CN113452435A - Difunctional power optical cable network line detection system and method - Google Patents
Difunctional power optical cable network line detection system and method Download PDFInfo
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- CN113452435A CN113452435A CN202110879911.6A CN202110879911A CN113452435A CN 113452435 A CN113452435 A CN 113452435A CN 202110879911 A CN202110879911 A CN 202110879911A CN 113452435 A CN113452435 A CN 113452435A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 218
- 238000001514 detection method Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000006854 communication Effects 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000013307 optical fiber Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000253 optical time-domain reflectometry Methods 0.000 claims 4
- 230000009977 dual effect Effects 0.000 claims 2
- 238000013024 troubleshooting Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
Abstract
A difunctional power optical cable network line detection system and a method relate to the field of power system optical fiber communication and solve the problems that an existing optical cable line based on an Optical Time Domain Reflectometer (OTDR) monopolizes a fiber core detection mode, wastes optical fiber core resources of the line and increases detection cost; the optical cable line working fiber core online detection mode based on optical power can only provide optical cable line light receiving optical path fault alarm, needs manual fault detection, cannot identify faults occurring at line optical cable positions, solves the problems of long-time interruption and extension of optical fiber communication caused by long troubleshooting time and the like, and comprises main equipment and N pieces of slave equipment, wherein the main equipment is used for online detection of N optical cable lines between a main transformer station and N transformer stations; the N detection units share the control processor, the optical switch and the OTDR; the control processor is connected with the optical switch and the OTDR through the electrical interface respectively. This novel improve detecting system operational reliability, guarantee power optical cable net steady operation has satisfied the detection demand.
Description
Technical Field
The invention relates to the field of optical fiber communication of a power system, in particular to a system and a method for detecting lines of a difunctional power optical cable network.
Background
The network topology structure of the power optical cable network is complex, the laying environment is complex, and the geographic area is large, so that the operation, maintenance and overhaul of the optical fiber communication network of the power system are difficult. Once a power optical cable network circuit breaks down, communication interruption is caused to influence the safe operation of a power system, and economic loss is caused to power enterprises. The existing optical cable line on-line monitoring mode based on optical power can only provide line fault alarm, cannot provide detection information and has a false alarm condition; optical cable line detection based on an Optical Time Domain Reflectometer (OTDR) wastes valuable optical fiber core resources of the optical cable line because the optical fiber core needs to be monopolized for online line detection, and the construction requirements of an electric power optical cable network of an energy internet cannot be met. Therefore, the prior art is difficult to meet the detection requirement of the optical cable network line of the power system.
Therefore, the optical cable network line detection of the power system needs to carry out on-line detection on the optical cable network optical cable line, so that the influence on normal communication of the key line of the power optical cable gateway is avoided, meanwhile, the reliability of the on-line detection of the optical cable network is improved, the time duration of fault detection of the optical cable line is shortened, and the intelligent degree of the on-line detection of the optical cable line is improved.
Disclosure of Invention
The invention provides a difunctional power optical cable network line detection system and method for solving the problems that an existing optical cable line based on an Optical Time Domain Reflectometer (OTDR) monopolizes a fiber core detection mode, wastes optical fiber core resources of the line and increases detection cost, an optical cable line working fiber core on-line detection mode based on optical power can only provide optical cable line light receiving optical path fault warning, manual fault detection is needed, faults can not be identified to occur at the position of a line optical cable, long fault duration is checked, long-time optical fiber communication interruption and extension are caused, and the like.
The detection system realizes the communication of a light receiving optical path and the communication of a light emitting optical path in the optical cable, and realizes the simultaneous online detection of the light emitting optical path and the light receiving optical path in the optical cable under the optical communication condition;
the detection system comprises a main device and N slave devices, wherein the main device is arranged in a main substation, and the N slave devices are respectively and correspondingly arranged in N substations;
the main equipment consists of a control processor, an optical switch, an OTDR and N detection units and is used for carrying out online detection on N optical cable lines between the main substation and N substations, and one detection unit and one slave equipment together complete the online detection of a corresponding optical cable line;
the N detection units share a control processor, an optical switch and an OTDR; the control processor is respectively connected with the optical switch and the OTDR through an electrical interface;
each detection unit comprises a first wavelength division multiplexer, a second wavelength division multiplexer and an attenuator;
each slave device includes a third wavelength division multiplexer and a fourth wavelength division multiplexer;
and the control processor is accessed to a data transmission network of the power system through an RJ45 network port and is connected with the server to realize remote control of the main equipment.
The method for detecting the line of the difunctional power optical cable network is realized by the following processes:
the control processor is connected with the optical switch through a control OTDR optical interface, is connected with a multiplexing port of a first wavelength division multiplexer in a corresponding detection unit through an optical path 0 to an optical path 1 of the control optical switch, injects detection light with 1625nm wavelength, is connected with a second optical distribution frame at a main equipment end to a trunk line of a first optical cable line through an optical outlet port of the first wavelength division multiplexer, is connected with an optical inlet port of a third wavelength division multiplexer corresponding to a slave equipment through a first optical distribution frame at the slave equipment end, is connected with a multiplexing port of a fourth wavelength division multiplexer through a demultiplexing port of the third wavelength division multiplexer, an optical outlet port of the fourth wavelength division multiplexer is connected with the trunk line of the first optical cable line through the first optical distribution frame of the slave equipment, and is connected with an optical inlet port of the second wavelength division multiplexer corresponding to the detection unit through a second optical distribution frame at the main equipment end, the optical fiber is connected to the attenuator through a demultiplexing port of the second wavelength division multiplexer, so that the on-line detection of the light-emitting optical path and the light-receiving optical path in the corresponding optical cable line under the communication condition is realized;
the control processor is sequentially connected to the first wavelength division multiplexers in the detection units of the main equipment in a circulating mode through the control optical switches, so that the light emitting optical path and the light receiving optical path of each optical cable line are sequentially detected, and the detection results are uploaded to the server through the control processor.
The invention has the beneficial effects that: the difunctional power optical cable network line detection system and the method thereof simultaneously detect a plurality of optical cable optical paths between a master station of a power system and a plurality of substations on line, and simultaneously detect the light emitting and the optical fiber core of the optical cable line on line, the optical cable communication optical path does not need to be cut off in the detection process, normal optical communication is not influenced, the problem that the optical fiber resources are wasted due to the fact that the optical cable line core is monopolized in the existing detection mode is solved, active devices such as an optical switch and the like do not exist in slave equipment, the operation reliability of the detection system is improved, the stable operation of the power optical cable network is guaranteed, and the detection requirement is met.
Drawings
Fig. 1 is a schematic structural diagram of a dual-function power cable network line detection system according to the present invention.
Detailed Description
First embodiment, the present embodiment is described with reference to fig. 1, which is a dual-function power optical cable network line detection system, the detection system implements communication of a light receiving optical path and communication of a light emitting optical path in an optical cable, and implements simultaneous online detection of the light emitting optical path and the light receiving optical path in the optical cable under optical communication conditions;
the system comprises a main device of a main transformer station and slave devices of N (N is 16) transformer stations, wherein N optical cable network lines of an electric power optical cable network are detected on line, the main device is installed in the main transformer station, the N slave devices respectively correspond to N different transformer stations, the main device comprises N detection units, a control processor, an optical switch and an OTDR (optical time domain reflectometer), a detection unit 1 and a detection unit 2 … share the control processor, the optical switch and the OTDR by the detection unit N, and a unit i (i is more than or equal to 1 and less than or equal to N) and a slave device i realize the on-line detection of a light emitting fiber core and a light receiving fiber core of an optical cable optical path i between the main transformer station and the transformer station i;
each detection unit has the same structure and comprises a wavelength division multiplexer 1, a wavelength division multiplexer 2 and an attenuator; all units share a control processor, an optical switch and an OTDR;
each substation slave device comprises a wavelength division multiplexer 3 and a wavelength division multiplexer 4, the structure of each substation slave device is the same, and a main device side Optical Distribution Frame (ODF) and a slave device side Optical Distribution Frame (ODF) are connected by using corresponding optical cable network lines;
the control processor is respectively connected with the OTDR and the optical switch through an electrical interface, is accessed into a power system data transmission network through an RJ45 network port, and is connected with the server to realize remote control.
In a second specific embodiment, this embodiment is a detection method of a line detection system for a dual-function power optical cable network described in the first specific embodiment, and the specific implementation process of the method is as follows:
the control processor is connected with the optical switch by controlling the OTDR optical interface, is connected with the port 3 of the wavelength division multiplexer 1 in the detection unit 1 by controlling the optical path 0 to the optical path 1 of the optical switch, injects detection light with 1625nm wavelength, the second ODF at the main equipment end is connected to the trunk of the optical cable line 1 through the light outlet port 2 of the wavelength division multiplexer 1, and further connected with the light inlet port 2 of the wavelength division multiplexer 3 of the slave device 1 through the first ODF of the slave device side, and then connected with a port 3 of a wavelength division multiplexer 4 through a port 3 of the wavelength division multiplexer 3, a port 2 of the wavelength division multiplexer 4 is connected to the trunk of the optical cable line 1 through a first ODF of the slave device 1, connected to the port 2 of the wavelength division multiplexer 2 of the detection unit 1 via the second ODF of the master device side, the port 3 of the wavelength division multiplexer 2 is connected to an attenuator, so that the on-line detection of the optical cable line 1 under the normal communication condition of the light emitting and receiving optical paths of the optical cable line 1 is realized;
the control processor is connected with the OTDR through an electrical interface, so that the detection data of the corresponding N optical cable lines between the main transformer station and the N transformer stations are sequentially and circularly acquired, and are uploaded to the server; the control processor is connected with the optical switch through an electrical interface, sequentially switched to the ports 3 of the wavelength division multiplexers 1 of the detection units, and injects detection light into the corresponding light-emitting fiber cores through controlling the OTDR, so that sequential on-line detection of the light-emitting light path and the light-receiving light path of each corresponding optical cable line is realized.
The method for detecting the line of the dual-function power optical cable network can realize automatic detection of 16 optical cable optical paths between a main substation and 16 substations of the power optical cable network, and comprises simultaneous detection of a light emitting fiber core and a light receiving fiber core of the optical cable optical path between a main station and each station.
In this embodiment, the optical switch is a 1 × 16 optical switch, the OTDR is an OTDR module, the wavelength division multiplexer 1 and the wavelength division multiplexer 4 are wavelength division multiplexer modules, and the wavelength division multiplexer 2 and the wavelength division multiplexer 3 are demultiplexer modules.
In this embodiment, the control processor is a single chip microcomputer of which the model is an STM8S103 series.
In this embodiment, the principle of normal communication between the light emitting optical path and the light receiving optical path of the optical cable line 1 is as follows: in fig. 1, a 1-path light-emitting fiber core 1 originating from an optical cable line 1 is connected to an 1310/1550nm wavelength light inlet port 1 of a wavelength division multiplexer 1 of a detection unit 1 in a master device, is connected to a trunk line of the optical cable line 1 through an optical outlet port 2 of the wavelength division multiplexer 1, is connected to an optical inlet port 2 of a wavelength division multiplexer 3 in a slave device 1, and is connected to a receiving end of the light-emitting fiber core 1 through an optical outlet port 1 of 1310/1550nm wavelength light of the wavelength division multiplexer 3, so as to implement normal optical communication of the 1-path light-emitting optical path of the optical cable line 1;
the 1-path light receiving fiber core 1 originating end from the optical cable line 1 is connected to the main trunk of the optical cable line 1 through the light inlet port 1 of 1310/1550nm wavelength light of the wavelength division multiplexer 4 and the light outlet port 2 of the wavelength division multiplexer 4, is accessed to the light inlet port 2 of the wavelength division multiplexer 2 of the detection unit 1 in the main device, and is connected to the light receiving fiber core 1 terminating end through the light outlet port 1 of the wavelength division multiplexer 2, so that the normal optical communication of the 1-path light receiving fiber core of the optical cable line 1 is realized.
In this embodiment, the online detection principle of the light emitting path and the light receiving path of the optical cable line 1 is as follows: in fig. 1, 1 light-emitting fiber core 1 from the optical cable line 1 is connected to an 1310/1550nm wavelength light input port 1 of a wavelength division multiplexer 1 of a detection unit 1 in a master device, is connected to a trunk of the optical cable line 1 through an light output port 2 of the wavelength division multiplexer 1, is connected to a light input port 2 of a wavelength division multiplexer 3 in a slave device 1, is connected to a 1625nm light input port 3 of a wavelength division multiplexer 4 through a 1625nm demultiplexing light port 3 of the wavelength division multiplexer 3, is connected to a trunk of the optical cable line 1 through a light output port 2 of the wavelength division multiplexer 4, is connected to a light input port 2 of the wavelength division multiplexer 2 in the master device unit 1, and is connected to an attenuator through a 1625nm demultiplexing light port 3 of the wavelength division multiplexer 2;
the server controls the optical switch selection optical path 0 to be connected to the optical path 1 through the control processor, controls the OTDR to inject detection light into a 1625nm optical multiplexing port 3 of the wavelength division multiplexer through the optical switch, and controls the OTDR to transmit the detection light into an optical input port 2 of the wavelength division multiplexer 3 of the slave 1 through the optical cable line 1 by the optical switch, and demultiplexes the detection light to a multiplexing port 3 of the wavelength division multiplexer 4 by the demultiplexing port 3 of the wavelength division multiplexer 3, and transmits the detection light to the optical input port 2 of the wavelength division multiplexer 2 in the unit 1 through the optical cable line 1 by the optical output port 2 of the wavelength division multiplexer 4, and demultiplexes the detection light by the demultiplexing port 3 of the wavelength division multiplexer 2, and at the moment, the optical cable line 1 is in an online detection mode;
the server controls the optical switch through the control processor, sequentially switches to the wavelength division multiplexer multiplexing port optical paths of the optical fiber cores of the optical cable lines, realizes online detection of the optical cable lines through OTDR, and uploads the detection result to the server.
Claims (6)
1. Difunctional power optical cable net circuit detecting system, characterized by: the detection system realizes the communication of the light receiving optical path and the communication of the light emitting optical path in the optical cable, and realizes the simultaneous on-line detection of the light emitting optical path and the light receiving optical path in the optical cable under the optical communication condition;
the detection system comprises a main device and N slave devices, wherein the main device is arranged in a main substation, and the N slave devices are respectively and correspondingly arranged in N substations;
the main equipment consists of a control processor, an optical switch, an OTDR and N detection units and is used for carrying out online detection on N optical cable lines between the main substation and N substations, and one detection unit and one slave equipment together complete the online detection of a corresponding optical cable line;
the N detection units share a control processor, an optical switch and an OTDR; the control processor is respectively connected with the optical switch and the OTDR through an electrical interface;
each detection unit comprises a first wavelength division multiplexer, a second wavelength division multiplexer and an attenuator;
each slave device includes a third wavelength division multiplexer and a fourth wavelength division multiplexer;
and the control processor is accessed to a data transmission network of the power system through an RJ45 network port and is connected with the server to realize remote control of the main equipment.
2. The dual function power cable network line detection system of claim 1, wherein: the transmitting end of the light-emitting fiber core and the receiving end of the light-receiving fiber core are both connected to the detection unit through an optical fiber distribution frame, and the two ends of the optical cable line are respectively connected to the detection unit and the slave equipment through the optical fiber distribution frame; and the light-emitting fiber core receiving end and the light-receiving fiber core transmitting end are both connected with the optical fiber distribution frame.
3. The dual function power cable network line detection system of claim 1, wherein: the optical switch is a 1 × 16 optical switch, the first wavelength division multiplexer and the fourth wavelength division multiplexer are wavelength division multiplexer modules, and the second wavelength division multiplexer and the third wavelength division multiplexer are demultiplexer modules.
4. The method of claim 1, wherein the method comprises the steps of: the method comprises the following concrete implementation processes:
the control processor is connected with the optical switch through a control OTDR optical interface, is connected with a multiplexing port of a first wavelength division multiplexer in a corresponding detection unit through an optical path 0 to an optical path 1 of the control optical switch, injects detection light with 1625nm wavelength, is connected with a second optical distribution frame at a main equipment end to a trunk line of a first optical cable line through an optical outlet port of the first wavelength division multiplexer, is connected with an optical inlet port of a third wavelength division multiplexer corresponding to a slave equipment through a first optical distribution frame at the slave equipment end, is connected with a multiplexing port of a fourth wavelength division multiplexer through a demultiplexing port of the third wavelength division multiplexer, an optical outlet port of the fourth wavelength division multiplexer is connected with the trunk line of the first optical cable line through the first optical distribution frame of the slave equipment, and is connected with an optical inlet port of the second wavelength division multiplexer corresponding to the detection unit through a second optical distribution frame at the main equipment end, the optical fiber is connected to the attenuator through a demultiplexing port of the second wavelength division multiplexer, so that the on-line detection of the light-emitting optical path and the light-receiving optical path in the corresponding optical cable line under the communication condition is realized;
the control processor is sequentially connected to the first wavelength division multiplexers in the detection units of the main equipment in a circulating mode through the control optical switches, so that the light emitting optical path and the light receiving optical path of each optical cable line are sequentially detected, and the detection results are uploaded to the server through the control processor.
5. The detection method according to claim 4, characterized in that: the method also comprises the communication of the light-emitting light path and the communication of the light-receiving light path; the communication process of the light-emitting light path is as follows:
a light-emitting fiber core of an optical cable line i is connected to an optical cable line i through an optical outlet port of a first wavelength division multiplexer of a detection unit i in the main device, is connected to an optical cable line i through an optical outlet port of the first wavelength division multiplexer, is connected to an optical inlet port of a third wavelength division multiplexer in the slave device i through the optical cable line i, and is connected to a light-emitting fiber core receiving end through an optical outlet port of the third wavelength division multiplexer, so that optical communication of a light-emitting optical path of the optical cable line i is realized;
the transmitting end of the receiving optical fiber core of the optical cable line i is connected to the light inlet port of the fourth wavelength division multiplexer in the slave device i, the light outlet port of the fourth wavelength division multiplexer is connected to the optical cable line i, the light inlet port of the second wavelength division multiplexer of the detection unit i in the master device is connected to the light inlet port of the receiving optical fiber core through the optical cable line i, and the light outlet port of the second wavelength division multiplexer is connected to the receiving end of the receiving optical fiber core, so that optical communication of the receiving optical path of the optical cable line i is achieved.
6. The detection method according to claim 4, characterized in that: the optical switch is a 1 × 16 optical switch, the first wavelength division multiplexer and the fourth wavelength division multiplexer are wavelength division multiplexer modules, and the second wavelength division multiplexer and the third wavelength division multiplexer are demultiplexer modules.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221695A (en) * | 2021-12-14 | 2022-03-22 | 东北电力大学 | Electric power spanning optical cable line full-coverage detection system and method |
| CN116094592A (en) * | 2023-04-06 | 2023-05-09 | 广东电网有限责任公司佛山供电局 | Automatic measurement method and device for parameters of electric power communication optical cable |
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2021
- 2021-08-02 CN CN202110879911.6A patent/CN113452435A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221695A (en) * | 2021-12-14 | 2022-03-22 | 东北电力大学 | Electric power spanning optical cable line full-coverage detection system and method |
| CN116094592A (en) * | 2023-04-06 | 2023-05-09 | 广东电网有限责任公司佛山供电局 | Automatic measurement method and device for parameters of electric power communication optical cable |
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