Substation auxiliary monitoring device and method thereof

Abstract

The invention discloses a transformer substation auxiliary monitoring device and method, and belongs to the technical field of transformer substation monitoring. The transformer substation auxiliary monitoring device comprises an inspection trolley, a self-checking temperature detection mechanism, an expansion joint expansion amount detection device and a distance measurement contrast mechanism; a humidity sensor, a self-checking temperature detection mechanism, an expansion joint expansion amount detection device and a distance measurement contrast mechanism are fixedly mounted on the inspection trolley; the self-checking temperature detection mechanism comprises a multi-point temperature detection module and a self-checking module; the distance measurement comparison mechanism comprises a comparison deformation module and a deformation detection module, the inspection trolley is provided with the comparison deformation module, and the inspection trolley is provided with the deformation detection module for detecting the deformation of the comparison deformation module. Through the mode, the multi-point temperature detection module monitors the temperature in the transformer substation; performing self-inspection on the multi-point temperature detection module through the self-inspection module; the expansion joint expansion amount detection device, the contrast deformation module and the deformation detection module are used for contrasting and detecting whether the expansion joint in the transformer substation has abnormal deformation or not.

Description

Technical Field

[0001] The present invention relates to the technical field of substation monitoring, and in particular to a substation auxiliary monitoring device and method thereof. Background Art

[0002] During daily use, substations need to monitor various conditions within the station, such as ambient temperature and humidity, equipment temperature, oil temperature, oil level, operating sound, etc., to ensure that abnormal conditions can be discovered in time, thereby ensuring the safe operation of the power system.

[0003] For example, the Chinese patent publication number CN218446925U discloses an intelligent monitoring device for a mobile electric substation. When in use, the mobile platform moves, driving the monitoring device body to move. The ambient temperature is detected by a temperature sensor and then compared with the temperature comparison module. If high temperature occurs, an early warning is issued through the cooperation of a wireless signal module, a data display screen and a speaker module.

[0004] However, the temperature sensor may have zero point offset after being used for a period of time, resulting in inaccurate measurement, and it is difficult for the device to perform self-inspection on the temperature sensor; at the same time, the deformation of the expansion joint in the substation is mainly determined by an image acquisition device, and the real-time photos of the expansion joint in the substation are compared with the standard photos of the expansion joint; if there is a large difference in shape and size between the real-time photos of the expansion joint and the standard photos of the expansion joint, it is possible that the expansion joint in the substation may be leaking or the internal components may be operating abnormally; however, in actual use, the deformation of the expansion joint is affected by many factors such as temperature, wind speed, and sunshine conditions. It is difficult to determine whether the expansion joint in the substation has abnormal deformation by comparing a single variable; and if the temperature sensor is inaccurate, it is difficult to select the corresponding standard photos for comparison.

[0005] Based on this, the present invention designs a substation auxiliary monitoring device and method thereof to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a substation auxiliary monitoring device and method thereof.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An auxiliary monitoring device for a substation, comprising a patrol vehicle, a self-testing temperature detection mechanism, an expansion joint expansion amount detection device, and a distance measurement control mechanism;

[0009] The inspection trolley is fixedly equipped with a humidity sensor, a self-testing temperature detection mechanism, an expansion joint expansion and contraction detection device and a distance measurement control mechanism;

[0010] The self-testing temperature detection mechanism includes a multi-point temperature detection module and a self-test module. The patrol trolley is equipped with a multi-point temperature detection module for detecting the temperature of multiple locations, and the patrol trolley is equipped with a self-test module for performing self-test on the multi-point temperature detection module; the multi-point temperature detection module is connected to the self-test module;

[0011] The distance measurement comparison mechanism includes a comparison deformation module and a deformation detection module. The comparison deformation module is installed on the inspection vehicle, and the deformation detection module is installed on the inspection vehicle to detect the deformation amount of the comparison deformation module.

[0012] Furthermore, the multi-point temperature detection module includes a multi-probe temperature sensor, a detection probe 1, a detection probe 2, a self-test probe and a follow-up module. The multi-probe temperature sensor is fixedly installed on the inspection vehicle. The multi-probe temperature sensor is provided with a detection probe 1 for monitoring the ambient temperature, a detection probe 2 for monitoring the temperature of the control deformation module and a self-test probe for self-test. The multi-probe temperature sensor is electrically connected to the detection probe 1, the detection probe 2 and the self-test probe respectively; the multi-probe temperature sensor is installed with a follow-up module for supporting the detection probe 2.

[0013] Furthermore, the follower module includes a mounting frame, a guide rod and a follower moving block. The mounting frame is fixedly mounted on the multi-probe temperature sensor, the guide rod is fixedly mounted on the mounting frame, and the follower moving block is slidingly connected to the guide rod; one end of the detection probe 2 is hinged to the follower moving block; a torsion spring is sleeved on the hinge axis of the detection probe 2 and the follower moving block, and the two elastic feet of the torsion spring are respectively in contact with the detection probe 2 and the follower moving block.

[0014] Furthermore, the self-inspection module includes a first insulation box, a heater, a second insulation box and an indication module. The first insulation box is fixedly installed on the inspection vehicle, and the heater is fixedly installed on the inner bottom of the first insulation box; the second insulation box is fixedly installed on the upper side of the first insulation box; the indication module is installed on the second insulation box; the first insulation box is filled with liquid; the self-inspection probe is fixedly installed on the second insulation box, and the self-inspection probe passes through the second insulation box.

[0015] Furthermore, the indication module includes an installation tube, an elastic sheet, a pressure plate and a pressure sensor. The installation tube is fixedly installed on the top of the second insulation box, and the elastic sheet is fixedly installed in the middle of the installation tube; the pressure plate is fixedly installed on the upper side of the elastic sheet; and the pressure sensor is fixedly installed on the top of the installation tube.

[0016] Further, the control deformation module comprises a fixing frame, a self-checking expansion joint, a moving support block and a guide rail, the fixing frame is fixedly installed on the inspection trolley, one end of the self-checking expansion joint is fixedly connected with the fixing frame, the other end of the self-checking expansion joint is fixedly installed with the moving support block, the guide rail is fixedly installed on the inspection trolley, and the moving support block is limitingly and slidably connected with the guide rail; the detection probe two is in contact with the self-checking expansion joint; the self-checking expansion joint is filled with a liquid consistent with the liquid in the expansion joint of the transformer substation.

[0017] Further, the deformation detection module comprises a connecting module and a measuring module, the measuring module is installed on the inspection trolley, and the connecting module is installed on the moving support block.

[0018] Further, the measuring module comprises an installation column, a conductive wire and a multimeter, the installation column is fixedly installed on the inspection trolley, the conductive wire is wound on the installation column, and a fixed terminal post is fixedly installed at the end of the installation column; one end of the conductive wire is fixedly connected with the fixed terminal post; the multimeter is fixedly installed on the inspection trolley; and the fixed terminal post is electrically connected with the multimeter.

[0019] Further, the connecting module comprises a floating plate, a slide rod, a spring and a conductive block, the slide rod is fixedly installed on the floating plate in a symmetrical manner, the slide rod is limitingly and slidably connected with the moving support block, and the spring is arranged on the slide rod in a sleeving mode; one end of the spring is fixedly connected with the floating plate, and the other end of the spring is fixedly connected with the moving support block; the conductive block for contacting with the conductive wire is fixedly installed on the floating plate, and the conductive block is electrically connected with the multimeter.

[0020] In order to better achieve the purpose of the present application, the present application also provides a use method of the transformer substation auxiliary monitoring device, which comprises the following steps:

[0021] Step one: the inspection trolley moves in the transformer substation, the humidity in the transformer substation is monitored through the humidity sensor, the temperature in the transformer substation is monitored through the multi-point temperature detection module, and the multi-point temperature detection module is self-checked through the self-checking module;

[0022] Step two: the expansion joint expansion amount detection device is used for monitoring the expansion amount of the expansion joint in the transformer substation, the control deformation module has a certain amount of change in different temperature and humidity environments, and the change of the control deformation module on the inspection trolley is monitored through the deformation detection module;

[0023] Step three: the deformation amount of the control deformation module is compared with the expansion amount of the expansion joint in the transformer substation monitored by the expansion joint expansion amount detection device, if the expansion amount of the expansion joint in the transformer substation is consistent with the deformation amount of the control deformation module, the expansion amount of the expansion joint in the transformer substation is the deformation caused by the natural environment, and if the expansion amount of the expansion joint in the transformer substation is obviously greater than the deformation amount of the control deformation module, the expansion joint in the transformer substation has abnormal deformation, and at this time, the electrical elements in the expansion joint of the transformer substation have an abnormality.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the humidity in the substation is monitored by the humidity sensor on the inspection cart; the temperature in the substation is monitored by the multi-point temperature detection module; the multi-point temperature detection module is self-checked by the self-check module, so as to timely detect the failure of the multi-point temperature detection module; it is avoided that when the multi-point temperature detection module fails, it is not discovered in time, resulting in the failure to monitor the temperature conditions in the substation in time; the expansion joint expansion and contraction detection device monitors the expansion joint expansion and contraction changes in the substation, and at the same time, the control deformation module has a certain amount of changes in different temperature and humidity environments, and the deformation detection module monitors the changes of the control deformation module on the inspection cart; then the deformation of the control deformation module is compared with the expansion joint expansion and contraction detection device of the substation. If the expansion joint expansion and contraction of the substation is consistent with the deformation of the control deformation module, the expansion joint expansion and contraction of the substation is caused by adapting to the natural environment. If the expansion joint expansion and contraction of the substation is significantly greater than the deformation of the control deformation module, the expansion joint in the substation is abnormally deformed, and at this time, the electrical components in the expansion joint of the substation are abnormal. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0026] Figure 1 A three-dimensional substation auxiliary monitoring device of the present invention Figure 1 ;

[0027] Figure 2 This is a front view of a substation auxiliary monitoring device according to the present invention;

[0028] Figure 3 A three-dimensional substation auxiliary monitoring device of the present invention Figure 2 ;

[0029] Figure 4 A three-dimensional substation auxiliary monitoring device of the present invention Figure 3 ;

[0030] Figure 5 To follow Figure 2 A three-dimensional diagram after removing part of the structure in the AA direction;

[0031] Figure 6 for Figure 1 Enlarged view of point B in the middle;

[0032] Figure 7 For Figure 5 Enlarged view at C;

[0033] Figure 8 For Figure 3 Enlarged view at D.

[0034] The reference signs in the figures respectively represent:

[0035] 1, inspection trolley; 11, humidity sensor; 2, self-checking temperature detection mechanism; 21, multi-point temperature detection module; 211, multi-probe temperature sensor; 212, detection probe one; 213, detection probe two; 214, self-checking probe; 215, mounting rack; 216, guide rod; 217, follow-up moving block; 22, self-checking module; 221, first heat preservation box; 222, heater; 223, second heat preservation box; 224, mounting cylinder; 225, elastic sheet; 226, pressing plate; 227, pressure sensor; 3, expansion joint expansion amount detection device; 31, intelligent camera; 32, laser range finder; 4, distance measuring and checking mechanism; 41, checking deformation module; 411, fixed rack; 412, self-checking expansion joint; 413, moving support block; 414, guide rail; 42, deformation detection module; 421, mounting column; 422, conductive wire; 423, floating plate; 424, sliding rod; 425, spring; 426, conductive block; 427, multimeter. DETAILED DESCRIPTION

[0036] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0037] In the following description, “left”, “right”, “front”, “back”, “up”, and “down” are oriented in the perspective of the front view.

[0038] Embodiment one: in some embodiments, referring to the accompanying drawings of the specification Figure 1-Figure 3 A substation auxiliary monitoring device, comprising an inspection trolley 1, a self-checking temperature detection mechanism 2, an expansion joint expansion amount detection device 3, and a distance measuring and checking mechanism 4.

[0039] The humidity sensor 11 is fixedly installed on the inspection trolley 1, and the self-checking temperature detection mechanism 2, the expansion joint expansion amount detection device 3, and the distance measuring and checking mechanism 4 are installed on the inspection trolley 1.

[0040] As Figure 2 As shown, the self-testing temperature detection mechanism 2 includes a multi-point temperature detection module 21 and a self-testing module 22. The inspection vehicle 1 is equipped with a multi-point temperature detection module 21 for detecting the temperature of multiple locations, and the inspection vehicle 1 is equipped with a self-testing module 22 for performing self-test on the multi-point temperature detection module 21; the multi-point temperature detection module 21 is connected to the self-testing module 22;

[0041] like Figure 3 As shown, the distance measurement control mechanism 4 includes a control deformation module 41 and a deformation detection module 42 . The control deformation module 41 is installed on the inspection vehicle 1 , and the deformation detection module 42 for detecting the deformation amount of the control deformation module 41 is installed on the inspection vehicle 1 .

[0042] In this embodiment, when the substation auxiliary monitoring device is working normally, the inspection vehicle 1 drives the multi-point temperature detection module 21, the self-test module 22, the expansion joint expansion and contraction detection device 3, the comparison deformation module 41 and the deformation detection module 42 to move in the substation, and the humidity in the substation is monitored by the humidity sensor 11 on the inspection vehicle 1; the temperature in the substation is monitored by the multi-point temperature detection module 21;

[0043] The self-test module 22 performs self-test on the multi-point temperature detection module 21, thereby timely discovering the failure of the multi-point temperature detection module 21; thus avoiding the failure to timely discover the failure of the multi-point temperature detection module 21, resulting in the failure to timely monitor the temperature conditions in the substation;

[0044] The expansion joint expansion amount detection device 3 is used to monitor the expansion joint expansion amount change in the substation. At the same time, the control deformation module 41 has a certain amount of change in different temperature and humidity environments. The deformation detection module 42 is used to monitor the change of the control deformation module 41 on the inspection vehicle 1. Then, the deformation amount of the control deformation module 41 is compared with the expansion joint expansion amount in the substation monitored by the expansion joint expansion amount detection device 3. If the expansion amount of the expansion joint in the substation is consistent with the deformation amount of the control deformation module 41, the expansion joint in the substation is a deformation caused by adapting to the natural environment. If the expansion amount of the expansion joint in the substation is significantly greater than the deformation amount of the control deformation module 41, then the expansion joint in the substation is abnormally deformed, and at this time, there is an abnormality in the electrical components in the expansion joint of the substation.

[0045] At the same time, by comparing the setting of the deformation module 41, when the multi-point temperature detection module 21 fails such as zero point offset, it can still be determined by comparison whether the substation expansion joint has abnormal deformation.

[0046] Embodiment 2: In some embodiments, as a preferred embodiment of the present invention, as Figure 4-Figure 7As shown, the multi-point temperature detection module 21 includes a multi-probe temperature sensor 211, a detection probe 1 212, a detection probe 2 213, a self-test probe 214 and a follow-up module. The multi-probe temperature sensor 211 is fixedly installed on the inspection vehicle 1. The multi-probe temperature sensor 211 is provided with a detection probe 1 212 for monitoring the ambient temperature, a detection probe 2 213 for monitoring the temperature of the control deformation module 41 and a self-test probe 214 for self-test. The multi-probe temperature sensor 211 is electrically connected to the detection probe 1 212, the detection probe 2 213 and the self-test probe 214 respectively; the multi-probe temperature sensor 211 is installed with a follow-up module for supporting the detection probe 2 213;

[0047] The follower module includes a mounting frame 215, a guide rod 216 and a follower moving block 217. The mounting frame 215 is fixedly mounted on the multi-probe temperature sensor 211. The guide rod 216 is fixedly mounted on the mounting frame 215. The follower moving block 217 is slidingly connected to the guide rod 216. One end of the second detection probe 213 is hinged to the follower moving block 217. A torsion spring is sleeved on the hinge axis of the second detection probe 213 and the follower moving block 217. The two elastic legs of the torsion spring are respectively in contact with the second detection probe 213 and the follower moving block 217.

[0048] The self-test module 22 includes a first insulation box 221, a heater 222, a second insulation box 223 and an indication module. The first insulation box 221 is fixedly mounted on the inspection vehicle 1, and the heater 222 is fixedly mounted on the inner bottom of the first insulation box 221; the second insulation box 223 is fixedly mounted on the upper side of the first insulation box 221; the indication module is mounted on the second insulation box 223; the first insulation box 221 is filled with liquid; the self-test probe 214 is fixedly mounted on the second insulation box 223, and the self-test probe 214 passes through the second insulation box 223;

[0049] The liquid in the first insulation box 221 can be set to acetone, water or ethanol;

[0050] The indicator module includes a mounting tube 224, an elastic sheet 225, a pressure plate 226 and a pressure sensor 227. The mounting tube 224 is fixedly mounted on the top of the second heat preservation box 223. The elastic sheet 225 is fixedly mounted in the middle of the mounting tube 224; the pressure plate 226 is fixedly mounted on the upper side of the elastic sheet 225; and the pressure sensor 227 is fixedly mounted on the top of the mounting tube 224.

[0051] like Figure 4 As shown, the expansion joint expansion amount detection device 3 includes an intelligent camera 31 and a laser rangefinder 32. The inspection vehicle 1 is fixedly installed with the intelligent camera 31 and the laser rangefinder 32 for detecting the length of the expansion joint in the substation;

[0052] like Figure 4 and Figure 8 As shown, the control deformation module 41 includes a fixed frame 411, a self-inspection expansion joint 412, a mobile support block 413 and a guide rail 414. The fixed frame 411 is fixedly mounted on the inspection trolley 1, one end of the self-inspection expansion joint 412 is fixedly connected to the fixed frame 411, and the other end of the self-inspection expansion joint 412 is fixedly mounted with a mobile support block 413. The guide rail 414 is fixedly mounted on the inspection trolley 1, and the mobile support block 413 is limitedly slidably connected to the guide rail 414; the detection probe 213 is in contact with the self-inspection expansion joint 412; the self-inspection expansion joint 412 is filled with a liquid consistent with that in the substation expansion joint;

[0053] The deformation detection module 42 includes a connection module and a measurement module. The measurement module is installed on the inspection vehicle 1, and the connection module is installed on the mobile support block 413.

[0054] The measuring module includes a mounting post 421, a conductive wire 422, and a multimeter 427. The mounting post 421 is fixedly mounted on the inspection vehicle 1. The conductive wire 422 is wound around the mounting post 421. A fixed terminal is fixedly mounted on the end of the mounting post 421. One end of the conductive wire 422 is fixedly connected to the fixed terminal. The multimeter 427 is fixedly mounted on the inspection vehicle 1. The fixed terminal is electrically connected to the multimeter 427.

[0055] The connection module includes a floating plate 423, a sliding rod 424, a spring 425 and a conductive block 426. The sliding rod 424 is symmetrically fixedly installed on the floating plate 423, and the sliding rod 424 is slidingly connected to the movable support block 413. A spring 425 is provided on the outer sleeve of the sliding rod 424; one end of the spring 425 is fixedly connected to the floating plate 423, and the other end of the spring 425 is fixedly connected to the movable support block 413; a conductive block 426 for contacting the conductive wire 422 is fixedly installed on the floating plate 423, and the conductive block 426 is electrically connected to the multimeter 427.

[0056] The multimeter 427, the multi-probe temperature sensor 211, the humidity sensor 11, the smart camera 31 and the laser rangefinder 32 are all commercially available mature equipment;

[0057] When in use, the laser rangefinder 32 generally uses the pulse method and the phase method to measure distance. In the pulse method, the laser emitted by the rangefinder is reflected by the object being measured and then received by the rangefinder. The rangefinder also records the time it takes for the laser to travel back and forth. Half the product of the speed of light and the round-trip time is the distance between the rangefinder and the object being measured. The phase method modulates the phase of the laser and measures the phase difference of the reflected laser to obtain the distance.

[0058] Based on existing computer vision technology, the smart camera 31 captures video images of objects through a remote camera and uses image processing algorithms to identify and measure objects in the images.

[0059] In this embodiment, when the self-test temperature detection mechanism 2, the expansion joint expansion amount detection device 3 and the distance measurement control mechanism 4 are working normally, the inspection trolley 1 drives the device to move in the substation. During normal use, the humidity in the substation is monitored by the humidity sensor 11, the ambient temperature in the substation is monitored by the detection probe 1 212, and the temperature of the self-test expansion joint 412 is detected by the detection probe 2 213; the length of the expansion joint in the substation is monitored by the smart camera 31 and the laser rangefinder 32, and it is compared with the original length of the expansion joint to calculate the expansion amount of the expansion joint;

[0060] After a period of use, the liquid in the first heat-insulating box 221 is heated by the heater 222, causing the liquid in the first heat-insulating box 221 to boil and vaporize, thereby increasing the air pressure in the first heat-insulating box 221 and the heater 222. When the air pressure in the heater 222 increases, the elastic sheet 225 in the mounting tube 224 on the top of the heater 222 is deformed, thereby driving the pressure plate 226 in the elastic sheet 225 to move until the pressure plate 226 squeezes the pressure sensor 227, at which time the heater 222 stops heating; and the temperature in the second heat-insulating box 223 is detected by the self-test probe 214. If the temperature detected by the self-test probe 214 deviates from the boiling point of the liquid in the first heat-insulating box 221 by more than 5 degrees Celsius, it indicates that the multi-probe temperature sensor 211 is faulty.

[0061] The self-test expansion joint 412 is deformed by the ambient temperature, thereby driving the movable support block 413 to move horizontally under the limiting action of the guide rail 414. The movable support block 413 drives the slide bar 424, the spring 425 and the floating plate 423 to move horizontally, thereby driving the conductive block 426 to move horizontally; the conductive block 426 is brought into contact with the conductive wire 422 at different positions; thereby changing the length of the conductive wire 422 connected to the circuit; the length of the conductive wire 422 connected to the circuit is calculated by the change in the reading of the multimeter 427; thereby judging the position of the conductive block 426; judging the positions of the floating plate 423, the slide bar 424 and the movable support block 413 by the relative positions of the conductive block 426 and the conductive wire 422, and further judging the deformation of the self-test expansion joint 412;

[0062] Compare the deformation of the self-test expansion joint 412 with the expansion and contraction of the expansion joint. If the deformation of the self-test expansion joint 412 is consistent with the expansion and contraction of the expansion joint, the electrical components in the expansion joint are operating normally; if the deformation of the self-test expansion joint 412 is inconsistent with the expansion and contraction of the expansion joint, the expansion joint in the substation is abnormal.

[0063] Embodiment 3: In some embodiments, as Figures 1-8 As shown, as a preferred embodiment of the present invention, a method for using a substation auxiliary monitoring device includes the following steps:

[0064] Step 1: The inspection vehicle 1 drives the device to move in the substation, monitors the humidity in the substation through the humidity sensor 11, monitors the ambient temperature in the substation through the detection probe 1 212, and detects the temperature of the self-inspection expansion joint 412 through the detection probe 2 213; monitors the length of the expansion joint in the substation through the intelligent camera 31 and the laser rangefinder 32, and compares it with the original length of the expansion joint to calculate the expansion amount of the expansion joint; starts the heater 222 to heat the liquid in the first insulation box 221, so that the liquid in the first insulation box 221 boils and vaporizes, thereby increasing the first The air pressure in the heat preservation box 221 and the heater 222 increases. When the air pressure in the heater 222 increases, the elastic piece 225 in the mounting tube 224 at the top of the heater 222 is deformed, thereby driving the pressure plate 226 in the elastic piece 225 to move until the pressure plate 226 squeezes the pressure sensor 227, at which time the heater 222 stops heating; and the temperature in the second heat preservation box 223 is detected by the self-test probe 214. If the temperature detected by the self-test probe 214 deviates from the boiling point of the liquid in the first heat preservation box 221 by more than 5 degrees Celsius, it indicates that the multi-probe temperature sensor 211 is faulty.

[0065] Step 2: Self-check expansion joint 412 is affected by ambient temperature and deformed, thereby driving movable support block 413 to move horizontally under the limiting action of guide rail 414. Movable support block 413 drives slide bar 424, spring 425 and floating plate 423 to move horizontally, thereby driving conductive block 426 to move horizontally, so that conductive block 426 contacts conductive wire 422 at different positions, thereby changing the length of conductive wire 422 connected to the circuit.

[0066] Step three: calculate the length of the conductive wire 422 connected to the circuit through the change in the reading of the multimeter 427; thereby determine the position of the conductive block 426; determine the positions of the floating plate 423, the slide rod 424 and the movable support block 413 through the relative positions of the conductive block 426 and the conductive wire 422, and then determine the deformation of the self-test expansion joint 412; compare the deformation of the self-test expansion joint 412 with the expansion and contraction of the expansion joint. If the deformation of the self-test expansion joint 412 is consistent with the expansion and contraction of the expansion joint, the electrical components in the expansion joint are operating normally; if the deformation of the self-test expansion joint 412 is inconsistent with the expansion and contraction of the expansion joint, the expansion joint in the substation is abnormal.

[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A substation auxiliary monitoring device, comprising a patrol vehicle (1), a self-testing temperature detection mechanism (2), an expansion joint expansion amount detection device (3) and a distance measurement control mechanism (4), characterized in that: The inspection trolley (1) is fixedly mounted with a humidity sensor (11), and the inspection trolley (1) is also mounted with a self-checking temperature detection mechanism (2), an expansion joint expansion and contraction detection device (3), and a distance measurement control mechanism (4); The self-testing temperature detection mechanism (2) comprises a multi-point temperature detection module (21) and a self-testing module (22); the patrol vehicle (1) is provided with the multi-point temperature detection module (21) for detecting the temperature of multiple positions; the patrol vehicle (1) is provided with the self-testing module (22) for performing self-test on the multi-point temperature detection module (21); the multi-point temperature detection module (21) is connected to the self-testing module (22); The distance measurement comparison mechanism (4) comprises a comparison deformation module (41) and a deformation detection module (42); the comparison deformation module (41) is installed on the inspection vehicle (1); and the deformation detection module (42) for detecting the deformation amount of the comparison deformation module (41) is installed on the inspection vehicle (1).

2. The substation auxiliary monitoring device according to claim 1, characterized in that: The multi-point temperature detection module (21) comprises a multi-probe temperature sensor (211), a detection probe 1 (212), a detection probe 2 (213), a self-test probe (214) and a follow-up module. The multi-probe temperature sensor (211) is fixedly mounted on the inspection vehicle (1). The multi-probe temperature sensor (211) is provided with a detection probe 1 (212) for monitoring the ambient temperature, a detection probe 2 (213) for monitoring the temperature of the control deformation module (41) and a self-test probe (214) for self-test. The multi-probe temperature sensor (211) is electrically connected to the detection probe 1 (212), the detection probe 2 (213) and the self-test probe (214) respectively. The follow-up module for supporting the detection probe 2 (213) is mounted on the multi-probe temperature sensor (211).

3. The substation auxiliary monitoring device according to claim 2, characterized in that: The follower module comprises a mounting frame (215), a guide rod (216) and a follower moving block (217); the mounting frame (215) is fixedly mounted on the multi-probe temperature sensor (211); the guide rod (216) is fixedly mounted on the mounting frame (215); the follower moving block (217) is connected to the guide rod (216) in a limited sliding manner; one end of the second detection probe (213) is hinged to the follower moving block (217); a torsion spring is sleeved on the hinge shaft between the second detection probe (213) and the follower moving block (217); two elastic legs of the torsion spring are respectively in contact with the second detection probe (213) and the follower moving block (217).

4. The substation auxiliary monitoring device according to claim 3, characterized in that: The self-test module (22) comprises a first heat-insulating box (221), a heater (222), a second heat-insulating box (223) and an indication module. The first heat-insulating box (221) is fixedly mounted on the inspection vehicle (1); the heater (222) is fixedly mounted on the inner bottom of the first heat-insulating box (221); the second heat-insulating box (223) is fixedly mounted on the upper side of the first heat-insulating box (221); the indication module is mounted on the second heat-insulating box (223); the first heat-insulating box (221) is filled with liquid; and the self-test probe (214) is fixedly mounted on the second heat-insulating box (223), and the self-test probe (214) passes through the second heat-insulating box (223).

5. The substation auxiliary monitoring device according to claim 4, characterized in that: The indicating module comprises a mounting tube (224), an elastic sheet (225), a pressure plate (226) and a pressure sensor (227); the mounting tube (224) is fixedly mounted on the top of the second heat-insulating box (223); the elastic sheet (225) is fixedly mounted on the middle of the mounting tube (224); the pressure plate (226) is fixedly mounted on the upper side of the elastic sheet (225); and the pressure sensor (227) is fixedly mounted on the top of the mounting tube (224).

6. The substation auxiliary monitoring device according to claim 2, characterized in that: The comparison deformation module (41) comprises a fixed frame (411), a self-test expansion joint (412), a movable support block (413) and a guide rail (414); the fixed frame (411) is fixedly mounted on the inspection trolley (1); one end of the self-test expansion joint (412) is fixedly connected to the fixed frame (411); the other end of the self-test expansion joint (412) is fixedly mounted with the movable support block (413); the guide rail (414) is fixedly mounted on the inspection trolley (1); the movable support block (413) and the guide rail (414) are limitedly slidably connected; the second detection probe (213) is in contact with the self-test expansion joint (412); and the self-test expansion joint (412) is filled with a liquid consistent with that in the expansion joint of the substation.

7. The substation auxiliary monitoring device according to claim 6, characterized in that: The deformation detection module (42) comprises a connection module and a measurement module, wherein the measurement module is mounted on the inspection vehicle (1) and the connection module is mounted on the mobile support block (413).

8. The substation auxiliary monitoring device according to claim 7, characterized in that: The measuring module comprises a mounting post (421), a conductive wire (422) and a multimeter (427); the mounting post (421) is fixedly mounted on the inspection trolley (1); the conductive wire (422) is wound around the mounting post (421); a fixed terminal is fixedly mounted on the end of the mounting post (421); one end of the conductive wire (422) is fixedly connected to the fixed terminal; the multimeter (427) is fixedly mounted on the inspection trolley (1); and the fixed terminal is electrically connected to the multimeter (427).

9. The substation auxiliary monitoring device according to claim 8, characterized in that: The connection module comprises a floating plate (423), a sliding rod (424), a spring (425) and a conductive block (426); the sliding rod (424) is symmetrically fixedly installed on the floating plate (423); the sliding rod (424) is limitedly slidably connected to the movable support block (413); a spring (425) is provided on the outer sleeve of the sliding rod (424); one end of the spring (425) is fixedly connected to the floating plate (423), and the other end of the spring (425) is fixedly connected to the movable support block (413); a conductive block (426) for contacting the conductive wire (422) is fixedly installed on the floating plate (423); the conductive block (426) is electrically connected to the multimeter (427).

10. A method of use, using the substation auxiliary monitoring device according to claim 9, characterized in that: The following steps are involved: Step 1: The inspection vehicle (1) moves in the substation, and monitors the humidity in the substation through the humidity sensor (11); monitors the temperature in the substation through the multi-point temperature detection module (21); and performs self-test on the multi-point temperature detection module (21) through the self-test module (22); Step 2: The expansion joint expansion amount in the substation is monitored by the expansion joint expansion amount detection device (3); when the control deformation module (41) has a certain amount of change in different temperature and humidity environments, the change of the control deformation module (41) on the inspection vehicle (1) is monitored by the deformation detection module (42); Step 3: Compare the deformation of the control deformation module (41) with the expansion and contraction of the expansion joint in the substation monitored by the expansion joint expansion and contraction detection device (3). If the expansion and contraction of the expansion joint in the substation is consistent with the deformation of the control deformation module (41), the expansion and contraction of the expansion joint in the substation is a deformation caused by adapting to the natural environment. If the expansion and contraction of the expansion joint in the substation is significantly greater than the deformation of the control deformation module (41), the expansion joint in the substation has abnormal deformation, and at this time, there is an abnormality in the electrical components in the expansion joint of the substation.

Images