CN110542876B - On-line monitoring device and state detection method for metering loop of transformer substation - Google Patents
On-line monitoring device and state detection method for metering loop of transformer substation Download PDFInfo
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- CN110542876B CN110542876B CN201910951160.7A CN201910951160A CN110542876B CN 110542876 B CN110542876 B CN 110542876B CN 201910951160 A CN201910951160 A CN 201910951160A CN 110542876 B CN110542876 B CN 110542876B
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 95
- 230000005856 abnormality Effects 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 8
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The application provides an online monitoring device and a state detection method for a metering loop of a transformer substation, and belongs to the technical field of power system state monitoring and overhaul. The technical proposal is as follows: the device comprises a track and a track car which are arranged on the front side of a transformer substation metering cabinet, wherein a camera and a sampling assembly are arranged below the track car; the image acquisition end of camera sets up towards the panel board on the metering cabinet, corresponds every instrument on the metering cabinet and corresponds and offer the sampling jack, and sampling jack and the inside metering circuit electricity of metering cabinet are connected, and on the sampling subassembly, correspond the sampling jack and be provided with the inserted bar. The beneficial effects of the application are as follows: according to the application, the on-line monitoring work of the metering loop is realized in an unattended operation mode, and the metering cabinet instrument and the metering loop can be monitored on line periodically or circularly according to actual conditions. The information of the instrument and the metering loop is collected, so that whether the metering loop is in a good working state can be judged by combining the information with the information by a human or an upper computer.
Description
Technical Field
The invention relates to the technical field of power system state monitoring and overhaul, in particular to a transformer substation metering loop on-line monitoring device and a state detection method.
Background
At present, in the large-scale popularization and construction of intelligent substations, the traditional primary and secondary equipment and the substation framework are greatly broken through and developed, and particularly, the application of electronic transformers and network equipment brings about profound revolution to digital secondary systems. Metering equipment has also evolved from traditional electric energy meters to all-fiber digital electric energy meters currently in widespread use. With the rapid development of national economy and power grid scale, the safety operation of the power grid has higher and higher requirements on the safety and stability of secondary equipment of a transformer substation, and the condition maintenance of the secondary equipment including metering equipment is realized, so that the system is a trend of the maintenance of an intelligent transformer substation in the future.
The state monitoring device of the metering equipment is to establish a set of monitoring system for determining the actual state of the metering equipment by utilizing the data acquisition, uploading and network communication functions of the intelligent equipment such as a merging unit, a digital electric energy meter and the like so as to evaluate the metering precision of the metering equipment in real time and diagnose whether the metering loop has abnormality to be overhauled. The state maintenance of the metering loop is a necessary requirement for the development of power grids and economy, the power supply reliability is improved, and the availability of equipment can be improved through targeted maintenance.
Disclosure of Invention
The invention aims to provide an online monitoring device and a state detection method for a metering loop of a transformer substation.
The invention is realized by the following measures: the on-line monitoring device for the metering loop of the transformer substation comprises a track arranged on the front side of a metering cabinet of the transformer substation and a rail car which is in sliding connection with the track, wherein a camera and a sampling assembly are arranged below the rail car; the image acquisition end of camera sets up towards the panel board on the metering cabinet, correspond every instrument on the metering cabinet and correspond and offer sampling jack, sampling jack and the inside metering circuit electricity of metering cabinet are connected, and sampling subassembly is through being connected the back with sampling jack, with the metering circuit intercommunication of metering cabinet, realizes the sampling test to metering circuit, sampling subassembly is including corresponding the inserted bar that sampling jack set up. The inserted link and the sampling jack are internally provided with corresponding metal contacts.
Preferably, a main control module is arranged in the railway vehicle, and the input end of the main control module is connected with the output ends of the camera and the sampling assembly through a filter circuit respectively;
and the output end of the main control module is respectively connected with the storage module, the buzzer and the wireless module. If abnormality is detected, the abnormality is fed back to the upper computer through the wireless module, and a warning is sent out on site through the buzzer.
Preferably, the wireless module uses a 2.4G wireless communication mode.
Preferably, an amplifying circuit and an integrating circuit are sequentially arranged between the output end of the sampling assembly and the input end of the main control module.
Preferably, the track is fixedly connected with the metering cabinet through a track bracket and a track hook;
the track bracket comprises a bottom plate attached to the outer surface of the metering cabinet, wherein the bottom plate can be mounted in an M-type glue bonding mode or is fixedly connected with the outer side surface of the bottom plate by a positioning bolt, a fixed block is fixedly connected with the outer side surface of the bottom plate, a horizontal screw hole is formed in the fixed block, and the fixed block is in threaded connection with a bracket screw rod through the horizontal screw hole;
The rail hook is 匚 -shaped, flanges are arranged on the outer sides of the horizontal two ends of the rail hook, the two flanges are arranged towards the middle of the rail hook, and the rail is inserted into the rail hook; an upper connecting block and a lower connecting block are arranged on one side, facing the metering cabinet, of the track hook, and the lower connecting block is rotatably arranged in the middle of the track hook; the top of the track hook is provided with a boss, and the upper connecting block is rotationally connected with the boss;
Threaded holes corresponding to the support screw rods are formed in the upper connecting block and the lower connecting block.
Through track support and track couple in this scheme, what can be adaptive lets the track support set up at the lateral wall or the top of measurement cabinet, because in the actual conditions, often there is the condition that a plurality of measurement cabinets put side by side, under this condition, then can adopt to set up the track support of tip on the measurement cabinet lateral wall, set up the track support at the middle part at the top of measurement cabinet, combine fixedly through the support of different positions, can make the track more stable.
Preferably, the track is kept away from one side of measuring cabinet and is offered horizontal logical groove, leads to the groove and is the cuboid groove, and leads to the upper and lower both ends in the groove outside and set up the spacing turn-ups that prevent that the railcar from deviating from, and the longitudinal section of leading to the groove is horizontal "protruding" font, the railcar is including the gyro wheel that sets up towards measuring cabinet one side, arranges about the gyro wheel and sets up two, and the wheel face of two gyro wheels pastes mutually, and about two the wheel face of gyro wheel respectively with the upper and lower medial surface of leading to the groove pastes mutually.
Preferably, one of the rollers is a driving wheel, and a wheel shaft of the driving wheel is linked with a roller motor arranged on the rail car;
The roller is a rubber wheel.
In this form, one roller is used as a driving wheel, the other roller is used as a driven wheel, the driving wheel drives the driven wheel to rotate under the action of friction, and the two rollers move along the track through friction with the upper inner side surface and the lower inner side surface of the track.
Preferably, the upper part of the camera is vertically provided with a camera screw rod which is in threaded connection with the car body of the track car;
The upper side of the camera is also provided with a positioning rod, the axis of the positioning rod is parallel to the axis of the camera screw rod, and the positioning rod is in sliding connection with the car body of the railway car.
The camera shooting screw rod can be manually adjusted, or a motor driving mechanism is arranged on the rail car corresponding to the camera shooting screw rod.
Preferably, two sampling jacks corresponding to each instrument are arranged, and the sampling assembly comprises two parallel inserted bars; the side, far away from the metering cabinet, of the inserted link is provided with a push plate and a push rod in sequence, the inserted link is fixedly arranged on the push plate, the push rod is an electric push rod, and the main control module is electrically connected with the push rod to form a control loop;
The upper side of the sampling component is in sliding connection with the car body of the railway car through a connecting rod.
The connecting rod and the push rod can be screw rod type electric telescopic rods, the connecting rod can also use common smooth sliding rods, and the connecting rod can be locked by means of locking bolts after the position is manually adjusted.
Preferably, two spring balls are arranged on one side of the inserted link, facing the metering cabinet, and each spring ball is attached to the sensing end of one pressure sensor; the two spring balls are respectively arranged at two ends of the horizontal diameter of each inserted link; the pressure sensor is electrically connected with the main control module to form a feedback path, and the main control module is also electrically connected with the roller motor to form a control loop.
Preferably, on the track, a bump is arranged towards one side of the track car, a spring is arranged towards one side of the metering cabinet, the bump is connected with a power supply, the track car is provided with a metal sheet for charging, and a battery is arranged in the track car.
The rail car can also select the working mode that the electric wire is directly connected with the power supply to supply power, and only the electric wire of the rail car is ensured not to influence the movement of the car body.
Contact switches or proximity switches can be arranged on two sides of the moving direction of the rail car to control the moving area of the rail car.
The detection method of the transformer substation metering loop on-line monitoring device,
S1, a test line is led out of a metering loop of a metering cabinet, and the test line is reserved at sampling jacks at the outer side of the metering cabinet in a jack mode;
S2, a movable camera and a sampling assembly are arranged on the metering cabinet, the camera is arranged corresponding to the metering cabinet instrument, and the sampling assembly is arranged corresponding to the sampling jack;
s3, driving the camera and the sampling assembly to move and positioning an instrument and a sampling jack to be detected;
S4, the camera collects images of the instrument and uploads the images to the upper computer through the main control module; the sampling assembly uploads the upper computer through the main control module after completing sampling of the metering loop through the sampling jack;
S5, the main control module refers to the sampling result of the sampling circuit, and if abnormality occurs, the main control module gives a warning to the upper computer and drives the buzzer to give a warning; if no abnormality exists, the detection of the next group of meters and sampling jacks is continued.
Preferably, in the step S3, the positioning method of the sampling jack is that,
S301, the main control module drives the push rod to move towards the direction of the metering cabinet, and whether the end part of the inserting rod is contacted with the metering cabinet body is detected through a spring ball and a pressure sensor at the end part of the inserting rod;
s302, after the inserted link is confirmed to contact the cabinet body of the metering cabinet, the main control module drives the roller to move, and at the moment, the inserted link starts to translate;
s303, when one pressure sensor at the end part of one inserted link feeds back no pressure, the main control module reduces the rotating speed of the roller, and when the other pressure sensor of the inserted link feeds back no pressure, the inserted link is aligned with the sampling jack;
s304, the main control module drives the push rod to continue to insert the rod, and when the pressure sensor feeds back the pressure again to reach the set value, the insert rod is indicated to reach the working position.
The beneficial effects of the application are as follows: according to the application, the on-line monitoring work of the metering loop is realized in an unattended operation mode, and the metering cabinet instrument and the metering loop can be monitored on line periodically or circularly according to actual conditions. The information of the instrument and the metering loop is collected, so that whether the metering loop is in a good working state can be judged by combining the information with the information by a human or an upper computer. Through the monitoring form of the scheme, different metering parameters can be monitored according to actual demands through changing sampling parameters of the metering loop, and the monitoring form is not limited to a specific metering content. Through the transformation form of this scheme, can be applicable to most batch meter transformation.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a transformer substation metering circuit on-line monitoring device and a transformer substation metering cabinet provided by an embodiment of the invention.
Fig. 2 is a partial enlarged view of a of fig. 1.
Fig. 3 is an enlarged view of a track hook in accordance with an embodiment of the present invention.
Fig. 4 is a flowchart of a detection method according to an embodiment of the present invention.
Wherein, the reference numerals are as follows: 1. a track; 11. a track bracket; 111. a bottom plate; 112. a fixed block; 12. a track hook; 121. an upper connecting block; 122. a lower connecting block; 2. a rail car; 21. a roller; 3. a camera; 31. a camera screw rod; 4. a sampling assembly; 41. a rod; 42. a push rod; 5. sampling jack.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Referring to fig. 1 to 3, the on-line monitoring device for a metering loop of a transformer substation provided in this embodiment includes a track 1 disposed at a front side of a metering cabinet of the transformer substation, a rail car 2 slidably connected with the track 1, and a camera 3 and a sampling assembly 4 disposed below the rail car 2; the image acquisition end of the camera 3 is arranged towards an instrument panel on the metering cabinet, the metering cabinet is correspondingly provided with sampling jacks 5 corresponding to each instrument, the sampling jacks 5 are electrically connected with metering circuits inside the metering cabinet, after the sampling assembly is connected with the sampling jacks, the sampling assembly is communicated with the metering circuits of the metering cabinet, sampling test of the metering circuits is achieved, and the sampling assembly 4 comprises inserting rods 41 corresponding to the setting of the sampling jacks 5. The insert bar 41 and the sampling jack are internally provided with corresponding metal contacts.
The inside main control module that sets up of railcar 2, main control module's input is connected with the output of camera 3 and sampling subassembly 4 through a filter circuit respectively.
The output end of the main control module is respectively connected with the storage module, the buzzer and the wireless module. If abnormality is detected, the abnormality is fed back to the upper computer through the wireless module, and a warning is sent out on site through the buzzer.
The wireless module uses a 2.4G wireless communication mode. Because this scheme is the detection to the unit of measure, 2.4G wireless communication mode is to substation equipment, and its signal interference is less, and with regard to the data transmission volume of this scheme, 2.4G's communication speed can satisfy the demand.
An amplifying circuit and an integrating circuit are sequentially arranged between the output end of the sampling component 4 and the input end of the main control module; the arrangement of the amplifying circuit and the integrating circuit in the sampling circuit can be realized by means of the prior art, which is not essential to the present application and is not described in detail herein.
The track 1 is fixedly connected with the metering cabinet through a track bracket 11 and a track hook 12.
The track bracket 11 comprises a bottom plate 111 attached to the outer surface of the metering cabinet, the bottom plate 111 can be mounted by 3M adhesive, or is fixedly connected by positioning bolts, the outer side surface of the bottom plate 111 is fixedly connected with a fixed block 112, a horizontal screw hole is formed in the fixed block 112, and the fixed block is in threaded connection with a bracket screw 113 through the horizontal screw hole.
The rail hook 12 is of a 匚 -shaped structure, flanges are arranged on the outer sides of the two horizontal ends of the rail hook 12, the two flanges are arranged towards the middle of the rail hook, and the rail 1 is inserted into the rail hook 12; an upper connecting block and a lower connecting block are arranged on one side of the track hook 12 facing the metering cabinet, and the lower connecting block 122 is rotatably arranged in the middle of the track hook 12; a boss is arranged at the top of the track hook 12, and an upper connecting block 121 is rotationally connected with the boss;
Threaded holes corresponding to the bracket screw 113 are formed in the upper connection block 121 and the lower connection block 122.
Through track support 11 and track couple 12 in this scheme, what can be adaptive lets track support 11 set up at the lateral wall or the top of measurement cabinet, because in the actual conditions, often there is the condition that a plurality of measurement cabinets put side by side, under this condition, then can adopt to set up the track support 11 of tip on the measurement cabinet lateral wall, set up the track support 11 at the middle part at the top of measurement cabinet, combine fixedly through the support of different positions, can make track 1 more stable.
The track 1 is kept away from one side of measuring cabinet and has been seted up horizontal logical groove, leads to the groove and is the cuboid groove, and leads to the upper and lower both ends in the groove outside and set up the spacing turn-ups that prevent that the railcar from deviating from, and the longitudinal section of leading to the groove is horizontal "protruding" font, and railcar 2 includes the riser as the automobile body, and the riser sets up gyro wheel 21 towards one side of measuring cabinet, and gyro wheel 21 arranges from top to bottom and sets up two, and the tread of two gyro wheels 21 pastes mutually with the upper and lower medial surface of leading to the groove respectively.
One of the rollers 21 is a driving wheel, and the wheel shaft of the driving wheel is linked with a roller motor arranged on the vertical plate of the railway car 2.
The roller 21 is a rubber wheel.
In this form, one roller 21 is used as a driving wheel, the other roller 21 is used as a driven wheel, the driving wheel drives the driven wheel to rotate under the action of friction force, and the two rollers 21 move the railcar 2 along the track 1 by friction with the upper and lower inner sides of the track 1.
The upper portion of the camera 3 is vertically provided with a camera screw rod 31, and the camera screw rod 31 is in threaded connection with a car body of the railway car 2.
The upper side of the camera 3 is also provided with a positioning rod, the axis of the positioning rod is parallel to the axis of the camera screw rod 31, and the positioning rod is in sliding connection with the car body of the railway car 2.
The camera screw 31 can be manually adjusted, or a motor driving mechanism is arranged on the rail car 2 corresponding to the camera screw 31.
Two sampling jacks 5 corresponding to each instrument are arranged, and each sampling assembly 4 comprises two parallel inserted bars 41; one side of the inserted bar 41 far away from the metering cabinet is sequentially connected with a push plate and a push rod 42, the inserted bar 41 is fixedly arranged on the push plate, the push rod 42 is an electric push rod, and the main control module is electrically connected with the push rod 42 to form a control loop.
The upper side of the sampling assembly 4 is slidably connected to the body of the railcar 2 by a link 43.
The connecting rod 43 and the push rod 42 can be screw rod type electric telescopic rods, the connecting rod 43 can also use a common smooth slide rod, and the position is manually adjusted and then locked by means of a locking bolt.
Referring to fig. 4, the detection method of the transformer substation metering loop on-line monitoring device comprises the following steps:
s1, a test line is led out of a metering loop of a metering cabinet, and the test line is reserved at a sampling jack 5 at the outer side of the metering cabinet in a jack mode;
S2, a movable camera 3 and a sampling assembly 4 are arranged on the metering cabinet, the camera 3 is arranged corresponding to the metering cabinet instrument, and the sampling assembly 4 is arranged corresponding to the sampling jack 5;
s3, driving the camera 3 and the sampling assembly 4 to move and positioning an instrument and a sampling jack 5 which need to be detected;
S4, the camera 3 collects images of the instrument and uploads the images to the upper computer through the main control module; the sampling assembly 4 uploads the upper computer through the main control module after completing the sampling of the metering loop through the sampling jack 5; the sampling component 4 can be used for sampling parameters of the metering loop, such as current sampling, voltage sampling, etc., and can be replaced according to actual requirements, and for circuit sampling, the technology adopts the prior art scheme, and the scheme is not limited to a specific form.
S5, the main control module refers to the sampling result of the sampling circuit, if abnormality occurs, a warning signal is sent to the upper computer, and the buzzer is driven to warn; if there is no abnormality, the detection of the next set of meters and sampling jacks 5 is continued. For abnormality judgment, the abnormality can be judged according to the field requirement and different sampling data and a set threshold value, and if the threshold value is exceeded, the abnormality is judged.
Example 2
On the basis of embodiment 1, two spring balls are arranged on one side of the inserted link 41 facing the metering cabinet, and each spring ball is attached to the sensing end of one pressure sensor; two spring balls are respectively arranged at two ends of the horizontal diameter of each inserted link 41; the pressure sensor is electrically connected with the main control module to form a feedback path, and the main control module is also electrically connected with the roller motor to form a control loop.
In S3, the positioning method of the sampling jack 5 is that,
S301, a main control module drives a push rod 42 to move towards the direction of the metering cabinet, and whether the end part of the inserting rod 41 is contacted with the metering cabinet body is detected through a spring ball and a pressure sensor at the end part of the inserting rod 41;
s302, after confirming that the inserting rod 41 contacts the cabinet body of the metering cabinet, the main control module drives the roller 21 to move, and at the moment, the inserting rod 41 starts to translate;
S303, when one pressure sensor at the end part of one inserted link 41 feeds back no pressure, the main control module reduces the rotating speed of the roller 21, and when the other pressure sensor of the inserted link 41 feeds back no pressure, the inserted link is aligned with the sampling jack 5;
S304, the main control module drives the push rod 42 to continue to insert the rod 41, and when the pressure sensor feeds back the pressure again to reach the set value, the insert rod 41 is indicated to reach the working position.
Through the structure and the method of the embodiment, the device can realize the positioning of the inserted link 41 more quickly and stably in the positioning process.
Example 3
On the basis of embodiment 1 or 2, on track 1, the bump is set up towards one side of railcar 2, and the bump is provided with the spring towards measuring cabinet one side, and the bump is connected with the power, and railcar 2 corresponds the bump and is provided with the sheetmetal that is used as the charge, and railcar 2 is inside to be provided with the battery.
The rail car 2 can also select the working mode that the electric wire is directly connected with the power supply to supply power, and only the electric wire of the rail car 2 is ensured not to influence the movement of the car body.
Contact switches or proximity switches can be arranged on two sides of the moving direction of the railway car 2 to control the moving area of the railway car 2.
The purpose of this embodiment is to provide a power supply form for the rail car 2, and also to directly supply power to the rail car 2 by connecting a power line according to the field environment.
The technical features of the present invention that are not described in the present invention may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be within the scope of the present invention by those skilled in the art.
Claims (6)
1. The on-line monitoring device for the metering loop of the transformer substation is characterized by comprising a track (1) arranged on the front side of a metering cabinet of the transformer substation, a track car (2) in sliding connection with the track (1), and a camera (3) and a sampling assembly (4) are arranged below the track car (2); the image acquisition end of the camera (3) is arranged towards an instrument panel on the metering cabinet, a sampling jack (5) is correspondingly arranged on the metering cabinet corresponding to each instrument, the sampling jack (5) is electrically connected with a metering circuit in the metering cabinet, and the sampling assembly (4) comprises a plug rod (41) arranged corresponding to the sampling jack (5);
The track (1) is fixedly connected with the metering cabinet through a track bracket (11) and a track hook (12);
The track bracket (11) comprises a bottom plate (111) attached to the outer surface of the metering cabinet, the outer side surface of the bottom plate (111) is fixedly connected with a fixed block (112), a horizontal screw hole is formed in the fixed block (112), and the fixed block is in threaded connection with a bracket screw rod (113) through the horizontal screw hole;
The rail hook (12) is shaped like a Chinese character '匚', flanges are arranged at the outer sides of the horizontal two ends of the rail hook (12), and the rail (1) is inserted into the rail hook (12); an upper connecting block and a lower connecting block are arranged on one side, facing the metering cabinet, of the track hook (12), and the lower connecting block (122) is rotatably arranged in the middle of the track hook (12); a boss is arranged at the top of the track hook (12), and an upper connecting block (121) is rotationally connected with the boss;
Threaded holes corresponding to the bracket screw rods (113) are formed in the upper connecting block and the lower connecting block;
The track (1) is provided with a horizontal through groove at one side far away from the metering cabinet, the through groove is a rectangular groove, the track car (2) comprises two rollers (21) arranged towards one side of the metering cabinet, the rollers (21) are vertically arranged, the wheel surfaces of the two rollers (21) are attached, and the wheel surfaces of the upper roller (21) and the lower roller (21) are respectively attached to the upper inner side surface, the lower inner side surface and the upper inner side surface of the through groove;
Two sampling jacks (5) corresponding to each instrument are arranged, and each sampling assembly (4) comprises two inserted bars (41) which are arranged in parallel; the side, far away from the metering cabinet, of the inserted link (41) is sequentially pushed by the push rod (42), the inserted link (41) is fixedly arranged on the push rod, the push rod (42) is an electric push rod, and the main control module is electrically connected with the push rod (42) to form a control loop;
the upper side of the sampling assembly (4) is in sliding connection with the car body of the railway car (2) through a connecting rod (43);
Two spring balls are arranged on one side, facing the metering cabinet, of the inserted link (41), and each spring ball is attached to the sensing end of one pressure sensor; the two spring balls are respectively arranged at two ends of the horizontal diameter of each inserted link (41); the pressure sensor is electrically connected with the main control module to form a feedback path, and the main control module is also electrically connected with the roller motor to form a control loop.
2. The transformer substation metering circuit on-line monitoring device according to claim 1, wherein a main control module is arranged in the railway vehicle (2), and the input end of the main control module is connected with the output ends of the camera (3) and the sampling assembly (4) through a filter circuit respectively;
and the output end of the main control module is respectively connected with the storage module, the buzzer and the wireless module.
3. The on-line monitoring device for metering loops of substations according to claim 1, characterized in that one of the rollers (21) is a driving wheel, the axle of which is linked with a roller motor arranged on the railcar;
The roller (21) is a rubber wheel.
4. The transformer substation metering circuit on-line monitoring device according to claim 1, wherein a camera screw (31) is vertically arranged at the upper part of the camera (3), and the camera screw (31) is in threaded connection with the car body of the railway car (2);
The upper side of the camera (3) is also provided with a positioning rod, the axis of the positioning rod is parallel to the axis of the camera screw rod (31), and the positioning rod is in sliding connection with the car body of the railway car (2).
5. A method for detecting an on-line monitoring device for a metering circuit of a substation according to any one of claims 1 to 4, characterized in that,
S1, a test line is led out of a metering loop of a metering cabinet, and the test line is reserved at a sampling jack (5) at the outer side of the metering cabinet in a jack mode;
S2, a movable camera (3) and a sampling assembly (4) are arranged on the metering cabinet, the camera (3) is arranged corresponding to the metering cabinet instrument, and the sampling assembly (4) is arranged corresponding to the sampling jack (5);
s3, driving the camera (3) and the sampling assembly (4) to move and positioning an instrument and a sampling jack (5) which need to be detected;
S4, the camera (3) collects images of the instrument and uploads the images to the host computer through the main control module; the sampling assembly (4) uploads the upper computer through the main control module after completing sampling of the metering loop through the sampling jack (5);
S5, the main control module refers to the sampling result of the sampling circuit, carries out abnormality judgment according to a set value, and if abnormality exists, gives a warning to the upper computer, drives the buzzer to warn and waits for manual reset;
If no abnormality exists, the detection of the next group of meters and sampling jacks (5) is continued.
6. The method according to claim 5, wherein in S3, the positioning method of the sampling jack (5) is that,
S301, a main control module drives a push rod (42) to move towards the direction of the metering cabinet, and whether the end part of the inserting rod (41) is contacted with the metering cabinet body or not is detected through a spring ball and a pressure sensor at the end part of the inserting rod (41);
S302, after the inserted link (41) is confirmed to contact the metering cabinet body, the main control module drives the roller (21) to move, and at the moment, the inserted link (41) starts to translate;
S303, when one pressure sensor at the end part of one inserted link (41) feeds back no pressure, the main control module reduces the rotating speed of the roller (21), and when the other pressure sensor of the inserted link (41) feeds back no pressure, the inserted link is aligned with the sampling jack (5);
S304, the main control module drives the push rod (42) to continue to insert the rod (41) forwards, and when the pressure sensor feeds back the pressure again to reach the set value, the operation position of the rod (41) is indicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951160.7A CN110542876B (en) | 2019-10-08 | 2019-10-08 | On-line monitoring device and state detection method for metering loop of transformer substation |
Applications Claiming Priority (1)
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