CN210780795U - Distributed optical fiber multi-parameter measurement light distribution control device of power optical cable network - Google Patents
Distributed optical fiber multi-parameter measurement light distribution control device of power optical cable network Download PDFInfo
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- CN210780795U CN210780795U CN201922146322.8U CN201922146322U CN210780795U CN 210780795 U CN210780795 U CN 210780795U CN 201922146322 U CN201922146322 U CN 201922146322U CN 210780795 U CN210780795 U CN 210780795U
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Abstract
The utility model discloses a distribution type optic fibre multi-parameter measurement grading controlling means of power optical cable net, its characterized in that: the control device comprises a wavelength division multiplexer, an optical switch module, an optical switch matrix and a main control system; the wavelength division multiplexer is provided with a communication channel, a distributed optical fiber disturbance dynamic measurement channel and a communication optical channel, and the communication optical channel is connected with the optical switch matrix; the wavelength division multiplexer is used for multiplexing the communication channel and the distributed optical fiber disturbance dynamic measurement channel to a communication optical channel; the optical switch module is provided with a sensing optical channel and a plurality of distributed optical fiber quasi-static measurement channels; the optical switch module is controlled by the main control system and is used for switching optical paths of a plurality of distributed optical fiber quasi-static measurement channels and then accessing the distributed optical fiber quasi-static measurement channels to the sensing optical channel; the optical switch matrix is controlled by the main control system to switch among a plurality of tested power optical cables; can be widely applied to the fields of electric power and the like.
Description
Technical Field
The utility model relates to an electric power optical cable net especially relates to a distributing type optic fibre multi-parameter measurement grading controlling means of electric power optical cable net.
Background
In recent years, power systems have also been shifted from carrier-wave and microwave-based communication systems to optical-fiber-based communication systems, and huge dedicated power optical-fiber communication networks have been built. Optical fiber communication is rapidly developed in an electric power system and becomes a main communication mode for various services such as dispatching telephone, automation data, relay protection, information network and the like. In production practice, the detection of power system cables has a requirement for long distances and even ultra-long distances. Over time, the failure frequency of the optical cable laid in the early stage is higher and higher, so that the on-line monitoring and failure detection of the optical cable become more and more important. The traditional optical cable line maintenance and management mainly implements real-time monitoring on an optical cable through an optical power meter, is assisted by a testing technology such as Optical Time Domain Reflectometry (OTDR), is difficult to find faults, has long troubleshooting time, cannot adapt to long-distance optical cable detection, is seriously lagged behind the development of power optical cables, and causes potential safety hazards to the safety production of a power grid. Or at the expense of accuracy, if detectable. The optical fiber sensor networks used in the smart grid are mainly of two types: one is used for monitoring along the line, and a distributed optical fiber sensor network is mostly adopted; the other type is used for monitoring power grid equipment, small-sized electrical equipment mostly adopts a single-point sensor, and large-sized electrical equipment also adopts a distributed optical fiber sensor network. The method has a great technical gap between China and abroad in the aspects of long-distance cable temperature monitoring, simultaneous accurate measurement of multi-parameter data and the like. More importantly, the existing power optical cable line detection system does not effectively combine the distributed optical fiber multi-parameter intelligent light distribution technology, has the defects of difficulty in fault finding, slow fault response time, long troubleshooting time and the like, influences the normal work of a power communication network, and causes potential safety hazards to the safety production of a power grid.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a distributed optical fiber multi-parameter measurement grading control device of power optical cable net is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: a distributed optical fiber multi-parameter measurement light distribution control device of an electric power optical cable network is characterized in that: the control device comprises a wavelength division multiplexer, an optical switch module, an optical switch matrix and a main control system.
The wavelength division multiplexer is provided with a communication channel, a distributed optical fiber disturbance dynamic measurement channel and a communication optical channel, and the communication optical channel is connected with the optical switch matrix; the wavelength division multiplexer is used for multiplexing the communication channel and the distributed optical fiber disturbance dynamic measurement channel onto one communication optical channel.
The optical switch module is provided with a sensing optical channel and a plurality of distributed optical fiber quasi-static measurement channels; the sensing optical channel is connected with the optical switch matrix, and the optical switch module is controlled by the main control system and is used for switching optical paths of a plurality of distributed optical fiber quasi-static measurement channels and then accessing the optical channels.
And the optical switch matrix is controlled by the main control system and is used for switching among a plurality of tested power optical cables.
The main control system is used for controlling the optical switch matrix to select the tested power optical cable and controlling the optical switch module to selectively access the distributed optical fiber quasi-static measurement channel.
According to the utility model discloses a preferred scheme of distributed optical fiber multi-parameter measurement grading control device of power optical cable net, the photoswitch module is a four-out-of-one switch, carries out the light path switching to four different distributed optical fiber quasi-static measurement channels; the optical switch module is respectively connected to the existing optical fiber Raman distributed temperature measurement system, the optical fiber Brillouin distributed temperature stress monitoring system, the optical fiber damage time domain reflectometer and the optical fiber disturbance time domain reflectometer through the distributed optical fiber quasi-static measurement channel.
According to an optimal solution of distribution control device is measured to distributed optical fiber multi-parameter of power optical cable net, the photoswitch matrix is 2 x 8 matrix for switch between eight surveyed power optical cables.
According to a distributed optical fiber multi-parameter measurement grading controlling means's of power optical cable net preferred scheme, wavelength division multiplexer passes through distributed optical fiber vibration dynamic measurement channel and connects based on phase sensitive optical time domain reflectometer.
According to an optimal selection scheme of distribution control device is measured to distributed optical fiber multi-parameter of power optical cable net, main control system still controls optic fibre raman distributed temperature measurement system, optic fibre brillouin distributed temperature, stress monitoring system, optic fibre damage time domain reflectometer, optic fibre disturbance time domain reflectometer and based on phase sensitive optical time domain reflectometer respectively to read optic fibre raman distributed temperature measurement system, optic fibre brillouin distributed temperature, stress monitoring system, optic fibre damage time domain reflectometer, optic fibre disturbance time domain reflectometer and based on phase sensitive optical time domain reflectometer's data, handle the back output.
A distributed optical fiber multi-parameter measurement grading controlling means of power optical cable net's beneficial effect be: the utility model provides a distributed optical fiber multi-parameter measurement grading control device of electric power optical cable network can insert multiple distributed optical fiber sensing system in a flexible way to provide the intelligent light-operated prototype system that multi-parameter electric power optical cable network was surveyed, will break through traditional optical cable line and maintain the management mode, shorten the time of fault handling, reduce the economic loss that causes by optical cable line trouble, compensate the not enough of current system, have positive meaning to the safe and reliable operation of guarantee electric power communication optical cable network; the utility model has the characteristics of with low costs, stable performance, commonality are good, but wide application in fields such as electric power.
Drawings
Fig. 1 is a schematic circuit diagram of a distributed optical fiber multi-parameter measurement light distribution control device of an optical power cable network.
Fig. 2 is a circuit diagram of the optical switch module 2.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.
Referring to fig. 1 to 2, a distributed optical fiber multi-parameter measurement light distribution control device for an optical power cable network includes a wavelength division multiplexer 1, an optical switch module 2, an optical switch matrix 3, and a main control system 4.
The wavelength division multiplexer 1 is provided with a communication channel of 1.55 μm, a distributed optical fiber disturbance dynamic measurement channel of 1.31 μm and a communication optical channel, and the communication optical channel is connected with the optical switch matrix 3; the wavelength division multiplexer 1 is used for multiplexing a communication channel and a distributed optical fiber disturbance dynamic measurement channel onto a communication optical channel; the wavelength division multiplexer 1 is connected with a phase-sensitive optical time domain reflectometer 15 through a distributed optical fiber disturbance dynamic measurement channel. The communication channel, the distributed optical fiber disturbance dynamic measurement channel and the communication optical channel are all optical fibers and are used for transmitting communication signals.
The optical switch module 2 is provided with a sensing optical channel and a plurality of distributed optical fiber quasi-static measurement channels; the sensing optical channel is connected with the optical switch matrix 3, and the optical switch module 2 is controlled by the main control system 4 and is used for switching optical paths of a plurality of distributed optical fiber quasi-static measurement channels and then accessing the sensing optical channel.
The optical switch matrix 3 is controlled by the main control system 4 and is used for switching among a plurality of tested power optical cables.
And the main control system 4 is used for controlling the optical switch matrix 3 to select the tested power optical cable and controlling the optical switch module 2 to select to access the distributed optical fiber quasi-static measurement channel.
In a specific embodiment, the optical switch module 2 is a one-out-of-four switch, and switches optical paths of four different distributed optical fiber quasi-static measurement channels to be connected to a sensing optical channel; the optical switch module 2 can be respectively accessed to the existing optical fiber Raman distributed temperature measurement system 11, the optical fiber Brillouin distributed temperature and stress monitoring system 12, the optical fiber damage time domain reflectometer 13 and the optical fiber disturbance time domain reflectometer 14 through the distributed optical fiber quasi-static measurement channel.
The optical switch matrix 3 is a 2 x 8 matrix and is used for switching among eight tested power optical cables.
The wavelengths of the communication channel of the wavelength division multiplexer 1 and the distributed optical fiber disturbance dynamic measurement channel are respectively 1.31 μm and 1.55 μm; the wavelength division multiplexer 1 is connected with a phase-sensitive optical time domain reflectometer 15 through a distributed optical fiber vibration dynamic measurement channel.
The main control system 4 also respectively controls the start and the stop of the optical fiber Raman distributed temperature measurement system 11, the optical fiber Brillouin distributed temperature and stress monitoring system 12, the optical fiber damage time domain reflectometer 13, the optical fiber disturbance time domain reflectometer 14 and the phase-sensitive optical time domain reflectometer 15, and sets various main test parameters of the equipment, and reads the data of the optical fiber Raman distributed temperature measurement system 11, the optical fiber Brillouin distributed temperature and stress monitoring system 12, the optical fiber damage time domain reflectometer 13, the optical fiber disturbance time domain reflectometer 14 and the phase-sensitive optical time domain reflectometer 15, and outputs the data after processing.
The optical fiber Raman distributed temperature measurement system 11 is used for measuring the temperature of the tested power optical cable, the optical fiber Brillouin distributed temperature and stress monitoring system 12 is used for measuring the temperature and the pressure of the tested power optical cable, the optical fiber damage time domain reflector 13 is used for measuring the static optical fiber damage parameters of the tested power optical cable, the optical fiber disturbance time domain reflector 14 is used for measuring the optical fiber quasi-static disturbance parameters of the tested power optical cable, and the phase-sensitive optical time domain reflector 15 is used for measuring the dynamic parameters of the tested power optical cable, such as the vibration and sound waves of the optical fiber.
The utility model discloses a theory of operation does: after the master control system 4 completes gating control and setting of the channel, pulse laser emitted by a pulse light source inside the optical fiber raman distributed temperature measurement system 11, the optical fiber brillouin distributed temperature and stress monitoring system 12, the optical fiber damage time domain reflectometer 13 or the optical fiber disturbance time domain reflectometer 14, which are correspondingly connected with the gated channel, is transmitted to the optical switch module 2 through the optical fiber, and enters a sensing optical channel after being gated through the optical switch module 2, the sensing optical channel is also an optical fiber, and then enters one of the optical cables to be tested after being gated through the optical switch matrix 3. The pulse light receives the inherent scattering effect of optical fiber in the transmission process of the power optical cable to be measured, wherein the back scattering light is reversely transmitted back to the optical switch matrix 3 and the optical switch module 2 along the power optical cable, and then returns to the corresponding equipment along the way: the system comprises an optical fiber Raman distributed temperature measurement system 11, an optical fiber Brillouin distributed temperature and stress monitoring system 12, an optical fiber damage time domain reflectometer 13 or an optical fiber disturbance time domain reflectometer 14; and acquiring and processing the optical signal by corresponding equipment. Similarly, pulse laser emitted by a pulse light source inside the phase-sensitive optical time domain reflectometer 15 is transmitted to the wavelength division multiplexer 1 through an optical fiber, enters a communication optical channel formed by the optical fiber after being gated by the wavelength division multiplexer 1, and enters one of the electric power cables to be tested after being gated by the optical switch matrix 3, the pulse light is subjected to the inherent scattering effect of the optical fiber in the transmission process inside the electric power cable to be tested, wherein backscattered light is reversely transmitted back to the optical switch matrix 3 and the optical switch module 2 along the electric power cable, and then returns back to the phase-sensitive optical time domain reflectometer 15 along a path to collect and process optical signals. The main control system 4 reads data of the optical fiber Raman distributed temperature measurement system 11, the optical fiber Brillouin distributed temperature and stress monitoring system 12, the optical fiber damage time domain reflectometer 13, the optical fiber disturbance time domain reflectometer 14 and the phase-sensitive optical time domain reflectometer 15, processes the data and outputs the processed data.
Referring to fig. 2, the optical switch module 2 is composed of a single-chip MCU80C51 microcontroller, an ULN2003A stepper motor driver, four photoelectric switches, keys, and a communication interface.
The working principle of the optical switch module 2 is as follows: under the control of the singlechip U1, the stepping motor moves the relative positions of the incident optical fiber and the four emergent optical fibers to realize the switching of the optical paths. A coupling lens and a photoelectric switch are arranged at the end face of each emergent optical fiber. When the light path is switched, the stepping motor moves the incident optical fiber to the light path coupling point of a certain emergent optical fiber. At this time, the corresponding photoelectric switch is instantly turned off, and the singlechip U1 monitors the interrupt signal and controls the stepping motor to stop moving, thereby completing the switching process.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A distributed optical fiber multi-parameter measurement light distribution control device of a power optical cable network is characterized in that: the control device comprises a wavelength division multiplexer (1), an optical switch module (2), an optical switch matrix (3) and a main control system (4);
the wavelength division multiplexer (1) is provided with a communication channel, a distributed optical fiber disturbance dynamic measurement channel and a communication optical channel, and the communication optical channel is connected with the optical switch matrix (3); the wavelength division multiplexer (1) is used for multiplexing a communication channel and a distributed optical fiber disturbance dynamic measurement channel onto a communication optical channel;
the optical switch module (2) is provided with a sensing optical channel and a plurality of distributed optical fiber quasi-static measurement channels; the sensing optical channel is connected with the optical switch matrix (3), and the optical switch module (2) is controlled by the main control system (4) and is used for switching optical paths of a plurality of distributed optical fiber quasi-static measurement channels and then accessing the optical channels;
the optical switch matrix (3) is controlled by the main control system (4) and is used for switching among a plurality of tested power optical cables;
the main control system (4) is used for controlling the optical switch matrix (3) to select the tested power optical cable and controlling the optical switch module (2) to select to be connected to the distributed optical fiber quasi-static measurement channel.
2. The distributed optical fiber multi-parameter measurement light distribution control device of the power optical cable network according to claim 1, characterized in that: the optical switch module (2) is a switch with one out of four, and switches the optical paths of four different distributed optical fiber quasi-static measurement channels; the optical switch module (2) is respectively connected to the existing optical fiber Raman distributed temperature measurement system, the optical fiber Brillouin distributed temperature stress monitoring system, the optical fiber damage time domain reflectometer and the optical fiber disturbance time domain reflectometer through the distributed optical fiber quasi-static measurement channel.
3. The distributed optical fiber multi-parameter measurement light distribution control device of the power optical cable network according to claim 1, characterized in that: the optical switch matrix (3) is a 2 x 8 matrix and is used for switching among eight tested power optical cables.
4. The distributed optical fiber multi-parameter measurement light distribution control device of the power optical cable network according to claim 1, characterized in that: the wavelength division multiplexer (1) is connected with a phase-sensitive optical time domain reflectometer (15) through a distributed optical fiber vibration dynamic measurement channel.
5. The distributed optical fiber multi-parameter measurement light distribution control device of the power optical cable network according to claim 2, characterized in that: the main control system (4) is used for controlling the optical fiber Raman distributed temperature measurement system (11), the optical fiber Brillouin distributed temperature and stress monitoring system (12), the optical fiber damage time domain reflector (13), the optical fiber disturbance time domain reflector (14) and the phase-sensitive-based optical time domain reflector (15) respectively, reading data of the optical fiber Raman distributed temperature measurement system (11), the optical fiber Brillouin distributed temperature and stress monitoring system (12), the optical fiber damage time domain reflector (13), the optical fiber disturbance time domain reflector (14) and the phase-sensitive-based optical time domain reflector (15), and outputting the data after processing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964301A (en) * | 2021-02-09 | 2021-06-15 | 广东电网有限责任公司 | Monitoring method, device, system, equipment and storage medium of power pipeline |
| CN116112073A (en) * | 2023-04-10 | 2023-05-12 | 广东电网有限责任公司佛山供电局 | Parameter acquisition and transmission method and device for electric power communication optical cable |
| CN116560006A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Optical fiber remote automatic switching device, method and equipment |
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2019
- 2019-12-04 CN CN201922146322.8U patent/CN210780795U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964301A (en) * | 2021-02-09 | 2021-06-15 | 广东电网有限责任公司 | Monitoring method, device, system, equipment and storage medium of power pipeline |
| CN116112073A (en) * | 2023-04-10 | 2023-05-12 | 广东电网有限责任公司佛山供电局 | Parameter acquisition and transmission method and device for electric power communication optical cable |
| CN116560006A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Optical fiber remote automatic switching device, method and equipment |
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