CN107732743B

CN107732743B - 6-35kV equipment standardized switch cabinet system

Info

Publication number: CN107732743B
Application number: CN201710180954.9A
Authority: CN
Inventors: 郭锐
Original assignee: Lanzhou Power Supply Co Of State Grid Gansu Electric Power Co
Current assignee: Lanzhou Power Supply Co Of State Grid Gansu Electric Power Co
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2023-08-04
Anticipated expiration: 2037-03-24
Also published as: CN107732743A

Abstract

The switch cabinet is basically adopted for the 6-35kV equipment in the national range, but the switch cabinet is a totally-enclosed equipment, the wiring is not visual, the electrified part is hidden, the probability of occurrence of personal electric shock accidents is greatly increased, the operation and working safety are technically ensured, and the switch cabinet is particularly important for stopping the accidents. The invention particularly develops a standardized 6-35kV equipment switch cabinet system aiming at various problems existing in the prior art, and mainly aims at supplementing and developing the existing problems and defects so as to improve the intrinsic safety control level of the work of the switch cabinet and achieve the purposes of operation and maintenance, operation and overhaul safety of the equipment.

Description

6-35kV equipment standardized switch cabinet system

Technical Field

The invention belongs to the field of electric machinery, and particularly relates to a 6-35kV equipment switch cabinet system.

Background

The switch cabinet is basically adopted for the 6-35kV equipment in the national range, but the switch cabinet is a totally-enclosed equipment, the wiring is not visual, the electrified part is hidden, the probability of occurrence of personal electric shock accidents is greatly increased, the operation and working safety are technically ensured, and the switch cabinet is particularly important for stopping the accidents. To date, a plurality of personal death accidents caused by hidden equipment hazards and imperfect technical measures occur nationwide, and how to control the operation and maintenance of the equipment is an urgent real problem to be solved. The research and application of realizing anti-accident measures and improving the intrinsic safety level of the switch cabinet by using the technical means are to classify and analyze the accidents occurring according to the work of different parts of the switch room, the cable room, the bus room and the protection room, find out the reasons for the occurrence, combine the actual conditions of the equipment such as performance, structure, specificity and the like, and formulate out the technical measures for preventing the occurrence of the accidents, thereby having positive practical significance for improving the safety control level of the switch cabinet, and also strengthening the intrinsic safety management of the switch cabinet, preventing the safety accidents, ensuring the personnel safety of staff, ensuring the safe and stable operation of a power grid and the reliable power supply, and ensuring the need of protecting the national and investor assets from loss.

The prior art has a plurality of defects, and the standby handcart is stored on the ground, so that the service life of the standby handcart is easily shortened due to damp, and the operation and the work are inconvenient; the bus of the switch cabinet cannot be electrically tested to be grounded; the direct electricity test and the indirect electricity test cannot be met before the switch cabinet is connected with the line grounding knife switch; the grounding disconnecting link of the switch cabinet circuit has the problems of mechanical locking and no electric locking and easy error closing; a closed lead is used between the switch cabinet and the main transformer, and the main transformer cannot be electrically tested to be grounded when working; the valve baffle is opened by the misoperation of the switch room to generate personal electric shock accidents, and the electrified part is mistakenly touched by the cable room to generate personal electric shock accidents; the bus room mistakenly touches the electrified part to generate personal electric shock accidents; the measure of preventing the on-load pulling-in knife switch is imperfect; the incoming line interval is mainly formed by adopting a double-handcart, and the electrified display device only monitors the bus voltage and does not monitor the side voltage of the main transformer switch cabinet; the bus voltage transformer interval does not detect the secondary reverse power transmission condition.

Disclosure of Invention

Aiming at various problems existing in the prior art, the invention particularly develops a 6-35kV equipment standardized switch cabinet system, and mainly supplements and develops the existing problems and defects so as to improve the intrinsic safety control level of the switch cabinet work and achieve the purposes of operation and maintenance, operation and overhaul safety of the equipment. In order to achieve the technical aim, the invention adopts the following technical means:

a 6-35kV equipment standardization switchgear system comprising:

1. the standby handcart storage fixed support frame is designed and configured.

2. The design and configuration of the integrated test electric grounding handcart device.

3. The design and configuration of the circuit-specific electricity testing handcart device.

4. The design and installation of the line anti-electrification earthing knife locking device.

5. The design and configuration is that a special device for main transformer side electricity testing and grounding is arranged.

6. The valve mechanism locking device is designed and installed,

7. and designing and configuring a valve baffle isolation vehicle.

8. The cable chamber rear cabinet door locking device is designed and installed.

9. The bus-bar chamber rear cabinet door locking device is designed and installed.

10. The design and installation of the locking device for the anti-pulling and closing knife switch with load.

11. The special safety warning and warning mark is designed.

12. The main transformer switch cabinet side voltage monitoring device is designed and installed.

13. The secondary reverse power transmission alarm device of the bus voltage transformer is designed and installed.

The standby handcart storage fixed support frame has the functions of being flush with the switch room, limiting, being in butt joint with the movable support, blocking, preventing dust and the like, solves the problems of standby handcart storage, dust prevention, transportation, is mainly used for storage of the standby handcart, prevents the standby handcart from being wetted and polluted, and prolongs the service life of the standby handcart.

Drawings

FIG. 1 is a schematic view of a spare cart storage stationary support frame;

FIG. 2 is a front view of an integrated assay electrical grounding cart device;

FIG. 3 is a side view of an integrated assay electrical grounding cart device;

FIG. 4 is a side view of a line specific electroscope cart device;

fig. 5 front view of a line specific electroscope cart device;

FIG. 6 is a schematic diagram of a circuit-specific electroscope cart device;

FIG. 7 is a schematic diagram of a circuit anti-static earthing switch locking apparatus;

FIG. 8 is a schematic diagram of an electrical circuit of the line anti-live ground blade lockout;

FIG. 9 is a schematic diagram of a shutter mechanism latch;

FIG. 10 is a schematic electrical diagram of a shutter mechanism latch;

FIG. 11 is a block diagram of a shutter baffle isolation vehicle;

fig. 12-14 are circuit block diagrams of the system.

Wherein (1) a locking electromagnet (3) is locked in and out of a cart hole (2), a manual operation hole (5) of a ground knife is connected with a ground knife spring (6) of a live display (7), a secondary bolt locking push plate (8) is connected with a ground knife (9), a sensor (10) is connected with a contact arm (11) of a quincuncial contact (8 a) and a primary valve push plate (13) is connected with a ground row (14) to assist a switch (15), a secondary bolt (16) is tested by a power supply (17), an observation window (19) is connected with a knife switch position indicator lamp (20) of a buzzer (21), a five-prevention lock (22) is connected with a ground knife static contact (23) of the ground knife, a moving contact (1 a) is connected with a cart hole (2 a) of a limit hole, (3 a) of the cart body, (4 a) of the live display, (5 a) a sensor, (6 a) a contact arm, (7 a) a quincuncial contact, (8 a) and a socket, (9 a) is tested by a power supply, (10 a) an observation window, (11 a) a buzzer, a ground transmission rod (1 c), a ground knife operation hole (2 c) and a blocking electromagnet (3), the handcart comprises a handcart track (1D), a lower valve mechanism (2D), an upper valve mechanism (3D), a lower valve mechanism locking hole (4D), an upper valve mechanism locking hole (5D), a roller switch (6D), the method comprises the steps of carrying out a first treatment on the surface of the (1E) The method comprises the steps of (1) entering and exiting a vehicle hole, (2E) an insulating baffle, (3E) a handcart body, (4E) a five-prevention lock, (5E) a limiting hole, (6E) a first pattern mark, (7E) a second pattern mark, (8E) a first character mark, (9E) a second character mark, DST1 and DST2: electromagnet, H: live display, FM: buzzer, S9: working position auxiliary switch, KA2: intermediate relay, DXN: sensor, ZJ2: intermediate relay, DY1, DY2: voltage relay, R1: and (3) resistance.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

1. A stand-by handcart storage fixed support frame.

As shown in figure 1, the device has the functions of being flush with the switch room, limiting, being locked in a butt joint mode with the movable support, preventing dust and the like, solves the problems of storage, dust prevention and transportation of the standby handcart, is mainly used for storage of the standby handcart, prevents the standby handcart from being wetted and polluted, prolongs the service life of the standby handcart, saves the maintenance cost, and is matched with the movable handcart frame for use, so that operation and maintenance of operation and maintenance staff are facilitated, operation and maintenance staff are reduced, operation and maintenance time is shortened, and labor efficiency and economic benefit are improved.

2. An integrated test electric grounding handcart device.

As shown in figures 2 and 3, the device has 12 functions of 'integrating an electricity checking grounding handcart, checking the integrity of an electricity checking device, checking the uniqueness of a grounding point, preventing from being mistakenly charged, preventing a ground wire from being hung or grounded, preventing the ground wire from being pulled on or grounded, controlling the opening mode of a valve, limiting the device, controlling the operation mode of the grounding device, remote signaling, checking the position of the grounding device and connecting the inside and the outside of the electricity', solves the problem that the electricity checking and the grounding cannot be performed during the bus overhaul, is mainly used for the electricity checking and the grounding during the bus overhaul of a switch cabinet, and really ensures the safety of an overhaul worker.

The overall structure of the device of the invention is composed of the following 23 parts: the automatic locking device comprises a locking electromagnet (3) at a vehicle inlet and outlet hole (2), a manual operation hole (5) of a ground knife of a handcart body (4), a ground knife spring (6), a secondary plug locking push plate (7), a ground knife (9), a sensor (10), a contact arm (11), a quincuncial contact (12), a primary valve push plate (13), a ground row (14), an auxiliary switch (15), a secondary plug (16), a test power supply (17), an electroscope (18), an observation window (19), a ground knife position indicator (20), a buzzer (21), a five-prevention lock (22) and a ground knife static contact (23).

According to the invention, by combining the characteristics of metal armoured cabinet equipment, a handcart frame base matched with an outlet switch is developed, and an electricity checking and grounding device, a five-prevention locking device, an alarm device, a push plate, a secondary bolt and the like are arranged on the base, so that the integrated structure of the handcart frame base is realized: the positions of the electricity checking device and the grounding device are reasonably distributed in the same device, so that the device has a simple structure, is flexible to operate, is economical and practical, and meets the regulation. Device integrity inspection: the acousto-optic inspection, the voice alarm and the integrity inspection of the electricity inspection device are realized through the sensor, the electrified display device and the buzzer. Uniqueness of ground point: the device and the bus grounding interval realize a five-prevention logic locking function so as to ensure the uniqueness of the pushing interval (an obvious grounding mark is arranged at the proper position of the interval). Prevent mistake and go into electrified interval: the device is in forced locking with the bus-bar, bus-bar inlet wire switch handcart and the grounding disconnecting link, so that the handcart can be reliably controlled. Fifthly, preventing electrification and closing the grounding disconnecting link: the grounding device is reliably locked under the condition that the secondary side of the bus or the voltage transformer is proved to have reverse power transmission through forced locking between the electricity testing device and the grounding device. Sixth, preventing closing with a grounding disconnecting link: the forced locking is realized between the bus-bar and bus-wire-incoming switch handcart and the device, and the device can reliably control the bus-bar and bus-wire-incoming switch handcart to enter when in a working position. Shutter opening mode: the opening mode control of the valve is realized by reasonably arranging the push plate. Limiting the device: through set up the transmission lead screw on this handcart device chassis car, realize that the device is spacing, prevent to push into the damage sound contact of too dark. The operation mode of the grounding disconnecting link comprises the following steps: the grounding knife switch is manually or electrically operated through the loop arrangement of the grounding device. Remote signaling: and the remote signaling function is realized by uploading the positions of the device handcart and the grounding disconnecting link through the measurement and control device. Checking the position of the grounding disconnecting link: and the lamplight, mechanical and background position inspection of the grounding device is realized through the arrangement of the electric, mechanical and observation windows. A secondary bolt: the secondary bolt is arranged on the device, so that the electric internal and external connection is realized.

3. A special electricity testing handcart device for a circuit.

The device has the functions of integrity check of the electricity checking device, valve opening mode control and device limit as shown in fig. 4-6, solves the problems that direct electricity checking and indirect electricity checking cannot meet the regulation before a circuit grounding disconnecting link, is mainly used for electricity checking before circuit grounding, effectively prevents the safety risk of the live-line grounding disconnecting link, and really ensures the safety of operators and equipment.

Referring to fig. 4-5, a switchgear line electroscope comprises a handcart body 3a, wherein the handcart body 3a comprises a bearing seat and a vertical installation seat arranged at one side of the top of the bearing seat, one side of the bearing seat is provided with a vehicle inlet and outlet hole 1a, the vehicle inlet and outlet hole 1a is positioned at one side of the bearing seat close to the vertical installation seat, one side of the bearing seat is provided with a limit hole 2a, the other side of the top of the bearing seat is fixedly provided with a test power supply 9a, the positive output end and the negative output end of the test power supply 9a are respectively electrically connected with a wiring terminal corresponding to a socket 8a, the socket 8a is arranged at one side of the vertical installation seat, the other side of the vertical installation seat is provided with a sensor 5a, one side of the sensor 5a far away from the vertical installation seat is electrically provided with a contact arm 6a, one end of the contact arm 6a far away from the sensor 5a is provided with a plum blossom contact 7a, the positive output end of the test power supply 9 is also connected with the input end of the relay KA1 and the input end of the relay KA2, the negative input end of the test power supply 9a is respectively and electrically connected with the output end of the relay KA1 and the output end of the relay KA2, the relay KA1 comprises an interlocking switch K1, a pin 3a of the interlocking switch K1 is connected with a pin 1a of an electrified display 4a, a pin 2a of the electrified display 4a is electrically connected with a pin 4a of the interlocking switch K1, the electrified display 4a is provided with the interlocking switch K4, a pin 1a of the interlocking switch K1 is electrically connected with the input end of the relay KA1, a pin 2a of the interlocking switch K1 is electrically connected with the output end of the relay KA1, the relay KA2 comprises an interlocking switch K2 and an interlocking switch K3, a pin 1a of the interlocking switch K2 is electrically connected with the input end of the relay KA2, and a pin 2 of the interlocking switch K2 is electrically connected with the output end of the relay KA2, the pin 3a of interlock switch K2 is electrically connected with the one end of interlock switch K4 and the pin 1 of interlock switch K3, the other end of interlock switch K4 is connected with the pin 1a of buzzer 11a, and the pin 2 of buzzer 11a is electrically connected with the pin 4a of interlock switch K2 and the pin 2a of interlock switch K3, be electrically connected with light D1 and sensor 5a between the pin 3a of interlock switch K3 and the pin 4a, buzzer 11a and electrified display 4a fixed mounting are in the one side that vertical mount pad is close to socket 8a respectively, and buzzer 11a and electrified display 4a are located the top both sides of socket 8a respectively, observation window 10a is still seted up to the one side that vertical mount pad is close to socket 8a, and observation window 10a is located one side of socket 8a, relay KA1 and relay KA2 are intermediate relay KA1 and relay KA 2's model are hh54p, relay KA1 and relay KA2 are fixed in handcart body 1 a's inside, buzzer 11a is the model DWJ-5711 a.

4. A locking device for a line anti-electrification grounding knife.

As shown in fig. 7 and 8, the device has the functions of an electric forced locking grounding disconnecting link and an electric checking locking operation hole, solves the problem that no electric locking exists between the line-side grounding disconnecting link and the electrified display device, and when the switch handcart is pulled out to a test position, the electrified grounding disconnecting link accident is likely to happen, and is mainly used for forcibly locking the line-side grounding disconnecting link under the condition of electrified line, thereby practically ensuring the safety of operators and equipment.

5. A main transformer side electricity testing grounding special device.

As shown in figures 2 and 3, the device has 12 functions of' integrating an electricity checking grounding handcart, checking the integrity of an electricity checking device, checking the uniqueness of a grounding point, preventing from being mistakenly inserted into an electrified interval, preventing an electrified ground wire from being hung or connected with a grounding disconnecting link, preventing the ground wire from being electrified or the grounding disconnecting link from being electrified, controlling the opening mode of a valve, limiting the device, controlling the operation mode of the grounding device, remote signaling, checking the position of the grounding device and connecting the inside and outside of electric, solves the problems that a closed lead is used at the joint of a main transformer and a switch cabinet, the electricity checking and grounding of a low-voltage side of main transformer overhaul are impossible, and is mainly used for the electricity checking and grounding of the low-voltage side of main transformer overhaul, so that the safety of overhaul personnel is practically ensured.

6. Valve mechanism locking device

As shown in figures 9 and 10, the device has 5 functions of' electric control of a valve mechanism, mechanical forced locking of the valve mechanism, matching of a roller switch and a handcart chassis, separate control of an upper valve and a lower valve, and release of locking of the valve mechanism during normal operation of the handcart, solves the problem that when a switch cabinet switch chamber works, the valve baffle is easy to be mistakenly touched or opened manually without any countermeasure for opening the valve baffle, and personal electric shock accidents occur, and is mainly used for automatically locking the corresponding valve mechanism when the switch handcart is pulled out to a maintenance position and when a bus or a circuit is electrified, so that workers cannot manually or mistakenly touch the valve baffle during the work of the switch chamber, and the safety and the reliability of the work are ensured.

7. A valve baffle isolation vehicle.

As shown in figure 11, the device has the functions of interval matching, limiting and isolating upper and lower valve baffles and microcomputer locking, solves the problem that the valve mechanism of the switch chamber of the existing switch cabinet has no locking mechanism, has the functions of manually or mistakenly touching and opening the upper and lower valve baffles and generating personnel electric shock accident risks, and is mainly used for adjusting the valve and the ground knife mechanism in the switch chamber and replacing the working chamber when a bus or a line is electrified when the switch handcart is pulled out to a maintenance position, isolating the upper and lower valve baffles and practically guaranteeing the safety of maintenance personnel.

Referring to fig. 11, a shutter baffle isolation cart includes a cart body 3E, an entrance/exit hole 1E is provided at one side of the cart body 3E, and the entrance/exit hole 1E is matched with the shutter baffle isolation cart, an insulating baffle 2E is fixed at the top of the cart body 3E, and the insulating baffle 2E is positioned at one side of the cart body 3E far from the entrance/exit hole 1E, a first pattern mark 6E and a second pattern mark 7E are horizontally coated at one side of the insulating baffle 2E far from the entrance/exit hole 1E, and the second pattern mark 7E is positioned at one side of the first pattern mark 6E, a second text mark 9E is provided above the second pattern mark 7E, and a first text mark 8E is provided below the second pattern mark 7E, the first character mark 8E and the second character mark 9E are both coated on one side of the insulating baffle 2E, which is far away from the vehicle inlet and outlet hole 1E, a limit hole 5E is formed in one side of the handcart body 3E, the limit hole 5E is positioned on one side of the handcart body 3E, which is close to the vehicle inlet and outlet hole 1E, two operation holes are respectively formed in two sides of the handcart body 3E, a five-prevention lock 4E is mounted in each operation hole, the five-prevention lock 4E locks a valve baffle plate of a switch chamber of the switch cabinet, the first pattern mark 6E is an electric warning mark, the second pattern mark 7E is a touch prohibition mark, the first character mark 8E is a static contact and is electrified, movement is prohibited in work, and the second character mark 9E is an insulating baffle plate vehicle.

Fig. 12-14 are schematic circuit diagrams, combined with schematic diagrams:

8. a locking device for a rear cabinet door of a cable chamber.

The device has the function of forcing mechanical and electric locking of the cable chamber rear cabinet door, solves the problem of forced locking of the cable chamber rear cabinet door when a line is electrified, and prevents the risk of personal electric shock accidents, is mainly used for forcing locking of the cable chamber rear cabinet door under the condition of electrified line, and really ensures the safety of maintenance personnel.

9. A bus-bar chamber rear cabinet door locking device.

The device has the function of forcing mechanical and electric locking of the back cabinet door of the bus-bar chamber, solves the problem of forced locking of the back cabinet door of the bus-bar chamber when the bus is electrified, and prevents the danger of personal electric shock accidents, is mainly used for forcing to lock the back cabinet door of the bus-bar chamber under the condition of electrified bus, and really ensures the safety of maintenance personnel.

10. A locking device for preventing a knife switch from being pulled and closed under load.

The device has the function of 'forced mechanical and electric locking of the switch to the handcart when the switch is closed', solves the problem of forced locking of the handcart when the switch is closed, prevents the occurrence of the accident of pulling the switch on load, and really ensures the personal safety and the equipment safety.

11. A main transformer switch cabinet side voltage monitoring device.

The device has the function of 'main transformer switch cabinet side voltage acquisition and reminding', solves the problems that an electrified display device only monitors bus voltage and does not monitor main transformer switch cabinet side voltage, prevents personal electric shock accidents, and really ensures personal and equipment safety.

12. A secondary reverse power transmission alarm device of a bus voltage transformer.

The device has the functions of collecting, reminding and alarming the secondary reverse voltage of the bus voltage transformer when the bus voltage transformer is stopped, solves the problem that the secondary reverse voltage of the bus voltage transformer cannot be collected and alarmed, prevents the occurrence of personal electric shock accidents, and really ensures the personal safety and equipment safety.

13. A special safety warning and caution mark.

The design is striking safety warning, warning sign, spraying on the baffle of switch room upper and lower valve, generating line and circuit room, insulating fender car's baffle to remind and warn the staff, prevent the emergence of personal accident, ensure cubical switchboard intrinsic safety.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. A 6-35kV equipment standardization switchgear system, the system comprising: the standby handcart is stored with a fixed support frame, an integrated test electric grounding handcart device, a special test electric handcart device for a circuit and a valve baffle isolation handcart; wherein the standby handcart is stored and fixed on the support frame and is flush with the switch chamber in equal height, and is in butt joint locking with the movable support; the integrated test electric grounding handcart device comprises: the device comprises a vehicle inlet and outlet hole, a locking electromagnet, a vehicle body, a ground knife manual operation hole, a ground knife spring, a live display, a secondary bolt locking push plate, a ground knife, a sensor, a contact arm, a plum blossom contact, a primary valve push plate, a ground row, an auxiliary switch, a secondary bolt, a test power supply, an electroscope lock, an observation window, a ground knife switch position indicator lamp, a buzzer, a five-prevention lock, a ground knife static contact and a ground knife moving contact; the electric locking device comprises a handcart body, a handcart inlet and outlet hole, a handcart grounding hole, a handcart body, a locking electromagnet, a locking hole and a grounding part, wherein the handcart inlet and outlet hole is used for pushing in and pulling out an electric-checking grounding handcart, and the electric locking of the handcart inlet and outlet operation hole and the operation hole of the grounding part is controlled by the locking electromagnet; the manual operation hole of the grounding knife is a manual opening and closing grounding knife switch, and the opening and closing of the grounding movable contact can be controlled through a grounding knife spring; the live display can display whether the three phases of the overhaul bus have voltage or not; whether the bus is grounded or not can be overhauled through the grounding knife; the sensor can sense whether the three phases of the bus have voltage or not, provide induction voltage for electrified display, and is connected with the fixed moving contact and the sensor through the contact arm, and the quincuncial contact is used for contacting with the fixed contact of the cabinet body; the primary valve pushing plate is used for controlling the opening of the upper contact isolation baffle and the lower contact isolation baffle of the cabinet body; the grounding bar ensures reliable contact between the overhaul bus and the main grounding grid; the secondary bolt is used for communicating the secondary loop, the test power supply is used for checking the integrity of the electrified display, and the electroscope lock can prevent the grounding knife from being separated and combined by mistake; the switch-on/switch-off and moving contact condition of the grounding disconnecting link can be checked through the observation window, and the grounding condition is displayed through the grounding disconnecting link position indicator lamp; when the electrified display device senses that electricity exists, a buzzer is used for carrying out voice alarm to remind operators; the five-prevention lockset can prevent from entering the electrified interval by mistake, so that the uniqueness of the grounding point is ensured; the anti-misoperation device is used for the grounding device and the handcart; the grounding knife fixed contact is reliably contacted with the grounding knife grounding moving contact, and the grounding knife moving contact is reliably contacted with the grounding knife grounding fixed contact.

2. The standardized switch cabinet system of 6-35kV equipment according to claim 1, wherein the integrated test electric grounding handcart device comprises a handcart body, wherein the handcart body comprises a bearing seat and a vertical mounting seat arranged on one side of the top of the bearing seat, and the handcart body is characterized in that one side of the bearing seat is provided with a vehicle inlet and outlet hole, the vehicle inlet and outlet hole is positioned on one side of the bearing seat, which is close to the vertical mounting seat, one side of the bearing seat is provided with a limiting hole, the other side of the top of the bearing seat is fixedly provided with a test power supply, the positive output end and the negative output end of the test power supply are respectively electrically connected with a wiring terminal corresponding to a socket, the socket is arranged on one side of the vertical mounting seat, a sensor is arranged on the other side of the vertical mounting seat, a contact arm is electrically arranged on one side, which is far away from the vertical mounting seat, of the sensor, and one end, which is far away from the sensor, of the contact arm is provided with a plum blossom contact.

3. The standardized switch cabinet system of 6-35kV equipment according to claim 1, wherein the valve baffle isolation cart comprises a cart body, and is characterized in that one side of the cart body is provided with a cart inlet and outlet hole, the cart inlet and outlet hole is matched with the valve baffle isolation cart, the top of the cart body is fixedly provided with an insulating baffle, the insulating baffle is positioned at one side of the cart body far away from the cart inlet and outlet hole, one side of the insulating baffle far away from the cart inlet and outlet hole is horizontally coated with a first pattern mark and a second pattern mark, the second pattern mark is positioned at one side of the first pattern mark, a second character mark is arranged above the second pattern mark, a first character mark and a second character mark are respectively coated at one side of the insulating baffle far away from the cart inlet and outlet hole, one side of the cart body is provided with a limit hole, two operation holes are respectively formed at two sides of the cart body, the inside of each operation hole is provided with a valve lock protection switch cabinet, and the valve lock protection metal switch cabinet is installed inside the five protection switch cabinet.

4. A 6-35kV equipment standardization switchgear system of claim 1 further comprising a line anti-live earth-knife locking device; a valve mechanism locking device; the locking device is used for preventing the on-load pulling-in of the disconnecting link; a main transformer switch cabinet side voltage monitoring device; a secondary reverse power transmission alarm device of a bus voltage transformer; the device is arranged in the handcart body and is connected with the electrified display and the observation window.

5. The standardized switchgear system of 6-35kV equipment according to claim 4, wherein the line anti-electrification ground knife locking device comprises a ground knife driving rod, a ground knife operation hole baffle and a locking electromagnet DST, wherein the ground knife driving rod is provided with the ground knife operation hole baffle at one end, the locking electromagnet DST is provided at one side of the ground knife operation hole baffle, the locking electromagnet DST and the ground knife operation hole baffle are positioned at the same side of the ground knife operation hole baffle, one end of the locking electromagnet DST is electrically connected with a second electrification display H2, one end of the second electrification display H2 away from the locking electromagnet DST is electrically connected with an electrification check lock WF, one end of the electrification check lock WF away from the second electrification display H2 is electrically connected with a first electrification display H1, one end of the first electrification display H1 away from the electrification check lock WF is electrically connected with a handcart switch XO, and one end of the handcart switch away from the first electrification display H1 is electrically connected with one end of the locking electromagnet DST away from the second electrification display H2.

6. The standardized 6-35kV equipment switch cabinet system according to claim 1, wherein the system structure is provided with professional warning marks.