CN115372749A - Monitoring method, system, equipment and storage medium of power transmission line - Google Patents

Monitoring method, system, equipment and storage medium of power transmission line Download PDF

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Publication number
CN115372749A
CN115372749A CN202211308994.4A CN202211308994A CN115372749A CN 115372749 A CN115372749 A CN 115372749A CN 202211308994 A CN202211308994 A CN 202211308994A CN 115372749 A CN115372749 A CN 115372749A
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China
Prior art keywords
monitoring
strain
information
vibration
transmission line
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CN202211308994.4A
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CN115372749B (en
Inventor
罗丁元
陈雄颖
蔡俊
吴宝锋
方晓莉
郑林贤
邓林波
闫佐辉
唐根
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Zhongguancun Technology Leasing Co ltd
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Qualsen International Technologies Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Locating Faults (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The invention relates to the technical field of power equipment monitoring, in particular to a method, a system, equipment and a storage medium for monitoring a power transmission line. The method comprises the steps of determining the position of a line with abnormality in the power transmission line based on vibration information, strain information and temperature information by acquiring and analyzing optical signals transmitted in optical fibers in the power transmission line; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; therefore, the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved.

Description

Monitoring method, system, equipment and storage medium of power transmission line
Technical Field
The invention relates to the technical field of power equipment monitoring, in particular to a method, a system, equipment and a storage medium for monitoring a power transmission line.
Background
The method has important significance for monitoring the power equipment, particularly for effectively monitoring the power transmission line, and for normal operation of a power system.
In the existing transmission line monitoring scheme, corresponding monitoring devices are usually installed on a transmission tower and a transmission line, and monitoring information is transmitted to a monitoring platform in a wireless communication mode, but the wireless communication mode is easily influenced by the environment, so that the online rate of equipment is low, and the availability is low. An effective monitoring scheme of the power transmission line based on optical sensing is lacked in the prior art.
In conclusion, the problem that the power transmission line cannot be effectively monitored based on optical sensing exists in the prior art.
Disclosure of Invention
The application mainly aims to provide a monitoring method, a monitoring system, monitoring equipment and a storage medium of a power transmission line, so as to solve the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art.
The first aspect of the invention provides a method for monitoring a power transmission line, which comprises the following steps: acquiring an optical signal transmitted in an optical fiber in a power transmission line; analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information; analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information; determining the position of the abnormal line in the power transmission line based on the vibration information, the strain information and the temperature information; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated through a modulation device corresponding to the acquisition equipment; and generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode.
Optionally, in a first implementation manner of the first aspect of the present invention, the vibration information, the strain information, and the temperature information are analyzed to obtain vibration, strain, and temperature corresponding to each monitored location on the power transmission line; inquiring a risk value coefficient corresponding to each monitoring position from a preset risk value coefficient table, and determining a corresponding risk value based on the vibration, the strain and the temperature according to the risk value coefficient; and querying a risk threshold corresponding to each monitoring position from a preset risk threshold table, and determining the position of the abnormal line in the power transmission line according to the risk threshold and the risk value, wherein the position of the abnormal line in the power transmission line is the corresponding monitoring position when the risk value is greater than the risk threshold.
Optionally, in a second implementation manner of the first aspect of the present invention, before querying a risk threshold corresponding to each monitored location from a preset risk threshold table, the method further includes: determining a monitoring subject and a position range according to the monitoring position, and reading corresponding weather data and corresponding map data from a preset environment data platform according to the position range, wherein the position range is a range of which the distance from the subject to the position is smaller than a preset distance threshold; determining a weather type according to the weather data, and determining a first threshold reference value according to the weather type; determining a region type according to the map data, and determining a second threshold reference value according to the region type; determining a subject parameter corresponding to the monitoring subject according to the monitoring subject, and determining a third threshold reference value based on the subject parameter; determining a vibration risk threshold corresponding to the monitoring position according to the first threshold reference value, the second threshold reference value and the third threshold reference value; and generating the vibration risk threshold value table based on the monitoring position and the vibration risk threshold value corresponding to the monitoring position.
Optionally, in a third implementation form of the first aspect of the present invention, the body parameters include a body type, a body size, and a vibration overhaul state; the determining a third threshold reference value based on the subject parameter comprises: determining a corresponding vibration sensitive point position and a vibration tolerance corresponding to the vibration sensitive point position from a preset equipment parameter table according to the main body type; determining a vibration tolerance coefficient corresponding to each vibration sensitive point based on the size of the main body; adjusting the vibration tolerance based on the vibration tolerance coefficient, and selecting a minimum vibration tolerance and a vibration key point, wherein the minimum vibration tolerance is the minimum vibration tolerance in the vibration tolerances corresponding to the vibration sensitive points, and the vibration key point is the vibration sensitive point corresponding to the minimum vibration tolerance; generating a maintenance risk coefficient according to the vibration maintenance state corresponding to the vibration key point; determining a third threshold reference value based on the minimum vibration tolerance and the service risk factor.
Optionally, in a fourth implementation manner of the first aspect of the present invention, before querying a risk threshold corresponding to each monitored location from a preset risk threshold table, the risk threshold table further includes: determining a strain monitoring main body according to the monitoring position, and determining strain main body parameters corresponding to the strain monitoring main body according to the strain monitoring main body; extracting the type of a strain body, the size of the strain body and the strain overhaul state from the strain body parameters; acquiring microclimate data corresponding to the monitoring position, and extracting the environmental temperature corresponding to the monitoring position from the microclimate data, wherein the microclimate data is acquired by a microclimate sensor preset at the monitoring position; determining a corresponding strain sensitive point position and a strain tolerance corresponding to the strain sensitive point position from a preset equipment parameter table according to the type of the strain body; determining a strain tolerance coefficient corresponding to each strain sensitive point based on the environment temperature and the size of the main body; adjusting the strain tolerance based on the strain tolerance coefficient, and selecting a minimum strain tolerance and a strain key point, wherein the minimum strain tolerance is the minimum strain tolerance in the strain tolerances corresponding to the strain sensitive points, and the strain key point is the strain sensitive point corresponding to the minimum strain tolerance; generating a strain maintenance risk coefficient according to the strain maintenance state corresponding to the strain key point; determining a strain risk threshold corresponding to the monitoring position based on the minimum strain tolerance and the strain overhaul risk coefficient; and generating the strain risk threshold value table based on the monitoring position and the strain risk threshold value corresponding to the monitoring position.
Optionally, in a fifth implementation manner of the first aspect of the present invention, the risk threshold table further includes a temperature measurement risk threshold table, and before the risk threshold corresponding to each monitored location is queried from a preset risk threshold table, the method further includes: determining a temperature measurement monitoring main body according to the monitoring position, and reading the temperature measurement main body type, the temperature measurement position, the main body operation condition and the temperature measurement overhaul state corresponding to the temperature measurement monitoring main body from a preset power transmission line data platform according to the temperature measurement monitoring main body; determining a corresponding temperature measurement sensitive point position and a temperature measurement tolerance corresponding to the temperature measurement sensitive point position from a preset equipment parameter table according to the type of the temperature measurement main body; determining temperature measurement tolerance coefficients corresponding to the temperature measurement sensitive points based on the main body operation condition and the temperature measurement positions; adjusting the temperature measurement tolerance based on the temperature measurement tolerance coefficient, and selecting a minimum temperature measurement tolerance and a temperature measurement key point, wherein the minimum temperature measurement tolerance is the minimum temperature measurement tolerance in the temperature measurement tolerances corresponding to the temperature measurement sensitive points, and the temperature measurement key point is the temperature measurement sensitive point corresponding to the minimum temperature measurement tolerance; generating a temperature measurement maintenance risk coefficient according to the temperature measurement maintenance state corresponding to the temperature measurement key point; determining a temperature measurement risk threshold corresponding to the monitoring position based on the minimum temperature measurement tolerance and the temperature measurement overhaul risk coefficient; and generating the temperature measurement risk threshold value table based on the monitoring position and the temperature measurement risk threshold value corresponding to the monitoring position.
Optionally, in a sixth implementation manner of the first aspect of the present invention, before the acquiring an optical signal transmitted in an optical fiber in a power transmission line, the method further includes: collecting environmental information of each monitoring position on the power transmission line through preset sensing equipment; and generating a disturbance signal based on the environmental information through the sensing equipment, and acting the disturbance signal on an optical fiber in the power transmission line.
A second aspect of the present invention provides a monitoring system for a power transmission line, including: the sensing module is used for acquiring environmental information of each monitoring position on the power transmission line, generating a disturbance signal based on the environmental information and acting the disturbance signal on an optical fiber in the power transmission line; acquiring an optical signal transmitted in an optical fiber in a power transmission line; analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information; analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information; the monitoring module is used for determining the position of the abnormal line in the power transmission line based on the vibration information, the strain information and the temperature information; the system self-checking module is used for inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; controlling the acquisition equipment to acquire self-checking modulation information and self-checking state information of the power transmission line at the line position, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated by a modulation device corresponding to the acquisition equipment; detecting the acquisition equipment to obtain a self-detection result; and the display module is used for generating monitoring information based on the line position and the self-checking result and displaying the monitoring information in a preset display mode.
Optionally, in a first implementation manner of the second aspect of the present invention, the monitoring module includes: the analysis unit is used for analyzing the vibration information, the strain information and the temperature information to obtain vibration, strain and temperature corresponding to each monitoring position on the power transmission line; the first query unit is used for querying a risk value coefficient corresponding to each monitoring position from a preset risk value coefficient table and determining a corresponding risk value based on the vibration, the strain and the temperature according to the risk value coefficient; and the second query unit is used for querying a risk threshold corresponding to each monitoring position from a preset risk threshold table, and determining a line position with an abnormality in the power transmission line according to the risk threshold and the risk value, wherein the line position with the abnormality in the power transmission line is the corresponding monitoring position when the risk value is greater than the risk threshold.
Optionally, in a second implementation manner of the second aspect of the present invention, the monitoring system of the power transmission line further includes a first generating module, configured to determine a monitoring subject and a location range according to the monitoring location, and read corresponding weather data and corresponding map data from a preset environment data platform according to the location range, where the location range is a range in which a distance from the monitoring subject to the location is smaller than a preset distance threshold; determining a weather type according to the weather data, and determining a first threshold reference value according to the weather type; determining a region type according to the map data, and determining a second threshold reference value according to the region type; determining a subject parameter corresponding to the monitoring subject according to the monitoring subject, and determining a third threshold reference value based on the subject parameter; determining a vibration risk threshold corresponding to the monitoring position according to the first threshold reference value, the second threshold reference value and the third threshold reference value; and generating the vibration risk threshold value table based on the monitoring position and the vibration risk threshold value corresponding to the monitoring position.
Optionally, in a third implementation manner of the second aspect of the present invention, the first generating module is further configured to determine, according to the subject type, a corresponding vibration-sensitive point location and a vibration tolerance corresponding to the vibration-sensitive point location from a preset device parameter table; determining a vibration tolerance coefficient corresponding to each vibration sensitive point based on the size of the main body; adjusting the vibration tolerance based on the vibration tolerance coefficient, and selecting a minimum vibration tolerance and a vibration key point, wherein the minimum vibration tolerance is the minimum vibration tolerance in the vibration tolerances corresponding to the vibration sensitive points, and the vibration key point is the vibration sensitive point corresponding to the minimum vibration tolerance; generating a maintenance risk coefficient according to the vibration maintenance state corresponding to the vibration key point; determining a third threshold reference value based on the minimum vibration tolerance and the service risk factor.
Optionally, in a fourth implementation manner of the second aspect of the present invention, the monitoring system of the power transmission line further includes a second generating module, configured to determine a strain monitoring subject according to the monitoring position, and determine a strain subject parameter corresponding to the strain monitoring subject according to the strain monitoring subject; extracting the type of a strain body, the size of the strain body and the strain overhaul state from the strain body parameters; acquiring microclimate data corresponding to the monitoring position, and extracting the ambient temperature corresponding to the monitoring position from the microclimate data, wherein the microclimate data are acquired by a microclimate sensor preset at the monitoring position; determining a corresponding strain sensitive point position and a strain tolerance corresponding to the strain sensitive point position from a preset equipment parameter table according to the type of the strain body; determining a strain tolerance coefficient corresponding to each strain sensitive point based on the environment temperature and the size of the main body; adjusting the strain tolerance based on the strain tolerance coefficient, and selecting a minimum strain tolerance and a strain key point, wherein the minimum strain tolerance is the minimum strain tolerance in the strain tolerances corresponding to the strain sensitive points, and the strain key point is the strain sensitive point corresponding to the minimum strain tolerance; generating a strain maintenance risk coefficient according to a strain maintenance state corresponding to the strain key point; determining a strain risk threshold corresponding to the monitoring position based on the minimum strain tolerance and the strain overhaul risk coefficient; and generating the strain risk threshold value table based on the monitoring position and the strain risk threshold value corresponding to the monitoring position.
Optionally, in a fifth implementation manner of the second aspect of the present invention, the monitoring system of the power transmission line further includes a third generation module, configured to determine a temperature measurement monitoring subject according to the monitoring position, and read a temperature measurement subject type, a temperature measurement position, a subject operation condition, and a temperature measurement overhaul state corresponding to the temperature measurement monitoring subject from a preset power transmission line data platform according to the temperature measurement monitoring subject; determining a corresponding temperature measurement sensitive point position and a temperature measurement tolerance corresponding to the temperature measurement sensitive point position from a preset equipment parameter table according to the type of the temperature measurement main body; determining temperature measurement tolerance coefficients corresponding to the temperature measurement sensitive points based on the main body operation condition and the temperature measurement positions; adjusting the temperature measurement tolerance based on the temperature measurement tolerance coefficient, and selecting a minimum temperature measurement tolerance and a temperature measurement key point, wherein the minimum temperature measurement tolerance is the minimum temperature measurement tolerance in the temperature measurement tolerances corresponding to the temperature measurement sensitive points, and the temperature measurement key point is the temperature measurement sensitive point corresponding to the minimum temperature measurement tolerance; generating a temperature measurement maintenance risk coefficient according to the temperature measurement maintenance state corresponding to the temperature measurement key point; determining a temperature measurement risk threshold corresponding to the monitoring position based on the minimum temperature measurement tolerance and the temperature measurement overhaul risk coefficient; and generating the temperature measurement risk threshold value table based on the monitoring position and the temperature measurement risk threshold value corresponding to the monitoring position.
Optionally, in a sixth implementation manner of the second aspect of the present invention, the sensing module includes: the acquisition unit is used for acquiring the environmental information of each monitoring position on the power transmission line through preset sensing equipment; and the generating unit is used for generating a disturbing signal based on the environmental information through the sensing equipment and applying the disturbing signal to an optical fiber in the power transmission line.
A third aspect of the present invention provides a computer apparatus comprising: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the computer device to perform the steps of the method for monitoring a power transmission line as described above.
A fourth aspect of the present invention provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the steps of the above-mentioned monitoring method of an electric transmission line.
In the technical scheme of the invention, the method specifically comprises the steps of obtaining and analyzing optical signals transmitted in optical fibers in the power transmission line, and determining the position of an abnormal line in the power transmission line based on vibration information, strain information and temperature information; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; in the above, by extracting the vibration information, the strain information and the temperature information from the optical signal, determining different risk thresholds of each monitoring position according to the characteristics of the power transmission line, determining corresponding risk values according to the vibration information, the strain information and the temperature information, and determining the abnormal line position in the power transmission line based on the risk thresholds and the risk values, the effectiveness of monitoring is improved, the acquisition equipment corresponding to the abnormal line position is self-checked, the monitoring information is generated based on the self-checking result and the line position, and the accuracy of monitoring is improved; therefore, the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of a monitoring method for a power transmission line in an embodiment of the invention;
fig. 2 is a schematic diagram of a second embodiment of the method for monitoring the power transmission line in the embodiment of the invention;
fig. 3 is a schematic diagram of a third embodiment of the monitoring method for the power transmission line in the embodiment of the invention;
fig. 4 is a schematic diagram of an embodiment of a monitoring system for a power transmission line according to an embodiment of the present invention;
fig. 5 is a schematic diagram of another embodiment of the monitoring system of the power transmission line in the embodiment of the invention;
FIG. 6 is a diagram of an embodiment of a computer device in an embodiment of the invention.
Detailed Description
The problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved. The application provides a monitoring method, a monitoring system, monitoring equipment and a storage medium for a power transmission line. The method comprises the steps of determining the position of a line with abnormality in the power transmission line based on vibration information, strain information and temperature information by acquiring and analyzing optical signals transmitted in optical fibers in the power transmission line; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; in the above, by extracting the vibration information, the strain information and the temperature information from the optical signal, determining different risk thresholds of each monitoring position according to the characteristics of the power transmission line, determining corresponding risk values according to the vibration information, the strain information and the temperature information, and determining the abnormal line position in the power transmission line based on the risk thresholds and the risk values, the effectiveness of monitoring is improved, the acquisition equipment corresponding to the abnormal line position is self-checked, the monitoring information is generated based on the self-checking result and the line position, and the accuracy of monitoring is improved; therefore, the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of understanding, a specific process of the embodiment of the present invention is described below, with reference to fig. 1, in a first embodiment of the method for monitoring the power transmission line in the embodiment of the present invention, the method is implemented by the following steps:
101. acquiring an optical signal transmitted in an optical fiber in a power transmission line;
in this step, the Optical Fiber mainly refers to an information channel for power grid communication, scheduling and protection, and includes an Optical Fiber in an OPGW (Optical Fiber Composite Overhead Ground Wire) Optical cable installed together with a power transmission line; an optical fiber in an All Dielectric Self-Supporting (ADSS) optical cable erected along with a high-voltage line; optical Fiber in OPLC (Optical Fiber Composite Low-voltage Cable), and the like.
In the step, the optical fiber receives a disturbance signal on the power transmission line through preset sensing equipment, wherein the disturbance signal comprises at least one of vibration, temperature and stress change information generated after environmental wind power, temperature and external vibration affect the power transmission line;
in this step, the power transmission line includes at least one of an overhead power transmission line and a cable line;
in this step, the overhead transmission line includes at least one of a line tower, a wire, a transformer, an insulator, a line fitting, a stay wire, a tower foundation, and a grounding device.
In practical application, before acquiring an optical signal transmitted in an optical fiber in a power transmission line, the method further includes:
collecting environmental information of each monitoring position on the power transmission line through preset sensing equipment;
and generating a disturbance signal based on the environmental information through the sensing equipment, and applying the disturbance signal to an optical fiber in the power transmission line, for example, directly modulating information to be transmitted by a communication terminal into vibration and sound waves, and modulating the laser in the optical fiber by the sensing equipment through the physical quantity in a mutual inductance mode, thereby realizing the modulation and transmission of the information.
102. Analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information;
in this step, the vibration information includes a monitoring position corresponding to the vibration.
In practical application, the monitoring position is determined by a signal acquisition position and a one-way distance, wherein the one-way distance is the distance between the position where the vibration occurs and the signal acquisition position;
calculating the distance from the position where the vibration occurs to the signal acquisition position by:
recording the time taken from transmission of the signal to return of the signal;
determining the speed and refractive index of light in glass material by the corresponding medium parameters of the optical fiber, wherein the refractive index is obtained from the optical fiber parameters marked by the optical fiber manufacturer, and in practical application, because the speed of light in glass is slower than that in vacuum, the measured optical fiber has to indicate the refractive Index (IOR) for accurately measuring the distance;
multiplying the time and the speed to obtain a total path of the optical signal;
the distance is at twice the index of refraction, resulting in the single pass distance.
103. Analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information;
for this step, it can be specifically realized by the following manner:
extracting brillouin scattering light from a waveform of the optical signal;
generating a frequency curve based on Brillouin frequency corresponding to the Brillouin scattering light, wherein the Brillouin frequency corresponding to the Brillouin scattering light signal is influenced by the component of a medium material in the optical fiber, and has a corresponding relation with the temperature and the pressure of the medium in the optical fiber under the premise of determining the component;
generating the Brillouin frequency shift curve and the Brillouin power curve based on the frequency curve;
and extracting strain information and temperature information from the Brillouin frequency shift curve and the Brillouin power curve.
In practical application, the process of extracting strain information and temperature information from the brillouin frequency shift curve and the brillouin power curve is based on the following principle:
the optical signal comprises reflected light and incident light, the frequency of the reflected light is slightly less than that of the incident light, and the frequency difference vB is equal to the frequency of the radiation phonon. This frequency difference is called brillouin frequency shift and is determined by a phase matching condition. In the presence of only back-facing brillouin scattering, the brillouin frequency shift can be calculated from the refractive index n, acoustic velocity va, and vacuum wavelength λ: ν β =2n ν a/λ (calculating the brillouin scattering in an optical fiber, it is necessary to adopt an effective refractive index), and back brillouin scattering mainly exists in the optical fiber. However, weak forward brillouin scattering is also generated due to the acoustic waveguide effect. The brillouin frequency is related to the medium material composition and to some extent depends on the temperature and pressure of the medium. This correlation is used in fiber optic sensors. Another important application of stimulated brillouin scattering is optical phase conjugation. For example, a phase conjugate mirror in a high power Q-switched laser can cancel out the thermal distortions generated in the laser crystal in the forward and backward directions.
In practical application, the process of extracting brillouin scattering light from the waveform of the optical signal includes:
the brillouin scattered light is separated from the backscattered light by means of a fabry-perot (F-P) interferometer or a mach-zehnder (M-Z) interferometer.
104. Determining the position of the abnormal line in the power transmission line based on the vibration information, the strain information and the temperature information;
for this step, it can be specifically realized by the following means:
analyzing the vibration information, the strain information and the temperature information to obtain vibration, strain and temperature corresponding to each monitoring position on the power transmission line;
inquiring a risk value coefficient corresponding to each monitoring position from a preset risk value coefficient table, wherein the risk value coefficient comprises risk value coefficients corresponding to the vibration, the strain and the temperature respectively;
determining a corresponding risk value based on the vibration, the strain and the temperature according to the risk value coefficient, for example: multiplying the vibration by a risk value coefficient corresponding to the vibration to obtain a risk value corresponding to the vibration; multiplying the strain by a risk value coefficient corresponding to the strain to obtain a risk value corresponding to the strain; multiplying the temperature by the risk value coefficient corresponding to the temperature to obtain a risk value corresponding to the temperature;
inquiring a risk threshold value corresponding to each monitoring position from a preset risk threshold value table;
and determining the position of the abnormal line in the power transmission line according to the risk threshold and the risk value, wherein the position of the abnormal line in the power transmission line is the corresponding monitoring position when the risk value is greater than the risk threshold.
Further, the risk threshold table includes a vibration risk threshold table, and before the risk threshold corresponding to each of the monitored locations is queried from a preset risk threshold table, the method further includes:
determining a monitoring subject and a position range according to the monitoring position, and reading corresponding weather data and corresponding map data from a preset environment data platform according to the position range, wherein the position range is a range of which the distance from the subject to the position is smaller than a preset distance threshold;
determining a weather type according to the weather data, and determining a first threshold reference value according to the weather type;
determining a region type according to the map data, and determining a second threshold reference value according to the region type;
determining a subject parameter corresponding to the monitoring subject according to the monitoring subject, and determining a third threshold reference value based on the subject parameter;
determining a vibration risk threshold corresponding to the monitoring position according to the first threshold reference value, the second threshold reference value and the third threshold reference value;
and generating the vibration risk threshold value table based on the monitoring position and the vibration risk threshold value corresponding to the monitoring position.
105. Inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table;
in the step, the collecting equipment is used for collecting optical signals in the optical fiber;
in practical applications, the collecting device includes at least one of an optical time-domain reflectometer (OTDR) and a brillouin optical time-domain reflectometer (btdr) -based distributed optical fiber sensing system.
106. Acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated by a modulation device corresponding to the acquisition equipment;
in this step, the self-checking modulation information is a test signal;
for this step, it can be specifically realized by the following means:
generating a test signal aiming at the corresponding line position through a modulation device corresponding to the acquisition equipment, and disturbing the corresponding line position based on the test signal;
acquiring self-checking state information of the corresponding line position through the acquisition equipment;
comparing the test signal with the self-checking state information to obtain a self-checking result, for example, determining a test state based on the test signal, determining a detection state based on the self-checking state information, and comparing the test state with the detection state; if the comparison result is the same, the self-checking result is normal; if the comparison result is not the same, the self-checking result is abnormal self-checking.
107. And generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode.
If the self-checking result is that the self-checking is normal, uploading the position of the line with the abnormality in the power transmission line to a preset optical sensing communication platform;
if the self-detection result is self-detection abnormity, uploading the self-detection result and the abnormal line position in the power transmission line to a preset optical sensing communication platform;
and generating a monitoring map based on the self-checking result and/or the abnormal line position in the power transmission line through the optical sensing communication platform, and displaying a monitoring information display interface preset in the optical sensing communication platform.
By implementing the method, the position of the abnormal line in the power transmission line is determined on the basis of the vibration information, the strain information and the temperature information by acquiring and analyzing the optical signal transmitted in the optical fiber in the power transmission line; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; in the above, by extracting the vibration information, the strain information and the temperature information from the optical signal, determining different risk thresholds of each monitoring position according to the characteristics of the power transmission line, determining the corresponding risk values according to the vibration information, the strain information and the temperature information, and determining the abnormal line position in the power transmission line based on the risk thresholds and the risk values, the effectiveness of monitoring is improved, the acquisition equipment corresponding to the abnormal line position is self-checked, and the monitoring information is generated based on the self-checking result and the line position, so that the monitoring accuracy is improved; therefore, the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved.
Referring to fig. 2, a second embodiment of the method for monitoring a power transmission line according to the embodiment of the present invention includes the following steps:
201. acquiring an optical signal transmitted in an optical fiber in a power transmission line;
in practical application, the optical fiber is placed in an optical cable corresponding to the power transmission line, wherein the optical cable is connected with a preset optical sensing communication base station.
202. Analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information;
203. analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information;
204. determining the position of the abnormal line in the power transmission line based on the vibration information, the strain information and the temperature information;
for this step, it can be specifically realized by the following means:
analyzing the vibration information, the strain information and the temperature information to obtain vibration, strain and temperature corresponding to each monitoring position on the power transmission line; inquiring a risk value coefficient corresponding to each monitoring position from a preset risk value coefficient table, and determining a corresponding risk value based on the vibration, the strain and the temperature according to the risk value coefficient; and querying a risk threshold corresponding to each monitoring position from a preset risk threshold table, and determining the position of the abnormal line in the power transmission line according to the risk threshold and the risk value, wherein the position of the abnormal line in the power transmission line is the corresponding monitoring position when the risk value is greater than the risk threshold.
Further, the risk threshold table includes a vibration risk threshold table, and before the risk threshold corresponding to each of the monitored locations is queried from a preset risk threshold table, the method further includes:
determining a monitoring subject and a position range according to the monitoring position, and reading corresponding weather data and corresponding map data from a preset environment data platform according to the position range, wherein the position range is a range of which the distance from the subject to the position is smaller than a preset distance threshold;
determining a weather type according to the weather data, and determining a first threshold reference value according to the weather type, for example, querying a first threshold reference value corresponding to the weather type from a preset first threshold reference value table;
determining a region type according to the map data, and determining a second threshold reference value according to the region type, for example, querying a second threshold reference value corresponding to the region type from a preset second threshold reference value table;
determining a subject parameter corresponding to the monitoring subject according to the monitoring subject, and determining a third threshold reference value based on the subject parameter, for example, querying a preset third threshold reference value table to obtain a third threshold reference value corresponding to the subject parameter;
determining a vibration risk threshold corresponding to the monitoring position according to the first threshold reference value, the second threshold reference value and the third threshold reference value, for example, selecting a minimum threshold from the first threshold reference value, the second threshold reference value and the third threshold reference value to obtain a vibration risk threshold corresponding to the monitoring position;
and generating the vibration risk threshold value table based on the monitoring position and the vibration risk threshold value corresponding to the monitoring position.
Further, the subject parameters include a subject type, a subject size, and a vibration overhaul state;
the main body type comprises at least one of a line tower, a wire, a transformer, an insulator, a line fitting, a stay wire, a tower foundation and a grounding device;
the main body size comprises at least one of sizes corresponding to a line tower, a wire, a transformer, an insulator, a line hardware fitting, a stay wire, a tower foundation and a grounding device respectively;
the vibration overhauling state comprises at least one of maintenance states corresponding to a line tower, a wire, a transformer, an insulator, a line hardware fitting, a stay wire, a tower foundation and a grounding device respectively;
the determining a third threshold reference value based on the subject parameter comprises:
determining a corresponding vibration sensitive point position and a vibration tolerance corresponding to the vibration sensitive point position from a preset equipment parameter table according to the type of the main body, wherein the vibration sensitive point position comprises a connection point between a line tower, a lead, a transformer, an insulator, a line fitting, a stay wire, a tower foundation and a grounding device;
determining a vibration tolerance coefficient corresponding to each vibration-sensitive point based on the main body size, for example, querying a vibration tolerance coefficient corresponding to each vibration-sensitive point from a preset vibration tolerance coefficient table;
adjusting the vibration tolerance based on the vibration tolerance coefficient, for example, multiplying the vibration tolerance corresponding to the vibration sensitive point by the vibration tolerance coefficient corresponding to each vibration sensitive point to realize adjustment of the vibration tolerance;
selecting a minimum vibration tolerance and a vibration key point, wherein the minimum vibration tolerance is the minimum vibration tolerance in the vibration tolerances corresponding to the vibration sensitive points, and the vibration key point is the vibration sensitive point corresponding to the minimum vibration tolerance;
generating a maintenance risk coefficient according to the vibration maintenance state corresponding to the vibration key point;
determining a third threshold reference value based on the minimum vibration tolerance and the service risk factor.
In practical application, the process of determining the vibration tolerance coefficient corresponding to each vibration-sensitive point based on the size of the main body may further be obtained by:
determining a corresponding vibration tolerance coefficient curve according to the main body type;
when the main body type is a line tower, the size of the main body is the height corresponding to the line tower;
extracting parameters corresponding to the line tower from the main body parameters, and generating a height-vibration tolerance coefficient function based on the parameters corresponding to the line tower;
a corresponding vibration tolerance coefficient is calculated based on the height and the height-vibration tolerance coefficient function.
205. Inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table;
206. acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated by a modulation device corresponding to the acquisition equipment;
for this step, it can be specifically realized by the following means:
generating self-checking modulation information aiming at the corresponding line position through a modulation device corresponding to the acquisition equipment, and disturbing the corresponding line position based on the self-checking modulation information;
acquiring self-checking state information of the corresponding line position through the acquisition equipment;
and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result.
207. And generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode.
In this step, the displaying is performed in a preset displaying manner, including:
and transmitting the monitoring information and the waveform of the corresponding optical signal to an optical sensing communication platform through a preset optical sensing communication base station, and displaying a display interface in the optical sensing communication platform.
By implementing the method, the abnormal line position in the power transmission line is determined based on the vibration information, the strain information and the temperature information by acquiring and analyzing the optical signal transmitted in the optical fiber in the power transmission line; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; in the above, by extracting the vibration information, the strain information and the temperature information from the optical signal, determining different risk thresholds of each monitoring position according to the characteristics of the power transmission line, determining corresponding risk values according to the vibration information, the strain information and the temperature information, and determining the abnormal line position in the power transmission line based on the risk thresholds and the risk values, specifically, generating a risk threshold table by determining the vibration risk thresholds of different monitoring bodies to perform more targeted monitoring, thereby improving the effectiveness of monitoring, performing self-inspection on the acquisition equipment corresponding to the abnormal line position, generating monitoring information based on the self-inspection result and the line position, and improving the accuracy of monitoring; therefore, the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved.
Referring to fig. 3, in a third embodiment of the method for monitoring a power transmission line according to the embodiment of the present invention, the method includes the following implementation steps:
301. acquiring an optical signal transmitted in an optical fiber in a power transmission line;
in practical application, a preset communication terminal is connected based on an optical fiber;
the information to be transmitted by the communication terminal is directly modulated into vibration and sound waves, and the physical quantity is modulated into laser in the optical fiber in a mutual inductance mode, so that the modulation and transmission of the information are realized.
By adopting the mode, the limitation caused by injecting laser light into the optical fiber in the traditional optical communication can be avoided, the difficulty of optical communication construction is greatly reduced without cutting, shunting and coupling the optical fiber, and meanwhile, each physical point of the whole optical cable can be used as an information loading point, so that distributed terminal access is realized.
The communication system based on the optical sensing technology is very suitable for data communication in the environments such as underground, underwater, field and the like, and can realize a distributed access and plug-and-play sensing communication network.
302. Analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information;
in practical applications, the waveform of the optical signal may be analyzed by a preset optical time-domain reflectometer (OTDR) module, so as to obtain corresponding vibration information.
303. Analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information;
in practical application, the waveform of an optical signal can be analyzed through a distributed optical fiber sensing system module based on Brillouin Optical Time Domain Reflectometer (BOTDR), so as to obtain corresponding strain information and temperature information.
304. Determining the position of the abnormal line in the power transmission line based on the vibration information, the strain information and the temperature information;
for this step, it can be specifically realized by the following means:
analyzing the vibration information, the strain information and the temperature information to obtain vibration, strain and temperature corresponding to each monitoring position on the power transmission line; inquiring a risk value coefficient corresponding to each monitoring position from a preset risk value coefficient table, and determining a corresponding risk value based on the vibration, the strain and the temperature according to the risk value coefficient; and querying a risk threshold corresponding to each monitoring position from a preset risk threshold table, and determining the position of the abnormal line in the power transmission line according to the risk threshold and the risk value, wherein the position of the abnormal line in the power transmission line is the corresponding monitoring position when the risk value is greater than the risk threshold.
Further, before querying a risk threshold corresponding to each monitored location from a preset risk threshold table, the risk threshold table further includes:
determining a strain monitoring main body according to the monitoring position, and determining strain main body parameters corresponding to the strain monitoring main body according to the strain monitoring main body;
extracting the type of a strain body, the size of the strain body and the strain overhaul state from the strain body parameters;
acquiring microclimate data corresponding to the monitoring position, and extracting the environmental temperature corresponding to the monitoring position from the microclimate data, wherein the microclimate data is acquired by a microclimate sensor preset at the monitoring position;
determining a corresponding strain sensitive point position and a strain tolerance corresponding to the strain sensitive point position from a preset equipment parameter table according to the type of the strain body;
determining a strain tolerance coefficient corresponding to each strain sensitive point based on the environment temperature and the size of the main body;
adjusting the strain tolerance based on the strain tolerance coefficient, and selecting a minimum strain tolerance and a strain key point, wherein the minimum strain tolerance is the minimum strain tolerance in the strain tolerances corresponding to the strain sensitive points, and the strain key point is the strain sensitive point corresponding to the minimum strain tolerance;
generating a strain maintenance risk coefficient according to the strain maintenance state corresponding to the strain key point;
determining a strain risk threshold corresponding to the monitoring position based on the minimum strain tolerance and the strain overhaul risk coefficient;
and generating the strain risk threshold value table based on the monitoring position and the strain risk threshold value corresponding to the monitoring position.
Further, the risk threshold table includes a temperature measurement risk threshold table, and before the risk threshold corresponding to each monitored location is queried from the preset risk threshold table, the method further includes:
determining a temperature measurement monitoring main body according to the monitoring position, and reading the temperature measurement main body type, the temperature measurement position, the main body operation condition and the temperature measurement overhaul state corresponding to the temperature measurement monitoring main body from a preset power transmission line data platform according to the temperature measurement monitoring main body;
determining a corresponding temperature measurement sensitive point position and a temperature measurement tolerance corresponding to the temperature measurement sensitive point position from a preset equipment parameter table according to the type of the temperature measurement main body;
determining temperature measurement tolerance coefficients corresponding to the temperature measurement sensitive points based on the main body operation condition and the temperature measurement positions;
adjusting the temperature measurement tolerance based on the temperature measurement tolerance coefficient, and selecting a minimum temperature measurement tolerance and a temperature measurement key point, wherein the minimum temperature measurement tolerance is the minimum temperature measurement tolerance in the temperature measurement tolerances corresponding to the temperature measurement sensitive points, and the temperature measurement key point is the temperature measurement sensitive point corresponding to the minimum temperature measurement tolerance;
generating a temperature measurement maintenance risk coefficient according to the temperature measurement maintenance state corresponding to the temperature measurement key point;
determining a temperature measurement risk threshold corresponding to the monitoring position based on the minimum temperature measurement tolerance and the temperature measurement overhaul risk coefficient
And generating the temperature measurement risk threshold value table based on the monitoring position and the temperature measurement risk threshold value corresponding to the monitoring position.
In practical application, the vibration information comprises a vibration signal;
in practical applications, this step can also be implemented as follows:
determining a type of vibration based on the vibration signal;
judging whether the power transmission line is abnormal or not according to the vibration type, for example, if the vibration type is the abnormal vibration type, the power transmission line is abnormal; if the vibration type is not an abnormal vibration type, the power transmission line is not abnormal;
and if so, extracting the position of the abnormal line in the power transmission line.
Specifically, the process of determining the vibration type based on the vibration signal includes:
analyzing the vibration signal to obtain the time and the specific position corresponding to the vibration signal;
determining a time period according to the vibration time characteristics, and determining a change track of a specific position in the time period based on the vibration position characteristics;
determining an external intrusion risk value according to the time period and the change track;
determining a vibration type according to the external intrusion risk value, and judging whether the vibration type belongs to an abnormal vibration type;
if yes, judging that the power transmission line is abnormal;
if not, judging that the power transmission line is not abnormal.
305. Inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table;
306. acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated by a modulation device corresponding to the acquisition equipment;
for this step, it can be specifically realized by the following means:
generating self-checking modulation information aiming at the corresponding line position through a modulation device corresponding to the acquisition equipment, and disturbing the corresponding line position based on the self-checking modulation information; acquiring self-checking state information of the corresponding line position through the acquisition equipment; and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result.
307. And generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode.
Generating monitoring information based on the line position, the self-checking result and the waveform of the corresponding optical signal;
determining a corresponding detection base station based on the line position;
and transmitting the monitoring information to a corresponding monitoring base station through a preset optical sensing communication platform.
By implementing the method, the abnormal line position in the power transmission line is determined based on the vibration information, the strain information and the temperature information by acquiring and analyzing the optical signal transmitted in the optical fiber in the power transmission line; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; in the above, by extracting the vibration information, the strain information and the temperature information from the optical signal, determining different risk thresholds of each monitoring position according to the characteristics of the power transmission line, determining corresponding risk values according to the vibration information, the strain information and the temperature information, and determining the abnormal line position in the power transmission line based on the risk thresholds and the risk values, specifically, by determining the stress risk thresholds and the temperature measurement risk thresholds of different monitoring bodies, generating a risk threshold table for more targeted monitoring, thereby improving the effectiveness of monitoring, performing self-inspection on the acquisition equipment corresponding to the abnormal line position, and generating the monitoring information based on the self-inspection result and the line position, thereby improving the accuracy of monitoring; thereby the problem that can't carry out effective monitoring to transmission line based on light sensing among the prior art has been solved.
With reference to fig. 4, an embodiment of a monitoring system for a power transmission line in an embodiment of the present invention includes:
the sensing module 401 is configured to collect environmental information of each monitoring location on the power transmission line, generate a disturbance signal based on the environmental information, and apply the disturbance signal to an optical fiber in the power transmission line; acquiring an optical signal transmitted in an optical fiber in a power transmission line; analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information; analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information;
a monitoring module 402, configured to determine a line position where an abnormality exists in the power transmission line based on the vibration information, the strain information, and the temperature information;
the system self-checking module 403 is configured to query, from a preset self-checking device start table, an acquisition device corresponding to the line position; controlling the acquisition equipment to acquire self-checking modulation information and self-checking state information of the power transmission line at the line position, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated by a modulation device corresponding to the acquisition equipment; detecting the acquisition equipment to obtain a self-detection result;
and the display module 404 is configured to generate monitoring information based on the line position and the self-checking result, and display the monitoring information in a preset display mode.
By implementing the system, the abnormal line position in the power transmission line is determined based on the vibration information, the strain information and the temperature information by acquiring and analyzing the optical signal transmitted in the optical fiber in the power transmission line; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; in the above, by extracting the vibration information, the strain information and the temperature information from the optical signal, determining different risk thresholds of each monitoring position according to the characteristics of the power transmission line, determining corresponding risk values according to the vibration information, the strain information and the temperature information, and determining the abnormal line position in the power transmission line based on the risk thresholds and the risk values, the effectiveness of monitoring is improved, the acquisition equipment corresponding to the abnormal line position is self-checked, the monitoring information is generated based on the self-checking result and the line position, and the accuracy of monitoring is improved; therefore, the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved.
Referring to fig. 5, another embodiment of the monitoring system for power transmission lines in the embodiment of the present invention includes:
the sensing module 401 is configured to collect environmental information of each monitoring location on the power transmission line, generate a disturbance signal based on the environmental information, and apply the disturbance signal to an optical fiber in the power transmission line; acquiring an optical signal transmitted in an optical fiber in a power transmission line; analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information; analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information;
a first generating module 405, configured to determine a monitoring subject and a position range according to the monitoring position, and read corresponding weather data and corresponding map data from a preset environment data platform according to the position range, where the position range is a range where a distance from the monitoring subject to the position is smaller than a preset distance threshold; determining a weather type according to the weather data, and determining a first threshold reference value according to the weather type; determining a region type according to the map data, and determining a second threshold reference value according to the region type; determining a subject parameter corresponding to the monitoring subject according to the monitoring subject, and determining a third threshold reference value based on the subject parameter; determining a vibration risk threshold corresponding to the monitoring position according to the first threshold reference value, the second threshold reference value and the third threshold reference value; generating a vibration risk threshold value table based on the monitoring position and a vibration risk threshold value corresponding to the monitoring position;
the first generating module 405 is further configured to determine, according to the subject type, a corresponding vibration-sensitive point location and a vibration tolerance corresponding to the vibration-sensitive point location from a preset device parameter table; determining a vibration tolerance coefficient corresponding to each vibration sensitive point based on the size of the main body; adjusting the vibration tolerance based on the vibration tolerance coefficient, and selecting a minimum vibration tolerance and a vibration key point, wherein the minimum vibration tolerance is the minimum vibration tolerance in the vibration tolerances corresponding to the vibration sensitive points, and the vibration key point is the vibration sensitive point corresponding to the minimum vibration tolerance; generating a maintenance risk coefficient according to the vibration maintenance state corresponding to the vibration key point; determining a third threshold reference value based on the minimum vibration tolerance and the service risk factor;
the second generating module 406 is configured to determine a strain monitoring subject according to the monitoring position, and determine a strain subject parameter corresponding to the strain monitoring subject according to the strain monitoring subject; extracting the type of a strain body, the size of the strain body and the strain overhaul state from the strain body parameters; acquiring microclimate data corresponding to the monitoring position, and extracting the environmental temperature corresponding to the monitoring position from the microclimate data, wherein the microclimate data is acquired by a microclimate sensor preset at the monitoring position; determining a corresponding strain sensitive point position and a strain tolerance corresponding to the strain sensitive point position from a preset equipment parameter table according to the type of the strain body; determining a strain tolerance coefficient corresponding to each strain sensitive point based on the environment temperature and the size of the main body; adjusting the strain tolerance based on the strain tolerance coefficient, and selecting a minimum strain tolerance and a strain key point, wherein the minimum strain tolerance is the minimum strain tolerance in the strain tolerances corresponding to the strain sensitive points, and the strain key point is the strain sensitive point corresponding to the minimum strain tolerance; generating a strain maintenance risk coefficient according to the strain maintenance state corresponding to the strain key point; determining a strain risk threshold corresponding to the monitoring position based on the minimum strain tolerance and the strain overhaul risk coefficient; generating the strain risk threshold value table based on the monitoring position and a strain risk threshold value corresponding to the monitoring position;
a third generating module 407, configured to determine a temperature measurement monitoring subject according to the monitoring position, and read a temperature measurement subject type, a temperature measurement position, a subject operation condition, and a temperature measurement overhaul state corresponding to the temperature measurement monitoring subject from a preset power transmission line data platform according to the temperature measurement monitoring subject; determining a corresponding temperature measurement sensitive point position and a temperature measurement tolerance corresponding to the temperature measurement sensitive point position from a preset equipment parameter table according to the type of the temperature measurement main body; determining temperature measurement tolerance coefficients corresponding to the temperature measurement sensitive points based on the main body operation condition and the temperature measurement positions; adjusting the temperature measurement tolerance based on the temperature measurement tolerance coefficient, and selecting a minimum temperature measurement tolerance and a temperature measurement key point, wherein the minimum temperature measurement tolerance is the minimum temperature measurement tolerance in the temperature measurement tolerances corresponding to the temperature measurement sensitive points, and the temperature measurement key point is the temperature measurement sensitive point corresponding to the minimum temperature measurement tolerance; generating a temperature measurement maintenance risk coefficient according to the temperature measurement maintenance state corresponding to the temperature measurement key point; determining a temperature measurement risk threshold value corresponding to the monitoring position based on the minimum temperature measurement tolerance and the temperature measurement overhaul risk coefficient; generating a temperature measurement risk threshold value table based on the monitoring position and a temperature measurement risk threshold value corresponding to the monitoring position;
a monitoring module 402, configured to determine a line position where an abnormality exists in the power transmission line based on the vibration information, the strain information, and the temperature information;
the system self-checking module 403 is configured to query, from a preset self-checking device start table, an acquisition device corresponding to the line position; controlling the acquisition equipment to acquire self-checking modulation information and self-checking state information of the power transmission line at the line position, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated by a modulation device corresponding to the acquisition equipment; detecting the acquisition equipment to obtain a self-detection result;
and the display module 404 is configured to generate monitoring information based on the line position and the self-checking result, and display the monitoring information in a preset display mode.
In this embodiment, the sensing module 401 includes:
the acquisition unit 4011 is configured to acquire environmental information of each monitoring location on the power transmission line through preset sensing equipment;
and the generating unit 4012 is configured to generate, through the sensing device, a disturbance signal based on the environmental information, and apply the disturbance signal to an optical fiber in the power transmission line.
In this embodiment, the monitoring module 402 includes:
the analyzing unit 4021 is configured to analyze the vibration information, the strain information, and the temperature information to obtain vibration, strain, and temperature corresponding to each monitoring location on the power transmission line;
a first query unit 4022, configured to query a risk value coefficient corresponding to each monitoring location from a preset risk value coefficient table, and determine a corresponding risk value based on the vibration, the strain, and the temperature according to the risk value coefficient;
the second query unit 4023 is configured to query a risk threshold corresponding to each monitoring location from a preset risk threshold table, and determine a line location where an abnormality exists in the power transmission line according to the risk threshold and the risk value, where the line location where the abnormality exists in the power transmission line is the corresponding monitoring location where the risk value is greater than the risk threshold.
By implementing the system, the abnormal line position in the power transmission line is determined based on the vibration information, the strain information and the temperature information by acquiring and analyzing the optical signal transmitted in the optical fiber in the power transmission line; inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result; generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode; in the above, by extracting the vibration information, the strain information and the temperature information from the optical signal, determining different risk thresholds of each monitoring position according to the characteristics of the power transmission line, determining the corresponding risk values according to the vibration information, the strain information and the temperature information, and determining the abnormal line position in the power transmission line based on the risk thresholds and the risk values, the effectiveness of monitoring is improved, the acquisition equipment corresponding to the abnormal line position is self-checked, and the monitoring information is generated based on the self-checking result and the line position, so that the monitoring accuracy is improved; therefore, the problem that the power transmission line cannot be effectively monitored based on optical sensing in the prior art is solved.
Referring to fig. 6, an embodiment of a computer device in an embodiment of the present invention is described in detail below from a hardware processing perspective.
Fig. 6 is a schematic structural diagram of a computer device 600 according to an embodiment of the present invention, which may have a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 610 (e.g., one or more processors) and a memory 620, and one or more storage media 630 (e.g., one or more mass storage devices) for storing applications 633 or data 632. Memory 620 and storage medium 630 may be, among other things, transient or persistent storage. The program stored in the storage medium 630 may include one or more modules (not shown), each of which may include a sequence of instructions for operating on the computer device 600. Further, the processor 610 may be configured to communicate with the storage medium 630 to execute a series of instruction operations in the storage medium 630 on the computer device 600.
The computer device 600 may also include one or more power supplies 640, one or more wired or wireless network interfaces 650, one or more input-output interfaces 660, and/or one or more operating systems 631, such as Windows Server, mac OS X, unix, linux, freeBSD, and so forth. Those skilled in the art will appreciate that the computer device configuration illustrated in FIG. 6 is not intended to be limiting of the computer devices provided herein and may include more or fewer components than those illustrated, or some components may be combined, or a different arrangement of components.
The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium, and may also be a volatile computer-readable storage medium, where instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to perform the steps of the above-mentioned method for monitoring an electric transmission line.
In practical applications, the above-provided method can be implemented based on Artificial Intelligence (AI) which is a theory, method, technique and application system that simulates, extends and expands human Intelligence, senses the environment, acquires knowledge and uses the knowledge to obtain the best results using a digital computer or a machine controlled by a digital computer. The cloud server may be implemented based on a server, and the server may be an independent server, or may be a cloud server that provides basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a web service, cloud communication, middleware service, a domain name service, a security service, a Content Delivery Network (CDN), a big data and artificial intelligence platform, and the like.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A monitoring method of a power transmission line is characterized by comprising the following steps:
acquiring an optical signal transmitted in an optical fiber in a power transmission line;
analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information;
analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information;
determining the position of the abnormal line in the power transmission line based on the vibration information, the strain information and the temperature information;
inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table;
acquiring self-checking modulation information and self-checking state information of the power transmission line on the line position based on the acquisition equipment, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated through a modulation device corresponding to the acquisition equipment;
and generating monitoring information based on the line position and the self-checking result, and displaying the monitoring information in a preset display mode.
2. The method for monitoring the power transmission line according to claim 1, wherein the determining the line position where the abnormality exists in the power transmission line based on the vibration information, the strain information, and the temperature information includes:
analyzing the vibration information, the strain information and the temperature information to obtain vibration, strain and temperature corresponding to each monitoring position on the power transmission line;
inquiring a risk value coefficient corresponding to each monitoring position from a preset risk value coefficient table, and determining a corresponding risk value based on the vibration, the strain and the temperature according to the risk value coefficient;
and querying a risk threshold corresponding to each monitoring position from a preset risk threshold table, and determining the position of the abnormal line in the power transmission line according to the risk threshold and the risk value, wherein the position of the abnormal line in the power transmission line is the corresponding monitoring position when the risk value is greater than the risk threshold.
3. The method according to claim 2, wherein the risk threshold table comprises a vibration risk threshold table, and before the risk threshold corresponding to each monitored location is queried from a preset risk threshold table, the method further comprises:
determining a monitoring subject and a position range according to the monitoring position, and reading corresponding weather data and corresponding map data from a preset environment data platform according to the position range, wherein the position range is a range of which the distance from the subject to the position is smaller than a preset distance threshold;
determining a weather type according to the weather data, and determining a first threshold reference value according to the weather type;
determining a region type according to the map data, and determining a second threshold reference value according to the region type;
determining a subject parameter corresponding to the monitoring subject according to the monitoring subject, and determining a third threshold reference value based on the subject parameter;
determining a vibration risk threshold corresponding to the monitoring position according to the first threshold reference value, the second threshold reference value and the third threshold reference value;
and generating the vibration risk threshold value table based on the monitoring position and the vibration risk threshold value corresponding to the monitoring position.
4. The method of claim 3, wherein the subject parameters include subject type, subject size and vibration overhaul condition;
the determining a third threshold reference value based on the subject parameter comprises:
determining a corresponding vibration sensitive point position and a vibration tolerance corresponding to the vibration sensitive point position from a preset equipment parameter table according to the main body type;
determining a vibration tolerance coefficient corresponding to each vibration sensitive point based on the size of the main body;
adjusting the vibration tolerance based on the vibration tolerance coefficient, and selecting a minimum vibration tolerance and a vibration key point, wherein the minimum vibration tolerance is the minimum vibration tolerance in the vibration tolerances corresponding to the vibration sensitive points, and the vibration key point is the vibration sensitive point corresponding to the minimum vibration tolerance;
generating a maintenance risk coefficient according to the vibration maintenance state corresponding to the vibration key point;
determining a third threshold reference value based on the minimum vibration tolerance and the service risk factor.
5. The method for monitoring the power transmission line according to claim 2, wherein the risk threshold table further includes a strain risk threshold table, and before the risk threshold corresponding to each of the monitoring locations is queried from a preset risk threshold table, the method further includes:
determining a strain monitoring main body according to the monitoring position, and determining strain main body parameters corresponding to the strain monitoring main body according to the strain monitoring main body;
extracting the type of a strain body, the size of the strain body and the strain overhaul state from the strain body parameters;
acquiring microclimate data corresponding to the monitoring position, and extracting the environmental temperature corresponding to the monitoring position from the microclimate data, wherein the microclimate data is acquired by a microclimate sensor preset at the monitoring position;
determining a corresponding strain sensitive point position and a strain tolerance corresponding to the strain sensitive point position from a preset equipment parameter table according to the type of the strain body;
determining a strain tolerance coefficient corresponding to each strain sensitive point based on the environment temperature and the size of the main body;
adjusting the strain tolerance based on the strain tolerance coefficient, and selecting a minimum strain tolerance and a strain key point, wherein the minimum strain tolerance is the minimum strain tolerance in the strain tolerances corresponding to the strain sensitive points, and the strain key point is the strain sensitive point corresponding to the minimum strain tolerance;
generating a strain maintenance risk coefficient according to the strain maintenance state corresponding to the strain key point;
determining a strain risk threshold corresponding to the monitoring position based on the minimum strain tolerance and the strain overhaul risk coefficient;
and generating the strain risk threshold value table based on the monitoring position and the strain risk threshold value corresponding to the monitoring position.
6. The method for monitoring the power transmission line according to claim 2, wherein the risk threshold tables further include a temperature measurement risk threshold table, and before the risk threshold corresponding to each monitored location is queried from a preset risk threshold table, the method further includes:
determining a temperature measurement monitoring main body according to the monitoring position, and reading the temperature measurement main body type, the temperature measurement position, the main body operation condition and the temperature measurement overhaul state corresponding to the temperature measurement monitoring main body from a preset power transmission line data platform according to the temperature measurement monitoring main body;
determining a corresponding temperature measurement sensitive point position and a temperature measurement tolerance corresponding to the temperature measurement sensitive point position from a preset equipment parameter table according to the type of the temperature measurement main body;
determining temperature measurement tolerance coefficients corresponding to the temperature measurement sensitive points based on the main body operation condition and the temperature measurement positions;
adjusting the temperature measurement tolerance based on the temperature measurement tolerance coefficient, and selecting a minimum temperature measurement tolerance and a temperature measurement key point, wherein the minimum temperature measurement tolerance is the minimum temperature measurement tolerance in the temperature measurement tolerances corresponding to the temperature measurement sensitive points, and the temperature measurement key point is the temperature measurement sensitive point corresponding to the minimum temperature measurement tolerance;
generating a temperature measurement maintenance risk coefficient according to the temperature measurement maintenance state corresponding to the temperature measurement key point;
determining a temperature measurement risk threshold corresponding to the monitoring position based on the minimum temperature measurement tolerance and the temperature measurement overhaul risk coefficient;
and generating the temperature measurement risk threshold value table based on the monitoring position and the temperature measurement risk threshold value corresponding to the monitoring position.
7. The method for monitoring the power transmission line according to any one of claims 1 to 6, wherein before the acquiring the optical signal transmitted in the optical fiber in the power transmission line, the method further comprises:
collecting environmental information of each monitoring position on the power transmission line through preset sensing equipment;
and generating a disturbance signal based on the environmental information through the sensing equipment, and acting the disturbance signal on an optical fiber in the power transmission line.
8. The utility model provides a monitoring system of transmission line which characterized in that, transmission line's monitoring system includes:
the sensing module is used for acquiring environmental information of each monitoring position on the power transmission line, generating a disturbance signal based on the environmental information and acting the disturbance signal on an optical fiber in the power transmission line; acquiring an optical signal transmitted in an optical fiber in a power transmission line; analyzing the waveform of the optical signal by using an optical time domain reflection principle to obtain corresponding vibration information; analyzing the waveform of the optical signal by utilizing a Brillouin optical time domain reflection principle to obtain corresponding strain information and temperature information;
the monitoring module is used for determining the position of a line with abnormality in the power transmission line based on the vibration information, the strain information and the temperature information;
the system self-checking module is used for inquiring acquisition equipment corresponding to the line position from a preset self-checking equipment starting table; controlling the acquisition equipment to acquire self-checking modulation information and self-checking state information of the power transmission line at the line position, and comparing the self-checking modulation information with the self-checking state information to obtain a self-checking result, wherein the self-checking modulation information is generated by a modulation device corresponding to the acquisition equipment; detecting the acquisition equipment to obtain a self-detection result;
and the display module is used for generating monitoring information based on the line position and the self-checking result and displaying the monitoring information in a preset display mode.
9. A computer device, comprising: a memory having instructions stored therein and at least one processor, the memory and the at least one processor interconnected by a line;
the at least one processor invokes the instructions in the memory to cause the computer device to perform the steps of the method of monitoring of an electric transmission line according to any of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for monitoring a power transmission line according to any one of claims 1 to 7.
CN202211308994.4A 2022-10-25 2022-10-25 Monitoring method, system, equipment and storage medium of power transmission line Active CN115372749B (en)

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