Novel teaching aid with high-voltage switch cabinet function

Abstract

The utility model discloses a novel teaching aid with a high-voltage switch cabinet function, and relates to the technical field of simulation teaching aids. Comprising a frame; the frame is connected with a circuit breaker, a power supply air switch, a protection device, an intelligent control device, a wiring terminal, a protection pressing plate and a control panel; the circuit breaker, the power supply air switch, the protection device, the intelligent control device, the wiring terminal and the protection pressing plate are all electrically connected with the control panel, all the devices are closely integrated together, the size is greatly reduced, the same electrical principle is fused, various action principles of a high-voltage switch cabinet can be simulated, and the simulation performance of the high-voltage switch cabinet is improved. Various protection function display and actual simulation verification of the protection device are mastered, and the device can be used for test courses, principle courses, practical courses, competition activities and the like, and is rich in application scenes; operation and maintenance personnel can carry out practical operation exercises in product functions, and practice type talents who are skilled can be cultivated.

Description

Technical Field

[0001] The utility model relates to the technical field of simulation teaching aids, in particular to a new teaching aid with the function of a high-voltage switch cabinet. Background Art

[0002] Switchgear, also known as high-voltage switchgear or low-voltage switchgear, is a collection of electrical equipment used to distribute, control and protect electrical equipment in power systems.

[0003] The high-voltage switchgear in the substation is usually in operation, and personnel cannot operate it frequently, so they cannot shut it down for practice at will. In addition, the secondary circuit-related components are complex, and multiple continuous practice operations during a short shutdown may damage the equipment. Most of the learning about the switchgear is theoretical, resulting in few skill practices for operation and maintenance personnel and untimely verification of theoretical learning. At the same time, due to the high cost of off-site practical training and low efficiency of skill improvement, learning can only be done by "staring blankly and relying on imagination." Utility Model Content

[0004] In order to solve the problems of the prior art, the utility model provides a new teaching aid with the function of a high-voltage switch cabinet, comprising: a frame;

[0005] The frame is connected with a circuit breaker, a power circuit breaker, a protection device, an intelligent control device, a wiring terminal, a protection pressure plate and a control panel;

[0006] The circuit breaker, the power circuit breaker, the protection device, the intelligent control device, the wiring terminal, and the protection pressure plate are all electrically connected to the control panel.

[0007] Furthermore, it also includes: an indicator light connected to the frame and electrically connected to the control panel.

[0008] Furthermore, the framework includes:

[0009] Mounting plate;

[0010] Two U-shaped support frames, both ends of which are connected to the bottom of the mounting plate;

[0011] A connecting plate connected between the bottoms of the two U-shaped support frames;

[0012] The power circuit breaker, the protection device, the intelligent control device, the wiring terminals, the protection pressure plate, the indicator light and the control panel are installed on the mounting plate, and the circuit breaker is connected to the connecting plate.

[0013] Furthermore, a handle is connected to the top of the mounting plate.

[0014] Furthermore, it also includes: an outer box, and the frame is installed in the outer box.

[0015] Furthermore, universal wheels are installed at the bottom of the outer box.

[0016] The beneficial effects of the technical solution provided by the utility model are as follows: in the utility model, by connecting the circuit breaker, power circuit breaker, protection device, intelligent control device, wiring terminal, protection pressure plate, indicator light and control panel on the frame, various devices are tightly integrated together, the volume is greatly reduced, and the same electrical principle is integrated. It can simulate the various action principles of high-voltage switchgear, master the functional display and actual simulation verification of various protections of the protection device, and can be used for test classes, principle classes, practical classes, competition activities, etc., with rich application scenarios; it can solve the difficulties of few skill practice times, untimely theoretical learning verification, and low skill improvement efficiency of operation and maintenance personnel, and achieve integrated development of learning and practice. Operation and maintenance personnel can conduct practical exercises within the product functions to cultivate skilled and capable practical talents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a new teaching aid with high-voltage switchgear function provided by the utility model;

[0018] Figure 2 This is a structural schematic diagram of an outer box provided by the utility model;

[0019] Figure 3 It is a control loop principle diagram provided by the utility model;

[0020] Figure 4 It is a signal circuit schematic diagram provided by the utility model;

[0021] Figure 5 The utility model provides a protection verification circuit schematic diagram.

[0022] Figure markings: 1-circuit breaker; 2-power circuit breaker; 3-protection device; 4-intelligent control device; 5-connection terminal; 6-protection pressure plate; 7-indicator light; 8-mounting plate; 9-U-shaped support frame; 10-connecting plate; 11-handle; 12-outer box; 13-universal wheel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] It should be noted that in this embodiment, the directions or positional relationships indicated by "bottom", "top", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] It should also be noted that, in this embodiment, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-Figure 5 A new teaching aid with high-voltage switchgear function includes: a frame, the frame includes: a mounting plate 8, the bottom of the mounting plate 8 is fixedly connected to two U-shaped support frames 9, both ends of the two U-shaped support frames 9 are fixedly connected to the bottom of the mounting plate 8, and a plurality of connecting plates 10 are fixedly connected between the bottoms of the two U-shaped support frames 9.

[0028] A circuit breaker 1, a power circuit breaker 2, a protection device 3, an intelligent control device 4, a wiring terminal 5, a protection pressure plate 6, an indicator light 7 and a control panel are installed on the mounting plate 8. The circuit breaker 1 is fixedly connected to the connecting plate 10, and the circuit breaker 1, the power circuit breaker 2, the protection device 3, the intelligent control device 4, the wiring terminal 5, the protection pressure plate 6, and the indicator light 7 are all electrically connected to the control panel.

[0029] Among them, the circuit breaker 1 selects the circuit breaker commonly used in the current station box transformer; the control panel model can be SIMATIC S7-1200 / 1500 or ABB AF Contact Manager, etc.; the model of the intelligent control device 4 can be DG-A01, XYK9800, D-CK9500, etc., and the intelligent control device 4 can display the energy storage status of the circuit breaker, the opening and closing status of the switch and other information in real time; the protection pressure plate 6 is used as a physical switch to start or exit the protection function to ensure the safe and stable operation of the power system. The protection pressure plate is mainly divided into two categories: functional pressure plate and export pressure plate. The functional pressure plate is mainly used to start or cut off the specific protection function of the protection device, such as differential protection, distance protection, zero sequence protection, re-pressure overcurrent protection, etc.; the export pressure plate is directly related to the execution of the protection action, which determines the protection device to detect a fault. Whether to issue a tripping or signal command when a fault occurs. For example, when a serious fault is detected, the protection device can command the circuit breaker to trip through the output pressure plate, quickly isolate the fault area, and prevent the fault from expanding; the protection device 3 is a core component to ensure the safe and stable operation of the power system. Its main function is to monitor the operating status of the power network and take quick measures when an abnormal situation is detected, such as issuing an alarm signal or automatically performing a tripping operation to isolate the faulty part and protect the electrical equipment from damage. The model of the protection device 3 can be WXJ-831S, etc.; the indicator light 7 can be used for status indication and monitoring, for example, opening and closing status indication, fault and alarm indication, etc.

[0030] Furthermore, the new teaching aid for the functions of the high-voltage switch cabinet also includes: an outer box 12, a universal wheel 13 is installed at the bottom of the outer box 12, and a handle 11 is connected to the top of the mounting plate 8 for easy transportation.

[0031] It should be noted that in the prior art, the high-voltage switchgear equipment is in operation for a long time and cannot be stopped for practice at will. The secondary circuit related components are complex. Multiple continuous practice operations during a short shutdown period may damage the equipment. The new teaching aid with high-voltage switchgear function in the utility model can simulate various action principles of the high-voltage switchgear, master the functional display and actual simulation verification of various protections of the protection device, and the specific work flow can be:

[0032] (1) Simulate the opening and closing function of the switch cabinet: The closing and opening buttons on the control panel are connected to the 1, 2 and 9, 10 contacts of the KK handle (opening and closing switch) respectively to control the opening and closing of the circuit breaker.

[0033] (2) Switch mechanical characteristics test: The opening coil (TQ) and closing coil (HQ) of the circuit breaker are connected to the control panel. Wiring can be done directly on the control panel to conduct the switch mechanical characteristics test.

[0034] (3) DC resistance test: DC resistance test can be performed directly on the circuit breaker body.

[0035] (4) Insulation test: The insulation test can be performed directly on the circuit breaker body, or the secondary circuit can be insulated at the wiring terminals on the control panel.

[0036] (5) CT volt-ampere characteristic test: By connecting an external CT, the measurement data can be transmitted to the protection device, and the CT volt-ampere characteristic and polarity experiments can be carried out.

[0037] (6) Secondary protection transmission test: By externally connecting the voltage terminals Ua, Ub, Uc, current terminals Ia, Ib, Ic and measurement circuits Ma, Mc, Mn of the protection device, the secondary protection test can be directly performed on the wiring terminals of the control panel. Zero-sequence overcurrent protection and overvoltage protection can be performed. After connecting the I0 and In terminals externally, the zero-sequence overcurrent protection test can be performed.

[0038] It is worth mentioning that this new teaching aid with high-voltage switchgear function can solve the difficulties of operation and maintenance personnel's few skill practice times, untimely theoretical learning and verification, and low skill improvement efficiency, so as to achieve integrated development of learning and practice. Operation and maintenance personnel can conduct practical exercises within the product functions, cultivate skilled and capable practical talents, and enable fresh graduates to quickly learn practical skills, without disconnecting theory from practice. In addition, the product design cost is low and the creative benefits are high, which can reduce some related expenses for external teachers and external practical training.

[0039] In addition, by tightly designing the spatial layout, integrating the same electrical principles, and merging the design of external wiring, it can be made small and easy to carry, while realizing various functions. It can be used in experimental classes, principle classes, practical classes, competition activities, etc., with rich application scenarios.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new teaching aid with high-voltage switchgear function, characterized in that: include: frame; The frame is connected with a circuit breaker (1), a power circuit breaker (2), a protection device (3), an intelligent control device (4), a wiring terminal (5), a protection pressure plate (6) and a control panel; The circuit breaker (1), the power circuit breaker (2), the protection device (3), the intelligent control device (4), the wiring terminal (5), and the protection pressure plate (6) are all electrically connected to the control panel.

2. The new teaching aid with high-voltage switchgear function according to claim 1 is characterized in that: Also includes: An indicator light (7) is connected to the frame and is electrically connected to the control panel.

3. The new teaching aid with high-voltage switchgear function according to claim 2 is characterized in that: The framework includes: Mounting plate (8); Two U-shaped support frames (9), both ends of which are connected to the bottom of the mounting plate (8); A connecting plate (10) connected between the bottoms of the two U-shaped support frames (9); The power circuit breaker (2), the protection device (3), the intelligent control device (4), the wiring terminal (5), the protection pressure plate (6), the indicator light (7) and the control panel are installed on the mounting plate (8), and the circuit breaker (1) is connected to the connecting plate (10).

4. The new teaching aid with high-voltage switchgear function according to claim 3 is characterized in that: A handle (11) is connected to the top of the mounting plate (8).

5. The novel teaching aid with high-voltage switchgear function according to any one of claims 1 to 4, characterized in that: Also includes: An outer box (12), wherein the frame is installed in the outer box (12).

6. The new teaching aid with high-voltage switchgear function according to claim 5 is characterized in that: Universal wheels (13) are installed at the bottom of the outer box (12).

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