CN210037956U - Overvoltage and overcurrent measuring device for distribution line - Google Patents
Overvoltage and overcurrent measuring device for distribution line Download PDFInfo
- Publication number
- CN210037956U CN210037956U CN201920661178.9U CN201920661178U CN210037956U CN 210037956 U CN210037956 U CN 210037956U CN 201920661178 U CN201920661178 U CN 201920661178U CN 210037956 U CN210037956 U CN 210037956U
- Authority
- CN
- China
- Prior art keywords
- voltage
- over
- detection unit
- distribution line
- current
- 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.)
- Active
Links
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The application discloses an overvoltage overcurrent measuring device for distribution lines includes: the voltage detection unit and the current detection unit, the high-voltage wire is connected to voltage detection unit's one end, and the other end ground connection, the high-voltage wire is passed through to current detection unit's centre bore. In this application, detect the voltage parameter and the current parameter of high-voltage wire through voltage detecting element and current detecting element respectively to the realization is to the high-speed measurement of full waveform of distribution lines overvoltage overcurrent.
Description
Technical Field
The application belongs to the technical field of high-voltage transmission lines, and particularly relates to an overvoltage and overcurrent measuring device for a distribution line.
Background
The distribution line is an important connection between the transmission network and the user terminal, and the safe operation relationship of the distribution line is very important to the power supply stability of the user. The over-voltage and over-current measurement of distribution line is the important basis of research distribution line lightning protection, and distribution line overvoltage amplitude is at several hundred kilovolts's of magnitude, and distribution line overcurrent is between several thousand amperes to several ten thousand amperes, unable direct acquisition, needs corresponding sensor to adorn and trades, and distribution line long-term live working simultaneously, and operating voltage is at several kilovolts, and this measurement of the over-voltage and over-current for current distribution line brings very big difficulty.
SUMMERY OF THE UTILITY MODEL
The application discloses an overvoltage overcurrent measuring device for distribution lines detects the voltage parameter and the current parameter of distribution lines through voltage detecting element and current detecting element respectively to the realization is to the high-speed measurement of the full wave form of the overvoltage overcurrent of distribution lines.
The application provides an overvoltage overcurrent measuring device for distribution lines, includes: the voltage detection unit and the current detection unit, the high-voltage wire is connected to voltage detection unit's one end, and the other end ground connection, the high-voltage wire is passed through to current detection unit's centre bore.
Preferably, the voltage detection unit is specifically an overvoltage sensor, the overvoltage sensor specifically includes a composite insulating housing, a high-voltage arm capacitor and a low-voltage arm capacitor, and the high-voltage arm capacitor and the low-voltage arm capacitor are connected in series and are both embedded in the composite insulating housing.
Preferably, the low-voltage arm capacitor specifically includes a plurality of non-inductive capacitors, and the plurality of capacitors are connected in parallel in sequence.
Preferably, the current detection unit is specifically an overcurrent sensor, and the overcurrent sensor includes an electromagnetic induction coil and an insulating housing, and the electromagnetic induction coil is embedded in the insulating housing.
Preferably, the composite insulating shell is made of a silicone rubber material.
Preferably, the constituent material of the insulating housing is an epoxy material.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides an overvoltage overcurrent measuring device for distribution lines, includes: the voltage detection unit and the current detection unit, the high-voltage wire is connected to voltage detection unit's one end, and the other end ground connection, the high-voltage wire is passed through to current detection unit's centre bore. In this application, detect the voltage parameter and the current parameter of high-voltage wire through voltage detecting element and current detecting element respectively to the realization is to the high-speed measurement of full waveform of distribution lines overvoltage overcurrent.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an overvoltage and overcurrent measurement of a distribution line provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a current detection unit for measuring an overvoltage and an overcurrent of a distribution line according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a voltage detection unit for measuring an overvoltage and an overcurrent of a distribution line according to an embodiment of the present application.
Detailed Description
The application discloses an overvoltage overcurrent measuring device for distribution lines detects the voltage parameter and the current parameter of distribution lines through voltage detecting element and current detecting element respectively to the realization is to the high-speed measurement of the full wave form of the overvoltage overcurrent of distribution lines.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram illustrating an over-voltage and over-current measurement of a distribution line according to an embodiment of the present disclosure; fig. 2 is a schematic structural diagram of a current detection unit for measuring an overvoltage and an overcurrent of a distribution line according to an embodiment of the present disclosure; fig. 3 is a schematic structural diagram of a voltage detection unit of a distribution line provided in an embodiment of the present application.
The application provides an overvoltage overcurrent measurement for a distribution line, comprising: the voltage detection unit and the current detection unit, one end of the voltage detection unit is connected with the high-voltage wire, the other end of the voltage detection unit is grounded, and a center hole of the current detection unit penetrates through the high-voltage wire.
Further, the voltage detection unit is specifically an overvoltage sensor, the overvoltage sensor specifically comprises a composite insulating shell, a high-voltage arm capacitor and a low-voltage arm capacitor, and the high-voltage arm capacitor and the low-voltage arm capacitor are connected in series and are both arranged in the composite insulating shell.
Furthermore, the low-voltage arm capacitor specifically comprises a plurality of non-inductive capacitors, and the plurality of capacitors are connected in parallel in sequence.
Further, the current detection unit is specifically an overcurrent sensor, the overcurrent sensor includes an electromagnetic induction coil and an insulating housing, and the electromagnetic induction coil is arranged in the insulating housing.
Furthermore, the composite insulating shell is made of a silicon rubber material.
Further, the insulating shell is made of epoxy materials.
The overvoltage and overcurrent measuring device for the distribution line mainly comprises an overvoltage sensor and an overcurrent sensor. The overvoltage sensor mainly comprises a composite insulating shell, a high-voltage arm capacitor and a low-voltage arm capacitor, and can realize low-voltage (hundred-volt magnitude) change of an input high-voltage signal (hundred-kilovolt magnitude). The composite insulating shell ensures that the overvoltage sensor can safely, reliably and long-term operate in an outdoor environment. The high-voltage arm capacitance is in pF magnitude, so that the leakage current of the overvoltage sensor is at a very low level when the distribution line is in normal live operation, the low-voltage arm capacitance is in mu F magnitude and is formed by connecting a plurality of non-inductive capacitors in parallel, and the high-voltage arm capacitance and the low-voltage arm capacitance are connected in series to realize high-voltage transformation. The overcurrent sensor is composed of an electromagnetic induction coil and a high-voltage insulation module, the electromagnetic induction coil realizes overcurrent non-contact measurement by utilizing the principle of electromagnetic induction, and the installation is convenient. The high-voltage insulation module is made of epoxy materials, the electromagnetic induction coil is placed in the insulation module, insulation and isolation of the electromagnetic induction coil and the high-voltage power transmission line are achieved, and low-voltage (volt magnitude) change of a large-current overcurrent signal (kilo-ampere magnitude) of the power transmission line can be achieved. The overvoltage sensor and the overcurrent sensor can realize outdoor long-term electrified detection of overvoltage and overcurrent of the distribution line, and provide stable and reliable sensors for online monitoring of overvoltage and overcurrent of the distribution line.
While the overvoltage/overcurrent measuring device for power distribution lines provided by the present application has been described in detail, it will be apparent to those skilled in the art that the embodiments and applications of the device can be modified according to the spirit of the present application.
Claims (6)
1. An overvoltage overcurrent measurement device for a power distribution line, comprising: the voltage detection unit and the current detection unit, the high-voltage wire is connected to voltage detection unit's one end, and the other end ground connection, the high-voltage wire is passed through to current detection unit's centre bore.
2. The over-voltage and over-current measurement device for the distribution line according to claim 1, wherein the voltage detection unit is an over-voltage sensor, and the over-voltage sensor comprises a composite insulation housing, a high-voltage arm capacitor and a low-voltage arm capacitor, and the high-voltage arm capacitor and the low-voltage arm capacitor are connected in series and are both embedded in the composite insulation housing.
3. The over-voltage and over-current measurement device for the distribution line of claim 2, wherein the low-voltage arm capacitor comprises a plurality of non-inductive capacitors, and the plurality of capacitors are connected in parallel in sequence.
4. The over-voltage and over-current measurement device for the distribution line according to claim 1, wherein the current detection unit is an over-current sensor, and the over-current sensor comprises an electromagnetic induction coil and an insulating housing, and the electromagnetic induction coil is internally arranged in the insulating housing.
5. The over-voltage and over-current measurement device for the distribution line of claim 2, wherein the composite insulating casing is made of a silicone rubber material.
6. The over-voltage over-current measurement device for a distribution line of claim 4, wherein the insulating casing is formed of an epoxy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920661178.9U CN210037956U (en) | 2019-05-09 | 2019-05-09 | Overvoltage and overcurrent measuring device for distribution line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920661178.9U CN210037956U (en) | 2019-05-09 | 2019-05-09 | Overvoltage and overcurrent measuring device for distribution line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210037956U true CN210037956U (en) | 2020-02-07 |
Family
ID=69364439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920661178.9U Active CN210037956U (en) | 2019-05-09 | 2019-05-09 | Overvoltage and overcurrent measuring device for distribution line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210037956U (en) |
-
2019
- 2019-05-09 CN CN201920661178.9U patent/CN210037956U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203772937U (en) | Broadband active flexible coil capable of simultaneously detecting lightning current and power frequency alternating current | |
| CN204495898U (en) | A kind of transformer superpotential on-line monitoring system | |
| CN211603509U (en) | Novel leakage current detection circuit | |
| CN102175923A (en) | Transmission line dynamic loss measurement system and method | |
| Yang et al. | Measurement of lightning-induced overvoltage in power distribution lines using ceramic-capacitor insulator | |
| CN203658448U (en) | Overvoltage monitoring sensor for bushing | |
| CN105548626B (en) | A kind of impulse electric field generation device | |
| CN207964962U (en) | A kind of electric lightning digitlization on-Line Monitor Device | |
| CN210037956U (en) | Overvoltage and overcurrent measuring device for distribution line | |
| CN201311836Y (en) | Electronic voltage transformer | |
| CN206223915U (en) | A kind of ground insulator discharge monitoring device of double-current sensor | |
| CN2600819Y (en) | Device for measuring voltage and current of high-tension switch equipment | |
| CN203519735U (en) | Electrostatic detection apparatus | |
| CN207516494U (en) | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity | |
| CN203324357U (en) | Electronic voltage transformer used for detecting high voltage resistor current | |
| CN204188724U (en) | A kind of on-line measurement device of electric power system surge protector insulation resistance | |
| CN207851151U (en) | A kind of thin-film capacitor insulation resistance test circuit | |
| CN204228876U (en) | Ground detection device | |
| CN209472564U (en) | A kind of power-switching circuit of wireless temperature measuring device | |
| CN207248971U (en) | Comprehensive sensor | |
| CN209046369U (en) | A kind of electric energy collection device | |
| CN103389401B (en) | A kind of electric network voltage detection device | |
| CN101640124B (en) | Suspended capacitor voltage transformer | |
| CN207440167U (en) | A kind of transformer transient overvoltage and casing dielectric loss signal synchronous collection device | |
| CN104345196A (en) | Active weak power frequency current induction coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |