Intelligent control device for high-voltage switch of catenary

Abstract

A kind of intelligent control device of catenary high-voltage switch, including box, electric operating mechanism, intelligent control device and control panel are arranged in the box, and the output shaft of electric operating mechanism extends outside the box;The intelligent control device includes intelligent controller, network switch, the intelligent controller is electrically connected with electric operating mechanism by contactor, and the intelligent controller is connected with network switch in communication;The control panel includes touch screen, power switch and opening-closing button, the touch screen is connected with network switch in communication, and the power switch, opening-closing button are electrically connected with intelligent controller respectively;Control parameter is set by touch screen and is sent to intelligent controller, opening-closing signal is input to intelligent controller by opening-closing button, and opening-closing action is output by the positive and negative rotation output of the output shaft of electric operating mechanism controlled by intelligent controller.The utility model overcomes the deficiencies of prior art.

Description

Technical Field

[0001] This utility model belongs to the field of high voltage switch control technology, and in particular relates to an intelligent control device for overhead contact line high voltage switches. Background Technology

[0002] In electrified railway traction power supply systems, disconnecting switches, disconnecting switches with interlocking grounding, or grounding switches are common high-voltage switchgear for overhead contact lines. Because these types of switchgear have basically the same structural characteristics and operating requirements, they all use the same electric operating mechanism as the main execution unit for their opening and closing actions.

[0003] In practical applications, the safety and reliability of electric operating mechanisms are of paramount importance. To prevent abnormal phenomena such as failure to operate, malfunction, and false display in high-voltage switchgear, two control methods are typically employed. One is the fiber optic indirect control method, which suffers from drawbacks such as a large number of electrical components, complex wiring, high failure rate, and difficulty in locating fault points. The other is the direct cable remote control method, which only retains components such as the motor, auxiliary switches, and limit switches inside the enclosure, directly controlling the drive motor through a laid DC cable. It lacks local electric operation capabilities and has certain limitations in its use. Summary of the Invention

[0004] This invention provides an intelligent control device for overhead contact line high-voltage switches to overcome the shortcomings of existing technologies.

[0005] The technical solution adopted in this utility model is as follows: an intelligent control device for overhead contact line high-voltage switches, comprising a housing, an electric operating mechanism, an intelligent control device, and a control panel, wherein the output shaft of the electric operating mechanism extends out of the housing; the intelligent control device includes an intelligent controller and a network switch, wherein the intelligent controller is electrically connected to the electric operating mechanism via a contactor and is communicatively connected to the network switch; the control panel includes a touch screen, a power switch, and a closing / opening button, wherein the touch screen is communicatively connected to the network switch, and the power switch and the closing / opening button are respectively electrically connected to the intelligent controller; control parameters are set via the touch screen and transmitted to the intelligent controller, and closing / opening signals are input to the intelligent controller via the closing / opening button; the intelligent controller controls the output shaft of the electric operating mechanism to output closing / opening actions in both forward and reverse directions.

[0006] It also includes an operation mode switching mechanism set at the input end of the electric operating mechanism. The operation mode switching mechanism includes a changeover switch and a manual operation port. The changeover switch is electrically connected to the intelligent controller and is used to switch between manual, local electric operation and remote electric operation. When switching to manual operation, the electrical operation circuit is locked, and when switching to electric operation, the manual operation port is locked.

[0007] The electric operating mechanism is equipped with a gate opening and closing limit switch, which is used to adjust and determine the rotation angle of the output shaft.

[0008] The enclosure has a first door on the side facing the touchscreen, and the first door has an observation window that faces the touchscreen.

[0009] A manual crank is fitted inside the first door.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. This utility model reduces the number of electrical components, simplifies wiring, lowers the failure rate, and avoids abnormal phenomena such as failure to operate, malfunction, and false display, while ensuring the safe and reliable operation of the electric operating mechanism, thereby improving the intelligence and automation level of the electric operating mechanism.

[0012] 2. This utility model has multiple digital input / output and analog input / output interfaces, which facilitates connection to external expansion devices and integrates functions such as monitoring, fault alarm, event recording, automatic temperature and humidity control, and information display. It also facilitates remote communication and monitoring functions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the electric operating mechanism of this utility model;

[0016] Figure 4 This is a schematic diagram of the intelligent control device of this utility model;

[0017] Figure 5 This is a schematic diagram of the control panel structure of this utility model;

[0018] Figure 6 This is a block diagram of the electrical control system of this utility model. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in detail below with reference to specific embodiments.

[0020] A smart control device for overhead contact line high-voltage switches includes a housing 1. The housing 1 houses an electric operating mechanism 2, a smart control device 3, and a control panel 4. The output shaft 2-1 of the electric operating mechanism 2 extends outside the housing 1. The smart control device 3 includes a smart controller 3-1 and a network switch 3-2. The smart controller 3-1 is electrically connected to the electric operating mechanism 2 via a contactor 3-3 and is communicatively connected to the network switch 3-2. The control panel 4 includes a touchscreen 4-1, a power switch 4-2, and a closing / opening button 4-3. The touchscreen 4-1 is communicatively connected to the network switch 3-2, and the power switch 4-2 and the closing / opening button 4-3 are electrically connected to the smart controller 3-1. Control parameters are set via the touchscreen 4-1 and transmitted to the smart controller 3-1. Closing / opening signals are input to the smart controller 3-1 via the closing / opening button 4-3. The smart controller 3-1 controls the output shaft 2-1 of the electric operating mechanism 2 to rotate forward and reverse, outputting closing / opening actions.

[0021] To enable manual, local electric operation, and remote electric operation, an operation mode switching mechanism 5 is included, located at the input end of the electric operating mechanism 2. This mechanism includes a changeover switch 5-1 and a manual operation port 5-2. The changeover switch 5-1 is electrically connected to the intelligent controller 3-1 and is used to switch between manual, local, and remote electric operation. When switched to manual operation, the electrical operation circuit is locked, and when switched to electric operation, the manual operation port 5-2 is locked. Specifically, locking the manual operation port involves a baffle fixedly connected to the changeover switch 5-1. When the changeover switch 5-1 is switched to electric operation, the baffle deflects with the changeover switch 5-1, closing the manual operation port 5-2. The changeover switch 5-1 is a Siemens APT universal changeover switch. Manual operation involves inserting a manual crank 6 through the manual operation port 5-2, manually driving the electric operating mechanism 2 to rotate its output shaft 2-1 in both forward and reverse directions to perform opening and closing actions.

[0022] To achieve remote electric operation, the remote opening and closing switch can be connected to the network switch 3-2 via fiber optic cable. The opening and closing signals are then transmitted to the intelligent controller 3-1 via the network switch 3-2. By switching the transfer switch 5-1 to the remote electric operation position, remote electric operation can be achieved. Simultaneously, the intelligent controller 3-1 can also transmit operational control information (video feed, anti-misoperation interlocking information, fault alarm information, and other data) to the touchscreen and backend via the network switch 3-2.

[0023] In order to adapt to the operating technical requirements of different types of overhead contact line high voltage switches, the electric operating mechanism 2 is equipped with a closing limit switch 2-2, which is used to adjust and determine the rotation angle of the output shaft 2-1.

[0024] During assembly, the electric operating mechanism 2 and the intelligent control device 3 are fixed to the rear panel of the housing 1, with the electric operating mechanism 2 positioned above the intelligent control device 3. The output shaft 2-1 extends from the left side panel of the housing 1, and the control panel 4 is fixed in front of the electric operating mechanism 2 and the intelligent control device 3. The housing 1 has a first door 1-1 on the front facing the touchscreen 4-1, and a second door 1-2 on the right side of the housing 1, facilitating assembly and maintenance. A terminal block 7 is installed near the second door 1-2, serving as an interface for internal electrical and communication connections, and externally as an interface for connecting to external power supplies and external expansion devices. For easy observation of the touchscreen 4-1, an observation window 1-3 is provided on the first door 1-1, facing the touchscreen 4-1. A manual crank handle 6 is fitted inside the first door 1-1 for easy manual operation.

[0025] The electric operating mechanism 2 is the same as existing technology, consisting of a worm gear reducer 2-3 and a DC motor 2-4; the intelligent controller 3-1 adopts a PLC industrial controller. The intelligent control device 3 also includes a switching power supply 8 and a surge protector 9; the switching power supply 8 is electrically connected to the power switch 4-2, and supplies power to the network switch 3-2 and the touch screen 4-1 through the switching power supply 8; the power switch 4-2 is connected to an external power source through the surge protector 9 and terminal block 7 to protect the electrical components inside the box from damage by transient overvoltages.

[0026] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Therefore, all equivalent variations made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A smart control device for overhead contact line high-voltage switches, comprising a housing (1), characterized in that: The housing (1) is equipped with an electric operating mechanism (2), an intelligent control device (3), and a control panel (4), with the output shaft (2-1) of the electric operating mechanism (2) extending out of the housing (1). The intelligent control device (3) includes an intelligent controller (3-1) and a network switch (3-2). The intelligent controller (3-1) is electrically connected to the electric operating mechanism (2) via a contactor (3-3), and the intelligent controller (3-1) is communicatively connected to the network switch (3-2). The control panel (4) includes a touch screen (4-1) and a power supply. The power switch (4-2) and the circuit breaker button (4-3) are connected to the touch screen (4-1) and the network switch (3-2). The power switch (4-2) and the circuit breaker button (4-3) are electrically connected to the intelligent controller (3-1). The control parameters are set through the touch screen (4-1) and transmitted to the intelligent controller (3-1). The circuit breaker button (4-3) inputs the circuit breaker signal to the intelligent controller (3-1). The intelligent controller (3-1) controls the output shaft (2-1) of the electric operating mechanism (2) to output the circuit breaker action in both forward and reverse directions.

2. The intelligent control device for overhead contact line high-voltage switches according to claim 1, characterized in that: It also includes an operation mode switching mechanism (5) set at the input end of the electric operation mechanism (2). The operation mode switching mechanism (5) includes a changeover switch (5-1) and a manual operation port (5-2). The changeover switch (5-1) is electrically connected to the intelligent controller (3-1) and is used to switch between manual, local electric operation and remote electric operation. When switching to manual operation, the electrical operation circuit is locked, and when switching to electric operation, the manual operation port (5-2) is locked.

3. The intelligent control device for overhead contact line high-voltage switches according to claim 1, characterized in that: The electric operating mechanism (2) is equipped with a gate opening and closing limit switch (2-2), which is used to adjust and determine the rotation angle of the output shaft (2-1).

4. The intelligent control device for overhead contact line high-voltage switches according to claim 1, characterized in that: The box (1) has a first door (1-1) on the side opposite the touch screen (4-1). The first door (1-1) has an observation window (1-3) and the observation window (1-3) faces the touch screen (4-1).

5. The intelligent control device for overhead contact line high-voltage switches according to claim 4, characterized in that: A manual crank (6) is fitted inside the first box door (1-1).

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