A movable high-voltage cabinet capable of automatic power supply and cut-off

Abstract

The present application relates to the technical field of movable high-voltage cabinet that can automatically send and stop power supply, and discloses a movable high-voltage cabinet that can automatically send and stop power supply, and belongs to the technical field of power distribution switch control device manufacturing, a movable high-voltage cabinet with one-key intelligent sequential control operation, a vacuum circuit breaker, a handcart, a grounding switch, a one-key intelligent sequential control operation device, a circuit breaker chamber and a cable chamber camera and auxiliary components, a power cloud platform, and the like; the movable high-voltage cabinet with one-key intelligent sequential control operation not only solves the problems of complicated operation of the switching of the position of the working state of the circuit breaker, the opening and closing of the circuit breaker, the energy storage, and the opening and closing of the grounding switch, but also solves the problems that the handcart-type circuit breaker cannot be visualized in real time during the advancing or exiting process, and the opening and closing state of the grounding switch cannot be visualized and remotely operated, and further solves the problem that if mechanical interlocking is not in place or human judgment is wrong, misoperation is easy to occur, and an electrical safety accident is formed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of movable high-voltage cabinets that can automatically send and stop power supply, in particular to a movable high-voltage cabinet that can automatically send and stop power supply. BACKGROUND

[0002] The movable high-voltage cabinet is a kind of high-voltage complete power distribution device in which primary equipment and secondary equipment are assembled in the cabinet according to different use schemes, and the vacuum circuit breaker trolley is located in the circuit breaker room in the middle of the switch cabinet, can be flexibly shaken in and out, and can realize "power five prevention" operation in cooperation with the grounding switch. The movable high-voltage cabinet in the current power system has the following defects:

[0003] (1) The movable high-voltage cabinet sends and stops power supply through manual and safety protection inspection: the trolley in and out of the movable high-voltage cabinet adopts a rotating handle manual mode to shake in and out the circuit breaker trolley, to realize the exchange of test position and working position; the operator uses the handle to operate the grounding switch to realize the opening and closing operation of the grounding switch; the opening and closing of the vacuum circuit breaker and the energy storage operation are completed by the opening and closing switch or button; therefore, the exchange of the circuit breaker working position, the opening and closing operation of the grounding switch, the opening and closing of the circuit breaker and the energy storage are all independent manual operations, so this operation mode is relatively cumbersome, and only the operator with professional technical ability can implement various power sending and stopping operations of the switch cabinet.

[0004] (2) No prompt for operator misoperation: during the opening and closing operation of the circuit breaker and the operation of the grounding switch, it is necessary to artificially determine whether the interlocking between the cabinet door and the grounding switch, the circuit breaker trolley and the grounding switch is correct, whether the line is live, and whether the power sending program is correct, etc. If the mechanical interlocking is unreliable or the artificial determination is wrong, misoperation may occur and an electrical safety accident may be formed.

[0005] (3) The process of shaking in and out of the trolley type circuit breaker in the switch cabinet cannot be remotely operated and remotely observed, and whether the wrench contact of the trolley type circuit breaker and the static contact of the switch cabinet can be reliably inserted cannot be observed in time.

[0006] (4) The grounding switch in the switch cabinet cannot be remotely operated and remotely observed during the closing and opening process, and whether the grounding switch is reliably opened or closed cannot be observed in time.

[0007] Therefore, the existing technology urgently needs a movable high-voltage cabinet that can automatically send and stop power supply to solve this problem. SUMMARY

[0008] The present application provides a movable high-voltage cabinet that can automatically send and stop power supply, which solves the problems described in the background.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a removable high-voltage switchgear capable of automatic power supply and de-energization, comprising a high-voltage switchgear body, a one-button intelligent sequential control operation device on the upper front section of the high-voltage switchgear body, a cabinet door hinged to the front of the high-voltage switchgear body, a vacuum circuit breaker on the upper front section of the high-voltage switchgear body, a grounding switch on the lower front section of the high-voltage switchgear body, a circuit breaker compartment camera fixedly installed on the upper middle section of the high-voltage switchgear body, a cable compartment camera fixedly installed on the lower middle section of the high-voltage switchgear body, a handcart fixedly installed on the upper rear section of the high-voltage switchgear body, auxiliary electrical components at the bottom of the handcart, a fan fixedly installed on the inner top of the high-voltage switchgear body, a fixed frame fixedly connected to the outer top of the high-voltage switchgear body, a dustproof plate slidably connected to the inner wall of the fixed frame, fixed blocks fixedly connected to the outer walls of both sides of the fixed frame, a sliding rod slidably connected to the inner wall of the limiting hole of the fixed block, a push block fixedly connected to the outer wall of the sliding rod, and a limiting spring sleeved on the outer wall of the sliding rod.

[0010] Preferably, the vacuum circuit breaker is assembled with a handcart to form a handcart-type vacuum circuit breaker. The handcart is equipped with an electric operating mechanism consisting of a DC permanent magnet motor, a reducer, a clutch, and transmission gears. The electric operating mechanism enables the handcart-type vacuum circuit breaker to be operated locally, solving the problem of cumbersome manual operation. By accessing the Wanliyan Power Cloud Platform, authorized personnel can remotely operate the circuit breaker with one click through facial recognition, and visualize the real-time status of the handcart circuit breaker's entry and exit, circuit breaker opening and closing, energy storage operation, and grounding switch opening and closing.

[0011] Preferably, the circuit breaker compartment camera is installed inside the high-voltage switchgear body, and the circuit breaker compartment camera is aimed at the plum blossom contact of the vacuum circuit breaker and the stationary contact of the switchgear. It is connected to the Wanliyan Power Cloud Platform, which can realize remote operation and observe the depth of the mutual insertion of the moving and stationary contacts through the Wanliyan Power Cloud Platform, ensuring the safe and reliable operation of the switchgear.

[0012] Preferably, the grounding switch is fixedly equipped with an electric operating mechanism, which realizes the opening and closing functions of the grounding switch. At the same time, a one-button intelligent sequential control device detects and determines whether the safety conditions for closing and opening the grounding switch are met. This not only solves the cumbersome manual operation but also provides the operator with a safe and reliable operation guarantee.

[0013] Preferably, the cable room camera is fixedly installed inside the high-voltage switchgear body, and the cable room camera is aimed at the moving and stationary contacts of the grounding switch installed in the cable room, and is connected to the Wanliyan Power Cloud Platform. In this way, remote operation and direct observation of the opening and closing position status of the moving and stationary contacts can be achieved through the dedicated Wanliyan Power Cloud Platform, ensuring safe and reliable power supply and maintenance of the switchgear.

[0014] Preferably, the one-button intelligent sequential control operation device has a built-in microcontroller and a switch input module including a handcart position signal, a circuit breaker status signal, a circuit breaker energy storage status signal, a grounding switch status signal, and a live compartment door status indicator light; a sensor input module including a high-voltage live sensor and a temperature and humidity sensor; and an LCD touch screen. They are interconnected through electrical signals. After processing and analysis, the microcontroller outputs signals such as handcart motor drive, vacuum circuit breaker drive, grounding switch motor drive, and other relay outputs. It realizes the grounding switch closing and opening, handcart entry and exit, vacuum circuit breaker closing and opening, energy storage, and other switch outputs in the "five power protections" operation sequence.

[0015] Preferably, the auxiliary electrical components include a handcart position signal (i.e., handcart auxiliary contact), a circuit breaker status signal (i.e., circuit breaker auxiliary switch), a circuit breaker energy storage status signal (i.e., circuit breaker auxiliary switch), a grounding switch status signal (i.e., grounding switch auxiliary contact), a energized compartment door status (i.e., limit switch), and a high-voltage energized sensor. The intelligent one-button sequential control device can determine the energized status of the busbar, the open / closed status and location of the circuit breaker, and the open / closed position of the grounding switch by corresponding to the primary simulation diagram of the input signal, ensuring that the built-in primary system simulation board can effectively present the working status of the busbar and each functional unit in real time.

[0016] Preferably, the slide rod is slidably connected to the inner wall of the limiting holes opened on both sides of the dustproof plate, and the limiting spring is always in a compressed state.

[0017] This invention provides a removable high-voltage switchgear capable of automatic power supply and de-energization. This removable high-voltage switchgear with automatic power supply and de-energization has the following advantages:

[0018] (1) The one-button closing or one-button opening of the intelligent one-button sequential control device on the removable high voltage switch can automatically complete the forward and backward functions of the handcart, the closing and opening functions of the circuit breaker, the opening and closing functions of the grounding switch, and automatically determine whether the energized back door is closed or open.

[0019] (2) The dynamic display of the primary system simulation diagram can be realized through the display screen of the intelligent one-button sequential control device on the removable high voltage switch: real-time display of bus energized status, handcart position status, circuit breaker opening and closing status and energy storage status, grounding switch opening and closing status, etc.

[0020] (3) The internal logic of the intelligent one-button sequential control device on the removable high voltage switch can determine the closing and opening status of the live back door, and the built-in speaker can broadcast voice to remind the operator whether the current "five-proof" interlocking function is met. When the "five-proof" interlocking function is not met, all one-button closing and one-button opening operations will be automatically stopped.

[0021] (4) The “operation ticket” management system can be implemented through the program of the intelligent one-key sequential control device on the removable high voltage switch. That is, the operator and the supervisor must enter the password twice before “one-key closing” and “one-key opening” can be implemented, thus eliminating abnormal operation and electrical safety accidents caused by human error or failure to implement the operation ticket management system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 This is a top view of the structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the one-button power supply and one-button power outage process of the removable high-voltage switchgear with one-button intelligent sequential control operation according to the present invention.

[0026] Figure 5 This is a block diagram illustrating the connection relationship of a removable high-voltage switchgear with one-button intelligent sequential control operation according to the present invention.

[0027] In the diagram: 1. High-voltage switchgear body 2. Cabinet door 3. One-button intelligent sequential control device 4. Vacuum circuit breaker 5. Grounding switch 6. Cable compartment camera 7. Circuit breaker compartment camera 8. Handcart 9. Auxiliary electrical components 101. Fan 102. Fixing frame 103. Dustproof plate 104. Fixing block 105. Slide rod 106. Limit spring 107. Push block. Detailed Implementation

[0028] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0030] Example:

[0031] A preferred embodiment of the withdrawable high-voltage switchgear provided by the invention, capable of automatic power supply and de-energization, is as follows: Figures 1 to 5 As shown: In Figure 5In the high-voltage cabinet body 1, a 32-bit single-chip microcomputer, a parameter memory, a switch value input detection module, a high-voltage live detection module, a communication interface 1-4, a five-prevention verification module, and a relay output module are included; outside the high-voltage cabinet body 1, a touch display screen, a temperature and humidity sensor, a high-voltage live sensor, a handcart position signal, a circuit breaker state signal, a circuit breaker energy storage state signal, a grounding switch state signal, a live interval door state signal, a handcart motor, a circuit breaker opening and closing coil, a circuit breaker energy storage motor, a grounding switch motor, and the like are included; the parameter memory is disposed in the 32-bit single-chip microcomputer; the 32-bit single-chip microcomputer is interconnected with the communication interface 1-4, receives signals from the temperature and humidity sensor and the touch display screen, and transmits information of the single-chip microcomputer to the touch display and the temperature and humidity controller for output; the switch value input detection signal includes the handcart position signal, the circuit breaker state signal, the circuit breaker energy storage state signal, the grounding switch state signal, and the live interval door state signal; the high-voltage live detection signal is derived from the high-voltage live sensor; the 32-bit single-chip microcomputer receives the high-voltage live detection signal and the switch value input detection signal, and after processing and analyzing external information of the five-prevention verification module, the 32-bit single-chip microcomputer outputs through a relay; the relay output includes handcart in-out driving, circuit breaker opening and closing driving, circuit breaker energy storage driving, grounding switch opening and closing driving, and other relay output signals such as fan, horn, bus color display, and the like, and functions such as grounding switch motor opening and closing, handcart motor in-out, circuit breaker opening and closing coil opening and closing, and circuit breaker energy storage motor energy storage are realized in the order of the "five-prevention of electric power";

[0032] Figure 3The one-key power transmission and one-key power cut flow chart of the one-key intelligent sequence control operation of the movable high-voltage cabinet of the application; in the process of implementing one-key power transmission, the operating device automatically determines whether the live interval door is closed in place in the first step, if not, the one-key intelligent sequence control operation device 3 issues a voice through the loudspeaker to prompt the operator that the live interval door is not closed in place and ends the one-key operation closing action; if the live interval door is closed in place, the operation sequence is executed to determine whether the grounding switch 5 is divided in place, if not, the one-key intelligent sequence control operation device 3 automatically operates the grounding switch 5, if yes, the next step is automatically executed; the second step automatically determines whether the handcart 8 is in the working position, if not, the one-key intelligent sequence control operation device 3 automatically operates the handcart 8 to shake from the test position to the working position, if yes, the next step is automatically executed; the third step automatically closes the circuit breaker, completes the one-key power transmission operation and ends; in the process of implementing one-key power cut, the operating device automatically determines whether the circuit breaker is in the open position in the first step, if yes, the one-key intelligent sequence control operation device 3 automatically opens the circuit breaker and stores energy, if not, the next step is automatically executed; the second step automatically determines whether the handcart 8 is not in the test position, if yes, the one-key intelligent sequence control operation device 3 automatically operates the handcart 8 to shake out to the test position, if not, the next step is automatically executed; the third step automatically determines whether the grounding switch 5 is in the closed position, if yes, the one-key intelligent sequence control operation device 3 automatically operates the grounding switch 5, if not, the one-key power cut operation program is directly completed and ends; through the entering of the Wanliyan electric power cloud platform, the authorized personnel can implement remote one-key operation closing and opening, and the entering and exiting of the handcart circuit breaker, the opening and closing of the circuit breaker, the real-time state of the energy storage action of the circuit breaker and the opening and closing of the grounding switch can be visualized.

[0033] The fan 101 is fixedly installed on the inner side of the top of the high-voltage cabinet body 1, the fixed frame 102 is fixedly connected to the outer side of the top of the high-voltage cabinet body 1, the dustproof plate 103 is slidably connected to the inner wall of the fixed frame 102, the fixed blocks 104 are fixedly connected to the outer walls of the two sides of the fixed frame 102, the slide rods 105 are slidably connected to the inner walls of the limiting holes of the fixed blocks 104, the push blocks 107 are fixedly connected to the outer walls of the slide rods 105, the limiting springs 106 are sleeved with the outer walls of the slide rods 105, the push blocks 107 are pushed to move the fixedly connected slide rods 105 to slide along the inner walls of the limiting holes of the fixed blocks 104 and slide out of the inner walls of the limiting holes of the two sides of the dustproof plate 103, so that the dustproof plate 103 can be removed for cleaning and maintenance, the compressed limiting springs 106 are pushed to move the fixedly connected slide rods 105 to slide into the limiting holes of the two sides of the dustproof plate 103, the dustproof plate 103 is limited, and the fixedly installed fan 101 continuously operates to continuously cool the internal operating components.

[0034] Advantages:

[0035] 1. Through the intelligent one-key sequence control device, the handcart circuit breaker of the movable switch cabinet can be controlled in the whole process of power transmission or power cut according to the requirements of the "power five-prevention" program, and the state of the handcart circuit breaker, the circuit breaker, the energy storage, and the grounding switch can be observed through the remote one-key power transmission or power cut sequence control realized by the power cloud platform.

[0036] 2. The one-key intelligent sequence control operation device is provided with a loudspeaker, which can give voice prompts when the staff makes mistakes, so as to avoid the unsafe hidden dangers caused by the operation errors of the one-key intelligent sequence control operation of the movable high-voltage cabinet, such as the failure to close the door of the live interval.

[0037] 3. The movable high-voltage cabinet operated by the one-key intelligent sequence control device can effectively present the working state of the bus, the circuit breaker, the grounding switch, and the handcart in real time through the one-time system simulation board on the operation device.

[0038] 4. The password protection module of the one-key intelligent sequence control operation device can protect the one-key intelligent sequence control operation of the movable high-voltage cabinet from being operated by non-professionals, reduce unnecessary faults and accidents, and realize touch operation.

[0039] 5. The program of the intelligent one-key sequence control device on the movable high-voltage cabinet realizes the "operation ticket" management system, that is, the operator and the guardian must input the password twice before the "one-key closing" and "one-key opening" and other operations can be realized, so as to prevent the occurrence of abnormal operations and electrical safety accidents caused by human errors or the failure to implement the operation ticket management system. Even remote operation also needs to be realized through face recognition, so as to avoid unauthorized personnel operation.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing examples, or make equivalent substitutions for part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A movable high-voltage cabinet capable of automatic power-on and power-off, comprising a high-voltage cabinet body (1), characterized in that: The high-voltage switchgear body (1) is equipped with a one-button intelligent sequential control operation device (3) on the upper front section. The high-voltage switchgear body (1) is hinged with a cabinet door (2) on the front. The high-voltage switchgear body (1) is equipped with a vacuum circuit breaker (4) on the upper front section. The high-voltage switchgear body (1) is equipped with a grounding switch (5) on the lower front section. The high-voltage switchgear body (1) is equipped with a circuit breaker room camera (7) fixedly installed on the upper middle section. The high-voltage switchgear body (1) is equipped with a cable room camera (6) fixedly installed on the lower middle section. The high-voltage switchgear body (1) is equipped with a handcart (8) fixedly installed on the upper rear section. The handcart (8) is equipped with a bottom... There are auxiliary electrical components (9). A fan (101) is fixedly installed on the inner side of the top of the high voltage cabinet body (1). A fixed frame (102) is fixedly connected to the outer side of the top of the high voltage cabinet body (1). A dustproof plate (103) is slidably connected to the inner wall of the fixed frame (102). Fixed blocks (104) are fixedly connected to the outer walls on both sides of the fixed frame (102). A slide rod (105) is slidably connected to the inner wall of the limiting hole opened in the fixed block (104). A push block (107) is fixedly connected to the outer wall of the slide rod (105). A limit spring (106) is sleeved on the outer wall of the slide rod (105). The one-button intelligent sequential control operation device (3) has a built-in 32-bit microcontroller and a switch input module including a handcart position signal, a circuit breaker status signal, a circuit breaker energy storage status signal, a grounding switch status signal, and a live compartment door status signal light; a sensor input module including a high-voltage live sensor and a temperature and humidity sensor; and an LCD touch screen, which are interconnected by electrical signals. The auxiliary electrical components (9) include a handcart position signal, i.e., a handcart auxiliary contact, a circuit breaker status signal, i.e., a circuit breaker auxiliary switch, a circuit breaker energy storage status signal, i.e., a circuit breaker auxiliary switch, a grounding switch status signal, i.e., a grounding switch auxiliary contact, a live compartment door status, i.e., a limit switch, and a high-voltage live sensor.

2. The movable high-voltage cabinet capable of automatically sending and stopping power according to claim 1, characterized in that: The vacuum circuit breaker (4) is assembled with the handcart (8) to form a handcart-type vacuum circuit breaker. The handcart (8) is equipped with an electric operating mechanism consisting of a DC permanent magnet motor, a reducer, a clutch and a transmission gear.

3. The movable high-voltage cabinet capable of automatically sending and stopping power according to claim 1, characterized in that: The circuit breaker room camera (7) is installed inside the high voltage cabinet body (1), and the circuit breaker room camera (7) is aimed at the plum blossom contact of the vacuum circuit breaker and the stationary contact of the switch cabinet.

4. The movable high-voltage cabinet capable of automatically sending and stopping power according to claim 1, characterized in that: The grounding switch (5) is fixedly equipped with an electric operating mechanism, which enables the grounding switch to open and close.

5. The movable high-voltage cabinet capable of automatically sending and stopping power according to claim 1, characterized in that: The cable room camera (6) is fixedly installed inside the high voltage cabinet body (1), and the cable room camera (6) is aimed at the moving and stationary contacts of the grounding switch (5) installed in the cable room.

6. The movable high-voltage cabinet capable of automatically sending and stopping power according to claim 1, characterized in that: The slide bar (105) is slidably connected to the inner wall of the limiting hole opened on both sides of the dustproof plate (103), and the limiting spring (106) is always in a compressed state.

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