CN117630612B - Discharge detection device and method for mixed gas insulation substation equipment - Google Patents
Discharge detection device and method for mixed gas insulation substation equipment Download PDFInfo
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- CN117630612B CN117630612B CN202410102172.3A CN202410102172A CN117630612B CN 117630612 B CN117630612 B CN 117630612B CN 202410102172 A CN202410102172 A CN 202410102172A CN 117630612 B CN117630612 B CN 117630612B
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- 238000001514 detection method Methods 0.000 title claims abstract description 118
- 238000009413 insulation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 239000000428 dust Substances 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 50
- 230000002159 abnormal effect Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 37
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Classifications
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
- B08B7/026—Using sound waves
- B08B7/028—Using ultrasounds
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to the technical field of mixed gas insulation substations, in particular to a discharge detection device and method of mixed gas insulation substation equipment. The discharge detection device includes: the device comprises a movement detection mechanism, a controller and a plurality of fixed detection mechanisms; the fixed detection mechanism includes: the ultrasonic transmitter and the ultrasonic transceiver are respectively connected with the mixed gas insulation substation equipment; the movement detection mechanism includes: the ultrasonic wave receiver is fixedly connected with the movable bracket; the controller is used for determining the coordinates of the corrected discharge part and the length of the corrected discharge part. The invention adopts a non-contact discharge detection mode, can remove dust and correct the initial discharge detection result, and improves the safety and accuracy.
Description
Technical Field
The invention relates to the technical field of mixed gas insulation substations, in particular to a discharge detection device and method of mixed gas insulation substation equipment.
Background
Discharge detection of mixed gas insulated substation equipment is often required to reduce safety hazards. The conventional discharge detection method is contact type discharge detection, and the contact type discharge detection method needs to be in contact with mixed gas insulation substation equipment.
In the related art, the method of contacting with the mixed gas insulated substation equipment to perform discharge detection easily generates electric shock hazard, dust exists at the discharge part of the mixed gas insulated substation, and the dust can move under the action of an electric field to influence the discharge detection result. In addition, the discharge detection result in the related art does not correct the discharge site detection result, further resulting in inaccuracy of the discharge detection result.
Therefore, there is a need to design a discharge detection device and method for a mixed gas insulated substation device to reduce potential safety hazards and improve accuracy of detection results.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
Therefore, the invention provides a discharge detection device and method for mixed gas insulation substation equipment, which adopt a non-contact discharge detection mode, can remove dust and correct an initial discharge detection result, and improve safety and accuracy.
According to a first aspect of the present invention, there is provided a discharge detection method of a mixed gas insulated substation device, comprising: determining initial discharge position coordinates and initial discharge position length according to the ultrasonic transmission speed of the ultrasonic transceiver; determining a first fixed detection mechanism corresponding to the initial discharge position coordinates, wherein an ultrasonic transmitter of the first fixed detection mechanism is defined as a first ultrasonic transmitter, and the first ultrasonic transmitter has first positioning coordinates; determining a second stationary detection means adjacent to the first stationary detection means, the ultrasonic emitter of the second stationary detection means being defined as a second ultrasonic emitter, the second ultrasonic emitter having second positioning coordinates; determining a moving track of the movable support according to the first positioning coordinate, the second positioning coordinate and the initial discharge position coordinate; determining the repetition number of the movable support moving along the moving track according to the initial discharging part length and the moving track length; the movable support is made to reciprocate in the range of the moving track so as to remove dust through the cooperation of the ultrasonic transmitter and the ultrasonic receiver, and the moving distance of the movable support for reciprocating movement is equal to the length of the moving track after the repetition number is added by 1; determining a corrected discharge position coordinate and a corrected discharge position length according to the ultrasonic transmission speed of the first ultrasonic transmitter and the ultrasonic transmission speed of the second ultrasonic transmitter; the ultrasonic receiver is arranged on the movable support, and each of the first fixed detection mechanism and the second fixed detection mechanism comprises: the ultrasonic transmitter and the ultrasonic transceiver are respectively connected with the mixed gas insulation substation equipment.
Optionally, the initial discharge location coordinates include a first initial marginal coordinate and a second initial marginal coordinate, and determining a movement track of the movable support according to the first positioning coordinates, the second positioning coordinates and the initial discharge location coordinates includes: determining parallel lines of connecting lines between the first positioning coordinates and the second positioning coordinates; determining a first connecting line between the first positioning coordinate and the second initial marginal coordinate and a second connecting line between the second positioning coordinate and the first initial marginal coordinate, wherein the distance between the first positioning coordinate and the second initial marginal coordinate is larger than the distance between the first positioning coordinate and the first initial marginal coordinate; determining a first intersection point between the first connecting line and the parallel line and a second intersection point between the second connecting line and the parallel line; and taking a line segment between the first intersection point and the second intersection point as a moving track.
Optionally, determining parallel lines connecting lines between the first positioning coordinates and the second positioning coordinates includes: calculating the ratio between the length of the connecting line and the length of the initial discharge part; multiplying the square value of the ratio by the distance between the first positioning coordinates and the initial discharge site, and taking the integer part of the obtained value as the distance between the parallel line and the connecting line; the parallel lines are determined based on the distance between the parallel lines and the connection lines.
Optionally, determining the number of repetitions of the movement of the movable support along the movement track according to the initial discharge portion length and the length of the movement track includes: dividing the length of the initial discharge part by the length of the moving track to obtain an initial value; the initial value is squared and the integer part of the obtained value is taken as the repetition number.
Optionally, determining the corrected discharge location coordinate and the corrected discharge location length according to the ultrasonic transmission speed of the first ultrasonic transmitter and the ultrasonic transmission speed of the second ultrasonic transmitter includes: when the movable support moves along the moving track, the distance between the ultrasonic receiver and the first ultrasonic transmitter is gradually reduced, and the distance between the ultrasonic receiver and the first ultrasonic transmitter is smaller than the distance between the ultrasonic receiver and the second ultrasonic transmitter, if the ultrasonic transmission speed of the first ultrasonic transmitter is abnormal, a first positioning connecting line between the first ultrasonic transmitter and the ultrasonic receiver is determined; when the movable support moves along the moving track, the distance between the ultrasonic receiver and the second ultrasonic transmitter is gradually reduced, and the distance between the ultrasonic receiver and the first ultrasonic transmitter is larger than the distance between the ultrasonic receiver and the second ultrasonic transmitter, if the ultrasonic transmission speed of the second ultrasonic transmitter is abnormal, a second positioning connecting line between the second ultrasonic transmitter and the ultrasonic receiver is determined; taking the intersection point coordinate of the straight line where the initial discharge part is located and the first positioning connecting line as a first marginal point coordinate, taking the intersection point coordinate of the straight line where the initial discharge part is located and the second positioning connecting line as a second marginal point coordinate, and correcting the discharge part coordinate to comprise the first marginal point coordinate and the second marginal point coordinate; taking the length between the first marginal point coordinate and the second marginal point coordinate as the corrected discharge part length, wherein the abnormal ultrasonic transmission speed means that the difference between the ultrasonic transmission speed and the preset speed is larger than the deviation threshold value.
According to a second aspect of the present invention, there is provided a discharge detection apparatus of a mixed gas insulated substation device, comprising: the device comprises a movement detection mechanism, a controller and a plurality of fixed detection mechanisms; the fixed detection mechanism includes: the ultrasonic transmitter and the ultrasonic transceiver are respectively connected with the mixed gas insulation substation equipment; the movement detection mechanism includes: the ultrasonic wave receiver is fixedly connected with the movable bracket; the controller is configured to perform the discharge detection method of the first aspect or the mixed gas insulated substation device in each implementation manner of the first aspect.
Optionally, the fixed detection mechanism further comprises a connecting rod, the connecting rod is fixedly connected with a sleeve, the sleeve is in threaded connection with a threaded rod, one end of the threaded rod is fixedly connected with a sucker, and the sucker is adsorbed on the mixed gas insulation substation equipment; connecting rod fixedly connected with mounting bracket, fixedly mounted with ultrasonic transmitter and ultrasonic transceiver on the mounting bracket.
Optionally, one end of the sleeve away from the sucker is fixedly connected with a permanent magnet, the other end of the threaded rod is fixedly connected with a handle, the threaded rod is fixedly sleeved with an electromagnet, the electromagnet is electrically connected with an electromagnet power supply, and the electromagnet is used for adsorbing the permanent magnet when being electrified so as to limit the relative rotation of the threaded rod and the sleeve.
Optionally, the movable support comprises: the base is provided with a movable wheel; the lifting rod sleeve is provided with a lifting rod mounting hole; the lifting rod is in threaded connection with the lifting rod sleeve through a lifting rod mounting hole, a column mounting hole is formed, a sliding block is fixedly arranged in the column mounting hole, and the ultrasonic receiver is arranged on the lifting rod; the stand, the one end and the base fixed connection of stand, the other end of stand wears to establish in the stand mounting hole, and the spout has been seted up to the periphery of stand, and the slider setting is in the spout.
Optionally, the movable support further comprises: the lifting driving motor is arranged on the base, is in transmission connection with the lifting rod sleeve and is used for driving the lifting rod sleeve to rotate so as to change the height of the lifting rod; and the power mechanism is in transmission connection with the movable wheel and is used for realizing the movement of the movable bracket.
One of the above technical solutions has the following advantages or beneficial effects:
According to the discharge detection device of the mixed gas insulation substation equipment, as non-contact discharge detection is carried out by utilizing ultrasonic waves, potential safety hazards are reduced, and safety is improved; because the ultrasonic wave is adopted for dust removal, the influence of dust on the detection result is reduced, and the accuracy is improved; the dust removal effect is improved as the reciprocating movement is carried out in the range of the moving track; since the moving range of the movable bracket is limited by the moving track, the efficiency is improved; since the discharge detection result is corrected, the accuracy of the detection result is improved.
The discharge detection method of the mixed gas insulated substation equipment is realized based on the discharge detection device of the mixed gas insulated substation equipment, and the discharge detection method of the mixed gas insulated substation equipment has corresponding technical effects because the discharge detection device of the mixed gas insulated substation equipment has the technical effects.
Drawings
Fig. 1 is a schematic diagram of a part of a discharge detection apparatus of a mixed gas insulated substation device according to an embodiment of the present invention;
fig. 2 shows a schematic diagram of a part of a discharge detection apparatus of a mixed gas insulated substation device according to an embodiment of the present invention;
fig. 3 is a schematic diagram showing a connection structure of a controller in a discharge detection device of a mixed gas insulated substation equipment according to an embodiment of the present invention;
Fig. 4 shows a flowchart of a discharge detection method of a mixed gas insulated substation device according to an embodiment provided by the present invention;
Fig. 5 shows a schematic diagram of a movement track according to an embodiment of the present invention.
Detailed Description
In order to at least solve one of the technical problems existing in the prior art or related technologies, the invention provides a discharge detection device and a method for mixed gas insulation substation equipment. Discharge detection apparatuses and methods of a mixed gas insulated substation device according to some embodiments provided by the present invention are described below with reference to fig. 1 to 5.
Referring to fig. 1 to 3, an embodiment of the present invention provides a discharge detection apparatus of a mixed gas insulated substation device, including: a movement detection mechanism 100, a controller 200, and a plurality of stationary detection mechanisms 300; each of the stationary detection mechanisms 300 includes: an ultrasonic transmitter 301 and an ultrasonic transceiver 302, the ultrasonic transmitter 301 and the ultrasonic transceiver 302 being connected to a mixed gas insulated substation equipment (not shown in the figure), respectively; the movement detection mechanism 100 includes: the ultrasonic device comprises a movable bracket 101 and an ultrasonic receiver 102, wherein the ultrasonic receiver 102 is fixedly connected with the movable bracket 101; the controller 200 is configured to determine an initial discharge site coordinate and an initial discharge site length according to an ultrasonic transmission speed of the ultrasonic transceiver 302; determining a first fixed detection mechanism corresponding to the initial discharge site coordinates, the ultrasonic transmitter 301 of the first fixed detection mechanism being defined as a first ultrasonic transmitter having first positioning coordinates A1; determining a second stationary detection means adjacent to the first stationary detection means, the ultrasonic emitter 301 of the second stationary detection means being defined as a second ultrasonic emitter having a second positioning coordinate A2; determining a moving track of the movable support 101 according to the first positioning coordinate A1, the second positioning coordinate A2 and the initial discharge position coordinate; determining the number of repetitions of the movement of the movable support 101 along the movement track according to the initial discharge portion length and the length of the movement track; reciprocating the movable support 101 within a movement track range to remove dust by the cooperation of the ultrasonic transmitter 301 and the ultrasonic receiver 102, wherein the movement distance of the reciprocating movement of the movable support 101 is equal to the length of the movement track multiplied by the number of times of repetition added with 1; and determining the coordinates of the corrected discharge part and the length of the corrected discharge part according to the ultrasonic transmission speed of the first ultrasonic transmitter and the ultrasonic transmission speed of the second ultrasonic transmitter.
In an exemplary embodiment, the mixed gas may be, for example, a mixed gas of nitrogen and sulfur fluoride gas. The controller 200 may be connected to the ultrasonic transmitter 301, the ultrasonic transceiver 302, and the ultrasonic receiver 102, respectively, as shown in fig. 3, to control the transmission of ultrasonic waves, and acquire an ultrasonic transmission time, and may determine an ultrasonic transmission speed according to the ultrasonic transmission time and the ultrasonic transmission distance, for example, divide the ultrasonic transmission time by the ultrasonic transmission distance, to obtain the ultrasonic transmission speed. The discharge part can be detected by utilizing the characteristic that the ultrasonic transmission speed of the discharge part is different from that of the non-discharge part. The ultrasonic transmission distance can be calculated by using a geometric relationship based on the distance between the mixed gas insulated substation equipment and the ultrasonic transceiver 302, the distance between the ultrasonic transmitter 301 and the ultrasonic receiver 102, the ultrasonic emission angle of the ultrasonic transceiver 302, and the like.
In an exemplary embodiment, the ultrasonic transmission speed is compared with a predetermined speed, and when the difference between the ultrasonic transmission speed and the predetermined speed is greater than a deviation threshold value, it may be determined that a discharge portion exists on an ultrasonic transmission path, an intersection point of the ultrasonic transmission path and a straight line where the mixed gas insulated substation equipment is located is an initial discharge portion coordinate, the initial discharge portion coordinate may be a coordinate set, and a coordinate set coverage area length is an initial discharge portion length. The first stationary detection mechanism and the second stationary detection mechanism are two stationary detection mechanisms 300 of the plurality of stationary detection mechanisms 300. The plurality of stationary detection mechanisms 300 may be arranged in a row along a line parallel to a line along which the gas-insulated substation equipment is located. The second stationary detection means may be the one 300 on the right side of the first stationary detection means.
In the exemplary embodiment, since dust removal is performed by the ultrasonic transmitter 301 and the ultrasonic receiver 102, the detection result accuracy is improved; the non-contact detection is realized by adopting the matching of the ultrasonic transmitter 301, the ultrasonic transceiver 302 and the ultrasonic receiver 102, so that the safety is improved; since the corrected discharge site coordinates and the corrected discharge site length are determined, accuracy is further improved.
Further, the fixed detection mechanism 300 further comprises a connecting rod 303, the connecting rod 303 is fixedly connected with a sleeve 304, the sleeve 304 is in threaded connection with a threaded rod 305, one end of the threaded rod 305 is fixedly connected with a sucker 306, and the sucker 306 is adsorbed on the mixed gas insulation substation equipment; the connecting rod 303 is fixedly connected with a mounting frame 307, and an ultrasonic transmitter 301 and an ultrasonic transceiver 302 are fixedly installed on the mounting frame 307.
In an exemplary embodiment, the sucker 306 can improve the firmness of the fixed connection, improve the stability of the connection, and provide guarantee for the normal use of the ultrasonic transmitter 301 and the ultrasonic transceiver 302.
Further, one end of the sleeve 304 far away from the sucker 306 is fixedly connected with a permanent magnet 308, the other end of the threaded rod 305 is fixedly connected with a handle 309, the threaded rod 305 is fixedly sleeved with an electromagnet 310, the electromagnet 310 is electrically connected with an electromagnet power supply 311, and the electromagnet 310 is used for adsorbing the permanent magnet 308 when being electrified so as to limit the relative rotation of the threaded rod 305 and the sleeve 304.
In the exemplary embodiment, the engagement of permanent magnet 308 and electromagnet 310 limits the relative rotation of threaded rod 305 and sleeve 304, increasing the robustness of the connection of suction cup 306 to the gas-insulated substation equipment.
Further, the movable bracket 101 includes: a base 103, the base 103 being provided with a moving wheel 104; a lifter sleeve 105 provided with a lifter installation hole 106; the lifting rod 107 is in threaded connection with the lifting rod sleeve 105 through a lifting rod mounting hole 106, a column mounting hole 108 is formed, a sliding block 109 is fixedly arranged in the column mounting hole 108, and the ultrasonic receiver 102 is arranged on the lifting rod 107; the stand 110, the one end and the base 103 fixed connection of stand 110, the other end of stand 110 wears to establish in stand mounting hole 108, and spout 111 has been seted up to the periphery of stand 110, and slider 109 sets up in spout 111.
In an exemplary embodiment, the lifter 107 may be lifted by the rotation of the lifter sleeve 105, and the cooperation of the sliding groove 111 and the sliding block 109 restricts the rotation of the lifter 107, so that the stability of the orientation of the ultrasonic receiver 102 may be improved, and accordingly, the accuracy of the detection result may be improved.
Further, the movable bracket further includes: the lifting driving motor is arranged on the base 103, is in transmission connection with the lifting rod sleeve 105 and is used for driving the lifting rod sleeve 105 to rotate so as to change the height of the lifting rod 107; and the power mechanism is in transmission connection with the moving wheel 104 and is used for realizing the movement of the movable bracket 101.
In an exemplary embodiment, through the driving, automatic operation is realized, the labor cost is reduced, and the efficiency is improved.
In another embodiment, referring to fig. 4, there is provided a discharge detection method of a mixed gas insulated substation device, including: s410, determining initial discharge position coordinates and initial discharge position length according to the ultrasonic transmission speed of the ultrasonic transceiver 302; s420, determining a first fixed detection mechanism corresponding to the initial discharge position coordinate, wherein an ultrasonic transmitter 301 of the first fixed detection mechanism is defined as a first ultrasonic transmitter, and the first ultrasonic transmitter has a first positioning coordinate A1; s430, determining a second fixed detection mechanism adjacent to the first fixed detection mechanism, wherein an ultrasonic transmitter 301 of the second fixed detection mechanism is defined as a second ultrasonic transmitter, and the second ultrasonic transmitter has a second positioning coordinate A2; s440, determining a moving track of the movable support 101 according to the first positioning coordinate A1, the second positioning coordinate A2 and the initial discharge position coordinate; s450, determining the repetition number of the movable support 101 moving along the moving track according to the initial discharging part length and the moving track length; s460, reciprocating the movable support 101 within the movement track range to remove dust by the cooperation of the ultrasonic transmitter 301 and the ultrasonic receiver 102, wherein the movement distance of the reciprocating movement of the movable support 101 is equal to the length of the movement track multiplied by the repetition number added with 1; s470, determining a corrected discharge position coordinate and a corrected discharge position length according to the ultrasonic transmission speed of the first ultrasonic transmitter and the ultrasonic transmission speed of the second ultrasonic transmitter; the ultrasonic receiver 102 is provided on the movable bracket 101, and each of the first and second fixed detection mechanisms 300 includes: an ultrasonic transmitter 301 and an ultrasonic transceiver 302, the ultrasonic transmitter 301 and the ultrasonic transceiver 302 being connected to a mixed gas insulated substation equipment, respectively.
The structure of the present exemplary embodiment may be implemented based on the above-described embodiments, and will not be described here again. The discharge detection method of the mixed gas insulated substation device of the exemplary embodiment may be implemented by the controller 200 in the above-described example.
Further, the initial discharge location coordinates include a first initial marginal coordinate B1 and a second initial marginal coordinate B2, and determining a movement track of the movable support 101 according to the first positioning coordinate A1, the second positioning coordinate A2, and the initial discharge location coordinates includes: determining parallel lines of a connecting line between the first positioning coordinate A1 and the second positioning coordinate A2; determining a first connecting line L1 between the first positioning coordinate A1 and the second initial marginal coordinate B2 and a second connecting line L2 between the second positioning coordinate A2 and the first initial marginal coordinate B1, wherein the distance between the first positioning coordinate A1 and the second initial marginal coordinate B2 is larger than the distance between the first positioning coordinate A1 and the first initial marginal coordinate B1; determining a first intersection point C1 between the first connecting line L1 and the parallel line and a second intersection point C2 between the second connecting line L2 and the parallel line; a line segment between the first intersection C1 and the second intersection C2 is taken as a movement track.
For example, as shown in fig. 5, an ultrasonic emitter 301 is provided at a first positioning coordinate A1, another ultrasonic emitter 301 is provided at a second initial marginal coordinate B2, and the first initial marginal coordinate B1 and the second initial marginal coordinate B2 define the range of the initial discharge portion. The first connecting line L1 is defined by a first positioning coordinate A1 and a second initial marginal coordinate B2; the second connecting line L2 is defined by a second positioning coordinate A2 and a first initial marginal coordinate B1; the line segment between the first intersection point C1 and the second intersection point C2 is a movement track. By limiting the movement track, regular movement of the movable support 101 is realized, and by regular movement, the efficiency can be improved, and the dust removal effect can be improved.
Further, determining parallel lines connecting lines between the first positioning coordinate A1 and the second positioning coordinate A2 includes: calculating the ratio between the length of the connecting line and the length of the initial discharge part; multiplying the square value of the ratio by the distance between the first positioning coordinate A1 and the initial discharge site, and taking the integer part of the obtained value as the distance between the parallel line and the connecting line; the parallel lines are determined based on the distance between the parallel lines and the connection lines.
In the exemplary embodiment, by distance limitation, the installation positions of the ultrasonic transmitter 301, the ultrasonic transceiver 302, and the like can be adaptively adjusted, so that the method has the characteristic of strong adaptability, and the dust removal effect can be improved.
Further, determining the number of repetitions of the movement of the movable support 101 along the movement trajectory according to the initial discharge portion length and the length of the movement trajectory includes: dividing the length of the initial discharge part by the length of the moving track to obtain an initial value; the initial value is squared and the integer part of the obtained value is taken as the repetition number.
In the exemplary embodiment, the number of repetitions of movement is adaptively adjusted based on the initial discharge portion length, so that the dust removal effect can be improved, and the self-adaption is strong.
Further, determining the corrected discharge location coordinates and the corrected discharge location length based on the ultrasonic transmission speed of the first ultrasonic transmitter and the ultrasonic transmission speed of the second ultrasonic transmitter, includes: when the movable bracket 101 moves along the movement track, the distance between the ultrasonic receiver 102 and the first ultrasonic transmitter gradually decreases, and the distance between the ultrasonic receiver 102 and the first ultrasonic transmitter is smaller than the distance between the ultrasonic receiver 102 and the second ultrasonic transmitter, if the ultrasonic transmission speed of the first ultrasonic transmitter is abnormal, determining a first positioning connection line between the first ultrasonic transmitter and the ultrasonic receiver 102; when the movable bracket 101 moves along the movement track, the distance between the ultrasonic receiver 102 and the second ultrasonic transmitter gradually decreases, and the distance between the ultrasonic receiver 102 and the first ultrasonic transmitter is larger than the distance between the ultrasonic receiver 102 and the second ultrasonic transmitter, if the ultrasonic transmission speed of the second ultrasonic transmitter is abnormal, determining a second positioning connection line between the second ultrasonic transmitter and the ultrasonic receiver 102; taking the intersection point coordinate of the straight line where the initial discharge part is located and the first positioning connecting line as a first marginal point coordinate, taking the intersection point coordinate of the straight line where the initial discharge part is located and the second positioning connecting line as a second marginal point coordinate, and correcting the discharge part coordinate to comprise the first marginal point coordinate and the second marginal point coordinate; taking the length between the first marginal point coordinate and the second marginal point coordinate as the corrected discharge part length, wherein the abnormal ultrasonic transmission speed means that the difference between the ultrasonic transmission speed and the preset speed is larger than the deviation threshold value.
In an exemplary embodiment, the discharge location is determined by the moving ultrasonic receiver 102, increasing the detection angle, and correspondingly, reducing the difference between the detection result and the actual situation, and improving the accuracy of the detection result.
Since the discharge detection method provided by the exemplary embodiment is implemented based on the discharge detection device of any one of the foregoing exemplary embodiments, the discharge detection method has all the advantages of the discharge detection device provided by any one of the foregoing exemplary embodiments, and part of implementation of the discharge detection method may be implemented with reference to the embodiment of the discharge detection device, which is not described herein. Accordingly, part of the implementation of the discharge detection device may also be implemented with reference to the discharge detection method embodiment.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "specific examples," or "some examples," etc., refer to a particular feature, structure, material, or characteristic described in connection with the embodiment or example as being included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (10)
1. A discharge detection method of a mixed gas insulated substation device, comprising:
determining initial discharge position coordinates and initial discharge position length according to the ultrasonic transmission speed of the ultrasonic transceiver;
determining a first fixed detection mechanism corresponding to the initial discharge site coordinates, the ultrasonic transmitter of the first fixed detection mechanism being defined as a first ultrasonic transmitter having first positioning coordinates;
Determining a second stationary detection means adjacent to the first stationary detection means, the ultrasonic emitter of the second stationary detection means being defined as a second ultrasonic emitter, the second ultrasonic emitter having second positioning coordinates;
Determining a moving track of the movable support according to the first positioning coordinate, the second positioning coordinate and the initial discharge position coordinate;
Determining the number of repetitions of the movement of the movable support along the movement track according to the initial discharge part length and the length of the movement track;
Reciprocating the movable support within a movement track range to remove dust through the cooperation of the ultrasonic transmitter and the ultrasonic receiver, wherein the movement distance of the reciprocating movement of the movable support is equal to the length of the movement track multiplied by the number of times of repetition added with 1;
determining a corrected discharge position coordinate and a corrected discharge position length according to the ultrasonic transmission speed of the first ultrasonic transmitter and the ultrasonic transmission speed of the second ultrasonic transmitter;
The ultrasonic receiver is arranged on the movable support, and each of the first fixed detection mechanism and the second fixed detection mechanism comprises: the device comprises an ultrasonic transmitter and an ultrasonic transceiver, wherein the ultrasonic transmitter and the ultrasonic transceiver are respectively connected with a mixed gas insulation substation device.
2. The discharge detection method of a mixed gas insulated substation apparatus according to claim 1, wherein the initial discharge part coordinates include a first initial marginal coordinate and a second initial marginal coordinate, wherein the determining a movement trajectory of a movable bracket according to the first positioning coordinate, the second positioning coordinate, and the initial discharge part coordinates includes:
Determining parallel lines of a connecting line between the first positioning coordinates and the second positioning coordinates;
Determining a first connecting line between the first positioning coordinate and the second initial marginal coordinate and a second connecting line between the second positioning coordinate and the first initial marginal coordinate, wherein the distance between the first positioning coordinate and the second initial marginal coordinate is larger than the distance between the first positioning coordinate and the first initial marginal coordinate;
Determining a first intersection point between the first connecting line and the parallel line and a second intersection point between the second connecting line and the parallel line;
and taking a line segment between the first intersection point and the second intersection point as the moving track.
3. The discharge detection method of a mixed gas insulated substation apparatus according to claim 2, wherein the determining parallel lines of wiring between the first positioning coordinates and the second positioning coordinates includes:
Calculating the ratio between the length of the connecting line and the length of the initial discharge part;
Multiplying the square value of the ratio by the distance between the first positioning coordinates and the initial discharge site, and taking the integer part of the obtained value as the distance between the parallel line and the connecting line;
The parallel lines are determined based on a distance between the parallel lines and the connection line.
4. The discharge detection method of a mixed gas insulated substation apparatus according to claim 1, wherein the determining the number of repetitions of the movement of the movable support along the movement locus according to the initial discharge part length and the length of the movement locus includes:
Dividing the length of the initial discharge part by the length of the moving track to obtain an initial value;
The initial value is squared and the integer part of the obtained value is taken as the repetition number.
5. The discharge detection method of a mixed gas insulated substation apparatus according to claim 1, wherein the determining the corrected discharge location coordinates and the corrected discharge location length based on the ultrasonic transmission speed of the first ultrasonic transmitter and the ultrasonic transmission speed of the second ultrasonic transmitter includes:
When the movable support moves along the moving track, the distance between the ultrasonic receiver and the first ultrasonic transmitter is gradually reduced, and the distance between the ultrasonic receiver and the first ultrasonic transmitter is smaller than the distance between the ultrasonic receiver and the second ultrasonic transmitter, if the ultrasonic transmission speed of the first ultrasonic transmitter is abnormal, determining a first positioning connecting line between the first ultrasonic transmitter and the ultrasonic receiver;
when the movable support moves along the moving track, the distance between the ultrasonic receiver and the second ultrasonic transmitter is gradually reduced, and the distance between the ultrasonic receiver and the first ultrasonic transmitter is larger than the distance between the ultrasonic receiver and the second ultrasonic transmitter, if the ultrasonic transmission speed of the second ultrasonic transmitter is abnormal, a second positioning connecting line between the second ultrasonic transmitter and the ultrasonic receiver is determined;
Taking the intersection point coordinate of the straight line where the initial discharge part is located and the first positioning connecting line as a first marginal point coordinate, taking the intersection point coordinate of the straight line where the initial discharge part is located and the second positioning connecting line as a second marginal point coordinate, and correcting the discharge part coordinate to comprise the first marginal point coordinate and the second marginal point coordinate;
Taking the length between the first marginal point coordinate and the second marginal point coordinate as the corrected discharge part length,
The occurrence of the abnormality in the ultrasonic transmission speed means that the difference between the ultrasonic transmission speed and the predetermined speed is greater than the deviation threshold.
6. A discharge detection apparatus for a mixed gas insulated substation device, comprising: the device comprises a movement detection mechanism, a controller and a plurality of fixed detection mechanisms;
the fixed detection mechanism includes: the ultrasonic transmitter and the ultrasonic transceiver are respectively connected with the mixed gas insulation substation equipment;
the movement detection mechanism includes: the ultrasonic receiver is fixedly connected with the movable bracket;
the controller is configured to perform the discharge detection method of the mixed gas insulated substation equipment according to any one of claims 1 to 5.
7. The discharge detection device of a mixed gas insulated substation apparatus according to claim 6, wherein the fixed detection mechanism further comprises a connecting rod, the connecting rod is fixedly connected with a sleeve, the sleeve is in threaded connection with a threaded rod, one end of the threaded rod is fixedly connected with a sucker, and the sucker is adsorbed on the mixed gas insulated substation apparatus; the connecting rod fixedly connected with mounting bracket, fixed mounting has on the mounting bracket ultrasonic transmitter with ultrasonic transceiver.
8. The discharge detection device of a mixed gas insulated substation apparatus according to claim 7, wherein one end of the sleeve away from the sucker is fixedly connected with a permanent magnet, the other end of the threaded rod is fixedly connected with a handle, the threaded rod is fixedly sleeved with an electromagnet, the electromagnet is electrically connected with an electromagnet power supply, and the electromagnet is used for adsorbing the permanent magnet when being electrified so as to limit the relative rotation of the threaded rod and the sleeve.
9. The discharge detection apparatus of a mixed gas insulated substation device according to claim 6, wherein the movable rack comprises:
the base is provided with a movable wheel;
The lifting rod sleeve is provided with a lifting rod mounting hole;
The lifting rod is in threaded connection with the lifting rod sleeve through the lifting rod mounting hole, a column mounting hole is formed in the lifting rod sleeve, a sliding block is fixedly arranged in the column mounting hole, and the ultrasonic receiver is arranged on the lifting rod;
the stand, the one end of stand with base fixed connection, the other end of stand wears to establish in the stand mounting hole, the spout has been seted up to the periphery of stand, the slider sets up in the spout.
10. The discharge detection apparatus of a mixed gas insulated substation device according to claim 9, wherein the movable rack further comprises:
The lifting driving motor is arranged on the base, is in transmission connection with the lifting rod sleeve and is used for driving the lifting rod sleeve to rotate so as to change the height of the lifting rod;
and the power mechanism is in transmission connection with the movable wheel and is used for realizing the movement of the movable bracket.
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