CN110609214B - 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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- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
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Abstract
The utility model provides a no blind area on-line monitoring of electric power system optical cable network and trouble automated inspection system, relate to the optical fiber communication field of electric power system, solve the current optical cable line reserve fiber core monitoring mode based on board card formula OTDR, waste the optical fiber resource, increase monitoring facilities cost, and can only cover the optical cable line trunk section, there are business turn over optical cable and business turn over station optical cable monitoring blind spot scheduling problem of originating and receiving end, including p group monitoring group, p group monitoring group comprises the station end monitoring equipment of p monitoring units and p transformer substation of the local side monitoring equipment of an optical cable network office station, carry out on-line monitoring and trouble automated inspection to p group electric power system optical cable network optical cable light path, two light paths of every group optical cable route light receiving path and light emitting path constitute the optical fiber communication between office station and a transformer substation; the invention avoids the low degree of automation 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 power systems, in particular to a non-blind area on-line monitoring and fault automatic detection system for an optical cable network of a power system.
Background
The optical fiber communication is widely applied to a power system, and an electric power optical communication network is built by depending on a power grid and is used for transmitting important data such as power dispatching, protection and control, the network topology structure of the electric power optical cable network is complex, the laying environment is complex, the geographical area is huge, the electric power optical cable network is easily affected by electric corrosion, the anomalies such as water seepage and freezing caused by extreme weather are easy to occur, and the faults such as abrasion, stretching, breakage and fracture are caused by factors such as power operation and maintenance, strong wind, vehicles and municipal construction, so that the operation and maintenance of the optical fiber communication network of the power system are difficult. Once the power optical cable network line (especially the backbone network line) fails, the time and effort are consumed for removing the failure source, the rush repair time cost is high, the communication interruption not only affects the safe operation of the power system, but also causes economic loss for power enterprises. Along with the construction of the intelligent 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 electric power system needs to be carried out on the optical cable network and the optical cable lines of the optical cable network and the incoming and outgoing optical cable sections of the office building of the office station and the communication machine room of the transformer substation, so that the monitoring efficiency of the optical cable network is improved, the blind point of the monitoring of the incoming and outgoing optical cable is avoided, the duration of the faults of the optical cable lines is shortened, and the intelligent degree of the monitoring and fault detection of the optical cable lines is improved. The network management system for optical fiber communication of the current power system provides optical power monitoring for the receiving end of the working optical fiber station, light attenuation occurs to a line, the network management system gives an alarm, and staff informs operation and maintenance staff to conduct field fault investigation. The existing optical power-based optical cable line working fiber core on-line monitoring mode can only provide line light receiving monitoring point fault alarm and can not identify the fault point 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 main section of the optical cable line, and has incoming and outgoing optical cable monitoring blind spots of an originating end and a receiving end. Therefore, the prior monitoring technology is difficult to meet the requirement of no blind spot and automatic monitoring of the optical cable network of the power system.
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, which aims to solve the problems that the existing standby fiber core monitoring mode of an optical cable line based on an optical card type OTDR wastes optical fiber resources, increases the cost of monitoring equipment, only covers a main section of the optical cable line, has an in-out optical cable and an in-out optical cable monitoring blind area of an originating end and a receiving end, only provides an on-line monitoring mode of an optical cable working fiber core based on optical power, only provides fault warning of an optical receiving end monitoring point of the optical cable line, needs manual fault detection, has high fault detection cost and low automation degree, and cannot identify whether the fault occurs in the in-out optical cable and the in-out optical cable of the tail end of the line optical cable, leads to the interruption duration of optical fiber communication and the like.
The system comprises p groups of monitoring groups, wherein the p groups of monitoring groups consist 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, the optical cable paths of the optical cable network of the p groups of electric power system are monitored on line and automatically detected in fault, and each group of optical cable optical paths form optical fiber communication between the local station and the transformer substation by two optical paths of an optical receiving path and an optical emitting path;
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 coiling, 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 optical fiber and a first end connector box;
the station end monitoring equipment of each transformer substation comprises a control processor, a first optical monitoring module, a first optical alarm 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 terminal connector box;
the central control processor is connected with 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 the transformer substation to realize remote control of the station end equipment;
the central control processor controls the optical interface of the first optical switch to be connected to the first optical splitter of the monitoring unit through controlling the detection mode switching module, and the optical monitoring module realizes on-line monitoring of the optical power of the first optical transmission receiving equipment end under the condition of normal optical communication of the first receiving optical path through the first optical switch;
the central control processor controls the first optical switch through controlling the detection mode switching module, and is periodically and sequentially connected to the first optical splitters in each monitoring unit in a circulating way so as to realize the sequential monitoring of the optical power of each light receiving path;
the central control processor is connected to the second optical splitter through an optical interface of the first optical monitoring module by the data transmission network control processor, so that the optical power of the first optical transmission receiving equipment end is monitored on line under the condition of normal optical communication of the first light-emitting path;
the data acquisition module is connected with the optical monitoring module through an electric interface, is connected to the first optical switch through an optical interface, is periodically and sequentially and circularly connected to the first optical splitter of each monitoring unit, realizes the sequential acquisition of the optical power monitoring data of each monitored light receiving path, and is uploaded 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 electric interface to realize the alarm of the sequential indicator lamps of faults in the monitored multiple light receiving paths;
the first data acquisition module is connected with the first optical monitoring module through an electric interface to the second optical splitter, so that the acquisition of the optical power monitoring data of the first light-emitting path is realized, and the optical power monitoring data is uploaded 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 electric 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, is sequentially connected to the second demultiplexer, the second optical 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 realizes that the optical switch is connected to the second end joint box through the remote control processor through the central control processor, so that the first light-emitting path of the optical cable has no blind area fault detection mode;
the central control processor controls the second optical switch through the detection mode switching module, and the second optical switch is periodically and sequentially connected to the first wavelength division multiplexer of each monitoring unit to respectively realize the non-blind area fault detection mode of the 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 optical 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 the detection mode switching module realizes that the optical switch is connected to the second wavelength division multiplexer through the central control processor and the remote control processor, and is connected to the first demultiplexer, the first optical 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, so that a first light-receiving path non-blind area fault detection mode of the optical cable is realized;
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, sequentially and respectively remotely controls the control processor of each station monitoring device, correspondingly realizes the connection of each optical switch with the corresponding second wavelength division multiplexer, and respectively realizes the non-blind area fault detection mode of the light receiving path in the corresponding optical cable light path.
The invention has the beneficial effects that: the system for online monitoring and automatic fault detection of the optical cable network of the electric power system has the advantages that the system is used for online monitoring of multiple optical cable paths between the substation and the power system station, the faults of the optical cable lines are automatically detected in the non-blind areas, faults of different cable sections such as the line optical cable of the optical cable lines, the incoming optical cable, the outgoing optical cable and the like are identified, the problem of blind monitoring points of the incoming optical cable and the outgoing optical cable in the existing detection mode is solved, fault points are accurately positioned, the traditional optical power monitoring and manual fault detection are low in automation degree, the fault line detection time is shortened, the normal operation of the electric power optical cable network is guaranteed, and the requirements of multiple monitoring in the field are met.
Drawings
Fig. 1 is a schematic structural diagram of an on-line monitoring and fault automatic detection system for a power system optical cable network without blind areas.
Detailed Description
The first embodiment is described with reference to fig. 1, and the system for online monitoring and fault automatic detection of an optical cable network of an electric power system includes p (p=16) substation end devices and 1 local end monitoring device of a local station, wherein the p pairs of optical cable paths of the electric power optical cable network are divided into p monitoring groups, the local end monitoring devices are installed in a central office station, the p station end monitoring devices respectively correspond to p different substations, the local end monitoring devices comprise p monitoring units, the monitoring group i (a is less than or equal to i is less than or equal to p) comprises a monitoring unit i and a station end device i, and a pair of optical cable paths between the monitoring office station and the substation i comprises a light emitting path and a light receiving path;
each monitoring unit has the same structure and comprises 1 optical splitter, 2 WDMs, 1 optical fiber and 1 terminal connector box, and the monitoring unit a comprises an optical splitter a, a WDM A1, a WDM A1, an optical fiber a and a terminal connector box a; the 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;
each substation station-side 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, and each substation station-side monitoring device is the same, and the station-side 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 A, an end connector box A, an optical splitter A, WDM A2 and WDM A2, wherein the optical receiving path incoming optical cable a, the optical receiving path line optical cable a and the optical receiving path outgoing optical cable a are used for connecting a local-side device ODFa1 (optical distribution frame) and a station-side device ODFa2, and the optical emitting path outgoing optical cable A, the optical emitting path optical cable A and the optical emitting path incoming optical cable A are used for connecting a local-side device ODFA1 (optical distribution frame) and a station-side device ODFA2; the optical splitter a and the WDM a are connected to the ODFs at the two ends of the local side equipment in series by using the optical receiving path local core a, and the WDM A is connected to the ODFs at the two ends of the local side equipment by using the optical emitting path local core A; each monitoring group has the same structure; connecting WDM A2 to ODF at two ends of the station equipment by using a fiber core a in the receiving optical path station, and connecting an optical splitter A and WDM A2 to ODF at two ends of the station equipment in series by using a fiber core A in the emitting optical path station; 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, and is connected with a data transmission network through an RJ45 network port, and is connected with a control processor a of station-end monitoring equipment of the transformer substation to realize control of the optical switch A; the remote control is realized by connecting with an application server and a data server;
the optical monitoring module is connected with an optical path a of the first optical switch through an optical interface to the optical splitter a so as to realize the optical power monitoring of the optical receiving path a; the data acquisition module is connected with the optical monitoring module through an electric interface, so that the optical power monitoring data of p optical cable paths between the local station and p substations are sequentially acquired;
the data acquisition module a is connected with the optical monitoring module a through an electric 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 electric interface to realize the sequential alarm of 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 electric interface to realize 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 the electric interfaces, is connected with the corresponding optical switch through the control processors (a to p) remotely, polls and switches to each alarm light-emitting path, and injects detection light into the light-emitting path of the fault alarm through the control optical detection module so as to realize 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 electric interface, and the detection mode switching module is used for controlling the second optical switch to poll the alarm light-emitting path and the alarm light-receiving path in the WMD A to the WDM P, so as to sequentially acquire fault detection data of the alarm light-emitting path and the alarm light-receiving path;
the system for online monitoring and automatic fault detection of the optical cable network of the electric power system, which is disclosed by the embodiment, can realize simultaneous monitoring of optical cable paths between an 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 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 splitter a and the optical splitter 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 detecting module is an OTDR module, the WDM A1 and the WDM A2 are wavelength division multiplexer modules, the WDM A1 and the WDMa1WDM A2 are demultiplexer modules, and the optical fiber, the optical fiber a and the optical fiber aA are all fiber segments with a length of 1 km;
in this embodiment, the central control processor adopts an FPGA development board with a model number of EP3C55, the detection mode switching module and the control processor a adopt a single-chip microcomputer with a model number of STM8S103 series, the data acquisition module adopts an LTC2380-24 chip, the data acquisition module a adopts an LTC2380-16 chip, and the optical alarm module a adopt MDZ12-1/2 series chips.
In fig. 1, thick black connection lines represent optical cables, black connection lines represent optical fiber cores and optical paths, thin connection lines represent data connection network lines, and directional thin connection lines represent data connection lines; the system local side monitoring equipment and the station side monitoring equipment are logically divided into p groups of monitoring groups, each monitoring group comprises 1 local side monitoring equipment monitoring unit and 1 station side monitoring equipment, the monitoring unit a, the monitoring unit b … monitoring unit p share a central control processor, a first optical switch, a second optical switch, a fiber coiling, 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 online monitoring of a common p pair of optical paths between a local station and p substations, 1 pair of optical cable paths between the local station and the substation a are realized by the monitoring group a,1 pair of optical cable paths comprise 1-way light emitting paths and 1-way light receiving paths, and 1-way light receiving paths comprise an incoming optical cable a, a line optical cable a and an outgoing optical cable a, and 1-way light receiving paths comprise an outgoing optical cable a, a line optical cable a and an incoming optical cable a.
The application server controls the first optical switch to select a light receiving path a to be connected to the optical splitter a through the central control processor, and 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 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 paths between a local station and p substations, a central control processor controls a first optical switch to sequentially select a light receiving path a to a light receiving path p, and on-line monitoring of the light receiving paths a to p is realized through an optical monitoring module; the optical monitoring modules a to p sequentially realize the on-line monitoring of the corresponding p to the light-emitting paths a to p in the optical path of the pair of light;
the on-line 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 device T-a is connected to a WDM a2 in a station-side device, and is connected to a station-side device through an outbound optical cable a, a line optical cable a and an inbound optical cable a, and is connected to a WDM a 1; dividing the optical path into a communication light transmission optical path and an optical monitoring optical path by a beam splitter a; the central control processor controls the optical monitoring module to monitor the side optical power of the local optical core a of the optical receiving 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 the 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 luminous path A is as follows: in fig. 1, an intra-office fiber core a containing service data from an optical transmission transmitting device T-a is connected to a WDM A1 in an office 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 device a; dividing the optical path into a communication light transmission optical path and an optical monitoring optical path through the optical splitter A, and enabling the communication light transmission optical path to be connected to the light transmission receiving equipment R-A; the control processor a controls the optical monitoring module a to monitor the side optical power of the fiber core a in the station of the luminous 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 the control processor a; the optical alarm module a realizes the fault alarm of the luminous path A; the optical alarm module a uploads the optical alarm information to the application server and the data server through the control processor a;
the light emitting path A fails, the light 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 terminal connector box A, and the light detection module realizes the detection of the light emitting path A through the disc fiber and the second optical switch; the p-path luminous paths have multiple paths of luminous path faults, and according to the alarm sequence of the fault luminous paths, the detection mode switching module sequentially switches to the fault luminous paths by controlling the second optical switch, and the detection of each fault luminous path is realized by the optical detection module;
the light receiving path a fails, the optical alarm module alarms, the light receiving path detection mode is started, the detection mode switching module controls the second optical switch to the light emitting path A, the control processor a controls the optical switch A to switch to WDM a2, and the light detection module realizes the detection of the light receiving path a through the optical fiber and the second optical switch; the p groups of light-emitting paths have multiple light path faults, and according to the alarm sequence of the fault light paths, the detection mode switching module polls and cuts the fault light paths by controlling the second optical switch, and the current fault light-receiving path detection is realized by 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, an application server controls a detection mode switching module through a central control processor to realize that a second optical switch selects a light emitting path a, the control processor a controls the optical switch a to select a light emitting path a21 to be connected to an end connector box a, a control optical detection module injects detection light into a multiplexing port of a WDM A1 through a fiber and the second optical switch, the detection light is demultiplexed by a demultiplexing port 3 of the WDM A2, and the light emitting path a in a monitoring group a is in a light emitting path fault detection mode at the moment, so that fault detection of an outgoing optical cable a, a line optical cable a and an incoming optical cable a of the light emitting path a is realized;
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 detection mode has the following working principle: in fig. 1, an application server controls a detection mode switching module through a central control processor to realize that a second optical switch selects a light emitting path a, remotely controls an optical switch a to select a light path a22 to be connected to a WDM A2 through a control processor a, controls an optical detection module to sequentially inject detection light to a multiplexing port 3 of the WDM A1 through a fiber and the second optical switch, demultiplexes the detection light through a demultiplexing port 3 of the WDM A2, injects the light path of the a22 through the fiber a and the optical switch a to a multiplexing port 3 of the WDM A2, multiplexes the light path to a light receiving path, injects the light path to an outbound optical cable a, a line optical cable a and an inbound optical cable a through the port 2, further injects the light path to a WMD A1, demultiplexes the light path a from the demultiplexing port 3 of the WMD A1 to the fiber a and a terminal connector box a, and detects that the light receiving path a in the monitoring group a is in a light receiving path fault detection mode, and detects faults of the outbound optical cable a, the line optical cable a and the inbound optical cable a.
Claims (4)
1. The system comprises p groups of monitoring groups, wherein the p groups of monitoring groups consist 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, the optical cable paths of the optical cable network of the p groups of electric power system are monitored on line and automatically detected in fault, and each group of optical cable optical paths form optical fiber communication between the local station and the transformer substation by two optical paths of an optical receiving path and an optical emitting path;
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 coiling, 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 optical fiber and a first end connector box;
the station end monitoring equipment of each transformer substation comprises a control processor, a first optical monitoring module, a first optical alarm 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 terminal connector box;
the central control processor is connected with 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 the transformer substation to realize remote control of the station end equipment;
the central control processor controls the optical interface of the first optical switch to be connected to the first optical splitter of the monitoring unit through controlling the detection mode switching module, and the optical monitoring module realizes on-line monitoring of the optical power of the first optical transmission receiving equipment end under the condition of normal optical communication of the receiving optical path through the first optical switch;
the central control processor controls the first optical switch through controlling the detection mode switching module, and is periodically and sequentially connected to the first optical splitters in each monitoring unit in a circulating way so as to realize the sequential monitoring of the optical power of each light receiving path;
the central control processor is connected to the second optical splitter through an optical interface of the first optical monitoring module by the data transmission network control processor, so that the optical power of the first optical transmission receiving equipment end is monitored on line under the normal optical communication condition of the light-emitting path;
the data acquisition module is connected with the optical monitoring module through an electric interface, is connected to the first optical switch through an optical interface, is periodically and sequentially and circularly connected to the first optical splitter of each monitoring unit, realizes the sequential acquisition of the optical power monitoring data of each monitored light receiving path, and is uploaded 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 electric interface to realize the alarm of the sequential indicator lamps of faults in the monitored multiple light receiving paths;
the first data acquisition module is connected with the first optical monitoring module through an electric interface to the second optical splitter, so that the acquisition of the optical power monitoring data of the light-emitting path is realized, and the optical power monitoring data is uploaded 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 electric interface, realizes the alarm of the fault indicator lamp of the monitored 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, is sequentially connected to the second demultiplexer, the second optical fiber and the optical switch through the light emitting path outgoing optical cable, the light emitting path optical cable and the light emitting path incoming optical cable, and realizes that the optical switch is connected to the second terminal connector box through the central control processor and the remote control processor, so that the optical cable light emitting path non-blind area fault detection mode is realized;
the central control processor controls the second optical switch through the detection mode switching module, and the first wavelength division multiplexer is periodically and sequentially connected to each monitoring unit to respectively realize the non-blind area fault detection mode of the luminous paths in each group of optical cable optical 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 optical disk and the optical switch through the light emitting path outgoing optical cable, the light emitting path optical cable and the light emitting path incoming optical cable, and is connected to the first demultiplexer, the first optical disk and the first end joint box through the remote control processor;
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, sequentially and respectively remotely controls the control processor of each station monitoring device, correspondingly realizes the connection of each optical switch with the corresponding second wavelength division multiplexer, and respectively realizes the non-blind area fault detection mode of the light receiving path in the corresponding optical cable light path.
2. The system for online monitoring and automatic fault detection of a non-blind area of an optical cable network of an electric power system according to claim 1, wherein the system comprises the following components:
the central control processor controls the second optical switch through the detection mode switching module, and the control processor controls the optical switch to realize free switching between the non-blind area fault detection mode of the light receiving path and the non-blind area fault detection mode of the light emitting path; each group of light emitting path and light receiving path independently selects a detection mode.
3. The system for online monitoring and automatic fault detection of a non-blind area of an optical cable network of an electric power system according to claim 1, wherein the system comprises the following components:
the data acquisition module is connected with the optical detection module through an electric interface, so that the sequential acquisition of the detection data of the light-emitting paths and the light-receiving paths with faults in each light-emitting path is realized, and the detection data is uploaded to the application server and the data server through the central control processor.
4. The system for online monitoring and automatic fault detection of a non-blind area of an optical cable network of an electric power system according to claim 1, wherein the system comprises the following components:
each light emitting path comprises a light emitting path outgoing optical cable, a light emitting path 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 optical cable and a light receiving path outgoing optical cable;
the optical receiving path incoming optical cable, the optical receiving path line optical cable and the optical receiving path outgoing optical cable are used for connecting the local side ODF and the station side ODF, and the light emitting path outgoing optical cable, the light emitting path optical cable and the light emitting path incoming optical cable are used for connecting the local side ODF and the station side ODF;
connecting a first optical splitter and a first demultiplexer in series to the ODFs at the two ends of the local side equipment by using an optical receiving circuit local core, and connecting a first wavelength division multiplexer to the ODFs at the two ends of the local side equipment by using an optical emitting circuit local core; the second wavelength division multiplexer is connected to the ODF at two ends of the station end equipment by using the fiber core in the receiving optical path station, and the second optical splitter and the second demultiplexer are connected in series to the ODF at two ends of the station end equipment by using the fiber core in the light emitting optical path station.
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| CN114221695B (en) * | 2021-12-14 | 2023-03-28 | 东北电力大学 | Electric power spanning optical cable line full-coverage detection system and method |
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