-voltage resistors.
Used as the further improvement of such scheme, every group of high-voltage resistor includes the HV Terminal being sequentially connected, low pressure
Terminal and high-tension resistive, the HV Terminal, low-voltage terminal and high-tension resistive pass through poured with epoxy resin in integral structure,
Three shielded conductors distinguish three low-voltage terminal connections.
As the further improvement of such scheme, it is provided with the mounting base for fixing high-voltage resistor and secondary
The fixing hole that low voltage electrical connectors are fixed, is additionally provided with the installation installed for transformer, is additionally provided with for the ground hole of ground connection.
Used as the further improvement of such scheme, the shell is iron shell.
The beneficial effects of the utility model：
A kind of miniaturization Resistive Voltage Transformer of the utility model, is connect using three groups of high-voltage resistors and a secondary low-voltage
Line box connects, and volume reduces, and weight saving can be integrated in 10kV distribution switch internals；High-voltage resistor and secondary low-voltage wiring
The structure of box and connection are optimized design, effectively eliminated 10kV distributions switch internal due to compact conformation cause it is spuious
Resistance and kindred effect are opposite to the precision under complex electromagnetic environment up to 0.5 grade for the impact of precision, meet overhead transmission line
Accurate measurement to line loss is required.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, rather than entirely
Portion's embodiment, those skilled in the art on the premise of not paying creative work, can be with according to these accompanying drawings acquisitions
Other designs and accompanying drawing：
Fig. 1 is the utility model preferred embodiment structural representation；
Fig. 2 is the utility model preferred embodiment structural representation；
Fig. 3 is the utility model preferred embodiment structural representation；
Fig. 4 is the utility model preferred embodiment structural representation.
Specific embodiment
The technique effect of design of the present utility model, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing
Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of embodiment of the present utility model, rather than whole embodiments, based on embodiment of the present utility model, the skill of this area
The other embodiment that art personnel are obtained on the premise of not paying creative work, belongs to the model of the utility model protection
Enclose.
Referring to figs. 1 to Fig. 4, one kind miniaturization Resistive Voltage Transformer, including a mounting base 1, the mounting base
On be provided with a secondary low-voltage terminal box 3 and three groups of mutually isostructural high-voltage resistors 2, be provided with the mounting base 1
For fixing the fixing hole 11 that high-voltage resistor 2 and secondary low-voltage terminal box 3 are fixed, the peace installed for transformer is additionally provided with
13 are filled, is additionally provided with for the ground hole 14 of ground connection.
Three mutually isostructural high-voltage resistors 2 are connected with the secondary low-voltage terminal box 3, the secondary low-voltage wiring
Box includes shell 31, and the shell 31 is iron shell, and the low resistance A32 being arranged on inside shell 31, low resistance
B33 and low resistance C34, connects after the output end of the low resistance A32, low resistance B33 and low resistance C34 is parallel with one another
It is connected to the input of a zero sequence resistance 35, the output head grounding of the zero sequence resistance 35, the low resistance A32, low resistance
The input of B33 and low resistance C34 is respectively connected with shielded conductor 36, three shielded conductors 36 respectively with three high-voltage resistors
2 connections.
Every group of high-voltage resistor 2 includes the HV Terminal 21 being sequentially connected, low-voltage terminal 22 and high-tension resistive 23, described
HV Terminal 21, low-voltage terminal 22 and high-tension resistive 23 pass through poured with epoxy resin in integral structure, three shielded conductors
36 distinguish three low-voltage terminals 22 connects, the secondary low-voltage terminal box include shell 31 can with the high-voltage resistor 2
It is cast for being integrally installed on mounting base 1.
The HV Terminal 21 of three groups of high-voltage resistors 2 is attempted by respectively the three-phase one of 10kV Distribution Network Load Datas switch or breaker
When on secondary major loop, then the voltage between the input and output end of low resistance A32 be A phase voltages, low resistance B33 it is defeated
Enter voltage i.e. B phase voltages, the voltage between the input of the low resistance C34 and output end i.e. C phases electricity between end and output end
Pressure, the voltage between the input and output end of zero sequence resistance D35 is residual voltage.
It is connected with a secondary low-voltage terminal box 3 using three groups of high-voltage resistors 2, reduces the volume of voltage transformer, is subtracted
Light weight, can be integrated in 10kV distribution switch internals, conveniently carry out outdoor installation.High-voltage resistor 2 and secondary low-voltage wiring
The structure of box 3 and connection are optimized design, effectively eliminated 10kV distributions switch internal due to compact conformation cause it is miscellaneous
Scattered resistance and kindred effect are opposite to the precision under complex electromagnetic environment up to 0.5 grade for the impact of precision, meet trolley line
Accurate measurement of the road to line loss is required.
It is more than that preferred embodiment of the present utility model is illustrated, but the utility model is created and is not limited to
The embodiment, those of ordinary skill in the art can also make a variety of etc. on the premise of without prejudice to the utility model spirit
With modification or replacement, the modification of these equivalents or replacement are all contained in the application claim limited range.
Claims (4)
- It is 1. a kind of to minimize Resistive Voltage Transformer, it is characterised in that：Including a mounting base（1）, on the mounting base It is provided with a secondary low-voltage terminal box（3）With three groups of mutually isostructural high-voltage resistors（2）, three mutually isostructural high-tension electricities Resistance device（2）With the secondary low-voltage terminal box（3）Connection, the secondary low-voltage terminal box includes shell（31）, arrange outside Shell（31）Internal low resistance A（32）, low resistance B（33）With low resistance C（34）, the low resistance A（32）, low pressure Resistance B（33）With low resistance C（34）Output end it is parallel with one another after be connected to a zero sequence resistance（35）Input, described zero Sequence resistance（35）Output head grounding, the low resistance A（32）, low resistance B（33）With low resistance C（34）Input It is respectively connected with shielded conductor（36）, three shielded conductors（36）Respectively with three high-voltage resistors（2）Connection.
- 2. miniaturization Resistive Voltage Transformer according to claim 1, it is characterised in that：Every group of high-voltage resistor（2） Include the HV Terminal being sequentially connected（21）, low-voltage terminal（22）And high-tension resistive（23）, the HV Terminal（21）, low pressure Terminal（22）And high-tension resistive（23）By poured with epoxy resin in integral structure, three shielded conductors（36）Three respectively Low-voltage terminal（22）Connection.
- 3. miniaturization Resistive Voltage Transformer according to claim 1, it is characterised in that：The mounting base（1）On It is provided with for fixing high-voltage resistor（2）With secondary low-voltage terminal box（3）Fixed fixing hole（11）, it is additionally provided with for mutual The installation that sensor is installed（13）, it is additionally provided with for the ground hole of ground connection（14）.
- 4. miniaturization Resistive Voltage Transformer according to claim 1, it is characterised in that：The shell（31）For irony Shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147595.4U CN206163280U (en) | 2016-10-21 | 2016-10-21 | Miniaturized resistance -type voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147595.4U CN206163280U (en) | 2016-10-21 | 2016-10-21 | Miniaturized resistance -type voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206163280U true CN206163280U (en) | 2017-05-10 |
Family
ID=58655620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621147595.4U Active CN206163280U (en) | 2016-10-21 | 2016-10-21 | Miniaturized resistance -type voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206163280U (en) |
-
2016
- 2016-10-21 CN CN201621147595.4U patent/CN206163280U/en active Active
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