CN111856155A - Cable information positioning and information acquisition method in cable channel - Google Patents
Cable information positioning and information acquisition method in cable channel Download PDFInfo
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- 239000003550 marker Substances 0.000 claims abstract description 28
- 238000009933 burial Methods 0.000 claims description 12
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- 238000009434 installation Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000000819 phase cycle Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
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- 210000001503 joint Anatomy 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 11
- 238000007689 inspection Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
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- 239000004020 conductor Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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- 238000010276 construction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/085—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning for detecting presence or location of electric lines or cables
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
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Abstract
The invention discloses a cable information positioning and information acquisition method in a cable channel, which comprises the following steps: step 1, checking a target cable; step 2, detecting a target cable; step 3, distinguishing the cables in the same ditch respectively, and marking the cables through an electronic information marker; step 4, collecting and storing various basic information and logic information of the cable; step 5, positioning the electronic information marker by using a detector when the cable is positioned, and finally positioning the cable; the method solves the technical problems that in the prior art, the cable in the cable channel is mainly searched or positioned through a map, the existing accuracy is very low, no excavation is easy to occur, and the accuracy and the real-time performance of searching for the fault or positioning the fault are seriously influenced.
Description
Technical Field
The invention belongs to the underground cable monitoring technology, and particularly relates to a cable information positioning and information acquisition method in a cable channel.
Background
The cable information in the cable channel needs to be known in advance during maintenance or excavation, a map is generally adopted in the prior art for identification, but due to the fact that the society is different day by day, a plurality of ground object marks on the cable channel site are easy to change, when the cable or fault location is searched by simply depending on the map, the accuracy is very low, excavation is easy to occur, and the accuracy and the real-time performance of searching for the fault or fault location are seriously influenced.
Disclosure of Invention
The problems to be solved by the invention are as follows: the method for positioning and acquiring the cable information in the cable channel is provided to solve the technical problems that the accuracy is very low, no excavation is easy to occur, the accuracy and the real-time performance of fault searching or fault positioning are seriously influenced and the like when the cable information in the channel is acquired mainly through a map in the prior art when the cable or fault positioning is searched.
The technical scheme of the invention is as follows:
a cable information positioning and information acquisition method in a cable channel comprises the following steps:
step 1, checking a target cable;
step 2, detecting a target cable;
step 3, distinguishing the cables in the same ditch respectively, and marking the cables through an electronic information marker;
step 4, collecting and storing various basic information and logic information of the cable;
and 5, positioning the electronic information marker by using a detector when the cable is positioned, and finally positioning the cable.
The object of the step 1 for firstly checking the target cable is as follows: the power cable, the channel and related equipment for realizing electrical connection through the cable comprise a cable body, accessories, a switching station, a ring main unit, an opening and closing station, a distribution room, a distribution box, a grounding device, a grounding box, a cable support, a terminal station and a cable channel; the cable channel refers to a pipeline building and a structure body for cable protection, and comprises a direct burial, a drainage pipe, a cable trench, a working well, a joint working well, a tunnel and a bridge.
The method for detecting the target cable comprises the following steps: the cable is detected by an electromagnetic method, after a signal current I which is directly connected or inducts a certain frequency is applied to the cable to be detected by a transmitter, the current flows in the cable to be detected and generates an electromagnetic field in the surrounding space, and the intensity H is determined by the following formula:
H=K·（I/R）
in the formula, K is a field intensity coefficient, I is current intensity, R is the distance between any point around the cable and a current center, and the receiver is used for measuring the intensity and distribution of the electromagnetic field on the ground to determine the position and the burial depth of the cable to be measured, so that the cable to be measured is positioned.
The method for distinguishing the cables in the same channel respectively in the step 3 comprises the following steps: the transmitter of the pipeline identification detection equipment transmits signals through the coupling coil, the signals are coupled to the cable metal sheath, the signals are distributed along the pipeline to generate an alternating electromagnetic field, and a detector is used by detection personnel on the ground to track the signals, so that the path, the trend, the phase or different loop names of the pipeline are detected and identified.
Step 4, collecting and storing various basic information and logic information of the cable, wherein the basic information comprises cable name attributes, phases, states, plane positions, burial depth or height, trends, voltage levels, grounding types, starting points, inflection points, stop points, name attributes of collecting channels, plane positions, communication relations, top burial depth or height, trends, sizes and types, pipe hole and support positions, parameter firewalls and name attributes, positions and types of working wells; the logical information includes: electrical connection relation, starting point and end point intervals, work well adjacent relation, pipeline connection relation, cable perforation logic, available protective pipes and installation phase sequence; and the basic information and the logic information are collected through a mobile terminal installation APP and are sent to an upper computer system for storage in real time.
The method for identifying the cable through the electronic information identifier comprises the following steps: and installing and burying an electronic marker in the cable channel, and storing the related information of the cable in the chip to be cured on site.
And 5, positioning the electronic information marker by using the detector, and finally positioning the cable, wherein the method comprises the following steps: the method comprises the steps of firstly realizing rough positioning according to longitude and latitude of a GPS, then opening a detector to emit electromagnetic waves, feeding back a signal by an electronic identifier buried underground, realizing intelligent accurate positioning by the detector according to the strength of the fed-back signal, and directly reading basic information of a channel and detailed information laid by a feeder line stored on the electronic identifier.
The electronic information identifier is a passive electronic information identifier, is arranged above the cable in the channel and is at least 10cm away from the cable; the detector is in wireless connection with the passive electronic information identifier.
The passive electronic information marker is in ceramic package and is fixedly installed in a inhaul cable buckling mode; the passive electronic information identifier is arranged on a middle joint, a terminal and a branch box of the cable in the channel.
The passive electronic information marker is arranged in the shaft wall concrete in the channel; the passive electronic information identifier is arranged on a top pipe orifice or a buried pipe orifice in the channel; the passive electronic information identifier is arranged at the turning starting point, the turning end point and the turning radius vertex of the cable in the channel; the installation distance of the passive electronic information identifier is not more than 30 meters; arranging an electronic information identifier every 6 meters on the path of the cable at the pipe jacking section; and arranging an electronic information identifier every 15 meters on the cable path of the buried pipe section.
The invention has the beneficial effects that:
the passive electronic information marker is installed and embedded in a cable channel, the cable information is stored in a chip of the passive electronic information marker during embedding, the passive electronic information marker is solidified on the site, and the information of underground cables and channels is acquired in a non-excavation mode through a detector during inspection; when the system is used for routing inspection or cable searching and fault positioning, the attribute information of a cable channel and a cable accessory can be directly acquired in a non-excavation mode; the method has the advantages of convenience, rapidness and the like, and solves the technical problems that in the prior art, the cable in the cable channel is mainly searched or positioned through a map, the existing accuracy is very low, no excavation is easy to occur, and the accuracy and the real-time performance of searching for the fault or positioning the fault are seriously influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of an electromagnetic probe cable according to an embodiment of the present invention.
Detailed Description
A cable information positioning and information acquisition method in a cable channel comprises the following steps:
step 1, checking a target cable;
the object of the step 1 for firstly checking the target cable is as follows: the power cable, the channel and related equipment for realizing electrical connection through the cable comprise a cable body, accessories, a switching station, a ring main unit, an opening and closing station, a distribution room, a distribution box, a grounding device, a grounding box, a cable support, a terminal station and a cable channel; the cable channel refers to a pipeline building and a structure body for cable protection, and comprises a direct burial, a drainage pipe, a cable trench, a working well, a joint working well, a tunnel and a bridge.
It also includes government investment to build utility corridors for cable protection and to hand over the administration of the power supply bureau.
Before the digital cable and channel inspection operation is carried out, the definition and naming rules of cable pipelines and accessory equipment need to be determined, the definition method and naming rules need to accord with the management rules of the southern power grid, the southern power grid management rules are not determined, the national power pipeline management related regulations are referred, and the use habits of property departments and operation and maintenance units are combined.
Step 2, detecting a target cable;
the basic principle of the electromagnetic method is as follows: when a conductive geologic body exists underground, eddy currents (induced currents) are generated in the conductor under the action of an alternating electromagnetic field (primary field), and the eddy currents generate a secondary magnetic field (secondary field) around the eddy currents. The presence of the secondary field distorts the primary field. In general, the total field of the primary and secondary field addition differs from the primary field in strength, phase and direction. By studying the intensity of the secondary field and decay with time or by studying the intensity, spatial distribution and temporal characteristics of the components of the total field, anomalies can be found and the presence of underground electrical conductors inferred. If the geologic body has high magnetic permeability, under the action of the primary field, the geologic body is magnetized artificially to generate a secondary magnetic field, so that the abnormality can be found and the existence of the magnetizer in the underground environment can be inferred.
The invention adopts an electromagnetic method and has the characteristics of high detection precision, simple and convenient operation, strong anti-interference capability, wide application range, low cost, high efficiency and the like
The electromagnetic method is mainly used for detecting the cable by utilizing the electromagnetic induction principle. When a signal current I of a certain frequency is applied (directly connected or induced) to the cable to be tested by using a special transmitter, the current flows in the cable to be tested and generates an electromagnetic field in the surrounding space, and the intensity H of the electromagnetic field can be determined by the following formula:
H=K·（I/R）
in the formula, K is a field intensity coefficient, I is a current intensity, R is a distance from any point around the cable to a current center, as shown in fig. 2, in the figure, P is any point around the cable, I is a current intensity, R is a distance from the point P to the current center, H is an electric field intensity of the point P, Hx is a horizontal component of the field intensity, and Hz is a vertical component of the field intensity. The receiver is used for measuring the intensity and the distribution of the electromagnetic field on the ground to determine the position and the burial depth of the tested cable, so that the tested cable is positioned.
Step 3, distinguishing the cables in the same ditch respectively, and marking the cables through an electronic information marker;
the method for distinguishing the cables in the same channel respectively in the step 3 comprises the following steps: the transmitter of the pipeline identification detection equipment transmits signals through the coupling coil, the signals are coupled to the cable metal sheath, the signals are distributed along the pipeline to generate an alternating electromagnetic field, and a detector is used by detection personnel on the ground to track the signals, so that the path, the trend, the phase or different loop names of the pipeline are detected and identified.
After the cable detection and the line pair identification are finished, cables in the same ditch are distinguished, and coding management is carried out by adopting an electronic tag; because the conditions in the cable tunnel are severe, the space resources are limited, and an interference electromagnetic field is generated in the running process of the cable, the following factors need to be considered when the electronic tag is selected:
1. the anti-magnetic interference ability is strong enough, ensures that the label can penetrate through the cable body magnetic field for normal reading and writing.
2. The tunnel is moist, and has the advantages of water resistance, moisture resistance, acid and alkali resistance and good heat resistance.
3. And no external power supply is supplied inside the tunnel, and a low-power-consumption passive electronic tag is needed for type selection.
4. The cable bodies need to be distinguished, the reading and writing distance of the tags is required to be about 10cm, adjacent tags are prevented from being read by mistake, and the phase sequence and the loop name of the cables on the same support cannot be effectively distinguished.
5. The space between the cables in the cable tunnel is limited, and a small-size electronic tag is preferably adopted.
6. The cable is fixed on the bracket and cannot be moved, and the label is convenient and firm to mount.
According to the working condition requirements, the electronic tag packaged by the ceramic has the characteristics of magnetic field interference resistance, water resistance, moisture resistance, low power consumption and the like, is installed in a inhaul cable buckling mode by combining with the installation accessories, and is convenient and firm.
Step 4, collecting and storing various basic information and logic information of the cable;
step 4, collecting and storing various basic information and logic information of the cable, wherein the basic information comprises cable name attributes, phases, states, plane positions, burial depth or height, trends, voltage levels, grounding types, starting points, inflection points, stop points, name attributes of collecting channels, plane positions, communication relations, top burial depth or height, trends, sizes and types, pipe hole and support positions, parameter firewalls and name attributes, positions and types of working wells; the logical information includes: electrical connection relation, starting point and end point intervals, work well adjacent relation, pipeline connection relation, cable perforation logic, available protective pipes and installation phase sequence; and the basic information and the logic information are collected through a mobile terminal installation APP and are sent to an upper computer system for storage in real time.
In view of the relative lag of a generally adopted map, a plurality of ground object marks on the site are changed, in order to improve the site resilience and use value of data, a passive electronic marker is installed and embedded in a cable channel aiming at part of important areas (related to excavation construction, crossing and non-excavation dragging pipe areas), key information is stored in a chip and solidified on the site, and the information of underground cables and channels is acquired in a non-excavation mode.
The invention selects the low-frequency and sealed underground electronic information marker, is installed and solidified at the depth of about 1.5 meters underground, and can directly acquire the attribute information of the cable channel and the cable accessory in a non-excavation mode when routing inspection or cable searching and fault positioning are carried out.
The main technical indexes of the passive electronic marker selected by the invention are as follows:
with globally unique code
And can store a certain amount of information, can be encrypted, and has safe and reliable reading and writing
Can adapt to the severe environment and be stably used for a long time
The penetration capability is strong, and the soil and the concrete can be penetrated for reading;
the effective detection depth is 1.5 m, the change of the pavement environment is ensured, and the work well can still be detected after being covered;
the horizontal suspension design ensures that the marker can be accurately positioned to the mounting point of the marker under any condition;
the signal is clear and easy to identify.
And 5, positioning the electronic information marker by using a detector when the cable is positioned, and finally positioning the cable.
The method for identifying the cable through the electronic information identifier comprises the following steps: and installing and burying an electronic marker in the cable channel, and storing the related information of the cable in the chip to be cured on site.
And 5, positioning the electronic information marker by using the detector, and finally positioning the cable, wherein the method comprises the following steps: the method comprises the steps of firstly realizing rough positioning according to longitude and latitude of a GPS, then opening a detector to emit electromagnetic waves, feeding back a signal by an electronic identifier buried underground, realizing intelligent accurate positioning by the detector according to the strength of the fed-back signal, and directly reading basic information of a channel and detailed information laid by a feeder line stored on the electronic identifier.
The electronic information identifier is a passive electronic information identifier, is arranged above the cable in the channel and is at least 10cm away from the cable; the detector is wirelessly connected with the passive electronic information identifier; the passive electronic information marker is in ceramic package and is fixedly installed in a inhaul cable buckling mode; the passive electronic information identifier is arranged on a middle joint, a terminal and a branch box of the cable in the channel. The passive electronic information marker is arranged in the shaft wall concrete in the channel; the passive electronic information identifier is arranged on a top pipe orifice or a buried pipe orifice in the channel; the passive electronic information identifier is arranged at the turning starting point, the turning end point and the turning radius vertex of the cable in the channel; the installation distance of the passive electronic information identifier is not more than 30 meters; arranging an electronic information identifier every 6 meters on the path of the cable at the pipe jacking section; and arranging an electronic information identifier every 15 meters on the cable path of the buried pipe section.
Claims (10)
1. A cable information positioning and information acquisition method in a cable channel comprises the following steps:
step 1, checking a target cable;
step 2, detecting a target cable;
step 3, distinguishing the cables in the same ditch respectively, and marking the cables through an electronic information marker;
Step 4, collecting and storing various basic information and logic information of the cable;
and 5, positioning the electronic information marker by using a detector when the cable is positioned, and finally positioning the cable.
2. The method for locating and collecting information about cables in cable channel according to claim 1, wherein: the object of the step 1 for firstly checking the target cable is as follows: the power cable, the channel and related equipment for realizing electrical connection through the cable comprise a cable body, accessories, a switching station, a ring main unit, an opening and closing station, a distribution room, a distribution box, a grounding device, a grounding box, a cable support, a terminal station and a cable channel; the cable channel refers to a pipeline building and a structure body for cable protection, and comprises a direct burial, a drainage pipe, a cable trench, a working well, a joint working well, a tunnel and a bridge.
3. The method for locating and collecting information about cables in cable channel according to claim 1, wherein: the method for detecting the target cable comprises the following steps: the cable is detected by an electromagnetic method, after a signal current I which is directly connected or inducts a certain frequency is applied to the cable to be detected by a transmitter, the current flows in the cable to be detected and generates an electromagnetic field in the surrounding space, and the intensity H is determined by the following formula:
H=K·（I/R）
In the formula, K is a field intensity coefficient, I is current intensity, R is the distance between any point around the cable and a current center, and the receiver is used for measuring the intensity and distribution of the electromagnetic field on the ground to determine the position and the burial depth of the cable to be measured, so that the cable to be measured is positioned.
4. The method for locating and collecting information about cables in cable channel according to claim 1, wherein: the method for distinguishing the cables in the same channel respectively in the step 3 comprises the following steps: the transmitter of the pipeline identification detection equipment transmits signals through the coupling coil, the signals are coupled to the cable metal sheath, the signals are distributed along the pipeline to generate an alternating electromagnetic field, and a detector is used by detection personnel on the ground to track the signals, so that the path, the trend, the phase or different loop names of the pipeline are detected and identified.
5. The method for locating and collecting information about cables in cable channel according to claim 1, wherein: step 4, collecting and storing various basic information and logic information of the cable, wherein the basic information comprises cable name attributes, phases, states, plane positions, burial depth or height, trends, voltage levels, grounding types, starting points, inflection points, stop points, name attributes of collecting channels, plane positions, communication relations, top burial depth or height, trends, sizes and types, pipe hole and support positions, parameter firewalls and name attributes, positions and types of working wells; the logical information includes: electrical connection relation, starting point and end point intervals, work well adjacent relation, pipeline connection relation, cable perforation logic, available protective pipes and installation phase sequence; and the basic information and the logic information are collected through a mobile terminal installation APP and are sent to an upper computer system for storage in real time.
6. The method for locating and collecting information about cables in cable channel according to claim 1, wherein: the method for identifying the cable through the electronic information identifier comprises the following steps: and installing and burying an electronic marker in the cable channel, and storing the related information of the cable in the chip to be cured on site.
7. The method for locating and collecting information about cables in cable channel according to claim 1, wherein: and 5, positioning the electronic information marker by using the detector, and finally positioning the cable, wherein the method comprises the following steps: the method comprises the steps of firstly realizing rough positioning according to longitude and latitude of a GPS, then opening a detector to emit electromagnetic waves, feeding back a signal by an electronic identifier buried underground, realizing intelligent accurate positioning by the detector according to the strength of the fed-back signal, and directly reading basic information of a channel and detailed information laid by a feeder line stored on the electronic identifier.
8. The method for locating and collecting information about cables in cable channel according to claim 1, wherein: the electronic information identifier is a passive electronic information identifier, is arranged above the cable in the channel and is at least 10cm away from the cable; the detector is in wireless connection with the passive electronic information identifier.
9. The method for locating and collecting information about cables in cable duct according to claim 8, wherein: the passive electronic information marker is in ceramic package and is fixedly installed in a inhaul cable buckling mode; the passive electronic information identifier is arranged on a middle joint, a terminal and a branch box of the cable in the channel.
10. The method for locating and collecting information about cables in cable duct according to claim 8, wherein: the passive electronic information marker is arranged in the shaft wall concrete in the channel; the passive electronic information identifier is arranged on a top pipe orifice or a buried pipe orifice in the channel; the passive electronic information identifier is arranged at the turning starting point, the turning end point and the turning radius vertex of the cable in the channel; the installation distance of the passive electronic information identifier is not more than 30 meters; arranging an electronic information identifier every 6 meters on the path of the cable at the pipe jacking section; and arranging an electronic information identifier every 15 meters on the cable path of the buried pipe section.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112578220A (en) * | 2020-11-26 | 2021-03-30 | 贵州电网有限责任公司 | Underground cable fault on-line positioning system and method |
| CN112817050A (en) * | 2021-01-13 | 2021-05-18 | 陕西奇力达电子科技有限公司 | Transformer substation cable path detection device and method |
| CN113538821A (en) * | 2021-07-28 | 2021-10-22 | 广东电网有限责任公司 | External damage prevention alarm device and method for cable |
| CN115248454A (en) * | 2022-07-05 | 2022-10-28 | 北京市燃气集团有限责任公司 | Underground pipeline positioning system and method based on electronic marker |
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