CN111398661A - Direct current stray current interference detection device, system and detection method - Google Patents
Direct current stray current interference detection device, system and detection method Download PDFInfo
- Publication number
- CN111398661A CN111398661A CN202010349039.XA CN202010349039A CN111398661A CN 111398661 A CN111398661 A CN 111398661A CN 202010349039 A CN202010349039 A CN 202010349039A CN 111398661 A CN111398661 A CN 111398661A
- Authority
- CN
- China
- Prior art keywords
- reference electrode
- stray current
- detection device
- interference detection
- data recorder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/28—Electromagnetic compasses
- G01C17/32—Electron compasses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/14—Indicating direction of current; Indicating polarity of voltage
-
- 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
Abstract
A direct current stray current interference detection device comprises a data recorder and reference electrodes, wherein the reference electrodes comprise a first reference electrode, a second reference electrode and a central reference electrode. The direct current stray current interference detection method comprises the following steps: 1. arranging electrodes; 2. collecting data; 3. processing data; 4. and (5) vector synthesis. Direct current stray current interference detection device is through the three reference electrode that becomes the right angle and arranges, simplified cross line has been formed, thereby can measure the potential gradient of two mutually perpendicular's directions, be convenient for carry out the vector synthesis of potential gradient, obtain stray current's potential gradient and direction, stray current's detection has not only been realized, the equipment structure has been simplified simultaneously, the use quantity of reference electrode has been reduced, and carry out the collection and the processing of potential data through the data record appearance, compare in artifical degree, can be more accurate obtain measured data, make the interval need not satisfy specific requirement between the reference electrode, the degree of difficulty of reference electrode laying has been reduced.
Description
Technical Field
The invention belongs to the technical field of buried pipeline direct current interference protection, and particularly relates to a direct current stray current interference detection device, a direct current stray current interference source detection system and a detection method of direct current stray current interference and a direct current stray current interference source.
Background
At present, the electric line increases gradually, and track traffic lines such as electrified railway, subway develop rapidly, make stray current level greatly increased in the ground, produced serious electrochemical corrosion to burying ground metal pipeline.
Through detecting the stray current in the soil around burying ground metal pipeline, just can carry out the analysis to stray current's interference intensity, reachs the interference source, effectively reduces or eliminates stray current to burying ground metal pipeline's influence.
At present, for analyzing the dc stray current interference, a common method is to analyze the interference intensity and interference source of the stray current by measuring the dc potential gradient on the earth surface. The method for measuring the direct current potential gradient in the existing standard adopts a cross line method, the measuring method needs to arrange 4 same reference electrodes on the ground at proper positions near a pipeline, the 4 reference electrodes are divided into two groups, each group comprises 2 reference electrodes, wherein 1 group is arranged along the direction parallel to the pipeline, the other 1 group is arranged along the direction vertical to the pipeline, the distance between the two reference electrodes in each group is not less than 20m, the electrode distances of the two groups of reference electrodes are the same, the two groups of reference electrodes are symmetrically distributed in a cross way, two direct current voltmeter meters are also needed, and each direct current voltmeter is connected with the two reference electrodes in the same group.
Because the direct current potential gradient is measured by adopting the cross-line method, the equipment needs to be arranged according to the method, the arrangement requirement is high, the operation is complex, and the measurement operation is very inconvenient. In addition, the method uses a direct current voltmeter, manual reading is needed, then data analysis is carried out, the measurement accuracy and efficiency are not high, and dynamic direct current stray current interference caused by subways and the like cannot be analyzed timely and accurately.
Disclosure of Invention
The invention provides a direct current stray current interference detection device, a direct current stray current interference detection system and a direct current stray current interference detection method, aiming at the technical problems of high equipment layout requirement, troublesome operation, low accuracy and low measurement efficiency in the existing measurement mode.
In order to achieve the purpose, the invention adopts the technical scheme that:
a direct current stray current interference detection device comprises a data recorder and reference electrodes, wherein the reference electrodes comprise a first reference electrode, a second reference electrode and a central reference electrode;
the first reference electrode, the second reference electrode and the central reference electrode are all electrically connected with a data recorder through leads;
the line between the first reference electrode and the central reference electrode is perpendicular to the line between the second reference electrode and the central reference electrode.
Preferably, the data logger is provided with an electronic compass.
The utility model provides a direct current stray current interference source detecting system, includes analysis terminal and above-mentioned direct current stray current interference detection device, direct current stray current interference detection device sets up two at least, all is connected with analysis terminal electricity through the wire.
Preferably, the data recorder in the dc stray current interference detecting apparatus is provided with a satellite clock synchronizer and a satellite positioner.
A direct current stray current interference detection method adopts the direct current stray current interference detection device and comprises the following steps:
and (3) electrode layout:
grounding the first reference electrode, the second reference electrode and the central reference electrode, and enabling a connecting line between the first reference electrode and the central reference electrode to be vertical to the arrangement direction of the pipeline;
data acquisition:
the first reference electrode, the second reference electrode and the central reference electrode are used for detecting the earth surface at corresponding positions to measure a first potential difference VAAnd a second potential difference VBAnd send it to the data recorder; a first potential difference VAIs the potential difference between the first reference electrode and the central reference electrode, and the second potential difference VBIs the potential difference between the second reference electrode and the central reference electrode;
measuring the spacing k between the first reference electrode and the central reference electrode1And a spacing k between the second reference electrode and the central reference electrode2And will k1And k2Inputting the data into a data recorder through a keyboard arranged on the data recorder;
data processing:
the data recorder calculates a first potential gradient VVAnd a second potential gradient VP，
Vector synthesis:
the data recorder makes the first electric potential gradient V vertical to each otherVAnd a second potential gradient VPVector synthesis is carried out according to the Pythagorean theorem to obtain the potential gradient P of the stray currentGAnd a first angle α relative to a line drawn between the first reference electrode and the center reference electrode1。
Preferably, the electrode layout is replaced by:
grounding the first reference electrode, the second reference electrode and the central reference electrode;
the data acquisition step further comprises:
measuring an included angle β between a connection line between the first reference electrode and the central reference electrode and the due north direction through an electronic compass, and sending the included angle β to a data recorder;
when the line between the first reference electrode and the center reference electrode is located on the west side of the meridian, the included angle β is a negative angle, and when the line between the first reference electrode and the center reference electrode is located on the east side of the meridian, the included angle β is a positive angle;
the vector synthesizing step further comprises:
calculating stray current potential gradient P by data recorderGThe included angle α - α relative to the true north direction1+β。
A method for detecting a direct current stray current interference source adopts the direct current stray current interference source detection system and comprises the following steps:
equipment layout:
arranging each direct current stray current interference detection device at a plurality of positions respectively, grounding a first reference electrode, a second reference electrode and a central reference electrode of each direct current stray current interference detection device, and enabling a connecting line between the first reference electrode and the central reference electrode to be vertical to the arrangement direction of the pipeline;
data acquisition:
the data recorder of each direct current stray current interference detection device synchronously acquires data through the connected satellite clock synchronizer; during data acquisition, a data recorder of each direct current stray current interference detection device detects the earth surface at the corresponding position through a first reference electrode, a second reference electrode and a central reference electrode to measure a plurality of groups of first potential differences V at the same timeAAnd a second potential difference VBAnd send it to the data recorder; measuring the distance k between the first reference electrode and the central reference electrode of each DC stray current interference detection device1And a spacing k between the second reference electrode and the central reference electrode2And will k1And k2Inputting the data into a data recorder through a keyboard arranged on the data recorder; the data recorder of each direct current stray current interference detection device measures the current position of the direct current stray current interference detection device through the connected satellite positioner and uploads the position information to the analysis terminal;
data processing:
the data recorder of each DC stray current interference detection device performs multiple groups of first potential gradients V at the same timeVAnd a second potential gradient VPThe calculation of (a) is performed,
vector synthesis:
the data recorder of each DC stray current interference detection device can record the first potential gradient V at the same timeVAnd a second potential gradient VPVector synthesis is carried out according to the Pythagorean theorem to obtain the potential gradient P of the stray current at the same momentGAnd a first angle α relative to a line drawn between the first reference electrode and the center reference electrode1And uploading to an analysis terminal;
interference source acquisition:
the analysis terminal establishes a map, marks the positions of all the direct current stray current interference detection devices on the map according to the position information, marks the layout of pipelines on the map according to the pipeline layout information, and maps the stray current potential gradient P at the same momentGAccording to the layout of the pipes and the corresponding first included angle α1Marking the position of the corresponding direct current stray current interference detection device;
calculating the potential gradient P of stray current at the same timeGThe position of the intersection point on the map is obtained to obtain the position information of the interference source at the moment;
and collecting the position information of the interference sources at multiple moments to obtain the dynamic track of the interference sources.
Preferably, the device deployment step is replaced with:
arranging each direct current stray current interference detection device at a plurality of positions respectively, wherein a first reference electrode, a second reference electrode and a central reference electrode of each direct current stray current interference detection device are grounded;
the data acquisition step further comprises:
each direct current stray current interference detection device measures an included angle β of a connecting line between the first reference electrode and the central reference electrode relative to the true north direction through an electronic compass, and sends the included angle β to the data recorder;
when the line between the first reference electrode and the center reference electrode is located on the west side of the meridian, the included angle β is a negative angle, and when the line between the first reference electrode and the center reference electrode is located on the east side of the meridian, the included angle β is a positive angle;
the vector synthesizing step further comprises:
the data recorder of each DC stray current interference detection device calculates the potential gradient P of the stray currentGThe included angle α ═ α relative to the direction of the warp threads1+ β, and uploading the direction included angle α to an analysis terminal;
the interference source acquisition step is replaced by:
the analysis terminal establishes a map, marks the positions of all the direct current stray current interference detection devices on the map according to the position information, and makes the stray current potential gradient P at the same timeGMarking the position of the corresponding direct current stray current interference detection device according to the direction included angle α;
calculating the potential gradient P of stray current at the same timeGThe position of the intersection point on the map is obtained to obtain the position information of the interference source at the moment;
and collecting the position information of the interference sources at multiple moments to obtain the dynamic track of the interference sources.
Compared with the prior art, the invention has the advantages and positive effects that:
1. direct current stray current interference detection device is through the three reference electrode that becomes the right angle and arranges, simplified cross line has been formed, thereby can measure the potential gradient of two mutually perpendicular's directions, be convenient for carry out the vector synthesis of potential gradient, obtain stray current's potential gradient and direction, stray current's detection has not only been realized, the equipment structure has been simplified simultaneously, the use quantity of reference electrode has been reduced, and carry out the collection and the processing of potential data through the data record appearance, compare in artifical degree, can be more accurate obtain measured data, make the interval need not satisfy specific requirement between the reference electrode, the degree of difficulty of reference electrode laying has been reduced.
2. Through the electronic compass, the direction of the connecting line between the reference electrodes can be measured, so that the accurate direction of the stray current is obtained, the reference electrodes do not need to be arranged in parallel or vertically relative to the pipeline, and the degree of freedom of arrangement of the reference electrodes is improved.
3. Through setting up satellite clock synchronizer and satellite positioning ware, when making many direct current stray current interference detection device constitute direct current stray current interference source detecting system through analysis terminal, can carry out stray current's detection in step to fix a position the measuring position, thereby the accurate position that obtains the interference source. Further, the position information of the interference sources at a plurality of moments is collected, and the dynamic track of the interference sources can be obtained.
Drawings
FIG. 1 is a first schematic diagram of a DC stray current detection using the DC stray current interference detection apparatus of the present invention;
FIG. 2 is a second schematic diagram of DC stray current detection using the DC stray current interference detection apparatus of the present invention;
FIG. 3 is a first schematic diagram of interference source detection using the DC stray current interference source detection system of the present invention;
FIG. 4 is a second schematic diagram of the DC stray current interference source detection system according to the present invention for detecting an interference source;
in the above figures: 1. a data recorder; 11. an electronic compass; 12. a satellite clock synchronizer; 13. a satellite locator; 21. a first reference electrode; 22. a second reference electrode; 23. a central reference electrode; 3. analyzing the terminal; 4. a pipeline.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 2, the present invention provides a dc stray current interference detection apparatus, which is used for detecting a current gradient of a dc stray current on an earth surface around a buried pipeline 4, so as to analyze an interference intensity and an interference source of the dc stray current on the earth surface.
The direct stray current interference detection device comprises a data recorder 1 and a reference electrode.
The reference electrodes include a first reference electrode 21, a second reference electrode 22, and a center reference electrode 23.
The first reference electrode 21, the second reference electrode 22 and the central reference electrode 23 are all electrically connected with the data recorder 1 through conducting wires, so that the detected surface potential difference is sent to the data recorder 1 when the ground is connected, and the data recorder 1 processes and stores the potential difference information.
The connecting line between the first reference electrode 21 and the central reference electrode 23 is used as a first connecting line, the connecting line between the vertical second reference electrode 22 and the central reference electrode 23 is used as a second connecting line, the first connecting line and the second connecting line are mutually vertical, so that the two connecting lines form a rectangular coordinate system, and when the potential difference detection in two mutually vertical directions is carried out, the same central reference electrode 23 is shared, and compared with a cross line method, the use number of the reference electrodes is reduced.
As shown in fig. 1, when the dc stray current interference detection apparatus performs dc stray current potential detection, electrodes are disposed on the ground on one side above the pipeline 4, the first reference electrode 21, the second reference electrode 22, and the center reference electrode 23 are grounded, and the first connection line is perpendicular to the direction of the pipeline 4, so that the second connection line is parallel to the direction of the pipeline 4.
And data acquisition is carried out, the ground surface potential difference detection is carried out on the reference electrodes, and the distance between the reference electrodes is measured.
The first reference electrode 21, the second reference electrode 22 and the central reference electrode 23 synchronously detect corresponding grounding positions to obtain a first potential difference VAAnd a second potential difference VBAnd sends it to the data logger 1.
A first potential difference VAIs the potential difference between the first reference electrode 21 and the central reference electrode 23, and the second potential difference VBIs the potential difference between the second reference electrode 22 and the central reference electrode 23.
Measuring the spacing k between the first reference electrode 21 and the central reference electrode 231And a spacing k between the second reference electrode 22 and the central reference electrode 232. The data recorder 1 is provided with a keyboard as a man-machine interface, and k is set1And k2Entered via a keyboard and stored in the data recorder 1.
The data recorder 1 measures the first potential difference VAAnd a second potential difference VBCalculating a first potential gradient V at the same timeVAnd a second potential gradient VP，
Due to the first potential gradient VVAnd a second potential gradient VPPerpendicular to each other, the data recorder will obtain the first potential gradient V at the same time by the Pythagorean theoremVAnd a second potential gradient VPVector synthesis is carried out to obtain the potential gradient P of the stray current at the corresponding momentGWhile obtaining the potential gradient P of the stray current at that momentGA first included angle α with respect to the first line1At this moment in time the stray current potential gradient PGThe angle of a second included angle between the second connecting line and the second connecting line is 90- α1。
According to the potential gradient P of the stray currentGThe magnitude of the potential gradient of the DC stray current at the moment can be known, so that the interference intensity can be analyzed according to the first included angle α1Can know the time strayThe direction of the stray current can be known according to the layout angle of the pipeline and the deflection angle of the current relative to the pipeline, and the source of the stray current interference is analyzed.
In order to increase the freedom of arrangement of the reference electrodes, the data recorder 1 is provided with an electronic compass 11.
As shown in fig. 2, when the data recorder 1 is provided with the electronic compass 11 and then the electrodes are arranged, it is only necessary to ground the first reference electrode 21, the second reference electrode 22, and the central reference electrode 23, and it is not necessary to consider the angle between the first connection line and the direction in which the pipes are arranged.
When data acquisition is performed, the angle β of the first connection line with respect to the true north direction is measured by the electronic compass 11 and sent to the data logger 1.
When the first connection line between the first reference electrode 21 and the central reference electrode 23 is located on the west side of the meridian, the included angle β is a negative angle, i.e., a negative value, and when the first connection line between the first reference electrode 21 and the central reference electrode 23 is located on the east side of the meridian, the included angle β is a positive angle, i.e., a positive value.
During vector synthesis, the data recorder 1 calculates the potential gradient P of the stray currentGα of angle α relative to true north1+ β so that the stray current potential gradient P at that moment can be knownGFor the angle α of positive north direction skew, directly obtain stray current's accurate direction, need not lay the direction through the pipeline and carry out stray current direction's determination, make reference electrode ground connection lay more freely, improve equipment use flexibility.
As shown in fig. 3 to 4, the present invention provides a dc stray current interference source detection system, which includes an analysis terminal 3 and the dc stray current interference detection apparatus. The direct current stray current interference detection device in the direct current stray current interference source detection system is at least provided with two devices, and a data recorder 1 of each direct current stray current interference detection device is in communication connection with an analysis terminal 3.
The data recorder 1 is in communication connection with the analysis terminal 3, and can adopt wired transmission or wireless transmission for real-time transmission; or after the recorded data is detected, the analysis terminal 3 is connected to upload the data for the analysis terminal 3 to analyze.
In order to realize synchronous detection and position each direct current stray current interference detection device, a data recorder 1 in the direct current stray current interference detection device is provided with a satellite clock synchronizer 12 and a satellite positioner 13
As shown in fig. 3, when the dc stray current interference source detection system performs dynamic interference source detection, a plurality of detection positions are set for equipment layout, and a dc stray current interference detection apparatus is disposed at each detection position.
The first reference electrode 21, the second reference electrode 22 and the central reference electrode 23 in each direct current stray current interference detection device are grounded, and the first connecting line is perpendicular to the arrangement direction of the pipeline 4, so that the second connecting line is parallel to the arrangement direction of the pipeline 4.
And (3) acquiring data, wherein the data recorder 1 of each direct current stray current interference detection device detects the potential difference of the earth surface through the reference electrode, measures the distance between the reference electrodes in each direct current stray current interference detection device, and positions the detection position of each direct current stray current interference detection device.
During data acquisition, the data recorders 1 in the direct current stray current interference detection devices synchronously operate through the connected satellite clock synchronizer 12, so that data acquisition is synchronously performed through the reference electrode, and time information during data acquisition is recorded.
When each direct current stray current interference detection device carries out data acquisition, the data recorder 1 synchronously detects the earth surface at the corresponding position through the first reference electrode 21, the second reference electrode 22 and the central reference electrode 23 to measure a plurality of groups of first potential differences V at the same momentAAnd a second potential difference VBAnd sends it to the data recorder 1.
Measuring the spacing k between the first reference electrode 21 and the central reference electrode 23 of each DC stray current interference detection device1And second reference electrode 22 and central reference electrodeSpacing k between 232And will k1And k2Entered into the data recorder 1 via a keyboard.
The data recorder 1 of each dc stray current interference detection apparatus measures the current detection position thereof through the connected satellite positioner 13, and uploads the position information of the detection position to the analysis terminal 3.
The data processing is carried out, and the data recorder 1 of each DC stray current interference detection device further measures a plurality of groups of first potential differences V at the same timeAAnd a second potential difference VBCalculating multiple groups of first potential gradients V at the same timeVAnd a second potential gradient VP，
Vector synthesis is carried out, and the data recorder 1 of each direct current stray current interference detection device enables the first potential gradient V at the same timeVAnd a second potential gradient VPVector synthesis is carried out according to the Pythagorean theorem to obtain the potential gradient P of the stray current at the momentGWhile obtaining the potential gradient P of the stray current at that momentGA first included angle α with respect to the first line1And the stray current potential gradient P at that moment is calculatedGAnd first included angle α1By uploading to the analysis terminal 3.
Each DC stray current interference detection device obtains a plurality of stray current potential gradients P at the same timeGAnd a corresponding first included angle α1And uploaded to the analysis terminal 3.
And acquiring an interference source, establishing a map by the analysis terminal 3, and marking each detection position on the map according to the received position information. The layout information of the pipelines 4 is uploaded to the analysis terminal 3, and the analysis terminal 3 marks the routes of the pipelines 4 on a map according to the layout information of the pipelines 4, namely, the layout tracks of the pipelines 4 and the angles of the positions of the pipelines 4 relative to the true north direction can be shown on the map. The analysis terminal 3 marks the stray current potential gradient P obtained by the corresponding direct current stray current interference detection device at the same moment on each detection positionGAccording to a first included angle α1And the angle of the pipe 4 with respect to the meridian, setting the respective stray current potential gradient P at that momentGIn the direction of (a).
The analysis terminal 3 calculates the potential gradient P of each stray current at the same momentGThe intersection point of the two points is positioned on the map, so that the position information of the interference source at the moment is obtained.
According to the above manner, the analysis terminal 3 can obtain the position of an interference source at one moment. The direct current stray current interference source detection system collects interference source position information at multiple moments to obtain a continuous interference source position track, so that dynamic conditions of the interference source can be analyzed.
As shown in fig. 4, when the data recorder 1 is provided with the electronic compass 11, the process of the dynamic interference source detection system for interference source detection can be simplified.
When the equipment is arranged, after each direct current stray current interference detection device is arranged at a corresponding measurement position, only the first reference electrode 21, the second reference electrode 22 and the central reference electrode 23 need to be grounded, and the angle between the first connecting line and the arrangement direction of the pipeline 4 does not need to be considered.
When data acquisition is carried out, each direct current stray current interference detection device measures an included angle β of a first connecting line of each direct current stray current interference detection device relative to the positive north direction through the electronic compass 11 and sends the included angle β to the data recorder 1. when the first connecting line between the first reference electrode 21 and the central reference electrode 23 is located on the west side of a meridian, the included angle β is a negative angle, namely a negative value, and when the first connecting line between the first reference electrode 21 and the central reference electrode 23 is located on the east side of the meridian, the included angle β is a positive angle, namely a positive value.
When vector synthesis is carried out, the data recorder 1 of each direct current stray current interference detection device calculates the potential gradient P of the stray current at the momentGThe included angle α - α relative to the true north direction1+ β so that the stray current potential gradient P at that moment can be knownGAngle α offset from true north the data logger 1 uploads angle of heading α to the analysis terminal 3.
To carry outWhen the interference source is obtained, the potential gradient P of each stray current at the same moment is determined according to the direction included angle αGMarking the position of the corresponding DC stray current interference detection device, and directly setting the potential gradient P of each stray currentGThe exact direction of (A) need not be based on the first angle α1And the angle of the pipeline relative to the longitude is calculated, so that the potential gradient P of the stray current is improvedGThe calibration accuracy on a map is high, the reference electrode of each direct current stray current interference detection device can be freely arranged without depending on the arrangement direction of pipelines, and the potential gradient P of stray current cannot be increasedGThe difficulty of direction determination.
Claims (8)
1. The direct current stray current interference detection device is characterized by comprising a data recorder and reference electrodes, wherein the reference electrodes comprise a first reference electrode, a second reference electrode and a central reference electrode;
the first reference electrode, the second reference electrode and the central reference electrode are all electrically connected with a data recorder through leads;
the line between the first reference electrode and the central reference electrode is perpendicular to the line between the second reference electrode and the central reference electrode.
2. The dc stray current interference detecting apparatus according to claim 1, wherein said data logger is provided with an electronic compass.
3. A dc stray current interference source detection system, comprising an analysis terminal and the dc stray current interference detection apparatus of claim 1 or 2, wherein at least two dc stray current interference detection apparatuses are provided and are in communication connection with the analysis terminal.
4. The system according to claim 3, wherein the data recorder of the DC stray current interference detecting apparatus is provided with a satellite clock synchronizer and a satellite positioner.
5. A method for detecting dc stray current interference, using the apparatus of claim 1 or 2, comprising the steps of:
and (3) electrode layout:
grounding the first reference electrode, the second reference electrode and the central reference electrode, and enabling a connecting line between the first reference electrode and the central reference electrode to be vertical to the arrangement direction of the pipeline;
data acquisition:
the first reference electrode, the second reference electrode and the central reference electrode are used for detecting the earth surface at corresponding positions to measure a first potential difference VAAnd a second potential difference VBAnd send it to the data recorder; a first potential difference VAIs the potential difference between the first reference electrode and the central reference electrode, and the second potential difference VBIs the potential difference between the second reference electrode and the central reference electrode;
measuring the spacing k between the first reference electrode and the central reference electrode1And a spacing k between the second reference electrode and the central reference electrode2And will k1And k2Inputting the data into a data recorder through a keyboard arranged on the data recorder;
data processing:
the data recorder calculates a first potential gradient VVAnd a second potential gradient VP，
Vector synthesis:
the data recorder makes the first electric potential gradient V vertical to each otherVAnd a second potential gradient VPVector synthesis is carried out according to the Pythagorean theorem to obtain the potential gradient P of the stray currentGAnd a first angle α relative to a line drawn between the first reference electrode and the center reference electrode1。
6. The method of claim 5, wherein the electrode layout is replaced with:
grounding the first reference electrode, the second reference electrode and the central reference electrode;
the data acquisition step further comprises:
measuring an included angle β between a connection line between the first reference electrode and the central reference electrode and the due north direction through an electronic compass, and sending the included angle β to a data recorder;
when the line between the first reference electrode and the center reference electrode is located on the west side of the meridian, the included angle β is a negative angle, and when the line between the first reference electrode and the center reference electrode is located on the east side of the meridian, the included angle β is a positive angle;
the vector synthesizing step further comprises:
calculating stray current potential gradient P by data recorderGThe included angle α - α relative to the true north direction1+β。
7. A method for detecting a dc stray current interference source, using the system of claim 3, comprising the steps of:
equipment layout:
arranging each direct current stray current interference detection device at a plurality of positions respectively, grounding a first reference electrode, a second reference electrode and a central reference electrode of each direct current stray current interference detection device, and enabling a connecting line between the first reference electrode and the central reference electrode to be vertical to the arrangement direction of the pipeline;
data acquisition:
the data recorder of each direct current stray current interference detection device synchronously acquires data through the connected satellite clock synchronizer; during data acquisition, a data recorder of each direct current stray current interference detection device detects the earth surface at the corresponding position through a first reference electrode, a second reference electrode and a central reference electrode to measure a plurality of groups of first potential differences V at the same timeAAnd a second potential difference VBAnd send it to the data recorder; first reference electricity for measuring each DC stray current interference detection deviceSpacing k between electrodes and central reference electrode1And a spacing k between the second reference electrode and the central reference electrode2And will k1And k2Inputting the data into a data recorder through a keyboard arranged on the data recorder; the data recorder of each direct current stray current interference detection device measures the current position of the direct current stray current interference detection device through the connected satellite positioner and uploads the position information to the analysis terminal;
data processing:
the data recorder of each DC stray current interference detection device performs multiple groups of first potential gradients V at the same timeVAnd a second potential gradient VPThe calculation of (a) is performed,
vector synthesis:
the data recorder of each DC stray current interference detection device can record the first potential gradient V at the same timeVAnd a second potential gradient VPVector synthesis is carried out according to the Pythagorean theorem to obtain the potential gradient P of the stray current at the same momentGAnd a first angle α relative to a line drawn between the first reference electrode and the center reference electrode1And uploading to an analysis terminal;
interference source acquisition:
the analysis terminal establishes a map, marks the positions of all the direct current stray current interference detection devices on the map according to the position information, marks the layout of pipelines on the map according to the pipeline layout information, and maps the stray current potential gradient P at the same momentGAccording to the layout of the pipes and the corresponding first included angle α1Marking the position of the corresponding direct current stray current interference detection device;
calculating the potential gradient P of stray current at the same timeGThe position of the intersection point on the map is obtained to obtain the position information of the interference source at the moment;
and collecting the position information of the interference sources at multiple moments to obtain the dynamic track of the interference sources.
8. The dc stray current interference source detecting method according to claim 7, wherein said device layout step is replaced with:
arranging each direct current stray current interference detection device at a plurality of positions respectively, wherein a first reference electrode, a second reference electrode and a central reference electrode of each direct current stray current interference detection device are grounded;
the data acquisition step further comprises:
each direct current stray current interference detection device measures an included angle β of a connecting line between the first reference electrode and the central reference electrode relative to the true north direction through an electronic compass, and sends the included angle β to the data recorder;
when the line between the first reference electrode and the center reference electrode is located on the west side of the meridian, the included angle β is a negative angle, and when the line between the first reference electrode and the center reference electrode is located on the east side of the meridian, the included angle β is a positive angle;
the vector synthesizing step further comprises:
the data recorder of each DC stray current interference detection device calculates the potential gradient P of the stray currentGThe included angle α ═ α relative to the direction of the warp threads1+ β, and uploading the direction included angle α to an analysis terminal;
the interference source acquisition step is replaced by:
the analysis terminal establishes a map, marks the positions of all the direct current stray current interference detection devices on the map according to the position information, and makes the stray current potential gradient P at the same timeGMarking the position of the corresponding direct current stray current interference detection device according to the direction included angle α;
calculating the potential gradient P of stray current at the same timeGThe position of the intersection point on the map is obtained to obtain the position information of the interference source at the moment;
and collecting the position information of the interference sources at multiple moments to obtain the dynamic track of the interference sources.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010349039.XA CN111398661A (en) | 2020-04-28 | 2020-04-28 | Direct current stray current interference detection device, system and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010349039.XA CN111398661A (en) | 2020-04-28 | 2020-04-28 | Direct current stray current interference detection device, system and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111398661A true CN111398661A (en) | 2020-07-10 |
Family
ID=71433469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010349039.XA Pending CN111398661A (en) | 2020-04-28 | 2020-04-28 | Direct current stray current interference detection device, system and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111398661A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362562A (en) * | 2020-10-09 | 2021-02-12 | 中国电力科学研究院有限公司 | Method and system for measuring polarization potential of buried metal pipeline |
| CN114527161A (en) * | 2022-04-21 | 2022-05-24 | 国机传感科技有限公司 | Potential gradient measuring system |
| CN114778984A (en) * | 2022-04-28 | 2022-07-22 | 西南交通大学 | Method for detecting stray current of transformer substation based on earth surface potential change |
| CN114817862A (en) * | 2022-05-26 | 2022-07-29 | 江苏省地震局 | Method and device for positioning electromagnetic interference source |
-
2020
- 2020-04-28 CN CN202010349039.XA patent/CN111398661A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362562A (en) * | 2020-10-09 | 2021-02-12 | 中国电力科学研究院有限公司 | Method and system for measuring polarization potential of buried metal pipeline |
| CN112362562B (en) * | 2020-10-09 | 2024-01-26 | 中国电力科学研究院有限公司 | Method and system for measuring polarization potential of buried metal pipeline |
| CN114527161A (en) * | 2022-04-21 | 2022-05-24 | 国机传感科技有限公司 | Potential gradient measuring system |
| CN114527161B (en) * | 2022-04-21 | 2022-07-19 | 国机传感科技有限公司 | Potential gradient measuring system |
| CN114778984A (en) * | 2022-04-28 | 2022-07-22 | 西南交通大学 | Method for detecting stray current of transformer substation based on earth surface potential change |
| CN114778984B (en) * | 2022-04-28 | 2023-05-30 | 西南交通大学 | Transformer substation stray current detection method based on earth surface potential change |
| CN114817862A (en) * | 2022-05-26 | 2022-07-29 | 江苏省地震局 | Method and device for positioning electromagnetic interference source |
| CN114817862B (en) * | 2022-05-26 | 2023-09-26 | 江苏省地震局 | Method and device for positioning electromagnetic interference source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111398661A (en) | Direct current stray current interference detection device, system and detection method | |
| CN104568003B (en) | Remote monitoring system and method for ice coating process of power transmission lines | |
| CN108106562A (en) | A kind of contact net measuring method and device | |
| CN108731640A (en) | Metro Clearance detection method based on point cloud data and detecting system | |
| CN109115147A (en) | Full depth array inclinometer and method for measuring deep displacement | |
| CN208780164U (en) | Full depth array inclinometer | |
| CN108919367A (en) | Transmission line of alternation current inversion method based on current field | |
| CN110989012A (en) | Accurate electromagnetic measuring method for underground pipeline depth and pipeline instrument device | |
| CN108151766A (en) | Localization method, magnetic nail positioning navigation error correcting method and the positioning device of magnetic nail | |
| CN105043381A (en) | Magnetic nail-based positioning method | |
| CN212031583U (en) | Direct current stray current interference detection device and system | |
| CN111895962A (en) | Method for monitoring deformation of operation subway station | |
| CN114384593A (en) | Distributed three-dimensional induced polarization data acquisition and processing device and method | |
| CN102444111B (en) | Underground cave radiography detecting method | |
| CN113866696B (en) | Laboratory precision detection method for submarine cable fault detector based on magnetic vector data | |
| CN111175832B (en) | Frequency domain electromagnetic induction exploration method for estimating three-dimensional flow characteristics of underground water | |
| CN107085240A (en) | A kind of side slope magnetic fluid detection system and method | |
| CN109655925A (en) | Quick-moving type dyke hole transient electromagnetic continuous probe system and method | |
| CN108507452A (en) | A kind of assay method of PDL Catenary mast gauge | |
| CN107328416B (en) | A kind of smart phone real-time location method based on earth magnetism | |
| CN111175831B (en) | Conduction electrical prospecting method for estimating horizontal flow characteristics of underground water | |
| CN109613567A (en) | A kind of grounding net of transformer substation test electrode position indicator based on Global Satellite Navigation System | |
| CN103983239A (en) | Distance measuring method based on lane equal-width line | |
| CN208579904U (en) | A kind of device referring to wind pressure for measuring wind tunnel experiment | |
| CN103941095B (en) | A kind of method that the resistivity of underground metallic conduit surrounding soil is tested |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |