High-voltage switch cabinet and control method thereof

Abstract

The invention provides a high-voltage switch cabinet and a control method thereof. The high-voltage switch cabinet comprises a bus mechanism, a switch mechanism, a grounding mechanism, a temperature control mechanism, a humidity mechanism, a position control mechanism, a cabinet body and a pressure relief device, the bus mechanism is used for receiving power output by a power grid. The switch mechanism comprises a circuit breaker handcart and a cable, and the circuit breaker handcart is connected with the bus mechanism and one end of the cable; the temperature control mechanism is used for detecting the equipment temperature at the joint between the bus mechanism and the circuit breaker handcart; the humidity mechanism is used for detecting the equipment humidity at the joint between the bus mechanism and the switch mechanism; the position control mechanism is used for detecting the moving position of the circuit breaker handcart when the circuit breaker handcart is connected with the bus mechanism; the bus mechanism, the switch mechanism, the grounding mechanism, the temperature control mechanism, the humidity mechanism and the position control mechanism are fixed in the cabinet body. The pressure relief device is fixed on the top of the cabinet body. The high-voltage switch cabinet is prevented from being damaged due to high temperature, and the situation that the high-voltage switch cabinet leaks electricity due to too high humidity is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of switchgear for power supply or distribution, and mainly to a switchgear with a pull-out trolley for isolation, and in particular to a high-voltage switch cabinet and a control method thereof. Background Art

[0002] High-voltage switchgear is an important power equipment, mainly used in various links of the power system to ensure the normal transmission and distribution of electric energy. It is an electrical product used for switching, controlling or protecting in the power generation, transmission, distribution, power conversion and consumption of the power system. Its voltage level is between 3.6kV and 550kV.

[0003] However, the inventors have found that the current high-voltage switchgear cannot monitor the temperature and humidity at the connection between the circuit breaker trolley and the busbar, which can easily lead to excessive current or excessive humidity, causing high-temperature damage or leakage of the high-voltage switchgear. Summary of the invention

[0004] The present application provides a high-voltage switch cabinet and a control method thereof, which are used to solve the problem that the high-voltage switch cabinet is damaged by high temperature or has leakage due to excessive current or excessive humidity in the current.

[0005] In a first aspect, the present application provides a high-voltage switchgear, comprising: a busbar mechanism, a switch mechanism, a grounding mechanism, a temperature control mechanism, a humidity mechanism, a position control mechanism, a cabinet body, and a pressure relief device;

[0006] The busbar mechanism is used to receive power output from the power grid;

[0007] The switch mechanism includes a circuit breaker trolley and a cable. The circuit breaker trolley is connected to the busbar mechanism and one end of the cable respectively, and the other end of the cable is used to connect the power distribution equipment; the circuit breaker trolley is used to connect and disconnect the connection between the busbar mechanism and the cable;

[0008] The temperature control mechanism is used to detect the device temperature at the connection between the busbar mechanism and the circuit breaker trolley; the temperature control mechanism cools the busbar mechanism according to the device temperature and / or generates temperature alarm information;

[0009] The humidity mechanism is used to detect the equipment humidity at the connection between the bus mechanism and the switch mechanism; the temperature control mechanism dehumidifies the bus mechanism and / or generates humidity alarm information according to the equipment humidity;

[0010] The position control mechanism is used to detect the moving position of the circuit breaker trolley when it is connected to the bus mechanism; the position control mechanism is used to adjust the distance between the circuit breaker trolley and the bus mechanism according to the moving position;

[0011] The busbar mechanism, switch mechanism, grounding mechanism, temperature control mechanism, humidity mechanism and position control mechanism are fixed inside the cabinet;

[0012] The pressure relief device is fixed on the top of the cabinet. If the pressure relief device determines that the gas pressure inside the cabinet exceeds a preset pressure threshold, the pressure relief device connects the inside of the cabinet with the outside.

[0013] In the above scheme, the temperature control mechanism includes: a temperature detection device, a temperature processor and a temperature control device;

[0014] The temperature detection device is used to detect the busbar temperature at the connection of the busbar;

[0015] The temperature processor is connected to the temperature detection device, and the temperature processor is also connected to the temperature control device;

[0016] If the temperature processor determines that the busbar temperature exceeds a preset temperature threshold, the temperature control device is activated to cool the connection;

[0017] After a preset temperature drop period, if the temperature processor determines that the bus temperature is not lower than the temperature threshold, it generates temperature alarm information.

[0018] In the above solution, the switch mechanism further comprises: a heater;

[0019] The humidity mechanism comprises: a humidity detection device and a humidity processor;

[0020] The humidity detection device is used to detect the busbar humidity at the connection of the busbar;

[0021] The humidity processor is connected to the humidity detection device, and the humidity processor is also connected to the heater;

[0022] If the humidity processor determines that the humidity of the bus exceeds a preset humidity threshold, the heater is activated to dehumidify the connection;

[0023] After a preset dehumidification period, if the humidity processor determines that the bus humidity is not lower than the humidity threshold, it generates humidity alarm information.

[0024] In the above scheme, the position control mechanism includes: a position detection device, a position processor and a position control device;

[0025] The position detection device is used to detect the trolley position of the circuit breaker trolley;

[0026] The position processor is connected to the position detection device, and the position processor is also connected to the position control device;

[0027] If the position processor determines that the position of the circuit breaker trolley exceeds the position threshold, the position processor starts the position control device to adjust the circuit breaker trolley so that the position of the trolley is within the position threshold.

[0028] In the above solution, the pressure relief device is fixed on the top of the cabinet;

[0029] The pressure relief device includes a pressure relief valve and a pressure relief controller;

[0030] The pressure relief valve is fixed on the top of the cabinet, and the pressure relief valve is used to connect the inside and outside of the cabinet;

[0031] The pressure relief controller is connected to the pressure relief valve. If the pressure relief valve determines that the gas pressure inside the cabinet exceeds a preset pressure threshold, the pressure relief valve is started to open.

[0032] In the above scheme, the cabinet includes a busbar room, a trolley room, a cable room, an operation room and an interactive equipment room;

[0033] The busbar mechanism is fixed in the busbar chamber;

[0034] The circuit breaker trolley is movably connected in the trolley chamber;

[0035] One end of the cable is inserted into the trolley compartment and connected to the circuit breaker trolley.

[0036] The other end of the cable is inserted into the cable chamber and connected to the output terminal in the cable chamber; the output terminal is used to connect to the power distribution equipment;

[0037] The grounding switch of the grounding mechanism is fixed in the cable chamber;

[0038] One end of the operating structure of the grounding mechanism is connected to the grounding switch, and the other end of the operating structure is located in the operating room, and the operating structure is used to operate the opening and closing of the grounding switch;

[0039] At least one interactive device is fixed in the interactive device room, and at least one of the interactive devices includes an ammeter, and the ammeter is connected to the switch mechanism.

[0040] In the above scheme, at least one of the interaction devices further comprises: a temperature interaction device, a humidity interaction device, a displacement interaction device and a pressure interaction device;

[0041] The temperature interaction device is connected to the temperature mechanism, and the temperature interaction device is used to display the device temperature;

[0042] The humidity interaction device is connected to the humidity mechanism, and the humidity interaction device is used to display the humidity of the device;

[0043] The displacement interaction device is connected to the displacement mechanism, and the displacement interaction device is used to display the moving position;

[0044] The pressure interaction device is connected to the pressure relief device, and the pressure relief device is used to display the gas pressure.

[0045] In the above scheme, the busbar mechanism includes: a busbar bushing, a main busbar, a branch busbar and a static contact device;

[0046] The busbar bushing is fixed on the side wall of the busbar chamber;

[0047] The main bus is fixed in the bus bushing, one end of the main bus is connected to the high voltage line of the power system, and one end of the main bus is connected to one end of the branch bus;

[0048] The other end of the branch bus is connected to the static contact device, which is used to connect to the circuit breaker trolley and output current to the circuit breaker trolley; wherein the static contact device is the connection between the bus mechanism and the switch mechanism;

[0049] The temperature control mechanism is used to detect the equipment temperature of the static contact device; the temperature control mechanism cools down the bus mechanism according to the equipment temperature and / or generates temperature alarm information.

[0050] In the above scheme, the switch mechanism also includes: a trolley track, a current transformer, a secondary plug and a controller;

[0051] The trolley track is fixed on the trolley bottom plate of the trolley chamber;

[0052] The circuit breaker trolley is movably connected to the trolley track;

[0053] The circuit breaker trolley is also connected to the current transformer; the current transformer is connected to an ammeter, and the ammeter is one of at least one of the interactive devices;

[0054] One end of the secondary plug is connected to the circuit breaker trolley, and the other end of the secondary plug is connected to the controller, and the controller is used to control the moving position of the circuit breaker trolley on the trolley track;

[0055] The heater of the switch mechanism is connected to the circuit breaker trolley, and the heater is used to heat the circuit breaker trolley;

[0056] The position control mechanism is used to detect the moving position of the circuit breaker trolley on the trolley track;

[0057] The position control mechanism is connected to the controller, and is used to adjust the distance between the circuit breaker trolley and the busbar mechanism according to the moving position.

[0058] In a second aspect, the present application provides a control method for a high-voltage switch cabinet, which is applied to the above-mentioned high-voltage switch cabinet;

[0059] The method comprises:

[0060] Starting the movement of the circuit breaker trolley and connecting the circuit breaker trolley to the busbar mechanism so that the busbar mechanism is connected to the cable;

[0061] Starting a temperature mechanism to detect the device temperature at the connection between the bus mechanism and the circuit breaker trolley, and if the temperature mechanism determines that the device temperature exceeds a preset temperature threshold, cooling the bus mechanism and the circuit breaker trolley and / or generating temperature alarm information;

[0062] The humidity mechanism is started to detect the humidity of the equipment at the connection point. If the humidity mechanism determines that the humidity of the equipment exceeds a preset humidity threshold, the bus mechanism and the circuit breaker trolley are dehumidified and / or humidity alarm information is generated;

[0063] The position control mechanism is started to detect the moving position of the circuit breaker trolley when the circuit breaker trolley is connected to the bus mechanism. If the position control mechanism determines that the distance between the circuit breaker trolley and the bus mechanism exceeds a preset position threshold according to the moving position, the circuit breaker trolley is driven to move toward the bus mechanism so that the distance between the circuit breaker trolley and the bus mechanism does not exceed the position threshold.

[0064] The pressure relief device is started to detect the gas pressure in the cabinet. If the pressure relief device determines that the gas pressure in the cabinet exceeds a preset pressure threshold, the connection between the inside of the cabinet and the outside is established.

[0065] The present application provides a high-voltage switchgear and a control method thereof, which configures a busbar mechanism to receive power output by a power grid, and then controls the on-off connection between the power grid and the power distribution equipment through a switch mechanism; and configures a grounding mechanism to ground the busbar mechanism and ensure that the busbar mechanism is not charged when the busbar mechanism is maintained, so as to ensure the personal safety of the maintenance personnel of the busbar mechanism.

[0066] Due to the excessive current of the power output of the power grid or the failure of the busbar mechanism or switch mechanism, the connection is overheated, causing the high-voltage switch cabinet to be damaged by high temperature. Therefore, a temperature control mechanism is set to detect the equipment temperature at the connection between the busbar mechanism and the circuit breaker trolley, and cool it down and alarm when the temperature of the connection is too high, so as to ensure that the temperature of the connection is maintained at a reasonable level, thereby avoiding the high-voltage switch cabinet from being damaged due to high temperature.

[0067] Since the environment where the high-voltage switchgear is located may experience increased humidity, causing leakage of the high-voltage switchgear, a humidity mechanism is set up to detect the equipment humidity at the connection between the busbar mechanism and the switch mechanism, and dehumidify and alarm when the humidity at the connection is too high, so as to avoid leakage of the high-voltage switchgear due to excessive humidity at the connection.

[0068] After the circuit breaker trolley has been used for a long time, due to stains or aging of the equipment, the circuit breaker trolley will not be able to reach the factory position after being driven to move for a certain period of time, resulting in poor contact between the circuit breaker trolley and the busbar mechanism, leading to line failure or even fire. Therefore, a position control mechanism is set to detect the moving position of the circuit breaker trolley when it is connected to the busbar mechanism, and adjust the distance between the circuit breaker trolley and the busbar mechanism according to the moving position to ensure that the circuit breaker trolley can be reliably connected to the busbar mechanism, thereby ensuring the reliability and stability of the connection between the busbar and the power distribution equipment, avoiding poor contact between the short-circuit trolley and the busbar mechanism, and eliminating the risk of line failure and fire.

[0069] When high-temperature and high-pressure gas is generated inside the high-voltage switchgear due to short circuit, insulation aging, human operating errors, etc., the pressure relief device will detect the pressure change and automatically open the pressure relief channel to quickly release the internal pressure, thereby protecting the safety of equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0071] Figure 1 A schematic cross-sectional view of a high-voltage switchgear provided in this application;

[0072] Figure 2 A schematic diagram of the side structure of a high-voltage switchgear provided in this application;

[0073] Figure 3 A flow chart of a control method for a high-voltage switchgear provided in the present application.

[0074] Reference numerals:

[0075] 1: Busbar mechanism;

[0076] 2: Switch mechanism;

[0077] 3: Grounding mechanism;

[0078] 4: Temperature control mechanism;

[0079] 5: Humidity mechanism;

[0080] 6: Position control mechanism;

[0081] 7: Cabinet;

[0082] 8: Pressure relief device;

[0083] 11: Busbar bushing;

[0084] 12: Main busbar;

[0085] 13: branch bus;

[0086] 14: static contact device;

[0087] 21: Circuit breaker trolley;

[0088] 22: Cable;

[0089] 23: Heater;

[0090] 24: Trolley track;

[0091] 25: Current transformer;

[0092] 26: Secondary plug;

[0093] 27: Controller;

[0094] 28: moving contact;

[0095] 31: Earthing switch;

[0096] 32: Operation structure;

[0097] 33: Lightning arrester;

[0098] 34: Ground busbar;

[0099] 311: grounding switch;

[0100] 312: grounding bracket;

[0101] 313: Conductive cable;

[0102] 321: operating axis;

[0103] 322: operating handle;

[0104] 41: Temperature detection equipment;

[0105] 42: Temperature processor;

[0106] 43: Temperature control equipment;

[0107] 51: Humidity detection equipment;

[0108] 52: humidity processor;

[0109] 61: Position detection equipment;

[0110] 62: location processor;

[0111] 63: Position control equipment;

[0112] 71: busbar room;

[0113] 72: Cart room;

[0114] 73: Cable room;

[0115] 74: Operation room;

[0116] 75: Interactive equipment room;

[0117] 76: interactive devices;

[0118] 81: Pressure relief valve;

[0119] 82: Pressure relief controller.

[0120] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0121] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0122] The following specific embodiments are used to describe in detail the technical solutions of the embodiments of the present application and how the technical solutions of the embodiments of the present application solve the current problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0123] Example 1: Please refer to Figure 1 and Figure 2 , the present application provides a high-voltage switchgear, comprising: a busbar mechanism 1, a switch mechanism 2, a grounding mechanism 3, a temperature control mechanism 4, a humidity mechanism 5, a position control mechanism 6, a cabinet 7 and a pressure relief device 8;

[0124] The busbar mechanism 1 is used to receive power output from the power grid;

[0125] The switch mechanism 2 includes a circuit breaker trolley 21 and a cable 22. The circuit breaker trolley 21 is connected to the bus mechanism 1 and one end of the cable 22 respectively, and the other end of the cable 22 is used to connect the power distribution equipment; the circuit breaker trolley 21 is used to connect and disconnect the connection between the bus mechanism 1 and the cable 22;

[0126] The temperature control mechanism 4 is used to detect the equipment temperature at the connection between the busbar mechanism 1 and the circuit breaker trolley 21; the temperature control mechanism 4 cools the busbar mechanism 1 and / or generates temperature alarm information according to the equipment temperature;

[0127] The humidity mechanism 5 is used to detect the humidity of the equipment at the connection between the bus mechanism 1 and the switch mechanism 2; the temperature control mechanism 4 dehumidifies the bus mechanism 1 and / or generates humidity alarm information according to the humidity of the equipment;

[0128] The position control mechanism 6 is used to detect the moving position of the circuit breaker trolley 21 when it is connected to the bus mechanism 1; the position control mechanism 6 is used to adjust the distance between the circuit breaker trolley 21 and the bus mechanism 1 according to the moving position;

[0129] The busbar mechanism 1, the switch mechanism 2, the grounding mechanism 3, the temperature control mechanism 4, the humidity mechanism 5 and the position control mechanism 6 are fixed inside the cabinet 7;

[0130] The pressure relief device 8 is fixed on the top of the cabinet 7 . If the pressure relief device 8 determines that the gas pressure inside the cabinet 7 exceeds a preset pressure threshold, the pressure relief device 8 connects the inside of the cabinet 7 with the outside world.

[0131] In this example, a busbar mechanism 1 is provided to receive the power output by the power grid, and the on / off control between the power grid and the power distribution equipment is realized through the switch mechanism 2; a grounding mechanism 3 is provided to ground the busbar mechanism 1 and ensure that the busbar mechanism 1 is not charged when the busbar mechanism 1 is maintained, so as to ensure the personal safety of the maintenance personnel of the busbar mechanism 1.

[0132] Since the current of the power output by the power grid is too large or the busbar mechanism 1 and the switch mechanism 2 fail, the connection is overheated, causing the high-voltage switch cabinet to be damaged due to high temperature. Therefore, a temperature control mechanism 4 is set to detect the equipment temperature at the connection between the busbar mechanism 1 and the circuit breaker trolley 21, and cool it down and alarm when the temperature of the connection is too high, so as to ensure that the temperature of the connection is maintained at a reasonable level, thereby avoiding the high-voltage switch cabinet from being damaged due to high temperature.

[0133] Since the environment in which the high-voltage switchgear is located may experience increased humidity, causing leakage of the high-voltage switchgear, a humidity mechanism 5 is provided to detect the equipment humidity at the connection between the bus mechanism 1 and the switch mechanism 2, and to dehumidify and alarm when the humidity at the connection is too high, so as to avoid leakage of the high-voltage switchgear due to excessive humidity at the connection.

[0134] After the circuit breaker trolley 21 has been used for a long time, due to stains or equipment aging, the circuit breaker trolley 21 will not be able to reach the position when the circuit breaker trolley is connected to the bus mechanism at the time of leaving the factory after being driven to move for a specific time, thereby causing poor contact between the circuit breaker trolley 21 and the bus mechanism 1, resulting in line failure or even fire. Therefore, a position control mechanism 6 is provided to detect the moving position of the circuit breaker trolley 21 when it is connected to the bus mechanism 1, and adjust the distance between the circuit breaker trolley 21 and the bus mechanism 1 according to the moving position, so as to ensure that the circuit breaker trolley 21 can be reliably connected to the bus mechanism 1, thereby ensuring the reliability and stability of the connection between the bus and the power distribution equipment, avoiding poor contact between the short-circuit trolley and the bus mechanism 1, and thus eliminating the risk of line failure and fire.

[0135] The pressure relief device 8 is a safety device that can automatically start and release the internal pressure when the internal pressure of the high-voltage switch cabinet increases abnormally. When high-temperature and high-pressure gas is generated inside the high-voltage switch cabinet due to short circuit, insulation aging, human operation error, etc., the pressure relief device 8 will detect the pressure change and automatically open the pressure relief channel to quickly release the internal pressure, thereby protecting the safety of equipment and personnel.

[0136] In a preferred embodiment, the temperature control mechanism 4 includes: a temperature detection device 41, a temperature processor 42 and a temperature control device 43;

[0137] The temperature detection device 41 is used to detect the busbar temperature at the connection of the busbar;

[0138] The temperature processor 42 is connected to the temperature detection device 41, and the temperature processor 42 is also connected to the temperature control device 43;

[0139] If the temperature processor 42 determines that the busbar temperature exceeds a preset temperature threshold, the temperature control device 43 is activated to cool the connection;

[0140] After a preset temperature drop period, if the temperature processor 42 determines that the bus temperature is not lower than the temperature threshold, it generates a temperature alarm message;

[0141] The at least one interactive device 76 includes a temperature interactive device 76;

[0142] The temperature processor 42 is also connected to the temperature interaction device 76 , and the temperature processor 42 outputs the device temperature to the temperature interaction device 76 ; the temperature processor 42 is also used to output temperature alarm information to the temperature interaction device 76 .

[0143] In this example, the temperature detection device 41 is a device or equipment for measuring the temperature of an object or environment. They help users monitor and control the temperature by collecting temperature information and converting it into readable data, thereby ensuring the stability and safety of various processes. In this embodiment, the temperature detection device 41 includes one or more of a mercury thermometer, an infrared thermometer, and a resistance thermometer.

[0144] The temperature processor 42 is used to monitor the temperature changes of the hardware components in real time. The temperature processor 42 is also used to send a warning signal when the temperature exceeds a preset temperature threshold. The temperature processor 42 is also used to send a start instruction to the temperature control device 43 according to the bus temperature to start the temperature control device 43 so that the temperature control device 43 adjusts the temperature of the high-voltage switch cabinet to reduce the temperature of the connection to below the temperature threshold.

[0145] The temperature control device 43 is an intelligent device that can automatically adjust the indoor temperature. It monitors the indoor temperature through a sensor and automatically adjusts the cooling or heating equipment according to preset parameters to achieve the purpose of controlling the indoor temperature. The temperature control device includes: a refrigeration air conditioner; the refrigeration air conditioner includes an air conditioner and an outdoor unit, the air conditioner is fixed on the top of the cabinet, the outdoor unit is fixed on the top of the solid outside, and the air conditioner and the air conditioner outdoor unit are connected through an air duct.

[0146] In a preferred embodiment, the switch mechanism 2 further comprises: a heater 23;

[0147] The humidity mechanism 5 comprises: a humidity detection device 51 and a humidity processor 52;

[0148] The humidity detection device 51 is used to detect the busbar humidity at the connection of the busbar;

[0149] The humidity processor 52 is connected to the humidity detection device 51, and the humidity processor 52 is also connected to the heater 23;

[0150] If the humidity processor 52 determines that the busbar humidity exceeds the preset humidity threshold, it starts the heater 23 to dehumidify the connection;

[0151] After a preset dehumidification period, if the humidity processor 52 determines that the bus humidity is not lower than the humidity threshold, it generates humidity alarm information;

[0152] The at least one interactive device 76 includes a humidity interactive device 76;

[0153] The humidity processor 52 is also connected to the humidity interaction device 76 , and the humidity processor 52 outputs the device humidity to the humidity interaction device 76 ; the humidity processor 52 is also used to output humidity alarm information to the humidity interaction device 76 .

[0154] In this example, the humidity detection device 51 is an instrument for measuring the water vapor content in the air or other gases. The main function of the humidity detection device 51 is to measure and display the ambient humidity. They can detect the water vapor content in the air through different sensor technologies (such as capacitive, resistive, thermal conductivity, etc.), and display the measurement results in the form of numbers, charts or pointers. The humidity detection device 51 includes: one or more of a wet-dry bulb hygrometer, a resistive humidity sensor, a capacitive humidity sensor and a dew point meter.

[0155] The wet-bulb hygrometer uses two parallel thermometers, one for measuring air temperature (dry bulb) and the other with a bulb wrapped with a layer of absorbent gauze soaked in distilled water (wet bulb). The wet bulb consumes heat due to surface evaporation, which causes the wet bulb temperature to drop. By measuring the temperature difference between the dry bulb and the wet bulb, the relative humidity of the air can be calculated.

[0156] Resistive humidity sensors are electrical sensors that use a pair of sensitive resistors to measure humidity. When the air humidity changes, the conductive chemicals evaporate or absorb water vapor in the air, causing the resistance value of the component to change, thereby measuring the humidity.

[0157] Capacitive humidity sensors use aluminum electrodes and a very thin aluminum oxide layer to measure air humidity. When the air humidity changes, the dielectric constant of the aluminum oxide layer also changes, causing the capacitance value to change, thereby measuring the humidity.

[0158] Dew point meters are used to measure the dew point temperature in the air, that is, the temperature at which the water vapor in the gas reaches the saturation point. Commonly used dew point meters include condensing mirror dew point meters, capacitive dew point meters and electrolytic dew point meters.

[0159] The humidity processor 52 is used to determine whether the busbar humidity exceeds a preset humidity threshold. The humidity processor 52 is also used to instruct the heater 23 to dehumidify the connection and generate humidity alarm information.

[0160] The heater 23 is a device for heating and dehumidifying the environment. The heater 23 is also provided with one or more of a condensing dehumidifier, a rotary dehumidifier and a liquid dehumidifier to improve the dehumidification level of the heater 23.

[0161] The condensing dehumidifier cools the air to below the dew point through the refrigeration system. The water vapor in the air condenses into water and is discharged outside the machine, thereby reducing the humidity.

[0162] The rotary dehumidifier uses the hygroscopic material on the wheel to absorb moisture in the air, and then discharges the moisture through heating or regeneration process to achieve dehumidification.

[0163] Solution dehumidifiers use hygroscopic solutions to absorb moisture from the air, and then separate the moisture from the solution through a heating or decompression process to achieve dehumidification.

[0164] Optionally, if the temperature processor 42 determines that the bus temperature is lower than a preset low temperature threshold, the heater 23 is started to heat the connection;

[0165] After a preset temperature rise period, if the temperature processor 42 determines that the bus temperature is not higher than the low temperature threshold, it generates a low temperature alarm message;

[0166] The temperature processor 42 is also connected to the temperature interaction device 76 , and the temperature processor 42 outputs the device temperature to the temperature interaction device 76 ; the temperature processor 42 is also used to output temperature alarm information to the temperature interaction device 76 .

[0167] In a low temperature environment, the conductor lines in the high-voltage switch cabinet will lose their elasticity and become fragile and easy to break. This is because the low temperature causes the physical properties of the material to change, thereby affecting its mechanical properties. The insulation performance of electrical components will be significantly reduced, and insulation damage or leakage will easily occur. In addition, low temperature may also affect other performance indicators of electrical components, such as resistance value, capacitance value, etc. The lubrication performance of mechanical moving parts (such as switch mechanism 2, transmission parts, etc.) in the high-voltage switch cabinet will be reduced, and it is easy to fail to start or have difficulty in operation. Therefore, when the temperature is lower than the low temperature threshold, the connection is heated by the heater 23 to eliminate the problems of the conductor line losing elasticity, becoming fragile, the insulation performance degradation, leakage, and the reduction of mechanical lubrication performance.

[0168] In a preferred embodiment, the position control mechanism 6 includes: a position detection device 61, a position processor 62 and a position control device 63;

[0169] The position detection device 61 is used to detect the trolley position of the circuit breaker trolley 21;

[0170] The position processor 62 is connected to the position detection device 61, and the position processor 62 is also connected to the position control device 63;

[0171] If the position processor 62 determines that the position of the circuit breaker trolley 21 exceeds the position threshold, the position control device 63 is started to adjust the circuit breaker trolley 21 so that the position of the trolley is within the position threshold.

[0172] In this example, the position detection device 61 is a device used to obtain the position information of an object or system in a specific space. They convert the position information of the object into a measurable and processable electrical signal or digital signal through different sensing technologies and principles. The position detection device 61 includes: a position sensor and / or a machine vision system.

[0173] Position sensor: includes one or more of photoelectric sensors, Hall sensors, magnetic encoders, laser rangefinders, and ultrasonic sensors. These sensors determine the position of an object by detecting changes in physical quantities (such as light, magnetism, sound, etc.) between the object and the sensor.

[0174] Machine vision systems: use cameras and image processing algorithms to identify and locate objects. Such systems can handle complex scenes and dynamically changing environments.

[0175] The position processor 62 is a hardware or software unit that processes and analyzes the position information obtained by the position detection device 61. The position processor 62 is used to filter, amplify, convert, and process the original signal output by the position sensor to improve the signal-to-noise ratio and accuracy of the signal. The real-time position, speed, acceleration, and other parameters of the object are calculated based on the processed signal. A control strategy is formulated based on the position information and other inputs (such as target position, obstacle information, etc.), and a control instruction is output.

[0176] The position control device 63 is used to send a position adjustment instruction to the circuit breaker trolley 21 according to the instruction of the position processor 62; the position adjustment instruction is used to drive the servo motor or stepper motor of the circuit breaker trolley 21. The servo motor or stepper motor is used to drive the circuit breaker trolley 21 to move on the trolley track 24; the servo motor drives the motor shaft to move at a precise angle or position by receiving the position adjustment instruction; the stepper motor rotates or moves the motor shaft at a fixed step length through the position adjustment instruction. Among them, the position control device 63 is connected to the circuit breaker trolley 21.

[0177] In a preferred embodiment, the pressure relief device 8 includes a pressure relief valve 81 and a pressure relief controller 82;

[0178] The pressure relief valve 81 is fixed on the top of the cabinet 7, and the pressure relief valve 81 is used to connect the inside and outside of the cabinet 7;

[0179] The pressure relief controller 82 is connected to the pressure relief valve 81 . If the pressure relief valve 81 determines that the gas pressure inside the cabinet 7 exceeds a preset pressure threshold, the pressure relief valve 81 is started to open.

[0180] In this example, the pressure relief controller 82 is used to detect the gas pressure inside the cabinet 7. The pressure relief controller 82 is connected to the pressure relief valve 81. If the pressure relief controller 82 determines that the gas pressure inside the cabinet 7 exceeds the preset pressure threshold, the pressure relief valve 81 is started to open, so that the gas in the high-voltage switch cabinet leaks to the outside. Therefore, by releasing the internal pressure in time, the pressure relief device 8 can reduce the incidence of internal faults in the high-voltage switch cabinet, thereby improving the operational reliability of the equipment. Reduce equipment damage and failures caused by excessive internal pressure, thereby reducing the cost of equipment maintenance and replacement.

[0181] A pressure sensor, a pressure transmitter or a gas pressure detector is used as the pressure relief controller 82 .

[0182] A pressure sensor is a device that can sense gas pressure and convert it into a measurable electrical signal. Depending on the conversion principle, pressure sensors can be divided into various types such as resistive, capacitive, and piezoelectric.

[0183] A pressure transmitter is a device that converts gas pressure into a standard electrical signal (such as 420mA, 010V, etc.) and outputs it. It usually consists of two parts: a pressure sensor and a signal processing circuit.

[0184] Gas pressure detector is an instrument specially used to detect gas pressure, which usually has the characteristics of high precision, high stability and easy operation. It can measure gas pressure in different ranges as needed, and has functions such as alarm and recording.

[0185] In a preferred embodiment, the cabinet 7 includes a busbar room 71, a trolley room 72, a cable room 73, an operation room 74 and an interactive equipment room 75;

[0186] The busbar mechanism 1 is fixed in the busbar chamber 71;

[0187] The circuit breaker trolley 21 is movably connected in the trolley chamber 72;

[0188] One end of the cable 22 is inserted into the trolley chamber 72 and connected to the circuit breaker trolley 21.

[0189] The other end of the cable 22 is inserted into the cable chamber 73 and connected to the output terminal in the cable chamber 73; the output terminal is used to connect to the power distribution equipment;

[0190] The grounding switch 31 of the grounding mechanism 3 is fixed in the cable chamber 73;

[0191] One end of the operating structure 32 of the grounding mechanism 3 is connected to the grounding switch 31, and the other end of the operating structure 32 is located in the operating room 74. The operating structure 32 is used to operate the grounding switch 31 to open and close;

[0192] At least one interactive device 76 is fixed in the interactive device room 75 . The at least one interactive device 76 includes an ammeter, and the ammeter is connected to the switch mechanism 2 .

[0193] In this example, the busbar chamber 71 is mainly set up for installing busbar copper bars, including branch busbars 13, main busbars 12, busbar bushings 11, some contact devices, etc. The busbar chamber 71 is a pipeline connecting different power equipment, through which signals can be transmitted, so that the equipment can work together.

[0194] The busbar chamber 71 is provided with a circuit breaker, which is connected to the main busbar 12 . When the current intensity of the main busbar 12 reaches a preset circuit-breaking value, the short-circuit risk of the main busbar 12 is eliminated.

[0195] The busbar room 71 is provided with a busbar protection device, which is connected to the main busbar 12. The busbar protection device is a device specifically used to protect the busbar. The busbar protection device includes multiple protection modes such as busbar differential protection and busbar overcurrent protection. The busbar protection device can monitor the current and voltage on the busbar in real time. When a short circuit fault is detected, it will act quickly to cut off the faulty busbar to prevent the fault from expanding.

[0196] The trolley chamber 72 is used to accommodate the circuit breaker trolley 21 and provide space for the movement and stop of the circuit breaker trolley 21 .

[0197] The cable chamber 73 is used to provide space for the cable 22 and the grounding switch 31. The cable 22 and the grounding switch 31 are isolated from the circuit breaker trolley 21 to ensure that the circuit breaker trolley 21 does not contact the cable 22 and the grounding switch 31 when moving, so that the busbar mechanism 1 and the cable 22 will not be connected when the circuit breaker trolley 21 does not contact the connection point, thereby ensuring the reliability of the on-off control between the busbar mechanism 1 and the cable 22.

[0198] Interactive equipment room 75 is used to equip current, voltage meters and other testing instruments, which can directly reflect the operating status of high and low voltage switch cabinets and improve the efficiency of on-site monitoring. Interactive equipment room 75 is also used to equip remote control central control system, which can realize remote control of high and low voltage switch cabinets, which is more convenient and quick.

[0199] The operating room 74 is used to place the operating structure 32. Workers can operate the grounding switch 31 in the operating room 74 to avoid the problem of personal injury caused by direct contact between the workers and the grounding switch 31.

[0200] Specifically, the busbar chamber 71 and the trolley chamber 72 are located at the same height of the cabinet 7 to ensure that the circuit breaker trolley 21 can control the on / off between the busbar mechanism 1 and the cable 22 by translation;

[0201] The cable chamber 73 is located below the busbar chamber 71 to facilitate the connection between the grounding switch 31 and the busbar mechanism 1 and the connection between the cable 22 and the breaker trolley;

[0202] By setting the operating room 74 below the trolley room 72, the operating structure 32 corresponds to the grounding switch 31 and operates the grounding switch 31;

[0203] By arranging the interactive equipment room 75 above the trolley room 72 , the interactive equipment 76 in the interactive equipment room 75 is kept away from the bus mechanism 1 and the cable 22 , thereby preventing the strong current in the bus mechanism 1 and the cable 22 from interfering with the interactive equipment 76 and damaging the interactive equipment 76 .

[0204] Specifically, the grounding switch 31 includes: a grounding switch 311, a grounding bracket 312 and a conductive cable 313;

[0205] The grounding switch 311 is fixed on the grounding bracket 312;

[0206] The grounding terminal is connected to the stationary contact device 14 of the busbar mechanism 1 through a conductive cable 313 .

[0207] In this example, the bracket is used to support the entire framework of the grounding switch 31, which is usually made of thin steel plates that are bent and welded, and has sufficient strength and rigidity. The grounding knife 311 is used to realize the closing and opening operations of the grounding switch 31. The conductive cable 313 is used for the electrical connection between the grounding switch 31 and other electrical equipment.

[0208] The operating structure 32 includes: an operating shaft 321 and an operating handle 322;

[0209] One end of the operating shaft 321 is connected to the grounding switch 311;

[0210] The other end of the operating shaft 321 is connected to the operating handle 322 .

[0211] In this example, the operating shaft 321 is connected to the operating knife switch, and the operating shaft 321 closes and opens the operating knife switch by rotating.

[0212] In a preferred embodiment, at least one of the interaction devices further comprises: a temperature interaction device, a humidity interaction device, a displacement interaction device, and a pressure interaction device;

[0213] The temperature interaction device is connected to the temperature mechanism, and the temperature interaction device is used to display the device temperature;

[0214] The humidity interaction device is connected to the humidity mechanism, and the humidity interaction device is used to display the humidity of the device;

[0215] The displacement interaction device is connected to the displacement mechanism, and the displacement interaction device is used to display the moving position;

[0216] The pressure interaction device is connected to the pressure relief device, and the pressure relief device is used to display the gas pressure.

[0217] Optionally, the temperature processor is further used to output the temperature alarm information to the temperature interaction device.

[0218] The humidity processor is also used to output the humidity alarm information to the humidity interaction device.

[0219] The displacement processor is also used to output the position alarm information to the position interaction device.

[0220] The pressure relief controller is also used to output the pressure alarm information to the pressure interaction device.

[0221] In this example, a liquid crystal screen is used as a temperature interaction device, a humidity interaction device, a position interaction device, and a pressure interaction device.

[0222] In a preferred embodiment, the busbar mechanism 1 further includes: a busbar bushing 11, a main busbar 12, a branch busbar 13 and a static contact device 14;

[0223] The busbar bushing 11 is fixed on the side wall of the busbar chamber 71;

[0224] The main busbar 12 is fixed in the busbar bushing 11, one end of the main busbar 12 is connected to the high voltage line of the power system, and one end of the main busbar 12 is connected to one end of the branch busbar 13;

[0225] The other end of the branch bus 13 is connected to a static contact device 14, which is used to connect to the circuit breaker trolley 21 and output current to the circuit breaker trolley 21; wherein the static contact device 14 is the connection between the bus mechanism 1 and the switch mechanism 2;

[0226] The temperature control mechanism 4 is used to detect the equipment temperature of the stationary contact device 14; the temperature control mechanism 4 cools down the bus mechanism 1 and / or generates temperature alarm information according to the equipment temperature.

[0227] In this example, the busbar bushing 11 is used to protect the main busbar 12. The main busbar 12 plays the role of collecting, distributing and transmitting electric energy in the power system, but it may be affected by factors such as the environment and temperature during operation, and may even generate high heat and electrodynamic effects due to short circuits. In this embodiment, the busbar bushing 11 is made of insulating material (the insulating material is ceramic or engineering plastic), which is used to provide insulation protection to prevent the busbar from being directly exposed to the external environment, thereby ensuring the safe and stable operation of the busbar. In addition, the busbar bushing 11 can also effectively prevent people from accidentally touching the live busbar, thereby improving the safety of the power system.

[0228] The main bus 12 is used to connect the high-voltage lines of the power system to receive the high-voltage current of the power system, ensuring that each part of the power system can normally receive and transmit the required electrical energy.

[0229] The branch bus 13 is used to shunt the current from the main bus 12 to the branch conductor. The branch bus 13 can connect the main bus 12 with the branch conductor to realize the branching and regulation of the current, thereby improving the flexibility and stability of the power system. For example, the branch bus 13800 can carry a maximum current of 800A and is widely used in large power systems. The role of the branch bus 13 is to make the control of the power system simpler and more flexible to meet the needs of different loads.

[0230] The static contact device 14 is a wiring device. The static contact device 14 uses direct welding or threaded connection to branch the busbar 13. It has the characteristics of simple structure and wide application range. Its stability and reliability are crucial to ensure the long-term stable operation of the circuit. The static contact device 14 is opposite to the moving contact 28. The moving contact 28 is suitable for circuit scenarios with frequent plugging and unplugging, while the static contact is more suitable for long-term fixed circuits. The moving contact 28 is fixed on the circuit breaker trolley 21 to connect the branch busbar 13 and the cable 22.

[0231] In this embodiment, the moving contact 28 is used to connect with the stationary contact device 14 and the cable 22 respectively.

[0232] In a preferred embodiment, the switch mechanism 2 further includes: a trolley track 24, a current transformer 25, a secondary plug 26 and a controller 27;

[0233] The trolley track 24 is fixed to the trolley bottom plate of the trolley chamber 72;

[0234] The circuit breaker trolley 21 is movably connected to the trolley track 24;

[0235] The circuit breaker trolley 21 is also connected to a current transformer 25; the current transformer 25 is connected to an ammeter, which is one of the at least one interactive device 76;

[0236] One end of the secondary plug 26 is connected to the circuit breaker trolley 21, and the other end of the secondary plug 26 is connected to the controller 27. The controller 27 is used to control the moving position of the circuit breaker trolley 21 on the trolley track 24;

[0237] The heater 23 is connected to the circuit breaker trolley 21, and the heater 23 is used to heat the circuit breaker trolley 21;

[0238] The position control mechanism 6 is used to detect the moving position of the circuit breaker trolley 21 on the trolley track 24;

[0239] The position control mechanism 6 is connected to the controller 27 , and is used to adjust the distance between the circuit breaker trolley 21 and the busbar mechanism 1 according to the moving position.

[0240] In this example, the trolley track 24 refers to a structure installed in the cabinet 7 for supporting and guiding the smooth movement of the trolley (a movable electrical component unit, such as the circuit breaker trolley 21). In this embodiment, the trolley track 24 is made of steel or aluminum or aluminum alloy, and the trolley track 24 has a strong load-bearing capacity and wear resistance. The trolley track 24 includes an upper guide rail and a lower guide rail; the upper guide rail is used to connect or contact with the side or top of the circuit breaker trolley 21 to stabilize the circuit breaker trolley 21; the lower guide rail is used to connect or contact with the bottom supporting the circuit breaker trolley 21 to support and guide the circuit breaker trolley 21.

[0241] The current transformer 25 (CT for short) is an electric power device that works on the principle of electromagnetic induction, and is mainly used to convert the large current on the primary side into the small current on the secondary side for measurement. This conversion not only facilitates the measurement of the current, but also improves the safety and reliability of the measurement. In this embodiment, the current transformer 25 is connected to the moving contact 28 of the circuit breaker trolley 21 to achieve the technical effect of receiving the current of the main bus 12.

[0242] Optionally, the current transformer 25 is connected to an ammeter, and the ammeter is used to reflect the current received at the connection. The ammeter room is one of the at least one interactive device 76 in the interactive device room 75.

[0243] The secondary plug 26 is an interface between the circuit breaker and the control circuit and the protection circuit, and is used to ensure the normal operation and safe operation of the circuit breaker. The secondary plug 26 includes a control power supply, a signal feedback, a protection relay, and an indicator light.

[0244] Control power on and off: The control power can be connected to the circuit breaker trolley 21 through the secondary plug 26. The circuit breaker trolley 21 moves on the trolley track 24 through the power provided by the control power to achieve contact and separation with the busbar mechanism 1. The contact between the circuit breaker trolley 21 and the busbar mechanism 1 is in the open state, and the separation between the circuit breaker trolley 21 and the busbar mechanism 1 is in the closed state.

[0245] Signal feedback: The status of the circuit breaker (such as switch status, fault status, etc.) can be fed back to the control system through the secondary plug 26.

[0246] Protection circuit: The protection relay is connected to the circuit breaker through the secondary plug 26. Once a fault occurs, the protection relay will send a command through the secondary plug 26 to quickly cut off the fault circuit.

[0247] Indicator lights and alarms: Through the secondary plug 26, indicator lights and alarm devices can be connected to provide visual or audible prompts when a circuit breaker fault or operation occurs.

[0248] Controller 27 is a device used to manage and control the switching operation, status monitoring and protection functions of the circuit breaker. Controller 27 plays an important role in the circuit breaker system to ensure the safe, reliable and efficient operation of the system.

[0249] Switch operation control: The controller 27 is responsible for issuing closing and opening instructions to control the switch operation of the circuit breaker, ensuring that the sequence and logic of the switch operation are correct to avoid misoperation.

[0250] Status monitoring: Real-time monitoring of the operating status of the circuit breaker, such as closing, opening, fault status, etc. Provide status feedback signals for operators or control systems to monitor.

[0251] Protection function: By monitoring current, voltage and other parameters, it can determine whether the power system has a fault (such as short circuit, overload, etc.). In the event of a fault, it can quickly issue a trip command to cut off the fault circuit and protect the safety of equipment and systems.

[0252] Communication function: The controller 27 usually has a communication interface, which can exchange data with the host computer, protection device, remote control system, etc. It supports multiple communication protocols, such as MODBUS, DNP3, etc., which is easy to integrate into the smart grid and automation system.

[0253] Data recording and analysis: Record the circuit breaker's operation history, fault events, operating parameters and other data. Through data analysis, it helps operation and maintenance personnel to diagnose faults, make maintenance decisions and optimize the system.

[0254] Interface and human-computer interaction: The controller 27 is usually equipped with an operation panel, display or touch screen to facilitate local operation and parameter setting by the operator. A friendly human-computer interaction interface is provided to display key parameters and status information. The controller 27 of the circuit breaker trolley 21 plays a key role in the entire power system, ensuring accurate operation of the circuit breaker and reliable protection functions, and providing guarantee for the safe and stable operation of the power system.

[0255] In a preferred embodiment, the grounding mechanism 3 includes: a grounding switch 31, a lightning arrester 33 and a grounding busbar 34;

[0256] The grounding switch 31 is connected to the busbar mechanism 1;

[0257] One end of the lightning arrester 33 is connected to the grounding switch 31;

[0258] The other end of the lightning arrester 33 is connected to the ground busbar 34 .

[0259] In this example, the arrester 33 is an electrical device used to protect electrical equipment from high transient overvoltage hazards and limit the follow-through time (often also limit the follow-through amplitude). The arrester 33 is used to limit the high voltage of lightning that invades power lines and signal transmission lines to a certain range, thereby protecting electrical equipment from being broken down by high voltage shocks. Among them, the zinc oxide arrester 33 is a lightning protection device with superior protection performance, light weight, pollution resistance, and stable performance. It mainly uses the good nonlinear volt-ampere characteristics of zinc oxide to achieve the protection effect. When the normal operating voltage acts on the arrester 33, the current flowing through the arrester 33 is extremely small (microamperes or milliamperes); and when the overvoltage acts, the resistance drops sharply, discharging the energy of the overvoltage, thereby achieving the protection effect.

[0260] The grounding busbar 34 is a connection line that connects the current or voltage to the grounding grid, or a conductor that connects the grounding electrodes into one. It is a public grounding terminal specially used in a floor or building. The grounding busbar 34 is used to reliably connect the metal casing of the electrical equipment, the metal frame of the distribution device, etc. with the grounding electrode to ensure the normal operation of the electrical equipment and personal safety. At the same time, it can also quickly conduct the fault current to the ground when the electrical equipment leaks or fails to prevent electric shock accidents.

[0261] Example 2: Please refer to Figure 1-Figure 3 , the present application provides a control method for a high-voltage switch cabinet, which is applied to any high-voltage switch cabinet in claims 1-9;

[0262] Methods include:

[0263] S1: Start the movement of the circuit breaker trolley 21 and connect the circuit breaker trolley 21 to the busbar mechanism 1, so that the busbar mechanism 1 and the cable 22 are connected;

[0264] S2: Start the temperature mechanism to detect the device temperature at the connection between the bus mechanism 1 and the circuit breaker trolley 21. If the temperature mechanism determines that the device temperature exceeds a preset temperature threshold, the bus mechanism 1 and the circuit breaker trolley 21 are cooled and / or a temperature alarm message is generated;

[0265] S3: Start the humidity mechanism 5 to detect the humidity of the equipment at the connection. If the humidity mechanism 5 determines that the humidity of the equipment exceeds the preset humidity threshold, the bus mechanism 1 and the circuit breaker trolley 21 are dehumidified and / or humidity alarm information is generated;

[0266] S4: starting the position control mechanism 6 to detect the moving position of the circuit breaker trolley 21 when the circuit breaker trolley 21 is connected to the bus mechanism 1. If the position control mechanism 6 determines that the distance between the circuit breaker trolley 21 and the bus mechanism 1 exceeds the preset position threshold according to the moving position, the circuit breaker trolley 21 is driven to move toward the bus mechanism 1 so that the distance between the circuit breaker trolley 21 and the bus mechanism 1 does not exceed the position threshold;

[0267] S5: starting the pressure relief device 8 to detect the gas pressure in the cabinet. If the pressure relief device 8 determines that the gas pressure inside the cabinet 7 exceeds a preset pressure threshold, the pressure relief device 8 connects the inside of the cabinet 7 with the outside.

[0268] Preferably, starting the movement of the circuit breaker trolley 21 and connecting the circuit breaker trolley 21 to the busbar mechanism 1 so that the busbar mechanism 1 and the cable 22 are connected includes:

[0269] S11: Control the controller 27 of the switch mechanism 2 to generate a start command, so that the controller 27 continuously sends a drive signal to the circuit breaker trolley 21 through the secondary plug 26 of the switch mechanism 2;

[0270] S12: the circuit breaker trolley 21 continues to move toward the stationary contact device 14 of the busbar mechanism 1 according to the driving signal;

[0271] S13: When the time for the controller 27 to send the driving signal to the circuit breaker trolley 21 reaches the preset driving time limit, the controller 27 stops sending the driving signal to the circuit breaker trolley 21, so that the moving contact 28 of the circuit breaker trolley 21 is connected to the static contact device 14, the cable 22 and the current transformer 25.

[0272] Preferably, the temperature mechanism is started to detect the device temperature at the connection between the bus mechanism 1 and the circuit breaker trolley 21. If the temperature mechanism determines that the device temperature exceeds a preset temperature threshold, the bus mechanism 1 and the circuit breaker trolley 21 are cooled and / or temperature alarm information is generated, including:

[0273] S21: Start the temperature detection device 41 of the temperature mechanism to detect the device temperature at the connection between the busbar mechanism 1 and the circuit breaker trolley 21, and the temperature detection device 41 sends the device temperature to the temperature processor 42 of the temperature mechanism.

[0274] S22: If the temperature processor 42 determines that the bus temperature exceeds the preset temperature threshold, it sends a temperature reduction instruction to the temperature control device 43 of the temperature mechanism.

[0275] S23: The temperature control device 43 cools down the connection point according to the cooling instruction.

[0276] S24: If the temperature processor 42 determines that the temperature control device 43 has cooled down for a temperature-reducing period that reaches a threshold, the temperature processor 42 triggers the temperature detection device 41 to detect the device temperature at the connection point again.

[0277] S25: If the temperature processor 42 determines that the re-detected device temperature is lower than the preset temperature threshold, the temperature processor 42 sends a temperature reduction shutdown instruction to the temperature control device 43, and the temperature control device 43 stops working according to the temperature reduction shutdown instruction.

[0278] S26 : If the temperature processor 42 determines that the temperature of the re-detected temperature device is not lower than the temperature threshold, the temperature processor 42 generates temperature alarm information and outputs the temperature alarm information to the temperature interaction device 76 .

[0279] Optionally, after the temperature detection device 41 of the temperature mechanism is started to detect the device temperature at the connection between the bus mechanism 1 and the circuit breaker trolley 21, and the temperature detection device 41 sends the device temperature to the temperature processor 42 of the temperature mechanism, the method further includes:

[0280] S27: If the temperature processor 42 determines that the bus temperature is lower than the preset low temperature threshold, the heater 23 is started to heat the connection;

[0281] S28: After the preset heating period, if the temperature processor 42 determines that the bus temperature is higher than the preset low temperature threshold, it sends a heating shutdown instruction to the heater 23, and the heater 23 stops working according to the heating shutdown instruction;

[0282] S29 : After the temperature rise period, if the temperature processor 42 determines that the bus temperature is not higher than the low temperature threshold, it generates low temperature alarm information and outputs the low temperature alarm information to the temperature interaction device 76 .

[0283] Preferably, the humidity mechanism 5 is started to detect the humidity of the equipment at the connection. If the humidity mechanism 5 determines that the humidity of the equipment exceeds a preset humidity threshold, the bus mechanism 1 and the circuit breaker trolley 21 are dehumidified and / or humidity alarm information is generated, including:

[0284] S31 : starting the humidity detection device 51 of the humidity mechanism 5 to detect the equipment humidity at the connection between the busbar mechanism 1 and the circuit breaker trolley 21 , and the humidity detection device 51 sends the equipment humidity to the humidity processor 52 of the humidity mechanism 5 .

[0285] S32 : If the humidity processor 52 determines that the bus humidity exceeds the preset humidity threshold, it sends a dehumidification instruction to the heater 23 of the humidity mechanism 5 .

[0286] S33: The heater 23 dehumidifies the connection point according to the dehumidification instruction.

[0287] S34: If the humidity processor 52 determines that the dehumidification time of the heater 23 has reached the preset dehumidification period, the humidity processor 52 triggers the humidity detection device 51 to detect the device humidity at the connection again.

[0288] S35: When the humidity processor 52 determines that the humidity of the device detected again is lower than the preset humidity threshold, the humidity processor 52 sends a dehumidification shutdown instruction to the heater 23, and the heater 23 stops working according to the dehumidification shutdown instruction.

[0289] S36 : If the humidity processor 52 determines that the humidity of the re-detected device is not lower than the humidity threshold, the humidity processor 52 generates humidity alarm information and outputs the humidity alarm information to the humidity interaction device 76 .

[0290] Preferably, the position control mechanism 6 is started to detect the moving position of the circuit breaker trolley 21 when the circuit breaker trolley 21 is connected to the bus mechanism 1. If the position control mechanism 6 determines that the distance between the circuit breaker trolley 21 and the bus mechanism 1 exceeds a preset position threshold according to the moving position, the circuit breaker trolley 21 is driven to move toward the bus mechanism 1 so that the distance between the circuit breaker trolley 21 and the bus mechanism 1 does not exceed the position threshold, including:

[0291] S41: in response to the controller 27 stopping sending the driving signal to the circuit breaker trolley 21, the position detection device 61 of the position control mechanism 6 detects the trolley position of the circuit breaker trolley 21;

[0292] S42: If the position processor 62 determines that the distance between the trolley position and the static contact device 14 of the busbar mechanism 1 exceeds the position threshold, the position control device 63 is started to send a non-arrival signal to the circuit breaker trolley 21;

[0293] S43: The circuit breaker trolley 21 sends a non-arrival signal to the controller 27, and the controller 27 sends a secondary driving signal to the circuit breaker trolley 21 according to the non-arrival signal;

[0294] S44: the circuit breaker trolley 21 continues to move toward the static contact device 14 of the busbar mechanism 1 according to the secondary drive signal;

[0295] S45: When the time for the controller 27 to send the driving signal to the circuit breaker trolley 21 reaches the preset secondary driving time limit, the controller 27 stops sending the driving signal to the circuit breaker trolley 21.

[0296] S46: The position processor 62 triggers the position detection device 61 to re-detect the trolley position of the circuit breaker trolley 21; if the position processor 62 determines that the distance between the re-detected trolley position and the static contact device 14 of the busbar mechanism 1 exceeds the position threshold, it generates a position alarm message and sends the position alarm message to the position interaction device 76.

[0297] Preferably, the pressure relief device 8 is started to detect the gas pressure in the cabinet. If the pressure relief device 8 determines that the gas pressure inside the cabinet 7 exceeds a preset pressure threshold, the connection between the inside of the cabinet 7 and the outside is connected, including:

[0298] S51: Start the pressure relief controller of the pressure relief device to detect the gas pressure in the cabinet;

[0299] S52: If the pressure relief controller 82 determines that the gas pressure inside the cabinet exceeds a preset pressure threshold, the pressure relief valve 81 is started to open.

[0300] S53: If the pressure relief controller 82 determines that the gas pressure in the cabinet still exceeds the pressure threshold after the preset pressure relief period, it generates pressure alarm information and sends the pressure alarm information to the pressure interaction device.

[0301] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0302] Those skilled in the art will readily come to other embodiments of the present application embodiments after considering the specification and practicing the invention disclosed herein. The present application embodiments are intended to cover any variations, uses or adaptations of the present application embodiments, which follow the general principles of the present application embodiments and include common knowledge or customary technical means in the art that are not disclosed in the present application embodiments. The specification and embodiments are intended to be exemplary only, and the true scope and spirit of the present application embodiments are indicated by the following claims.

[0303] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the appended claims.

Claims

1. A high voltage switch cabinet, characterized in that: include: Busbar mechanism, switch mechanism, grounding mechanism, temperature control mechanism, humidity mechanism, position control mechanism, cabinet and pressure relief device; The busbar mechanism is used to receive power output from the power grid; The switch mechanism includes a circuit breaker trolley and a cable. The circuit breaker trolley is connected to the busbar mechanism and one end of the cable respectively, and the other end of the cable is used to connect the power distribution equipment; the circuit breaker trolley is used to connect and disconnect the connection between the busbar mechanism and the cable; The temperature control mechanism is used to detect the device temperature at the connection between the busbar mechanism and the circuit breaker trolley; the temperature control mechanism cools the busbar mechanism according to the device temperature and / or generates temperature alarm information; The humidity mechanism is used to detect the equipment humidity at the connection between the bus mechanism and the switch mechanism; the temperature control mechanism dehumidifies the bus mechanism and / or generates humidity alarm information according to the equipment humidity; The position control mechanism is used to detect the moving position of the circuit breaker trolley when it is connected to the bus mechanism; the position control mechanism is used to adjust the distance between the circuit breaker trolley and the bus mechanism according to the moving position; The busbar mechanism, switch mechanism, grounding mechanism, temperature control mechanism, humidity mechanism and position control mechanism are fixed inside the cabinet; The pressure relief device is fixed on the top of the cabinet. If the pressure relief device determines that the gas pressure inside the cabinet exceeds a preset pressure threshold, the pressure relief device connects the inside of the cabinet with the outside.

2. The high voltage switch cabinet according to claim 1, characterized in that: The temperature control mechanism includes: a temperature detection device, a temperature processor and a temperature control device; The temperature detection device is used to detect the busbar temperature at the connection of the busbar; The temperature processor is connected to the temperature detection device, and the temperature processor is also connected to the temperature control device; If the temperature processor determines that the busbar temperature exceeds a preset temperature threshold, the temperature control device is activated to cool the connection; After a preset temperature drop period, if the temperature processor determines that the bus temperature is not lower than the temperature threshold, it generates temperature alarm information.

3. The high voltage switch cabinet according to claim 1, characterized in that: The switch mechanism further comprises: a heater; The humidity mechanism comprises: a humidity detection device and a humidity processor; The humidity detection device is used to detect the busbar humidity at the connection of the busbar; The humidity processor is connected to the humidity detection device, and the humidity processor is also connected to the heater; If the humidity processor determines that the humidity of the bus exceeds a preset humidity threshold, the heater is activated to dehumidify the connection; After a preset dehumidification period, if the humidity processor determines that the bus humidity is not lower than the humidity threshold, it generates humidity alarm information.

4. The high voltage switch cabinet according to claim 1, characterized in that: The position control mechanism includes: a position detection device, a position processor and a position control device; The position detection device is used to detect the trolley position of the circuit breaker trolley; The position processor is connected to the position detection device, and the position processor is also connected to the position control device; If the position processor determines that the position of the circuit breaker trolley exceeds the position threshold, the position processor starts the position control device to adjust the circuit breaker trolley so that the position of the trolley is within the position threshold.

5. The high voltage switch cabinet according to claim 1, characterized in that: The pressure relief device is fixed on the top of the cabinet; The pressure relief device includes a pressure relief valve and a pressure relief controller; The pressure relief valve is fixed on the top of the cabinet, and the pressure relief valve is used to connect the inside and outside of the cabinet; The pressure relief controller is connected to the pressure relief valve. If the pressure relief valve determines that the gas pressure inside the cabinet exceeds a preset pressure threshold, the pressure relief valve is started to open.

6. The high voltage switch cabinet according to claim 1, characterized in that: The cabinet includes a busbar room, a trolley room, a cable room, an operation room and an interactive equipment room; The busbar mechanism is fixed in the busbar chamber; The circuit breaker trolley is movably connected in the trolley chamber; One end of the cable is inserted into the trolley compartment and connected to the circuit breaker trolley. The other end of the cable is inserted into the cable chamber and connected to the output terminal in the cable chamber; the output terminal is used to connect to the power distribution equipment; The grounding switch of the grounding mechanism is fixed in the cable chamber; One end of the operating structure of the grounding mechanism is connected to the grounding switch, and the other end of the operating structure is located in the operating room, and the operating structure is used to operate the opening and closing of the grounding switch; At least one interactive device is fixed in the interactive device room, and at least one of the interactive devices includes an ammeter, and the ammeter is connected to the switch mechanism.

7. The high voltage switch cabinet according to claim 6, characterized in that: At least one of the interaction devices further comprises: a temperature interaction device, a humidity interaction device, a displacement interaction device, and a pressure interaction device; The temperature interaction device is connected to the temperature mechanism, and the temperature interaction device is used to display the device temperature; The humidity interaction device is connected to the humidity mechanism, and the humidity interaction device is used to display the humidity of the device; The displacement interaction device is connected to the displacement mechanism, and the displacement interaction device is used to display the moving position; The pressure interaction device is connected to the pressure relief device, and the pressure relief device is used to display the gas pressure.

8. The high voltage switch cabinet according to claim 6, characterized in that: The busbar mechanism comprises: a busbar bushing, a main busbar, a branch busbar and a static contact device; The busbar bushing is fixed on the side wall of the busbar chamber; The main bus is fixed in the bus bushing, one end of the main bus is connected to the high voltage line of the power system, and one end of the main bus is connected to one end of the branch bus; The other end of the branch bus is connected to the static contact device, which is used to connect to the circuit breaker trolley and output current to the circuit breaker trolley; wherein the static contact device is the connection between the bus mechanism and the switch mechanism; The temperature control mechanism is used to detect the equipment temperature of the static contact device; the temperature control mechanism cools down the bus mechanism according to the equipment temperature and / or generates temperature alarm information.

9. The high voltage switch cabinet according to claim 6, characterized in that: The switch mechanism also includes: a trolley track, a current transformer, a secondary plug and a controller; The trolley track is fixed on the trolley bottom plate of the trolley chamber; The circuit breaker trolley is movably connected to the trolley track; The circuit breaker trolley is also connected to the current transformer; the current transformer is connected to an ammeter, and the ammeter is one of at least one of the interactive devices; One end of the secondary plug is connected to the circuit breaker trolley, and the other end of the secondary plug is connected to the controller, and the controller is used to control the moving position of the circuit breaker trolley on the trolley track; The heater of the switch mechanism is connected to the circuit breaker trolley, and the heater is used to heat the circuit breaker trolley; The position control mechanism is used to detect the moving position of the circuit breaker trolley on the trolley track; The position control mechanism is connected to the controller, and is used to adjust the distance between the circuit breaker trolley and the busbar mechanism according to the moving position.

10. A control method for a high-voltage switch cabinet, characterized in that: Applicable to the high voltage switchgear described in any one of claims 1 to 9; The method comprises: Starting the movement of the circuit breaker trolley and connecting the circuit breaker trolley to the busbar mechanism so that the busbar mechanism is connected to the cable; Starting a temperature mechanism to detect the device temperature at the connection between the bus mechanism and the circuit breaker trolley, and if the temperature mechanism determines that the device temperature exceeds a preset temperature threshold, cooling the bus mechanism and the circuit breaker trolley and / or generating temperature alarm information; The humidity mechanism is started to detect the humidity of the equipment at the connection point. If the humidity mechanism determines that the humidity of the equipment exceeds a preset humidity threshold, the bus mechanism and the circuit breaker trolley are dehumidified and / or humidity alarm information is generated; The position control mechanism is started to detect the moving position of the circuit breaker trolley when the circuit breaker trolley is connected to the bus mechanism. If the position control mechanism determines that the distance between the circuit breaker trolley and the bus mechanism exceeds a preset position threshold according to the moving position, the circuit breaker trolley is driven to move toward the bus mechanism so that the distance between the circuit breaker trolley and the bus mechanism does not exceed the position threshold; The pressure relief device is started to detect the gas pressure in the cabinet. If the pressure relief device determines that the gas pressure in the cabinet exceeds a preset pressure threshold, the connection between the inside of the cabinet and the outside is established.

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