CN115389867B - Submarine cable state monitoring method and system integrating multiple signals - Google Patents
Submarine cable state monitoring method and system integrating multiple signals Download PDFInfo
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- 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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- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
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Abstract
The invention relates to the technical field of submarine cable monitoring, and particularly discloses a submarine cable state monitoring method and a submarine cable state monitoring system integrating multiple signals, wherein the method comprises the steps of reading recorded submarine cable wiring data, and establishing a circuit diagram containing a preset scale according to the submarine cable wiring data; determining monitoring point positions containing type labels based on the circuit diagram; and acquiring and storing monitoring data based on the monitoring point positions, and carrying out fault marking in the circuit diagram according to the monitoring data. According to the method, the magnetic field monitoring point locations and the electric power monitoring point locations are determined comprehensively according to the submarine cable wiring data, the magnetic field monitoring devices are installed at the magnetic field monitoring point locations, whether the submarine cables in the whole area have problems or not can be judged through the magnetic field monitoring devices, and if the submarine cables have problems, the states of the submarine cables are judged according to the electric power data obtained by the electric power monitoring devices installed at the electric power monitoring point locations. According to the invention, a judgment process based on a magnetic field is added before the judgment of the state of the submarine cable, so that the resource utilization efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of submarine cable monitoring, in particular to a submarine cable state monitoring method and system integrating multiple signals.
Background
Submarine cables (submarine cables) are wires wrapped with insulating materials and laid under the sea floor and river water for telecommunication transmission. Modern submarine cables use optical fiber as the material to transmit telephone and internet signals.
Submarine cables are divided into submarine communication cables and submarine power cables. Submarine communication cables are mainly used for communication services, are expensive, and have high confidentiality. The submarine power cable is mainly used for transmitting high-power electric energy underwater, has the same effect as an underground power cable, and is different from the submarine power cable in application occasions and laying modes.
Because the submarine cable is arranged below the sea surface, the maintenance process is more difficult compared with the ground cable, therefore, more monitoring equipment needs to be additionally arranged in the installation process of the submarine cable, and the state of the submarine cable is convenient to be controlled by workers in real time; however, the submarine cable has high design safety and low probability of problems, and the monitoring data of a plurality of monitoring devices are invalid and are data in a normal state; therefore, how to selectively control the identification process of the monitoring data is a technical problem to be solved by the technical scheme of the invention.
Disclosure of Invention
The present invention provides a method and a system for monitoring the state of a submarine cable integrating multiple signals, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a method of sea cable condition monitoring integrating multiple signals, the method comprising:
reading the recorded submarine cable wiring data, and establishing a circuit diagram containing a preset scale according to the submarine cable wiring data;
determining monitoring points containing type labels based on the circuit diagram; the type tag comprises a magnetic field monitoring type and a power monitoring type;
and acquiring and storing monitoring data based on the monitoring point positions, and carrying out fault marking in the circuit diagram according to the monitoring data.
As a further scheme of the invention: the step of determining the monitoring points containing the type labels based on the route map comprises the following steps:
acquiring the installation height and historical use data of each line; the historical use data is the mean value of the power data in unit time;
inputting the installation height and the historical use data into a preset magnetic field calculation model to obtain a three-dimensional magnetic vector field;
determining a magnetic field monitoring point position in the three-dimensional magnetic vector field;
and calculating a stable value of each line according to historical use data, determining a sampling interval of each line according to the stable value, and determining a power monitoring point position.
As a further scheme of the invention: the step of determining the magnetic field monitoring point position in the three-dimensional magnetic vector field comprises the following steps:
acquiring sea surface height containing time information; the sea surface height and the installation height are relative to the same reference surface;
extracting a plane magnetic vector field of a plane where the sea surface height is located from the three-dimensional magnetic vector field;
counting all the plane magnetic vector fields in a period, and determining the lowest magnetic field intensity of each point;
comparing the lowest magnetic field strength with a preset strength threshold value, and marking the point as a selectable point when the lowest magnetic field strength reaches the preset strength threshold value;
and displaying selectable points, receiving selection information of workers and determining magnetic field monitoring point positions.
As a further scheme of the invention: the step of calculating a stable value of each line according to historical use data, determining a sampling interval of each line according to the stable value, and determining a power monitoring point position comprises the following steps:
reading historical use data of each line, and fitting a power curve according to the historical use data;
acquiring a derivative curve of the power curve, intercepting the derivative curve according to a preset arithmetic mean value, and calculating the time length in each numerical range;
inputting the time length in each numerical range into a preset empirical formula to obtain a stable value of each line;
and determining the sampling interval of each line according to the stable value, receiving initial selection information of workers, and determining the power monitoring point position.
As a further scheme of the invention: the step of acquiring and storing monitoring data based on monitoring point locations and performing fault marking in the circuit diagram according to the monitoring data comprises the following steps:
when the monitoring point location is a magnetic field monitoring point location, acquiring the magnetic field intensity containing time information according to a preset acquisition frequency;
reading all the counted planar magnetic vector fields in one period, and selecting the planar magnetic vector field corresponding to the magnetic field intensity according to time information;
judging whether the magnetic field intensity is abnormal or not based on the selected planar magnetic vector field;
and counting the abnormity judgment results of all monitoring point positions, and marking faults in the circuit diagram according to the abnormity judgment results.
As a further scheme of the invention: the step of counting the abnormal judgment results of all the monitoring point locations and marking the faults in the circuit diagram according to the abnormal judgment results comprises the following steps:
when the number of the abnormal magnetic field intensity reaches a preset number threshold, reading electric power data of each electric power monitoring point;
inputting the power data into a preset power identification model, and determining a problem line;
the problem line is marked in the line graph.
The technical scheme of the invention also provides a submarine cable state monitoring system integrating various signals, which comprises:
the circuit diagram establishing module is used for reading the recorded submarine cable wiring data and establishing a circuit diagram containing a preset scale according to the submarine cable wiring data;
the monitoring point location determining module is used for determining monitoring point locations containing type labels based on the circuit diagram; the type tag comprises a magnetic field monitoring type and a power monitoring type;
and the fault marking module is used for acquiring and storing monitoring data based on the monitoring point positions and marking faults in the circuit diagram according to the monitoring data.
As a further scheme of the invention: the monitoring point location determination module comprises:
the data acquisition unit is used for acquiring the installation height and historical use data of each line; the historical use data is the mean value of the power data in unit time;
the vector field establishing unit is used for inputting the installation height and the historical use data into a preset magnetic field calculation model to obtain a three-dimensional magnetic vector field;
the magnetic field point location determining unit is used for determining a magnetic field monitoring point location in the three-dimensional magnetic vector field;
and the power point location determining unit is used for calculating a stable value of each line according to the historical use data, determining the sampling interval of each line according to the stable value and determining the power monitoring point location.
As a further scheme of the invention: the magnetic field point location determining unit includes:
the height acquisition subunit is used for acquiring the sea surface height containing the time information; the sea surface height and the installation height are relative to the same reference surface;
the plane intercepting subunit is used for extracting a plane magnetic vector field of a plane where the sea surface height is located from the three-dimensional magnetic vector field;
the statistical subunit is used for counting all the plane magnetic vector fields in a period and determining the lowest magnetic field intensity of each point;
the comparison marking subunit is used for comparing the lowest magnetic field strength with a preset strength threshold value, and marking the point as a selectable point when the lowest magnetic field strength reaches the preset strength threshold value;
and the selected information receiving subunit is used for displaying the selectable points, receiving the selected information of the staff and determining the magnetic field monitoring point positions.
As a further scheme of the invention: the fault flagging module comprises:
the field intensity acquisition unit is used for acquiring the magnetic field intensity containing time information according to a preset acquisition frequency when the monitoring point location is a magnetic field monitoring point location;
the vector field reading unit is used for reading all the counted planar magnetic vector fields in a period and selecting the planar magnetic vector field corresponding to the magnetic field intensity according to the time information;
the abnormity judging unit is used for judging whether the magnetic field intensity is abnormal or not based on the selected planar magnetic vector field;
and the result counting unit is used for counting the abnormal judgment results of all the monitoring point positions and marking the fault in the circuit diagram according to the abnormal judgment results.
Compared with the prior art, the invention has the beneficial effects that: the invention comprehensively determines the magnetic field monitoring point position and the electric power monitoring point position according to the submarine cable wiring data, the magnetic field monitoring equipment is arranged at the magnetic field monitoring point position, whether the submarine cable in the whole area has problems can be judged through the magnetic field monitoring equipment, and if the submarine cable has problems, the state of the submarine cable is judged according to the electric power data acquired by the electric power monitoring equipment arranged at the electric power monitoring point position. According to the invention, a judgment process based on a magnetic field is added before the judgment of the state of the submarine cable, so that the resource utilization efficiency is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a flow chart of a submarine cable condition monitoring method integrating multiple signals.
Fig. 2 is a first sub-flow block diagram of a submarine cable condition monitoring method integrating multiple signals.
Fig. 3 is a second sub-flow block diagram of a submarine cable condition monitoring method integrating multiple signals.
Fig. 4 is a block diagram of a component structure of a submarine cable state monitoring system integrating multiple signals.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Fig. 1 is a flow chart of a submarine cable state monitoring method integrating multiple signals, in an embodiment of the present invention, the submarine cable state monitoring method integrating multiple signals includes steps S100 to S300:
step S100: reading the recorded submarine cable wiring data, and establishing a circuit diagram containing a preset scale according to the submarine cable wiring data;
the submarine cable wiring process can be recorded, and the installation position, the submarine cable type, the rated parameters and the like of the submarine cable can be read in a recording database; a circuit diagram can be established according to the submarine cable wiring data, and a definite scale exists between the circuit diagram and the actual environment.
Step S200: determining monitoring point positions containing type labels based on the circuit diagram; the type tag comprises a magnetic field monitoring type and a power monitoring type;
the method comprises the following steps that a corresponding relation exists between a circuit diagram and an actual submarine cable wiring condition, and some monitoring point positions can be determined based on the circuit diagram and are used for installing monitoring equipment; the monitoring equipment mainly has two types, one type is magnetic field monitoring equipment, and the other type is electric parameter monitoring equipment; when the monitoring point location is determined in the circuit diagram, the type of the monitoring node needs to be marked.
Step S300: acquiring and storing monitoring data based on monitoring point positions, and carrying out fault marking in the circuit diagram according to the monitoring data;
and installing monitoring equipment based on the monitoring point positions, receiving the monitoring data acquired by the monitoring equipment, identifying the monitoring data, judging whether the submarine cable is in an abnormal state, and marking in a circuit diagram.
Fig. 2 is a first sub-flow block diagram of a submarine cable state monitoring method integrating multiple signals, where the step of determining a monitoring point location containing a type tag based on the wiring diagram includes steps S201 to S204:
step S201: acquiring the installation height and historical use data of each line; the historical use data is the mean value of the power data in unit time;
the reference point is generally set above the sea surface, such as the plane where the sea surface platform is located; at this time, the installation height of each line is a negative value; historical usage data of the line may be defined as current, i.e., the average of current over each month, week, or day.
Step S202: inputting the installation height and the historical use data into a preset magnetic field calculation model to obtain a three-dimensional magnetic vector field;
a three-dimensional magnetic vector field can be established according to the installation height and historical use data, the establishment process adopts the existing physical formula, and the accuracy requirement is not high; in a three-dimensional magnetic vector field, the magnetic induction (vector) of each point needs to be calculated, and the magnetic induction of each point is the superposition state of magnetic fields generated by all lines.
Step S203: determining a magnetic field monitoring point position in the three-dimensional magnetic vector field;
after the three-dimensional magnetic vector field is established, magnetic field monitoring point positions can be determined according to the three-dimensional magnetic vector field and are used for installing magnetic field monitoring equipment.
Step S204: calculating a stable value of each line according to historical use data, determining a sampling interval of each line according to the stable value, and determining a power monitoring point location;
the power monitoring equipment is some meters installed in the lines, the sampling interval of each line can be determined according to historical use data, and power monitoring point positions can be determined based on the sampling interval.
As a preferred embodiment of the technical solution of the present invention, the step of determining the magnetic field monitoring point location in the three-dimensional magnetic vector field includes:
acquiring sea surface height containing time information; the sea surface height and the installation height are relative to the same reference surface;
extracting a plane magnetic vector field of a plane where the sea surface height is located from the three-dimensional magnetic vector field;
counting all the plane magnetic vector fields in a period, and determining the lowest magnetic field intensity of each point;
comparing the lowest magnetic field strength with a preset strength threshold value, and marking the point as a selectable point when the lowest magnetic field strength reaches the preset strength threshold value;
and displaying selectable points, receiving selection information of workers and determining magnetic field monitoring point positions.
The determination process of the magnetic field monitoring point is specifically limited, and the purpose is to limit the magnetic field monitoring equipment to floating magnetic field monitoring equipment, and the floating magnetic field monitoring equipment can change the distance between the floating magnetic field monitoring equipment and the submarine cable along with the tidal action; if there is only one submarine cable, then the change in distance is negligible; however, sometimes more than one submarine cable or other devices generate some disturbing magnetic fields, and when magnetic fields in multiple directions are superimposed on each other, it is likely that the magnetic field-generated forces at some points will cancel each other (rather than the magnetic fields cancel each other).
Therefore, the established three-dimensional magnetic vector field is intercepted according to the sea surface height to obtain all plane magnetic vector fields in a period, then whether points with too low magnetic field intensity (scalar and vector) exist in all the plane magnetic vector fields at all the points is counted, and if the points exist, the points are not suitable for installing magnetic field monitoring equipment.
Some point positions with large enough magnetic field intensity are selected as optional magnetic field monitoring point positions, and the final installation position of the magnetic field monitoring equipment can be determined based on the optional magnetic field monitoring point positions and the selection information of workers.
Further, the step of calculating a stable value of each line according to the historical usage data, determining a sampling interval of each line according to the stable value, and determining the power monitoring point location includes:
reading historical use data of each line, and fitting a power curve according to the historical use data;
acquiring a derivative curve of the power curve, intercepting the derivative curve according to a preset arithmetic mean value, and calculating the time length in each numerical range;
inputting the time length in each numerical range into a preset empirical formula to obtain a stable value of each line;
and determining the sampling interval of each line according to the stable value, receiving initial selection information of workers, and determining the power monitoring point position.
The above details the judgment process of the power monitoring point location, and the principle thereof is that the historical use data is converted into a power curve, then derivation is performed, and the stability of each line is judged by a derivative curve; the sampling interval of a circuit with high stability can be larger, and the number of installed electric power monitoring equipment is less; the line that stability is low, the sampling interval can be littleer, and the power monitoring device that installs is some more.
Fig. 3 is a second sub-flow block diagram of the submarine cable state monitoring method integrating multiple signals, where the step of acquiring and storing monitoring data based on monitoring point locations and performing fault marking in the circuit diagram according to the monitoring data includes steps S301 to S304:
step S301: when the monitoring point location is a magnetic field monitoring point location, acquiring the magnetic field intensity containing time information according to a preset acquisition frequency;
magnetic field monitoring equipment is arranged at the magnetic field monitoring point position, the magnetic field has an effect on the current, and the effect of the effect can reflect the intensity of the magnetic field;
step S302: reading all the counted planar magnetic vector fields in one period, and selecting the planar magnetic vector field corresponding to the magnetic field intensity according to time information;
reading all the counted planar magnetic vector fields, and selecting the corresponding planar magnetic vector field as reference data according to the time information (acquisition time) of the magnetic field intensity;
step S303: judging whether the magnetic field intensity is abnormal or not based on the selected planar magnetic vector field;
according to the reference data, whether the actually monitored magnetic field intensity is abnormal or not can be judged, and all submarine cables are detected in the process;
step S304: counting the abnormal judgment results of all monitoring point positions, and marking faults in the circuit diagram according to the abnormal judgment results;
each monitoring point position is provided with a magnetic field monitoring device, abnormal judgment results corresponding to all the magnetic field monitoring devices are counted, and whether the submarine cables are abnormal or not can be judged.
Specifically, the step of counting the abnormal judgment results of all monitoring point locations and marking the fault in the circuit diagram according to the abnormal judgment results includes:
when the number of the abnormal magnetic field intensity reaches a preset number threshold, reading electric power data of each electric power monitoring point;
inputting the power data into a preset power identification model, and determining a problem line;
the problem line is marked in the line graph.
If the submarine cables in all the submarine cables are abnormal, the electric power data need to be identified, and the electric power data are acquired by electric power monitoring equipment arranged at an electric power monitoring point position and can reflect the abnormal state of each submarine cable; the process of determining the state of the sea cable from the power data may employ existing identification techniques.
Example 2
Fig. 4 is a block diagram of a component structure of a submarine cable state monitoring system integrating multiple signals, in an embodiment of the present invention, the submarine cable state monitoring system integrating multiple signals includes:
the circuit diagram establishing module 11 is used for reading the recorded submarine cable wiring data and establishing a circuit diagram with a preset scale according to the submarine cable wiring data;
the monitoring point location determining module 12 is configured to determine a monitoring point location containing a type tag based on the route map; the type tag comprises a magnetic field monitoring type and a power monitoring type;
and the fault marking module 13 is configured to acquire and store monitoring data based on the monitoring point location, and perform fault marking in the circuit diagram according to the monitoring data.
The monitoring point location determining module 12 includes:
the data acquisition unit is used for acquiring the installation height and historical use data of each line; the historical use data is the mean value of the power data in unit time;
the vector field establishing unit is used for inputting the installation height and the historical use data into a preset magnetic field calculation model to obtain a three-dimensional magnetic vector field;
the magnetic field point location determining unit is used for determining a magnetic field monitoring point location in the three-dimensional magnetic vector field;
and the power point location determining unit is used for calculating a stable value of each line according to the historical use data, determining the sampling interval of each line according to the stable value and determining the power monitoring point location.
The magnetic field point location determining unit includes:
the height acquisition subunit is used for acquiring the sea surface height containing the time information; the sea surface height and the installation height are relative to the same reference surface;
the plane intercepting subunit is used for extracting a plane magnetic vector field of a plane where the sea surface height is located from the three-dimensional magnetic vector field;
the statistical subunit is used for counting all the plane magnetic vector fields in a period and determining the lowest magnetic field intensity of each point;
the comparison marking subunit is used for comparing the lowest magnetic field strength with a preset strength threshold value, and marking the point as a selectable point when the lowest magnetic field strength reaches the preset strength threshold value;
and the selected information receiving subunit is used for displaying the selectable points, receiving the selected information of the staff and determining the magnetic field monitoring point positions.
The failure marking module 13 includes:
the field intensity acquisition unit is used for acquiring the magnetic field intensity containing time information according to a preset acquisition frequency when the monitoring point location is a magnetic field monitoring point location;
the vector field reading unit is used for reading all the counted planar magnetic vector fields in one period and selecting the planar magnetic vector field corresponding to the magnetic field intensity according to the time information;
the abnormity judging unit is used for judging whether the magnetic field intensity is abnormal or not based on the selected planar magnetic vector field;
and the result counting unit is used for counting the abnormal judgment results of all the monitoring point positions and marking the fault in the circuit diagram according to the abnormal judgment results.
The functions which can be realized by the submarine cable state monitoring method integrating multiple signals are all completed by computer equipment, the computer equipment comprises one or more processors and one or more memories, at least one program code is stored in the one or more memories, and the program code is loaded and executed by the one or more processors to realize the functions of the submarine cable state monitoring method integrating multiple signals.
The processor fetches instructions and analyzes the instructions one by one from the memory, then completes corresponding operations according to the instruction requirements, generates a series of control commands, enables all parts of the computer to automatically, continuously and coordinately act to form an organic whole, realizes the input of programs, the input of data, the operation and the output of results, and the arithmetic operation or the logic operation generated in the process is completed by the arithmetic unit; the Memory comprises a Read-Only Memory (ROM) which is used for storing computer programs, and a protection device is arranged outside the Memory.
Illustratively, the computer program may be partitioned into one or more modules, stored in memory and executed by a processor, to implement the invention. One or more of the modules may be a series of computer program instruction segments capable of performing certain functions, which are used to describe the execution of the computer program in the terminal device.
Those skilled in the art will appreciate that the above description of the service device is merely exemplary and not limiting of the terminal device, and may include more or less components than those described, or combine certain components, or different components, such as may include input output devices, network access devices, buses, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is the control center of the terminal equipment and connects the various parts of the entire user terminal using various interfaces and lines.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the terminal device by operating or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory mainly comprises a storage program area and a storage data area, wherein the storage program area can store an operating system, application programs (such as an information acquisition template display function, a product information publishing function and the like) required by at least one function and the like; the storage data area may store data created according to the use of the berth-state display system (e.g., product information acquisition templates corresponding to different product types, product information that needs to be issued by different product providers, etc.), and the like. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The terminal device integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the modules/units in the system according to the above embodiment may be implemented by a computer program, which may be stored in a computer-readable storage medium and used by a processor to implement the functions of the embodiments of the system. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (5)
1. A method for monitoring the condition of a submarine cable integrating multiple signals, the method comprising:
reading the recorded submarine cable wiring data, and establishing a circuit diagram containing a preset scale according to the submarine cable wiring data;
determining monitoring point positions containing type labels based on the circuit diagram; the type tag comprises a magnetic field monitoring type and a power monitoring type;
acquiring and storing monitoring data based on monitoring point positions, and carrying out fault marking in the circuit diagram according to the monitoring data;
the step of determining the monitoring point locations containing type labels based on the wiring diagram comprises:
acquiring the installation height and historical use data of each line; the historical use data is the mean value of the power data in unit time;
inputting the installation height and the historical use data into a preset magnetic field calculation model to obtain a three-dimensional magnetic vector field;
determining a magnetic field monitoring point position in the three-dimensional magnetic vector field;
calculating a stable value of each line according to historical use data, determining a sampling interval of each line according to the stable value, and determining a power monitoring point position;
the step of determining the magnetic field monitoring point position in the three-dimensional magnetic vector field comprises the following steps:
acquiring sea surface height containing time information; the sea surface height and the installation height are relative to the same reference surface;
extracting a plane magnetic vector field of a plane where the sea surface height is located from the three-dimensional magnetic vector field;
counting all the plane magnetic vector fields in a period, and determining the lowest magnetic field intensity of each point;
comparing the lowest magnetic field strength with a preset strength threshold value, and marking the point as a selectable point when the lowest magnetic field strength reaches the preset strength threshold value;
displaying selectable points, receiving selection information of workers and determining magnetic field monitoring point positions;
the step of calculating a stable value of each line according to historical use data, determining a sampling interval of each line according to the stable value, and determining a power monitoring point position comprises the following steps:
reading historical use data of each line, and fitting a power curve according to the historical use data;
acquiring a derivative curve of the power curve, intercepting the derivative curve according to a preset arithmetic mean value, and calculating the time length in each numerical range;
inputting the time length in each numerical range into a preset empirical formula to obtain a stable value of each line;
and determining the sampling interval of each line according to the stable value, receiving initial selection information of workers, and determining the power monitoring point position.
2. The submarine cable state monitoring method according to claim 1, wherein the step of acquiring and storing monitoring data based on monitoring points, and the step of marking faults in the layout according to the monitoring data comprises:
when the monitoring point location is a magnetic field monitoring point location, acquiring the magnetic field intensity containing time information according to a preset acquisition frequency;
reading all the counted planar magnetic vector fields in one period, and selecting the planar magnetic vector field corresponding to the magnetic field intensity according to time information;
judging whether the magnetic field intensity is abnormal or not based on the selected planar magnetic vector field;
and counting the abnormal judgment results of all the monitoring point positions, and marking the fault in the circuit diagram according to the abnormal judgment results.
3. The submarine cable state monitoring method according to claim 2, wherein the step of counting the abnormal judgment results of all the monitored points and marking faults in the circuit diagram according to the abnormal judgment results comprises:
when the number of the abnormal magnetic field intensity reaches a preset number threshold, reading electric power data of each electric power monitoring point;
inputting the power data into a preset power identification model, and determining a problem line;
the problem line is marked in the line graph.
4. A multi-signal integrated sea cable condition monitoring system, the system comprising:
the circuit diagram establishing module is used for reading the recorded submarine cable wiring data and establishing a circuit diagram containing a preset scale according to the submarine cable wiring data;
the monitoring point location determining module is used for determining the monitoring point location containing the type label based on the circuit diagram; the type tag comprises a magnetic field monitoring type and a power monitoring type;
the fault marking module is used for acquiring and storing monitoring data based on the monitoring point positions and marking faults in the circuit diagram according to the monitoring data;
the monitoring point location determination module comprises:
the data acquisition unit is used for acquiring the installation height and historical use data of each line; the historical use data is the mean value of the power data in unit time;
the vector field establishing unit is used for inputting the installation height and the historical use data into a preset magnetic field calculation model to obtain a three-dimensional magnetic vector field;
the magnetic field point location determining unit is used for determining a magnetic field monitoring point location in the three-dimensional magnetic vector field;
the power point location determining unit is used for calculating a stable value of each line according to historical use data, determining a sampling interval of each line according to the stable value and determining a power monitoring point location;
the magnetic field point location determining unit includes:
the height acquisition subunit is used for acquiring the sea surface height containing the time information; the sea surface height and the installation height are relative to the same reference surface;
the plane intercepting subunit is used for extracting a plane magnetic vector field of a plane where the sea surface height is located from the three-dimensional magnetic vector field;
the statistical subunit is used for counting all the plane magnetic vector fields in a period and determining the lowest magnetic field intensity of each point;
the comparison marking subunit is used for comparing the lowest magnetic field strength with a preset strength threshold value, and marking the point as a selectable point when the lowest magnetic field strength reaches the preset strength threshold value;
the selected information receiving subunit is used for displaying selectable points, receiving selected information of workers and determining magnetic field monitoring point positions;
the step of calculating a stable value of each line according to historical use data, determining a sampling interval of each line according to the stable value, and determining the content of the power monitoring point location comprises the following steps:
reading historical use data of each line, and fitting a power curve according to the historical use data;
acquiring a derivative curve of the power curve, intercepting the derivative curve according to a preset arithmetic mean value, and calculating the time length in each numerical range;
inputting the time length in each numerical range into a preset empirical formula to obtain a stable value of each line;
and determining the sampling interval of each line according to the stable value, receiving initial selection information of workers, and determining the power monitoring point position.
5. The multi-signal integrated sea cable condition monitoring system of claim 4, wherein said fault flag module comprises:
the field intensity acquisition unit is used for acquiring the magnetic field intensity containing time information according to a preset acquisition frequency when the monitoring point location is a magnetic field monitoring point location;
the vector field reading unit is used for reading all the counted planar magnetic vector fields in one period and selecting the planar magnetic vector field corresponding to the magnetic field intensity according to the time information;
the abnormity judging unit is used for judging whether the magnetic field intensity is abnormal or not based on the selected planar magnetic vector field;
and the result counting unit is used for counting the abnormal judgment results of all the monitoring point positions and marking the fault in the circuit diagram according to the abnormal judgment results.
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| CN102636730B (en) * | 2012-02-22 | 2014-01-08 | 上海海事大学 | Temperature rise strain monitoring and alarming and fault analysis method for composite submarine cable |
| CN102735996B (en) * | 2012-07-17 | 2014-12-03 | 国家电网公司 | Exact locating method for fault points of submarine cable |
| CN103258256A (en) * | 2013-04-12 | 2013-08-21 | 国家电网公司 | Cable line condition monitoring multi-dimensional visual management platform |
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