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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Abstract
双功能电力光缆网线路检测系统及方法，涉及电力系统光纤通信领域，解决现有基于光时域反射仪(OTDR)的光缆线路独占纤芯检测模式，浪费线路的光纤纤芯资源，增加检测成本；基于光功率的光缆线路工作纤芯在线检测模式，只能提供光缆线路收光光路故障告警，且需要人工检测故障，无法识别故障发生于线路光缆位置，排查故障历时长导致光纤通信长时间中断延长等问题，包括主设备和N个从设备，主设备用于对主变电站与N个变电站之间的N条光缆线路进行在线检测；N个检测单元共用控制处理器、光开关和OTDR；控制处理器通过电接口分别与光开关和OTDR连接。本新型提高检测系统运行可靠性，保障电力光缆网稳定运行，满足了检测需求。
The dual-function power optical cable network line detection system and method relate to the field of optical fiber communication in power systems, and solve the problem of the existing optical time domain reflectometry (OTDR)-based exclusive fiber core detection mode for optical cable lines, waste of optical fiber core resources of the line, and increased detection costs. ;On-line detection mode of the working fiber core of optical cable line based on optical power, can only provide alarm of optical cable receiving optical path failure, and requires manual detection of the fault, unable to identify the fault occurred in the line optical cable position, and the long-term troubleshooting leads to long-term interruption of optical fiber communication Problems such as extension, including the master device and N slave devices, the master device is used for online detection of N optical cable lines between the main substation and N substations; N detection units share the control processor, optical switch and OTDR; control The processor is respectively connected with the optical switch and the OTDR through electrical interfaces. The new type improves the operation reliability of the detection system, ensures the stable operation of the power optical cable network, and meets the detection requirements.
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)
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| 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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Effective date of registration: 20220318 Address after: 010010 5th floor, dispatching and communication building of State Grid East Inner Mongolia Power Co., Ltd., No. 11, Ordos East Street, Hohhot, Inner Mongolia Autonomous Region Applicant after: STATE GRID INNER MONGOLIA EASTERN ELECTRIC POWER CO.,LTD. INFORMATION AND COMMUNICATION BRANCH Applicant after: NORTHEAST DIANLI University Applicant after: STATE GRID CORPORATION OF CHINA Address before: 010010 5th floor, dispatching and communication building of State Grid East Inner Mongolia Power Co., Ltd., No. 11, Ordos East Street, Saihan District, Hohhot City, Inner Mongolia Autonomous Region Applicant before: STATE GRID INNER MONGOLIA EASTERN ELECTRIC POWER CO.,LTD. INFORMATION AND COMMUNICATION BRANCH Applicant before: NORTHEAST DIANLI University |
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