Lifting combined high-voltage switch cabinet

Abstract

The utility model relates to a lifting combined high-voltage switch cabinet which is characterized in that the high-voltage switch cabinet comprises a lifting cabinet and a wire outlet cabinet, a metering chamber and a high-voltage chamber are arranged in the wire outlet cabinet, a wire inlet cable, a voltage transformer, a wire inlet copper bar and an insulator are installed in the lifting cabinet, the wire inlet cable is connected into the wire inlet copper bar, and the insulator is installed on the wire inlet copper bar. The support is fixedly supported on the partition plate; a current transformer, a sensor, a vacuum circuit breaker and an outgoing cable are arranged in the high-voltage chamber; the current transformer is connected to the microcomputer protection device, and the vacuum circuit breaker is connected to the microcomputer protection device and the terminal; an incoming cable and an incoming copper bar of the lifting cabinet are connected with a current transformer, a vacuum circuit breaker and an outgoing cable of the outgoing cabinet to form a main loop of the lifting combined high-voltage switch cabinet; and the current transformer, the vacuum circuit breaker, the microcomputer protection device and the terminal are connected to form a monitoring loop. The cabinet simplifies high-voltage power distribution equipment and lines by lifting wire inlet and wire outlet combination, automatically controls the protection function of the high-voltage switch cabinet, and is safe in operation.

Description

Technical Field

[0001] The utility model belongs to the field of high-voltage side power distribution, in particular to a lifting combined high-voltage switch cabinet. Background Art

[0002] The switch cabinet for high-voltage side electrical equipment can cover dozens of dedicated users. It is a three-phase AC 50Hz indoor complete power distribution device, which is mainly used to receive and distribute 3-12 kV network power and implement control, protection and monitoring of the circuit. A large number of high-voltage switch cabinets require incoming line cabinets and outgoing line cabinets to meet the user's demand for control circuit power. In the prior art, the switch cabinet is configured with high-voltage side electrical equipment with an input voltage of 10kV. High-voltage incoming line cabinets and high-voltage outgoing line cabinets are generally used in combination, and they are all equipped with internal components and line components of incoming line cabinets and outgoing line cabinets. Due to the extensive and large-scale use of high-voltage switch cabinets by dedicated users, the cost of each set of incoming line cabinets or outgoing line cabinets is relatively high. Therefore, simplifying multiple combinations of high-voltage cabinets can also realize the voltage and current monitoring and overcurrent and voltage protection functions of the main circuit of the high-voltage switch cabinet, which is an urgent problem to be solved. Summary of the invention

[0003] The problem to be solved by the utility model is that the existing high-voltage switchgear equipment of special transformer users is used in combination with multiple cabinets to realize the voltage and current monitoring and overcurrent and voltage protection functions, which leads to high costs and complex lines. A lifting combination high-voltage switchgear is provided, which simplifies the high-voltage power distribution equipment and lines by lifting the combination of incoming and outgoing lines, realizes the monitoring of the main circuit current, the automatic control of the high-voltage switchgear protection function, and safe operation.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a lifting combined high-voltage switch cabinet, characterized in that: the high-voltage switch cabinet comprises a lifting cabinet and an outlet cabinet, a partition is installed between the lifting cabinet and the outlet cabinet combination, a metering room and a high-voltage room are arranged in the outlet cabinet, and a partition is installed between the metering room and the high-voltage room;

[0005] The inlet cable, voltage transformer, inlet copper bar and insulator are installed in the lifting cabinet. The inlet cable is connected to the inlet copper bar. The insulator is installed on the inlet copper bar and supported and fixed on the partition.

[0006] The high voltage room is equipped with a current transformer, a sensor, a vacuum circuit breaker, and an outgoing cable; the upper end of the incoming copper bar is connected to the upper end of the current transformer, the lower end of the current transformer is connected to the upper end of the vacuum circuit breaker, and the lower end of the vacuum circuit breaker is connected to the outgoing cable;

[0007] Microcomputer protection devices and terminals are installed in the metering room;

[0008] The current transformer is connected to a microcomputer protection device, and the vacuum circuit breaker is connected to a microcomputer protection device and a terminal;

[0009] The incoming cable and the incoming copper busbar of the lifting cabinet are connected with the current transformer, the vacuum circuit breaker and the outgoing cable of the outgoing cabinet to form the main circuit of the lifting combined high-voltage switch cabinet;

[0010] The current transformer, vacuum circuit breaker, microcomputer protection device and terminal connection constitute a monitoring circuit.

[0011] Preferably, a charge indicator is installed in the high-voltage chamber, and the charge indicator is connected to a sensor.

[0012] Preferably, a door is provided at one side of the metering chamber, and opening and closing buttons and opening and closing lights are installed on the door, and are respectively connected to vacuum circuit breakers.

[0013] Preferably, the microcomputer protection device includes a single chip microcomputer, a CPU, and a relay.

[0014] The advantages and positive effects of the utility model are:

[0015] 1. Since the utility model adopts a lifting combined high-voltage switchgear that combines an incoming cabinet and an outgoing cabinet into a lifting combined high-voltage switchgear, it can not only meet the functions of main circuit voltage and current monitoring and overcurrent and voltage protection when the incoming cabinet and the outgoing cabinet are used together, but also simplify the electrical components of the incoming cabinet, realize the automatic protection function of the outgoing cabinet by improving the incoming power supply, save a lot of costs, and also complete the monitoring circuit composed of current transformer, microcomputer protection device, vacuum circuit breaker and terminal connection to prevent user-side faults from affecting the safe operation of the power grid.

[0016] 2. Since the utility model adopts a lifting combined high-voltage switch cabinet to install the incoming cable in the lifting cabinet to access the incoming copper busbar, and installs insulators on the incoming copper busbar, the installation of the incoming cabinet is simplified. The voltage transformer, sensor, vacuum circuit breaker and a complete set of voltage and current monitoring and overcurrent and voltage protection devices are installed in the high-voltage room. Only the current transformer needs to be installed in the lifting cabinet to complete the current monitoring function of the main circuit, which significantly reduces the equipment cost, simplifies the line, and reduces the labor cost.

[0017] 3. Since the utility model adopts a lifting combined high-voltage switch cabinet to connect the current transformer of the lifting cabinet to the microcomputer protection device of the outgoing cabinet, and the microcomputer protection device is connected to the vacuum circuit breaker at the same time, the microcomputer protection device samples the current of the main circuit, so that the vacuum circuit breaker receives the instruction of the microcomputer protection device and automatically performs the opening and closing operations, forming an automatic monitoring current protection function, the incoming cabinet is simplified to a lifting cabinet, which also has the monitoring function of the incoming cable and the current transformer, reducing electrical components and saving costs.

[0018] 4. Since the utility model adopts a lifting combined high-voltage switch cabinet that adopts a lifting outlet two-in-one combined cabinet, and a microcomputer protection device is installed in the metering room of the outlet cabinet, and a switch-on and switch-off button and a switch-on and switch-off lamp are installed on the cabinet door, the microcomputer protection device is respectively connected to the vacuum circuit breaker and the switch-on and switch-off buttons and the switch-on and switch-off lamp, and the current transformer can monitor the main circuit current and feed it back to the microcomputer protection device. Once the overcurrent protection setting value set by the microcomputer protection device is exceeded, the microcomputer protection device issues a tripping command to form an automatic control vacuum circuit breaker tripping protection function, and the switch-on and switch-off lamp display light is on. Manually press the switch-on and switch-off buttons to form a manual protection main circuit, thereby improving work performance and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic side view of the structural circuit of a lifting combined high-voltage switch cabinet.

[0020] 1-outgoing line cabinet, 2-outgoing line cable, 3-high voltage room, 4-vacuum circuit breaker, 5-metering room, 6-power display, 7-opening and closing buttons, 8-opening and closing lights, 9-terminals, 10-partitions, 11-microcomputer protection devices, 12-lifting cabinet, 13-incoming line cable, 14-sensor, 15-current transformer, 16-voltage transformer, 17-insulator, 18-incoming copper busbar. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to specific embodiments.

[0022] like Figure 1 As shown, a lifting combination high-voltage switch cabinet is formed by combining two cabinets, an incoming cabinet and an outgoing cabinet 1, into a lifting combination high-voltage switch cabinet. The cabinet is divided into a lifting cabinet 12 and an outgoing cabinet 1, and a partition 10 is installed between the two cabinets to separate them. The lifting cabinet 12 is installed with an incoming cable 13, a voltage transformer 16, an incoming copper bar 18, and an insulator 17. The incoming cable 13 is connected to the incoming copper bar 18, and an insulator 17 is installed on the incoming copper bar 18 to support and fix it on the partition 10; the outgoing cabinet 1 is divided into a metering chamber 5 and a high-voltage chamber 3, and a partition 10 is installed between the metering chamber 5 and the high-voltage chamber 3. The metering chamber 5 is arranged at the upper end of the front of the cabinet, and the cabinet door at the upper end of the front of the cabinet is provided with an observation window. The lower end of the metering chamber 5 is the high-voltage chamber 3, and the outer shell of the cabinet and the partition 10 are made of aluminum-zinc coated steel plate.

[0023] The voltage transformer 16, sensor 14, vacuum circuit breaker 4, and outgoing cable 2 are installed in the high-voltage room 3. The upper end of the incoming copper bar 18 is connected to the upper end of the current transformer 15, and the lower end of the current transformer 15 is connected to the upper end of the vacuum circuit breaker 4, and the lower end of the vacuum circuit breaker 4 is connected to the outgoing cable 2; the live display 6 is installed in the high-voltage room 3, and the live display 6 is connected to the sensor 14. The microcomputer protection device 11 and terminal 9 are installed in the metering room 5, and the vacuum circuit breaker 4 is connected to the microcomputer protection device 11 and terminal 9; the current transformer 15 is connected to the microcomputer protection device 11, and the microcomputer protection device 11 monitors the current of the 10KV main circuit in real time through the current of the current transformer 15; the current transformer 15, the microcomputer protection device 11, the vacuum circuit breaker 4, and the terminal 9 are connected to form a monitoring circuit. A door is provided on one side of the metering room 5, on which a switch-on / off button 7 and a switch-on / off lamp 7 are installed. The switch-on / off button 7 and the switch-on / off lamp 7 are respectively connected to the vacuum circuit breaker 4. The vacuum circuit breaker 4 is manually opened and closed through the switch-on / off button 7 on the metering room 5 door.

[0024] When the combined high-voltage switch cabinet is working, a 10kV incoming cable 13 is input from the lifting cabinet 12, enters the copper bar at the incoming end of the lifting cabinet 12, enters the upper end of the current transformer 15 from the upper end of the copper bar at the incoming end, enters the upper end of the vacuum circuit breaker 4 from the lower end of the current transformer 15, and then enters the 10kV outgoing cable 2 at the user's outgoing end from the lower end of the vacuum circuit breaker 4, thus forming the main circuit of the combined high-voltage switch cabinet. The microcomputer protection device 11 monitors the 10kV main circuit current and sets the microcomputer current protection constant. Once the 10kV main circuit current is greater than the set current, the microcomputer protection device 11 controls the vacuum circuit breaker 4 to disconnect to protect the 10kV incoming front-end power supply line and the 10kV outgoing end user equipment, or manually disconnects and closes the vacuum circuit breaker 4 through the opening and closing buttons 7 on the metering room 5 door; the live display 6 determines whether the 10KV incoming line is live by collecting the output voltage of the 10KV main circuit sensor 14.

[0025] The above embodiments of the utility model are described in detail, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the utility model should still fall within the scope of this patent.

Claims

1. A lifting combined high-voltage switchgear, characterized in that: The high-voltage switch cabinet comprises a lifting cabinet and an outlet cabinet, a partition is installed between the lifting cabinet and the outlet cabinet combination, a metering room and a high-voltage room are arranged in the outlet cabinet, and a partition is installed between the metering room and the high-voltage room; The inlet cable, voltage transformer, inlet copper bar and insulator are installed in the lifting cabinet. The inlet cable is connected to the inlet copper bar. The insulator is installed on the inlet copper bar and supported and fixed on the partition. The high voltage room is equipped with a current transformer, a sensor, a vacuum circuit breaker, and an outgoing cable; the upper end of the incoming copper bar is connected to the upper end of the current transformer, the lower end of the current transformer is connected to the upper end of the vacuum circuit breaker, and the lower end of the vacuum circuit breaker is connected to the outgoing cable; Microcomputer protection devices and terminals are installed in the metering room; The current transformer is connected to a microcomputer protection device, and the vacuum circuit breaker is connected to a microcomputer protection device and a terminal; The incoming cable and the incoming copper busbar of the lifting cabinet are connected with the current transformer, the vacuum circuit breaker and the outgoing cable of the outgoing cabinet to form the main circuit of the lifting combined high-voltage switch cabinet; The current transformer, vacuum circuit breaker, microcomputer protection device and terminal connection constitute a monitoring circuit.

2. The lifting combined high-voltage switch cabinet according to claim 1 is characterized in that: A live indicator is installed in the high voltage chamber, and the live indicator is connected to a sensor.

3. The lifting combined high-voltage switch cabinet according to claim 1 is characterized in that: A door is arranged at one side of the metering room, and an opening and closing button and an opening and closing lamp are installed on the door, and are respectively connected to vacuum circuit breakers.

4. The lifting combined high-voltage switch cabinet according to claim 1 is characterized in that: The microcomputer protection device comprises a single chip microcomputer, a CPU and a relay.

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