Position detection device for circuit breaker of high-voltage switch cabinet

Abstract

The utility model relates to the technical field of circuit breakers in an electric power system, and discloses a high-voltage switch cabinet circuit breaker position detection device, which comprises a bottom plate, a circuit breaker body is arranged at the upper end of the bottom plate, a circuit breaker main loop is arranged at the upper end of the circuit breaker body, and an insulating pull rod is arranged at the lower end of the circuit breaker body. According to the high-voltage switch cabinet circuit breaker position detection device and method, the distance sensor is adopted to monitor the position of the circuit breaker in real time, the position of the circuit breaker can be accurately judged, normal operation of the circuit breaker is guaranteed, meanwhile, the controller can control the on-off state of the circuit breaker according to the judgment result, and the reliability of the circuit breaker position detection device is improved. Automatic operation of the circuit breaker is achieved, the position of the circuit breaker can be visually indicated through the circuit breaker position indicator, operation and maintenance of operators are facilitated, and real-time data can be transmitted to a background or a cloud end through a communication port of the distance sensor device according to pull-out distance data and opening and closing position information of the circuit breaker.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers in power systems, in particular to a position detection device for a circuit breaker of a high-voltage switch cabinet. Background Art

[0002] With the continuous development of power systems, circuit breakers, as an important power protection device, play a vital role in power systems. In practical applications, the location of circuit breakers is of great significance to the normal operation of power systems and the protection of power equipment. Therefore, accurately detecting and monitoring the location of circuit breakers is one of the basic requirements for the operation of power systems.

[0003] At present, common circuit breaker position detection methods mainly include mechanical, electrical and magnetic types. Among them, the mechanical detection method mainly detects the position of the circuit breaker through a mechanical transmission device, but this method has problems such as easy damage to the transmission device and low action accuracy; the electrical detection method mainly determines the position of the circuit breaker through electrical signals, but this method has problems such as limited transmission distance of electrical signals and susceptibility to interference; the magnetic detection method mainly detects the position of the circuit breaker through magnetic field induction, but this method has problems such as magnetic field interference and unstable magnetic field strength. Especially for high-voltage systems, many circuit breakers work outdoors for a long time. Because of the large temperature difference throughout the year, there are many times when the circuit breaker changes position and the system does not receive the position signal of the circuit breaker auxiliary contact.

[0004] Therefore, it is necessary to provide a method and device that can accurately detect the position of a circuit breaker, operate reliably, and have high safety, so as to meet the needs of the power system for circuit breaker position monitoring. Utility Model Content

[0005] The purpose of the utility model is to provide a high-voltage switch cabinet circuit breaker position detection device and method to solve the problems existing in the circuit breaker position detection in the prior art and improve the safety and reliability of circuit breaker operation. At the same time, the circuit breaker uses a distance sensor as a circuit breaker position detection method, which is also a digital power system, improves the judgment of the working state of the short circuit breaker, and provides a basis for the service life of the circuit breaker. The distance data and the opening and closing position information of the circuit breaker can be transmitted to the background or cloud through the communication port of the distance sensor device in real time.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-voltage switch cabinet circuit breaker position detection device, comprising a base plate, a circuit breaker body is provided at the upper end of the base plate, a circuit breaker main circuit is provided at the upper end of the circuit breaker body, an insulating pull rod is provided at the lower end of the circuit breaker body, a crank arm is provided at the left end of the insulating pull rod, a distance sensor is provided at the lower end of the insulating pull rod, and an operating device is connected to the right end of the crank arm via a connecting rod.

[0007] Preferably, the distance sensor is electrically connected to a controller, and the controller is electrically connected to a display.

[0008] Preferably, the controller is electrically connected to a fault detection and alarm module, and a connection line is provided between an output end of the fault detection and alarm module and an input end of the display.

[0009] Preferably, the connecting line adopts a flexible cable or an insulated cable.

[0010] Preferably, the distance sensor is located directly below the insulating pull rod, and the main circuit of the circuit breaker includes a moving contact in the arc extinguishing chamber.

[0011] Preferably, the controller is a programmable logic controller, and the distance sensor is a high-precision, high-stability sensor.

[0012] A high-voltage switch cabinet circuit breaker position detection device and method, characterized in that it comprises the following steps:

[0013] Step 1: Install a distance sensor on the circuit breaker to detect the position of the circuit breaker and transmit the detected position data to the controller;

[0014] Step 2: The controller receives the position data transmitted by the distance sensor and processes it to determine the position of the circuit breaker;

[0015] Step 3: According to the judgment result, the controller controls the switch state of the circuit breaker to achieve normal operation of the circuit breaker.

[0016] Preferably, the distance sensor detects the position of the circuit breaker and converts the position data into an electrical signal which is transmitted to the controller via a connecting line.

[0017] Preferably, the controller transmits data information to a fault detection and alarm module for detecting a fault state of the system and sending an alarm signal when a fault is detected.

[0018] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0019] The utility model realizes real-time monitoring of the position of the circuit breaker by adopting a distance sensor, and can accurately judge the position of the circuit breaker, thereby ensuring the normal operation of the circuit breaker. At the same time, the controller can control the switch state of the circuit breaker according to the judgment result, so as to realize the automatic operation of the circuit breaker. The circuit breaker position indicator can intuitively indicate the position of the circuit breaker, which is convenient for operators to operate and maintain. The distance data and the opening and closing position information of the circuit breaker can be transmitted to the background or the cloud in real time through the communication port of the distance sensor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the distance sensor and circuit breaker position detection device of the utility model.

[0022] Among them: 1. Base plate; 2. Circuit breaker body; 3. Circuit breaker main circuit; 4. Insulating pull rod; 5. Crank arm; 6. Distance sensor; 7. Operating device. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the specific implementation of the utility model. Obviously, the specific implementation described is only a part of the utility model, not all of it. Based on the specific implementation of the utility model, all other specific implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The following is a specific implementation of a high-voltage switch cabinet circuit breaker position detection device and method.

[0025] See also Figure 1-2 A high-voltage switch cabinet circuit breaker position detection device comprises a base plate 1, a circuit breaker body 2 is provided at the upper end of the base plate 1, a circuit breaker main circuit 3 is provided at the upper end of the circuit breaker body 2, an insulating rod 4 is provided at the lower end of the circuit breaker body 2, a crank arm 5 is provided at the left end of the insulating rod 4, a distance sensor 6 is provided at the lower end of the insulating rod 4, and an operating device 7 is connected to the right end of the crank arm 5 through a connecting rod.

[0026] Through the above technical solution, the distance sensor 6 is arranged just below the insulating rod 4. When the circuit breaker is opened, the distance between the insulating rod 4 and the distance sensor is about 6mm. When the circuit breaker is closed, the insulating rod 4 pushes the transmission arm 5 upward under the drive of the operating mechanism 7, and pushes the main circuit 3 of the circuit breaker (the moving contact in the arc extinguishing chamber), and the primary main circuit is connected to the power supply. The upward movement distance of the insulating rod is 12mm, that is, the distance between the moving contact and the static contact in the arc extinguishing chamber is 12mm. Because of the assistance of the circuit breaker, the introduction of the distance sensor also provides a systematic data analysis basis for the real state of the circuit breaker opening and closing. The operating staff on duty can intuitively see the working state of the circuit breaker, the contact state of the moving and static contacts, whether there is poor contact or the synchronization of the three phases, and other data information on the background through the remotely transmitted data. At the same time, the staff on duty can also compare and analyze the previous data at any time to judge the working state of the circuit breaker, which is convenient for the operator to operate and maintain.

[0027] Specifically, the distance sensor 6 is electrically connected to the controller, and the controller is electrically connected to the display.

[0028] According to the above technical solution, a distance sensor 6 is installed on the circuit breaker to detect the position of the circuit breaker and transmit the detected position data to the controller.

[0029] Specifically, the controller is electrically connected to a fault detection and alarm module, and a connection line is provided between an output end of the fault detection and alarm module and an input end of the display.

[0030] Through the above technical solution, the fault detection and alarm module is electrically connected to the controller to detect the fault state of the system and send out an alarm signal when a fault is detected.

[0031] Specifically, the connection line adopts a flexible cable or an insulated cable.

[0032] Through the above technical solution, the connecting line is a flexible cable or an insulated wire, which can adapt to the layout and wiring requirements inside the high-voltage switch cabinet.

[0033] Specifically, the distance sensor 6 is located directly below the insulating pull rod 4, and the circuit breaker main circuit 3 includes a moving contact in the arc extinguishing chamber.

[0034] Specifically, the controller is a programmable logic controller, and the distance sensor 6 is a high-precision and high-stability sensor.

[0035] Through the above technical solution, the controller is a programmable logic controller with data processing and control output functions, which can be updated by software or adjusted by configuration to adapt to different application requirements.

[0036] A high-voltage switch cabinet circuit breaker position detection device and method thereof, comprising the following steps:

[0037] Step 1: Install a distance sensor 6 on the circuit breaker to detect the position of the circuit breaker and transmit the detected position data to the controller;

[0038] Step 2: The controller receives the position data transmitted by the distance sensor 6, processes it, and determines the position of the circuit breaker;

[0039] Step 3: According to the judgment result, the controller controls the switch state of the circuit breaker to achieve normal operation of the circuit breaker.

[0040] Through the above technical solution, by using the distance sensor 6 to realize real-time monitoring of the circuit breaker position, the position of the circuit breaker can be accurately judged, thereby ensuring the normal operation of the circuit breaker. At the same time, the controller can control the switch state of the circuit breaker according to the judgment result to realize the automatic operation of the circuit breaker. The circuit breaker position indicator can intuitively indicate the position of the circuit breaker, which is convenient for operators to operate and maintain. The distance data of the circuit breaker and the opening and closing position information can be transmitted to the background or cloud through the communication port of the distance sensor 6 device in real time.

[0041] Specifically, the distance sensor 6 detects the position of the circuit breaker and converts the position data into an electrical signal and transmits it to the controller through a connecting line.

[0042] Specifically, the controller transmits data information to the fault detection and alarm module for detecting the fault state of the system and sending an alarm signal when a fault is detected.

[0043] The distance data and position information of each phase of the circuit breaker in the utility model are as follows: .

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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.

[0045] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-voltage switch cabinet circuit breaker position detection device, comprising a base plate (1), characterized in that: A circuit breaker body (2) is provided at the upper end of the base plate (1), a circuit breaker main circuit (3) is provided at the upper end of the circuit breaker body (2), an insulating pull rod (4) is provided at the lower end of the circuit breaker body (2), a crank arm (5) is provided at the left end of the insulating pull rod (4), a distance sensor (6) is provided at the lower end of the insulating pull rod (4), and the right end of the crank arm (5) is connected to an operating device (7) via a connecting rod.

2. A high-voltage switch cabinet circuit breaker position detection device according to claim 1, characterized in that: The distance sensor (6) is electrically connected to a controller, and the controller is electrically connected to a display.

3. A high-voltage switch cabinet circuit breaker position detection device according to claim 2, characterized in that: The controller is electrically connected to a fault detection and alarm module, and a connection line is provided between an output end of the fault detection and alarm module and an input end of the display.

4. A high-voltage switch cabinet circuit breaker position detection device according to claim 3, characterized in that: The connecting line adopts a flexible cable or an insulated cable.

5. A high-voltage switch cabinet circuit breaker position detection device according to claim 1, characterized in that: The distance sensor (6) is located directly below the insulating pull rod (4), and the circuit breaker main circuit (3) includes a moving contact in the arc extinguishing chamber.

6. A high-voltage switch cabinet circuit breaker position detection device according to claim 2, characterized in that: The controller is a programmable logic controller, and the distance sensor (6) is a high-precision, high-stability sensor.

7. A high-voltage switch cabinet circuit breaker position detection device according to claim 6, characterized in that: The distance sensor (6) detects the position of the circuit breaker and converts the position data into an electrical signal which is transmitted to the controller via a connecting line.

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