CN110609214A - Non-blind area on-line monitoring and fault automatic detection system for optical cable network of electric power system - Google Patents
Non-blind area on-line monitoring and fault automatic detection system for optical cable network of electric power system Download PDFInfo
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Abstract
A dead zone-free on-line monitoring and fault automatic detection system for an optical cable network of an electric power system relates to the field of optical fiber communication of the electric power system and solves the problems that the existing standby fiber core monitoring mode of the optical cable line based on a plate-clamped OTDR wastes optical fiber resources, increases the cost of monitoring equipment, can only cover a trunk section of the optical cable line, and has monitoring blind spots of an incoming and outgoing optical cable and an incoming and outgoing optical cable at a transmitting end and a receiving end, and the like; the invention avoids the low automation degree of the traditional optical power monitoring and manual fault detection, shortens the fault line detection time, ensures the normal operation of the power optical cable network and meets the requirements of various monitoring in the field.
Description
Technical Field
The invention relates to the field of optical fiber communication of an electric power system, in particular to a non-blind-area on-line monitoring and fault automatic detection system for an optical cable network of the electric power system.
Background
Optical fiber communication is widely applied to an electric power system, an electric power optical communication network is built by depending on a power grid and used for transmitting important data such as power scheduling, protection and control, the network topology structure of an electric power optical cable network is complex, the laying environment is complex, the geographic area is huge, the electric power optical cable network is easily influenced by electric corrosion, water seepage, freezing and other abnormalities caused by extreme weather are easy to occur, and the operation, maintenance and repair of the optical fiber communication network of the electric power system are difficult due to abrasion, stretching, damage, fracture and other faults caused by factors such as electric power operation and maintenance, strong wind, vehicles, municipal construction and the like. Once a power cable network line (especially a backbone network line) has a fault, time and labor are consumed to remove the fault source, the first-aid repair time is high in cost, and communication interruption not only affects the safe operation of a power system, but also causes economic loss to power enterprises. With the construction of the smart power grid, higher requirements are put forward on the reliable and safe operation of the optical fiber communication network of the power system.
Therefore, the monitoring of the optical cable network of the power system needs to be carried out on the optical cable network optical cable lines and the incoming and outgoing optical cable sections of the office building and the substation communication machine room of the office station, so that the monitoring efficiency of the optical cable network is improved, the monitoring blind spots of the incoming and outgoing optical cables are avoided, the fault duration of the optical cable lines is shortened, and the intelligent degree of the optical cable line monitoring and fault detection is improved. The current network management system for optical fiber communication of the power system provides optical power monitoring at a receiving end of a working optical fiber station, when optical attenuation occurs in a line, the network management system gives an alarm, and a worker informs operation and maintenance personnel to perform on-site troubleshooting. The existing optical cable line working fiber core on-line monitoring mode based on optical power can only provide a line light receiving monitoring point fault alarm, and can not identify fault points as a line optical cable, an incoming and outgoing optical cable and an incoming and outgoing optical cable; the optical cable line standby fiber core monitoring mode based on an Optical Time Domain Reflectometer (OTDR) can only cover the trunk section of the optical cable line, and has optical cable monitoring blind spots of incoming and outgoing and incoming and outgoing stations at the transmitting end and the receiving end. Therefore, the existing monitoring technology is difficult to meet the requirements of the power system optical cable network on blind-spot-free and automatic monitoring.
Disclosure of Invention
The invention provides a method for on-line monitoring and automatic fault detection without blind spots of an optical cable network of an electric power system, aiming at solving the problems that the standby fiber core monitoring mode of the optical cable network based on a plate-clamped OTDR wastes optical fiber resources, increases the cost of monitoring equipment, only covers the trunk section of the optical cable network, has monitoring blind areas of an in-out optical cable and an in-out optical cable at a transmitting end and a receiving end, and the working fiber core on-line monitoring mode of the optical cable network based on optical power can only provide fault alarm at the monitoring point of the light receiving end of the optical cable network, needs manual fault detection, has high fault troubleshooting cost and low automation degree, and cannot identify whether faults occur in the optical cable of the line or in-out optical cables at the tail end, so that the time duration of optical fiber.
A power system optical cable network non-blind area on-line monitoring and fault automatic detection system comprises p groups of monitoring groups, wherein each p group of monitoring groups consists of p monitoring units of local side monitoring equipment of an optical cable network local station and station side monitoring equipment of p transformer substations, on-line monitoring and fault automatic detection are carried out on p groups of power system optical cable network optical cable optical paths, and each group of optical cable optical path consists of a light receiving path and a light emitting path and is in optical fiber communication between the local station and one transformer substation;
the p monitoring units share a central control processor, an optical monitoring module, a data acquisition module, an optical alarm module, an optical detection module, a detection mode switching module, a fiber coil, a first optical switch and a second optical switch; the central control processor is respectively connected with the optical monitoring module, the optical detection module, the detection mode switching module, the data acquisition module and the optical alarm module through electrical interfaces;
each monitoring unit comprises a first optical splitter, a first wavelength division multiplexer, a first demultiplexer, a first coiled fiber and a first end joint box;
the station end monitoring equipment of each transformer substation comprises a control processor, a first optical monitoring module, a first optical warning module, a first data acquisition module, a second optical splitter, a second wavelength division multiplexer, a second demultiplexer, an optical switch, a second optical fiber and a second end joint box;
the central control processor is connected to a data transmission network of the power system through an RJ45 network port and is connected with a control processor of station end monitoring equipment of a transformer substation, so that the station end equipment can be remotely controlled;
the central control processor controls an optical interface of the first optical switch to be connected to a first optical splitter of the monitoring unit through controlling the detection mode switching module, and the optical monitoring module realizes on-line monitoring of optical power of the first optical transmission receiving equipment end under the normal optical communication condition of the first receiving optical path through the first optical switch;
the central control processor controls the first optical switch by controlling the detection mode switching module, and periodically and sequentially connects the first optical switch to the first optical splitters in each monitoring unit in a circulating manner, so that the optical power of each light receiving path is sequentially monitored;
the central control processor is connected to the second optical splitter through an optical interface of the first optical monitoring module through the data transmission network control processor, so that the optical power on-line monitoring of the first optical transmission receiving equipment end under the normal optical communication condition of the first light emitting path is realized;
the data acquisition module is connected with the optical monitoring module through an electrical interface, is connected with the first optical switch through an optical interface, is periodically and sequentially connected to the first optical splitter of each monitoring unit in a circulating manner, realizes sequential acquisition of optical power monitoring data of each monitored light receiving path, and uploads the optical power monitoring data to the application server and the data server through the central control processor;
the optical alarm module is connected with the data acquisition module through an electrical interface to realize the sequential alarm of the indicator lights of the faults in the plurality of monitored light receiving paths;
the first data acquisition module is connected to the second optical splitter through the electrical interface and the first optical monitoring module, acquires optical power monitoring data of the first light emitting path, and uploads the optical power monitoring data to the application server and the data server through the control processor;
the first optical alarm module is connected with the first data acquisition module through an electrical interface, realizes the alarm of the fault indicator lamp of the monitored first light-emitting path and uploads the alarm to the application server and the data server through the central control processor;
the central control processor controls the second optical switch through the detection mode switching module, is connected to the first wavelength division multiplexer, and is sequentially connected to the second demultiplexer, the second optical fiber disc and the optical switch through the first light-emitting path outgoing optical cable, the first light-emitting path line optical cable and the first light-emitting path incoming optical cable;
the central control processor controls the second optical switch through the detection mode switching module, is periodically and sequentially connected to the first wavelength division multiplexer of each monitoring unit, and respectively realizes a blind-area-free fault detection mode of a first light-emitting path in each group of optical cable light paths;
the central control processor controls the second optical switch through the detection mode switching module, is connected to the first wavelength division multiplexer, is connected to the second demultiplexer, the second disc fiber and the optical switch through the first light emitting path outgoing optical cable, the first light emitting path line optical cable and the first light emitting path incoming optical cable, and is connected to the second demultiplexer, the second disc fiber and the optical switch through the central control processor and the remote control processor, so that the optical switch is connected to the second wavelength division multiplexer through the first light receiving path outgoing optical cable, the first light receiving path line optical cable and the first light receiving path incoming optical cable, and is connected to the first demultiplexer, the first disc fiber and the first end connector box through the first light receiving path outgoing optical cable, the first light receiving path line optical cable and the first light receiving path incoming optical cable, and the first light receiving path blind area-;
the central control processor controls the second optical switch through the detection mode switching module, is periodically connected to the first wavelength division multiplexer of each monitoring unit in sequence, remotely controls the control processor of each station end monitoring device in sequence, correspondingly realizes that each optical switch is connected with the corresponding second wavelength division multiplexer, and respectively realizes the blind-area-free fault detection mode of the receiving optical path in the corresponding optical cable optical path.
The invention has the beneficial effects that: according to the electric power system optical cable network non-blind area on-line monitoring and fault automatic detection system, multiple pairs of optical cable paths between an electric power system station and a transformer substation are monitored on line, faults of optical cable lines are automatically detected without blind areas, faults of different cable sections of line optical cables of the optical cable lines, in-out optical cables, in-out station optical cables and the like are identified, the problem that monitoring blind points of the in-out optical cables and the in-out optical cables exist in the existing detection mode is solved, fault points are accurately located, the problem that the automation degree of traditional optical power monitoring and manual fault detection is low is avoided, fault line detection time is shortened, normal operation of the electric power optical cable network is guaranteed, and the requirements of various kinds of monitoring in.
Drawings
Fig. 1 is a schematic structural diagram of a system for blind-area-free online monitoring and automatic fault detection of an optical cable network of an electric power system according to the present invention.
Detailed Description
In a first specific embodiment, this embodiment is described with reference to fig. 1, where the method includes p (p is 16) substation-side devices and 1 local-side monitoring device in a substation, which are divided into p monitoring groups, and performs online monitoring on p optical paths of optical cables in an electric power optical cable network, where the local-side monitoring devices are installed in a central local station, the p substation-side monitoring devices respectively correspond to p different substations, each local-side monitoring device includes p monitoring units, each monitoring group i (a is not less than i and not more than p) includes a monitoring unit i and a substation-side device i, and a pair of optical cable optical paths between a monitoring local station and a substation i includes a transmitting path and a receiving path;
each monitoring unit has the same structure and comprises 1 optical splitter, 2 WDM, 1 optical fiber disc and 1 end connector box, and the monitoring unit a comprises an optical splitter a, a WDM a1, a WDM A1, an optical fiber disc a and an end connector box a; each group of monitoring units share a central control processor, an optical monitoring module, a data acquisition module, an optical alarm module, an optical detection module, a detection mode switching module, a first optical switch, a second optical switch and a fiber coil;
each substation end monitoring device comprises 1 control processor, 1 optical monitoring module, 1 data acquisition module, 1 optical alarm module, 1 optical switch, 1 optical splitter and 2 WDM, each substation end monitoring device is the same, the substation end monitoring device a comprises a control processor a, a data acquisition module a, an optical monitoring module a, an optical alarm module a, an optical switch A, a fiber coil aA, a terminal joint box A, an optical splitter A, a WDM A2 and a WDM a2, a receiving optical path incoming optical cable a, a receiving optical path optical cable a and a receiving optical path outgoing optical cable a are used for connecting an optical distribution frame (ODFa 1) and a substation end device side (ODFa 2), and a transmitting optical path outgoing optical cable A, a transmitting optical path optical cable A and a transmitting optical path incoming optical cable A are used for connecting the optical distribution frame (ODFA 1) and the substation end device side (ODFA 2); the optical splitter a and the WDM a are connected in series to ODFs at two ends of local-end equipment by using a receiving optical path local inner fiber core a, and the WDM A is connected to the ODFs at two ends of the local-end equipment by using a transmitting optical path local inner fiber core A; each monitoring group has the same structure; the WDM a2 is connected to the two ends ODF of the station end equipment by using the receiving optical path station inner fiber core a, and the optical splitter A and the WDM A2 are connected in series to the two ends ODF of the station end equipment by using the emitting optical path station inner fiber core A; each monitoring device has the same structure; wherein:
the central control processor is respectively connected with the first optical switch, the second optical switch, the data acquisition module, the optical monitoring module, the optical detection module, the optical alarm module and the detection mode switching module through electrical interfaces, is accessed into a data transmission network through an RJ45 network port and is connected with a control processor a of station end monitoring equipment of a transformer substation to realize control of the optical switch A; the remote control system is connected with an application server and a data server to realize remote control;
the optical monitoring module is connected with the optical path a of the first optical switch through an optical interface to the optical splitter a, so that the optical power monitoring of the optical receiving path a is realized; the data acquisition module is connected with the optical monitoring module through an electrical interface to realize the sequential acquisition of the optical power monitoring data of p optical cable light paths between the office station and p transformer substations;
the data acquisition module a is connected with the optical monitoring module a through an electrical interface and acquires optical monitoring data of the light-emitting path a;
the optical alarm module is connected with the data acquisition module through an electrical interface to realize the sequential alarm of the faults from the monitored light receiving path a to the light receiving path p;
the optical alarm module a is connected with the data acquisition module a through an electrical interface to realize the fault alarm of the monitored light emitting path a;
the central control processor is connected with the optical detection module and the second optical switch through an electrical interface, is respectively connected with the corresponding optical switches through the control processors (a to p) in a remote mode, is polled and switched to each alarm light-emitting path, and injects detection light to the light-emitting path of the fault alarm through the control optical detection module to realize the sequential fault detection of the alarm light-emitting path and the light-receiving path;
the data acquisition module is connected with the optical detection module through an electrical interface, and controls the second optical switch to poll the alarm light-emitting path and the receiving path from the WMD A to the WDM P through the detection mode switching module, so as to sequentially acquire fault detection data of the alarm light-emitting path and the receiving path;
the system for on-line monitoring and automatic fault detection without blind areas of the optical cable network of the electric power system can realize simultaneous monitoring of optical cable optical paths between a central office station and 16 substations in the optical cable network of the electric power system, and comprises simultaneous monitoring of a light emitting path (an outgoing optical cable, a line optical cable and an incoming optical cable) and a light receiving path (an incoming optical cable, a line optical cable and an outgoing optical cable) between the central office station and each station, and fault warning and fault detection of the light emitting path and the light receiving path;
in this embodiment, the optical splitters a and a are 1 × 2 optical fiber splitters, the first optical switch is a1 × 16 optical switch, the second optical switch is a1 × 16 optical switch, the optical switch a is a1 × 2 optical switch, the optical monitoring module is an optical power meter module, the optical monitoring module is an OTDR module, the WDM a1 and WDM a2 are wavelength division multiplexer modules, the WDM a1 and WDMa1WDM a2 are demultiplexer modules, and the optical fiber disks, the optical fiber disks a and the optical fiber disks aA are optical fiber segments with a length of 1 km;
in this embodiment, central control treater adopts the FPGA development board that the model is EP3C55, detection mode switch module and control treater a adopt the model to be the singlechip of STM8S103 series, data acquisition module adopt the model to be LTC2380-24 chip, data acquisition module a adopt the model to be LTC2380-16 chip, light alarm module and light alarm module a adopt MDZ12-1/2 series chip.
In fig. 1, thick black connecting lines represent optical cables, black connecting lines represent optical fiber cores and optical paths, thin connecting lines represent data connecting network lines, and thin connecting lines represent data connecting lines; the local side monitoring device and the station side monitoring device of the system are logically divided into p groups of monitoring groups, each monitoring group comprises 1 local side monitoring device monitoring unit and 1 station side monitoring device, the monitoring unit a and the monitoring unit b … share a central control processor, a first optical switch, a second optical switch, a fiber coil, a data acquisition module, an optical monitoring module, an optical detection module, a detection mode switching module and an optical alarm module, the p monitoring groups realize the p-group online monitoring of optical paths of optical cables between a local station and p substations, wherein, monitoring group a realizes 1 in between the office station and the transformer substation a to the online monitoring of optical cable light path, and 1 is to optical cable light path including 1 way light emitting path and 1 way light receiving path, and 1 way light receiving path includes route optical cable a, circuit optical cable a and the optical cable a of leaving a station, and 1 way light receiving path includes optical cable A of leaving a station, circuit optical cable A and the optical cable A of leaving a station.
The application server controls the first optical switch to select the light receiving path a to be connected to the optical splitter a through the central control processor, and at the moment, the light receiving path a in the monitoring group a is in a light receiving path on-line monitoring mode; the application server controls the optical monitoring module to be connected to the optical splitter A through the control processor a, and at the moment, the light-emitting path A in the monitoring group a is in a light-emitting path on-line monitoring mode;
according to the on-line monitoring requirement of an optical cable network of an electric power system, the method simultaneously monitors p pairs of optical cable paths between a central control processor and p substations, the central control processor controls a first optical switch to sequentially select a light receiving path a to a light receiving path p, and the on-line monitoring of the light receiving path a to the light receiving path p is realized through an optical monitoring module; the optical monitoring modules a to p sequentially realize the corresponding on-line monitoring of the light emitting paths a to p in the optical cable path;
the online monitoring principle of the light receiving path a is as follows: in fig. 1, an in-station core a containing service data from an optical transmission transmitting device T-a is connected to WDM a2 in a station side device, and is accessed to an office side device through an outbound optical cable a, a line optical cable a and an inbound optical cable a, and is connected to WDM a 1; the optical path is divided into a communication optical transmission optical path and an optical monitoring optical path by an optical splitter a; the central control processor controls the optical monitoring module to monitor the optical power of the side light of the fiber core a in the receiving light path a through the first optical switch, and controls the data acquisition module to acquire optical power data; the data acquisition module uploads the acquired optical power data to a data server through a central control processor; the optical alarm module realizes the fault alarm of the light receiving path a; the optical alarm module uploads the optical alarm information to the application server and the data server through the central control processor;
the principle of on-line monitoring of the light emitting path A is as follows: in fig. 1, an optical transmission transmitting device T-a includes an intra-office fiber core a containing service data, which is connected to a WDM a1 in an office end device, and is connected to an optical splitter a through an outgoing optical cable a, a line optical cable a and an incoming optical cable a, and a WDM a2 in an access station end device a; the optical path is divided into A communication optical transmission optical path and an optical monitoring optical path through the optical splitter A, and the communication optical transmission optical path is connected to an optical transmission receiving device R-A; the control processor a controls the optical monitoring module a to monitor the optical power of the side light of the fiber core a in the station of the light emitting path A, and controls the data acquisition module a to acquire optical power data; the data acquisition module a uploads the acquired optical power data to a data server through a control processor a; the optical alarm module a realizes fault alarm of the light emitting path A; the optical alarm module a uploads the optical alarm information to an application server and a data server through a control processor a;
when the light emitting path A breaks down, the optical alarm module a alarms, the light emitting path detection mode is started, the detection mode switching module controls the second optical switch to the light receiving path A, the control processor a controls the optical switch A to switch to the tail end connector box A, and the optical detection module realizes the detection of the light emitting path A through the optical fiber and the second optical switch; the p-path light-emitting paths have multi-path light-emitting path faults, the detection mode switching module is switched to the fault light paths in sequence by controlling the second optical switch according to the alarm sequence of the fault light-emitting paths, and the detection of each fault light-emitting path is realized through the optical detection module;
when the receiving optical path a has a fault, the optical alarm module gives an alarm and starts a receiving optical path detection mode, the detection mode switching module controls the second optical switch to be switched to the light emitting path A, the control processor a controls the optical switch A to be switched to the WDM a2, and the optical detection module realizes the detection of the receiving optical path a through the optical fiber and the second optical switch; the detection mode switching module controls the second optical switch to the fault optical path in a polling mode according to the alarm sequence of the fault optical path when multiple optical path faults occur in the p groups of light-emitting paths, and the current fault light-receiving path detection is realized through the optical detection module;
the light-emitting path detection mode is a fault detection mode of an incoming optical cable, a line optical cable and an outgoing optical cable of a light-emitting path, and the working principle of the detection mode is as follows: in fig. 1, the application server controls the detection mode switching module to implement the second optical switch selective light emitting path a through the central control processor, the control processor a controls the optical switch a selective light emitting path a21 to be connected to the end junction box a, the control light detecting module injects detection light to the multiplexing port of WDM a1 through the optical fiber and the second optical switch, the detection light is demultiplexed by the demultiplexing port 3 of WDM a2 and demultiplexed to the end junction box through the optical fiber aA and the a21 optical path of the optical switch a, and at this time, the light emitting path a in the monitoring group a is in the light emitting path fault detection mode, thereby implementing fault detection of the outgoing optical cable a, the line optical cable a and the incoming optical cable a of the light emitting path a;
the optical receiving path detection mode is an incoming optical cable, a line optical cable and an outgoing optical cable fault detection mode of the optical receiving path, and the working principle of the detection mode is as follows: in fig. 1, the application server controls the detection mode switching module to realize the second optical switch selective light emitting path a through the central control processor, remotely controls the optical switch a selective light emitting path a22 through the control processor a to be connected to the WDM a2, controls the optical detection module to inject the detection light to the multiplexing port 3 of the WDM a1 through the optical fiber and the second optical switch in sequence, demultiplexes the detection light from the demultiplexing port 3 of the WDM a2, the optical path A22 is injected into the multiplexing port 3 of WDMa2 through the optical disk aA and the optical switch A, is multiplexed to the optical receiving path, is injected into the outbound optical cable a, the line optical cable a and the incoming optical cable a through the port 2, and then the optical fiber is injected into the WMD a1, and is demultiplexed to the optical fiber disk a and the terminal joint box a from the demultiplexing port 3 of the WMD a1, at this time, the light receiving path a in the monitoring group a is in a light receiving path fault detection mode, and fault detection of the outbound optical cable a, the line optical cable a and the incoming optical cable a of the light emitting path a is realized.
Claims (4)
1. A power system optical cable network non-blind area on-line monitoring and fault automatic detection system comprises p groups of monitoring groups, wherein each p group of monitoring groups consists of p monitoring units of local side monitoring equipment of an optical cable network local station and station side monitoring equipment of p transformer substations, on-line monitoring and fault automatic detection are carried out on p groups of power system optical cable network optical cable optical paths, and each group of optical cable optical path consists of a light receiving path and a light emitting path and is in optical fiber communication between the local station and one transformer substation;
the p monitoring units share a central control processor, an optical monitoring module, a data acquisition module, an optical alarm module, an optical detection module, a detection mode switching module, a fiber coil, a first optical switch and a second optical switch; the central control processor is respectively connected with the optical monitoring module, the optical detection module, the detection mode switching module, the data acquisition module and the optical alarm module through electrical interfaces;
each monitoring unit comprises a first optical splitter, a first wavelength division multiplexer, a first demultiplexer, a first coiled fiber and a first end joint box;
the station end monitoring equipment of each transformer substation comprises a control processor, a first optical monitoring module, a first optical warning module, a first data acquisition module, a second optical splitter, a second wavelength division multiplexer, a second demultiplexer, an optical switch, a second optical fiber and a second end joint box;
the central control processor is connected to a data transmission network of the power system through an RJ45 network port and is connected with a control processor of station end monitoring equipment of a transformer substation, so that the station end equipment can be remotely controlled;
the central control processor controls an optical interface of the first optical switch to be connected to a first optical splitter of the monitoring unit through controlling the detection mode switching module, and the optical monitoring module realizes on-line monitoring of optical power of the first optical transmission receiving equipment end under the normal optical communication condition of the first receiving optical path through the first optical switch;
the central control processor controls the first optical switch by controlling the detection mode switching module, and periodically and sequentially connects the first optical switch to the first optical splitters in each monitoring unit in a circulating manner, so that the optical power of each light receiving path is sequentially monitored;
the central control processor is connected to the second optical splitter through an optical interface of the first optical monitoring module through the data transmission network control processor, so that the optical power on-line monitoring of the first optical transmission receiving equipment end under the normal optical communication condition of the first light emitting path is realized;
the data acquisition module is connected with the optical monitoring module through an electrical interface, is connected with the first optical switch through an optical interface, is periodically and sequentially connected to the first optical splitter of each monitoring unit in a circulating manner, realizes sequential acquisition of optical power monitoring data of each monitored light receiving path, and uploads the optical power monitoring data to the application server and the data server through the central control processor;
the optical alarm module is connected with the data acquisition module through an electrical interface to realize the sequential alarm of the indicator lights of the faults in the plurality of monitored light receiving paths;
the first data acquisition module is connected to the second optical splitter through the electrical interface and the first optical monitoring module, acquires optical power monitoring data of the first light emitting path, and uploads the optical power monitoring data to the application server and the data server through the control processor;
the first optical alarm module is connected with the first data acquisition module through an electrical interface, realizes the alarm of the fault indicator lamp of the monitored first light-emitting path and uploads the alarm to the application server and the data server through the central control processor;
the central control processor controls the second optical switch through the detection mode switching module, is connected to the first wavelength division multiplexer, and is sequentially connected to the second demultiplexer, the second optical fiber disc and the optical switch through the first light-emitting path outgoing optical cable, the first light-emitting path line optical cable and the first light-emitting path incoming optical cable;
the central control processor controls the second optical switch through the detection mode switching module, is periodically and sequentially connected to the first wavelength division multiplexer of each monitoring unit, and respectively realizes a blind-area-free fault detection mode of a first light-emitting path in each group of optical cable light paths;
the central control processor controls the second optical switch through the detection mode switching module, is connected to the first wavelength division multiplexer, is connected to the second demultiplexer, the second disc fiber and the optical switch through the first light emitting path outgoing optical cable, the first light emitting path line optical cable and the first light emitting path incoming optical cable, and is connected to the second demultiplexer, the second disc fiber and the optical switch through the central control processor and the remote control processor, so that the optical switch is connected to the second wavelength division multiplexer through the first light receiving path outgoing optical cable, the first light receiving path line optical cable and the first light receiving path incoming optical cable, and is connected to the first demultiplexer, the first disc fiber and the first end connector box through the first light receiving path outgoing optical cable, the first light receiving path line optical cable and the first light receiving path incoming optical cable, and the first light receiving path blind area-;
the central control processor controls the second optical switch through the detection mode switching module, is periodically connected to the first wavelength division multiplexer of each monitoring unit in sequence, remotely controls the control processor of each station end monitoring device in sequence, correspondingly realizes that each optical switch is connected with the corresponding second wavelength division multiplexer, and respectively realizes the blind-area-free fault detection mode of the receiving optical path in the corresponding optical cable optical path.
2. The system of claim 1, wherein the system comprises a blind area-free on-line monitoring and fault automatic detection system for optical cable networks of electric power systems, and the system comprises:
the central control processor controls the second optical switch through the detection mode switching module and controls the optical switch through the control processor, so that the free switching between the light receiving path non-blind area fault detection mode and the light emitting path non-blind area fault detection mode is realized; and each group of light-emitting path and light-receiving path independently selects a detection mode.
3. The system of claim 1, wherein the system comprises a blind area-free on-line monitoring and fault automatic detection system for optical cable networks of electric power systems, and the system comprises:
the data acquisition module is connected with the optical detection module through an electrical interface, realizes the sequential acquisition of detection data of failed light emitting paths and light receiving paths in the light receiving paths and the light emitting paths, and uploads the detection data to the application server and the data server through the central control processor.
4. The system of claim 1, wherein the system comprises a blind area-free on-line monitoring and fault automatic detection system for optical cable networks of electric power systems, and the system comprises:
each light-emitting path comprises a light-emitting path outgoing optical cable, a light-emitting path line optical cable and a light-emitting path incoming optical cable, and each light-receiving path comprises a light-receiving path incoming optical cable, a light-receiving path line optical cable and a light-receiving path outgoing optical cable;
connecting the optical fiber cable at the office end side ODF and the optical fiber cable at the station end side ODF by using an optical fiber cable at the receiving end, an optical fiber cable at the receiving end and an optical fiber cable at the receiving end, and connecting the optical fiber cable at the transmitting end side ODF and the optical fiber cable at the station end by using an optical fiber cable at the transmitting end, an optical fiber cable at the transmitting end and an optical fiber cable at the transmitting end;
connecting the first optical splitter and the first demultiplexer to ODFs (optical distribution coefficients) at two ends of local-side equipment in series by using a receiving optical path local inner fiber core, and connecting the first wavelength division multiplexer to ODFs at two ends of the local-side equipment by using a transmitting optical path local inner fiber core; and connecting the second wavelength division multiplexer to the ODFs at the two ends of the station-end equipment by using the fiber core in the light receiving circuit station, and connecting the second optical splitter and the second demultiplexer to the ODFs at the two ends of the station-end equipment in series by using the fiber core in the light emitting circuit station.
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