CN217846512U - Electro-optical attenuation characteristic testing machine for large-current photoelectric composite cable - Google Patents
Electro-optical attenuation characteristic testing machine for large-current photoelectric composite cable Download PDFInfo
- Publication number
- CN217846512U CN217846512U CN202221669186.6U CN202221669186U CN217846512U CN 217846512 U CN217846512 U CN 217846512U CN 202221669186 U CN202221669186 U CN 202221669186U CN 217846512 U CN217846512 U CN 217846512U
- Authority
- CN
- China
- Prior art keywords
- composite cable
- photoelectric composite
- optical fiber
- current
- temperature
- 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
Abstract
The utility model discloses a large-current photoelectric composite cable electric light attenuation characteristic testing machine, which comprises a current loading component, a temperature measurement and control component, an optical fiber attenuation testing component and a main controller; the current loading assembly is connected with the photoelectric composite cable in a matching way; the input ends of the temperature measurement and control component and the optical fiber attenuation testing component are respectively connected with the photoelectric composite cable in a matching way; the output ends of the temperature measurement and control assembly and the optical fiber attenuation testing assembly are respectively connected with a main control unit. The temperature dependence of signal attenuation under the heavy current loading state of photoelectric composite cable is detected through the cooperation between three major components of current loading system, temperature measurement and control subassembly and optical fiber attenuation test assembly to this scheme, and this scheme simple structure can improve the reliability in the testing process.
Description
Technical Field
The utility model relates to the field of communication technology, concretely relates to test machine through heavy current test to photoelectric composite cable lightning attenuation characteristic.
Background
The photoelectric composite cable composite conductor and the optical fiber unit can synchronously carry out electric energy transmission and optical signal transmission, when the conductor has high current loading or short circuit fault to cause the temperature of the conductor to rise, the thermal expansion coefficients of all materials formed by the composite cable are different, and the optical fiber in the photoelectric composite cable is bent or tensioned to cause the energy attenuation characteristic change generated by optical signal transmission, so that the temperature dependence of the signal attenuation of the photoelectric composite cable in a high current loading state needs to be detected through a testing machine.
However, the existing testing machine has a complex structure, so that the reliability of detection and the accuracy of data cannot be guaranteed in the process of detecting the photoelectric composite cable.
Therefore, how to improve the reliability of the testing machine in the detection process is a problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
To the not high technical problem of stability in current photoelectricity composite cable during operation under the heavy current loading, the utility model aims to provide a heavy current photoelectricity composite cable electro-optical attenuation characteristic testing machine, its simple structure consequently can improve the reliability of testing machine in the testing process greatly, has overcome the problem that prior art exists well.
In order to achieve the purpose, the utility model provides a heavy current photoelectric composite cable electro-optic attenuation characteristic testing machine which is characterized by comprising a current loading assembly, a temperature measurement and control assembly, an optical fiber attenuation testing assembly and a main controller; the current loading assembly is connected with the photoelectric composite cable in a matching way; the input ends of the temperature measurement and control component and the optical fiber attenuation testing component are respectively connected with the photoelectric composite cable in a matching way; the output ends of the temperature measurement and control assembly and the optical fiber attenuation testing assembly are respectively connected with a main control unit.
Further, the current loading assembly comprises a current controller, an induction voltage regulator, a compensator and a feedthrough transformer; the current controller is connected with the input end of the induction voltage regulator and the compensator to form a loop; the output end of the induction voltage regulator is connected with the input end of the feedthrough transformer, and the photoelectric composite cable sample passes through the feedthrough transformer to form a loop to form the output end of the feedthrough transformer.
Furthermore, the temperature measurement and control assembly comprises a temperature controller and a temperature sensor; the temperature sensor penetrates through the photoelectric composite cable sample sheath to be in contact with the sample conductor; the input end of the temperature controller is connected with the temperature sensor; and the output end of the temperature controller is connected with the main controller.
Further, the optical fiber attenuation testing component comprises an optical time domain reflectometer and an optical drop cable; the input end of the optical time domain reflectometer is connected with the photoelectric composite cable sample optical fiber through the lead-in optical cable; and the output end of the optical time domain reflector is connected with the main controller.
The high-current photoelectric composite cable electro-optic attenuation characteristic testing machine provided by the scheme detects the temperature dependence of signal attenuation of the photoelectric composite cable under a high-current loading state by matching the three parts of the temperature measurement and control assembly and the optical fiber attenuation testing assembly through the current loading system, and is simple in structure and capable of improving the reliability in the detection process.
Drawings
The invention is further described with reference to the following drawings and detailed description.
Fig. 1 is an overall structure schematic diagram of the photoelectric composite cable photoelectric attenuation characteristic testing machine.
Fig. 2 is a schematic structural diagram of a current control component in the photoelectric composite cable photoelectric attenuation characteristic testing machine.
The following are references describing the components in the drawings:
1. the device comprises a main controller 2, a current controller 3, an induction voltage regulator 4, an optical time domain reflectometer 5, a compensator 6, a lead-in cable 7, a feed-through transformer 8, a sample disc 9, an optical-electric composite cable sample 10, a temperature controller 11 and a temperature sensor.
Detailed Description
In order to make the technical means, creation characteristics, achievement purpose and efficacy of the utility model easy to understand and understand, the utility model is further explained by combining with the specific figure below.
The photoelectric composite cable comprises a composite conductor and an optical fiber unit, and can transmit electric energy and optical signals, when the temperature of the cable conductor and the optical fiber is increased due to large-current loading, short-circuit fault and the like, the optical fiber is bent or tensioned due to different thermal expansion coefficients of the composite optical fiber, a metal material and a sheath material, and the energy attenuation characteristic change is generated in optical fiber signal transmission.
Aiming at the technical problem that the reliability of a detected result is not high due to the complex detection structure when the attenuation temperature correlation of the existing photoelectric composite cable is detected, the scheme provides the testing machine for testing the photoelectric attenuation characteristic of the photoelectric composite cable through the large current, the structure is simple, and the reliability of the testing machine in the detection process can be greatly improved.
Therefore, referring to fig. 1, the scheme provides a testing machine for testing the electro-optic attenuation characteristics of a photoelectric composite cable through large current, and the testing machine comprises a current loading component, a temperature measurement and control component, an optical fiber attenuation testing component and a main controller.
The current loading assembly simulates large current loading on the photoelectric composite cable and controls the conductor temperature to change periodically, the temperature measurement and control assembly and the optical fiber attenuation testing assembly measure the conductor temperature and the optical fiber signal energy attenuation signals synchronously, and measured conductor temperature data and measured optical fiber signal energy attenuation variable quantity data are output to the terminal controller.
The current loading assembly comprises a current controller 2, an induction voltage regulator 3, a compensator 5 and a feedthrough transformer 7; the current controller 2, the induction voltage regulator 3, the compensator 5 and the feed-through transformer 7 are mutually matched and connected to form a current loading assembly, and the overload current of the test loop can be generated and controlled.
Referring to fig. 2, the current controller 2 is connected to the input terminal of the induction voltage regulator 3 and the compensator 5 to form a loop, wherein the current controller 2 and the induction voltage regulator 3 cooperate to control and regulate the current and the voltage of the current in the circuit.
The compensator is connected in series in the circuit where the current controller 2 and the induction voltage regulator 3 are located, so that the power supply rate in the circuit can be ensured, and the stability of the circuit in use is improved.
The output end of the induction voltage regulator 3 is connected with the input end of the feedthrough transformer 7, and the photoelectric composite cable sample passes through the feedthrough transformer 7 to form a loop to form the output end of the feedthrough transformer 7.
And (3) the photoelectric composite cable sample passes through the feed-through transformer 7 and is communicated with the conductor of the cable, the conductor forms a closed loop, and low voltage and strong current pass through the conductor to generate heat.
The temperature measurement and control component comprises a temperature controller 10 and a temperature sensor 11; the temperature controller 10 and the temperature sensor 11 are mutually matched to form a temperature measurement and control assembly for measuring and controlling the temperature of the composite conductor.
The temperature sensor 11 is in contact with the sample conductor through the sheath of the optoelectric composite cable sample, and is configured to measure the temperature of the optoelectric composite cable sample and transmit the measured temperature data to the temperature controller 10.
The input end of the temperature controller 10 is connected to the temperature sensor 11 for receiving the temperature data measured by the temperature sensor 11. The temperature controller 11 is connected with the main controller, and feeds back the received temperature data of the photoelectric composite cable sample to the main controller 10.
The optical fiber attenuation testing component comprises an optical time domain reflectometer 4 and an optical drop cable 6; the optical time domain reflectometer 4 and the lead-in optical cable 6 are mutually matched to form an optical fiber attenuation testing assembly for measuring the attenuation variation of the sample optical fiber unit.
The optical time domain reflectometer 4 is connected with the photoelectric composite cable sample optical fiber through the optical fiber of the lead-in optical cable 6 and is used for measuring the signal energy attenuation change of the photoelectric composite cable sample optical fiber along with the temperature change.
The optical time domain reflectometer 4 is connected with the main controller 1, and feeds back the measured optical fiber signal energy attenuation change of the photoelectric composite cable sample to the main controller 1.
The main controller 1 is a terminal and is used for receiving temperature change data which are measured by the temperature measurement and control assembly and the optical fiber attenuation testing assembly and accord with the conductor and the energy attenuation variable quantity of the optical fiber signal and forming a temperature-attenuation characteristic curve.
The working process of the scheme in use is illustrated below; it should be noted that the following description is only a specific application example of the present solution and is not intended to limit the present solution.
First, the test environment temperature was set to 23 ℃ ± 3 ℃, and the photoelectric composite cable sample was placed in the environment for 16 hours or more.
And then winding a photoelectric composite cable sample 9 on a sample disc 8, enabling one end of the photoelectric composite cable sample to penetrate through the feed-through transformer 7, connecting sample conductors in parallel, connecting the sample conductors end to form a loop, and heating the photoelectric composite cable sample.
And drilling a temperature measuring hole with the diameter of 5mm at a position 1m away from the joint of the composite cable, wherein the temperature measuring hole penetrates through the sheath of the composite cable and the insulating layer of one cable core, and the temperature sensor 11 is inserted into the temperature measuring hole and fully contacted with the conductor. The drilling should not damage the optical fiber units of the composite cable;
the attenuation testing component is connected with an optical fiber unit of the composite cable sample 9 to measure and record initial attenuation;
a current loading component of the testing machine applies 2-3 times of overload current to a composite cable sample 9 loop through a main controller 1, and a temperature measurement and control component controls the temperature of a conductor within a preset range according to a set program; the attenuation testing component measures attenuation values of the optical fiber unit of the composite cable sample 9 at different temperatures in real time;
the main controller 1 receives and displays the sample conductor temperature and the optical fiber attenuation feedback of the temperature measuring assembly and the optical fiber attenuation testing assembly.
The testing machine for testing the electro-optic attenuation characteristic of the photoelectric composite cable through the large current, which is formed by the scheme, simulates the large current loading of the photoelectric composite cable through the current loading system, controls the conductor temperature to periodically change, synchronously measures the conductor temperature and the attenuation change information of the optical fiber signal energy through the temperature sensor and the attenuation testing component, and detects the temperature dependence of the signal attenuation of the photoelectric composite cable in the large current loading state.
The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A testing machine for the electro-optic attenuation characteristic of a large-current photoelectric composite cable is characterized by comprising a current loading assembly, a temperature measurement and control assembly, an optical fiber attenuation testing assembly and a main controller; the current loading assembly is connected with the photoelectric composite cable in a matching way; the input ends of the temperature measurement and control component and the optical fiber attenuation testing component are respectively connected with the photoelectric composite cable in a matching way; the output ends of the temperature measurement and control assembly and the optical fiber attenuation testing assembly are respectively connected with the main control unit.
2. The testing machine for the electro-optic attenuation characteristic of the large-current photoelectric composite cable according to claim 1, wherein the current loading assembly comprises a current controller, an induction voltage regulator, a compensator and a feedthrough transformer; the current controller is connected with the input end of the induction voltage regulator and the compensator to form a loop; the output end of the induction voltage regulator is connected with the input end of the feedthrough transformer, and the photoelectric composite cable sample passes through the feedthrough transformer to form a loop, so as to form the output end of the feedthrough transformer.
3. The testing machine for the electro-optic attenuation characteristic of the large-current photoelectric composite cable according to claim 1, wherein the temperature measurement and control assembly comprises a temperature controller and a temperature sensor; the temperature sensor penetrates through the photoelectric composite cable sample sheath to be in contact with the sample conductor; the input end of the temperature controller is connected with the temperature sensor; and the output end of the temperature controller is connected with the main controller.
4. The electro-optic attenuation characteristic testing machine for the large-current photoelectric composite cable according to claim 1, wherein the optical fiber attenuation testing component comprises an optical time domain reflectometer and an incoming optical cable; the input end of the optical time domain reflectometer is connected with the photoelectric composite cable sample optical fiber through the lead-in optical cable; and the output end of the optical time domain reflectometer is connected with the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221669186.6U CN217846512U (en) | 2022-06-29 | 2022-06-29 | Electro-optical attenuation characteristic testing machine for large-current photoelectric composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221669186.6U CN217846512U (en) | 2022-06-29 | 2022-06-29 | Electro-optical attenuation characteristic testing machine for large-current photoelectric composite cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217846512U true CN217846512U (en) | 2022-11-18 |
Family
ID=84026370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221669186.6U Active CN217846512U (en) | 2022-06-29 | 2022-06-29 | Electro-optical attenuation characteristic testing machine for large-current photoelectric composite cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217846512U (en) |
-
2022
- 2022-06-29 CN CN202221669186.6U patent/CN217846512U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1844941B (en) | Photoelectric integrated strong electric field measuring system | |
| CN102169028B (en) | System for measuring temperature in thyristor in real time | |
| CN111239532A (en) | Copper-aluminum cable current-carrying capacity and temperature rise testing method | |
| CN103048557B (en) | Optical phase conductor allows current-carrying capacity performance test apparatus and test method thereof | |
| CN217846512U (en) | Electro-optical attenuation characteristic testing machine for large-current photoelectric composite cable | |
| CN102565509B (en) | Multi-light-path reflecting optical fiber current sensor | |
| CN104635010A (en) | All-fiber optical current transformer detection system | |
| CN111880111A (en) | Leakage current measuring device, system and method for high-voltage direct current cable | |
| CN111307196B (en) | Distributed electric heating annealing and photo-thermal annealing radiation-resistant method and system | |
| CN103529318B (en) | A kind of instantaneous temperature of optical fiber composite low-voltage cable and loss test macro | |
| Tian et al. | An improved optically based PD detection system for continuous on-line monitoring of HV cables | |
| CN109687902B (en) | Key parameter extraction device of photoelectric electro-optical device | |
| CN114460350A (en) | All-fiber current transformer with optical path state self-diagnosis function and self-diagnosis method | |
| CN108089118A (en) | High voltage direct current converter valve thyristor component presses loop parameter Simple measurement device | |
| CN209279996U (en) | Multi-channel optical fibre current sensor based on wavelength-division multiplex | |
| CN115494337A (en) | Test method for optical attenuation characteristics of high-current photoelectric composite cable | |
| CN107422166B (en) | Modulation and demodulation method for suppressing light power fluctuation for optical fiber current transformer | |
| CN105300450A (en) | Novel cable detection device | |
| CN216013476U (en) | Measuring system for no-load current and no-load voltage of transformer | |
| CN209727156U (en) | A kind of OPLC flattens the device of experiment fibre strain and synchro measure of decaying | |
| CN213960073U (en) | Light intensity modulation radio frequency signal phase consistency measuring device | |
| CN102820921A (en) | Method for improving optical fiber OTDR (optical time domain reflectometry) test performance | |
| CN102841245A (en) | Device for detecting end screen current parameter of high-voltage transformer bushing in real time, and control method for device | |
| CN204085846U (en) | A kind of narrow line-width wavelengths tunable optical domain reflectometer | |
| CN209182384U (en) | Fibre optic current sensor based on hanging graphene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |