110kv circuit breaker secondary circuit training demonstration device and its calibration method

Abstract

The application relates to a 110kV circuit breaker secondary circuit training demonstration device and a checking method thereof. The device comprises a movable support and a demonstration board. The demonstration board is provided with an electrical diagram display area, a device display area, an operation area and a function checking area. The function checking area is provided with a closing checking module, an opening checking module and a fault condition checking module. The electrical diagram display area is provided with a circuit breaker secondary control circuit and a fault monitoring circuit. The operation area is provided with an operation switch. The device can display the switches and operation components required for the opening and closing operation of the 110kV circuit breaker on the same plane through the electrical diagram display area, the device display area, the operation area and the function checking area. The circuit breaker secondary control circuit and the fault monitoring circuit displayed on the electrical diagram display area are synchronously analyzed, the opening and closing operation of the 110kV circuit breaker secondary circuit can be accurately simulated and displayed to scholars, and an intuitive training effect is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substation secondary circuit training, and particularly relates to a 110kV circuit breaker secondary circuit training demonstration device and a verification method thereof. BACKGROUND

[0002] With the development of smart grid, in order to improve the fault analysis ability of substation operation and maintenance personnel at the grassroots level and strengthen the technical skill level, it is necessary to regularly train and learn the working principle and fault troubleshooting method of electrical equipment for operation and maintenance personnel in combination with professional needs, especially to comprehensively and intuitively analyze and learn the weak secondary control loop knowledge, so as to further enable the operation and maintenance personnel to have the operation and maintenance ability of fully guaranteeing the safety and reliability of daily operation and maintenance of substation equipment.

[0003] At present, the secondary control loop knowledge training of the 110kV circuit breaker of the substation is limited to entity institution display and substation on-site equipment teaching, since the components are installed in different planes of the substation and the local space may be severely limited, there is a lack of relatively intuitive and dedicated training space and facilities; in addition, the secondary loop wiring layout in the on-site equipment mechanism box is compact and difficult to clearly display the mutual correlation, which is a great test and difficulty for beginners of the maintenance profession; at the same time, the knowledge training process of the operation and maintenance personnel is greatly affected by outdoor environmental factors, which is not conducive to the normalization of skill training activities. Based on the above problems, there is an urgent need for an open and visual secondary loop training teaching device suitable for substation equipment to improve the fault troubleshooting and analysis ability and technical skill level of the secondary loop of the equipment of the front-line operation and maintenance personnel. SUMMARY

[0004] The embodiment of the present application provides a 110kV circuit breaker secondary circuit training demonstration device and a verification method thereof, which are used to solve the technical problem that the existing secondary control loop knowledge training of the 110kV circuit breaker of the substation cannot display the secondary loop wiring of the substation and the training effect is poor.

[0005] In order to achieve the above purpose, the embodiment of the present application provides the following technical scheme:

[0006] A 110kV circuit breaker secondary circuit training demonstration device, comprising a movable support and a demonstration board installed on the support, wherein the demonstration board is provided with an electrical diagram display area, a component display area, an operation area and a function verification area, the function verification area is provided with a closing verification module, an opening verification module and a fault condition verification module, the electrical diagram display area is provided with a circuit breaker secondary control loop and a fault monitoring loop, and the operation area is provided with an operation switch for controlling the operation of the circuit breaker secondary control loop and the fault monitoring loop.

[0007] The closing verification module is configured to control the fault monitoring circuit and the circuit breaker secondary control circuit to meet a closing condition by using the operation switch, and then perform closing verification by using a closing switch of the operation switch.

[0008] The opening verification module is configured to control the fault monitoring circuit and the circuit breaker secondary control circuit to meet an opening condition by using the operation switch, and then perform opening verification by using an opening switch of the operation switch.

[0009] The fault condition verification module is configured to perform fault condition verification according to the air pressure switch of the circuit breaker and the operation switch.

[0010] Preferably, the operation switch comprises a closing-opening conversion switch, an energy storage conversion switch, an energy storage switch, a near-far control switch, an anti-jump relay, a total locking relay, a closing switch and an opening switch; the circuit breaker secondary control circuit comprises a first opening circuit, a closing circuit and a second opening circuit; and the fault monitoring circuit comprises a motor circuit, a leakage circuit, a locking circuit, a mechanical closing locking circuit and an alarm element.

[0011] Preferably, the closing condition is that the closing-opening conversion switch is controlled to be tripped to an opening position, the energy storage conversion switch is controlled to be tripped to an energy storage-free position, the near-far control switch is controlled to be grounded, and the air pressure switch is tripped to an air pressure of 6.0 position, and then the energy storage switch and the total locking relay are started, the energy storage conversion switch of the motor circuit is controlled to be tripped to an energy storage position to make the contact of the energy storage conversion switch of the motor circuit disconnected, the alarm element lamp of the motor circuit is turned off, and the energy storage switch of the motor circuit is disconnected.

[0012] The closing verification by using the closing switch of the operation switch comprises that the closing switch is controlled to be started, the closing coil of the closing circuit is powered, and if the closing-opening conversion switch is controlled to be tripped to a closing position, the closing coil in the closing circuit loses power; and then the energy storage conversion switch is tripped to an energy storage-free position to complete the closing verification.

[0013] Preferably, the opening condition is that the closing-opening conversion switch is controlled to be tripped to a closing position, the energy storage conversion switch is controlled to be tripped to an energy storage-free position, the near-far control switch is controlled to be grounded, and the air pressure switch is tripped to an air pressure of 6.0 position, and then the total locking relay is started.

[0014] The opening verification by using the opening switch of the operation switch comprises that the opening switch is controlled to be started, the opening coil of the first opening circuit is powered, and if the closing-opening conversion switch is controlled to be tripped to an opening position, the opening coil of the first opening circuit loses power to complete the opening verification.

[0015] Preferably, the fault condition verification according to the air pressure switch of the circuit breaker and the operation switch comprises: if the air pressure switch is controlled to be tripped to the air pressure 5.2 position, the alarm element of the leakage circuit works; if the air pressure switch is controlled to be tripped to the air pressure 5.0 position, the normally closed contact of the total locking relay of the leakage circuit and the total locking relay of the circuit breaker secondary control circuit are opened, and the alarm element of the leakage circuit and the total locking relay of the locking circuit work.

[0016] Preferably, the fault condition verification according to the air pressure switch of the circuit breaker and the operation switch further comprises: if the closing switch is started, the anti-jump relay of the closing circuit is powered, the normally closed contact of the anti-jump relay is opened, and the closing circuit is disconnected; and then if the closing switch is closed, the anti-jump relay of the closing circuit is powered off, and the fault condition verification is completed.

[0017] Preferably, the 110kV circuit breaker secondary circuit training demonstration device comprises a driving display module for driving the display elements to operate, wherein the display elements are installed at the connection positions of each device of the circuit breaker secondary control circuit and are used for monitoring the operating conditions of the circuit breaker secondary control circuit in real time; the driving display module comprises a microprocessor, a display driving submodule and a signal transmission submodule connected with the microprocessor, the microprocessor is used for outputting an electric signal for controlling the operation of the display elements, and the display driving submodule and the signal transmission submodule are used for transmitting the electric signal to the display elements.

[0018] The application further provides a verification method of the 110kV circuit breaker secondary circuit training demonstration device, which is applied to the 110kV circuit breaker secondary circuit training demonstration device and comprises the following steps:

[0019] The fault monitoring circuit and the circuit breaker secondary control circuit are controlled to meet the closing condition through the operation switch, and then the closing verification is performed through the closing switch of the operation switch;

[0020] The fault monitoring circuit and the circuit breaker secondary control circuit are controlled to meet the opening condition through the operation switch, and then the opening verification is performed through the opening switch of the operation switch;

[0021] The fault condition verification is performed according to the air pressure switch of the circuit breaker and the operation switch;

[0022] The closing condition is that: the control switch is thrown to the open position, the energy storage switch is thrown to the non-energy storage position, the near and far control switch is grounded, and the air pressure switch is thrown to the air pressure 6.0 position, then the energy storage switch and the total locking relay are started, the control switch is thrown to the closed position, the energy storage switch of the motor circuit is disconnected, the alarm element of the motor circuit is turned off, and the energy storage switch of the motor circuit is disconnected.

[0023] The opening condition is that: the control switch is thrown to the closed position, the energy storage switch is thrown to the non-energy storage position, the near and far control switch is grounded, and the air pressure switch is thrown to the air pressure 6.0 position, then the total locking relay is started.

[0024] Preferably, the closing verification by the closing switch of the operating switch includes: the closing switch is controlled to start, the closing coil of the closing circuit is powered, and if the control switch is thrown to the closed position, the closing coil in the closing circuit is powered off; then the energy storage switch is thrown to the non-energy storage position, and the closing verification is completed.

[0025] The opening verification by the opening switch of the operating switch includes: the opening switch is controlled to start, the opening coil of the first opening circuit is powered, and if the control switch is thrown to the open position, the opening coil of the first opening circuit is powered off, and the opening verification is completed.

[0026] Preferably, the fault condition verification according to the air pressure switch of the circuit breaker and the operating switch includes:

[0027] If the air pressure switch is controlled to be thrown to the air pressure 5.2 position, the alarm element of the leakage circuit works.

[0028] If the air pressure switch is controlled to be thrown to the air pressure 5.0 position, the total locking relay of the locking circuit is controlled to work, and the normally closed contact of all total locking relays in the secondary control circuit of the circuit breaker is opened, then the alarm elements of the leakage circuit and the locking circuit work.

[0029] The control switch is thrown to the closed position and the near and far control switch is grounded, if the closing switch is started, the anti-jump relay of the closing circuit is powered, the normally closed contact of the anti-jump relay is opened, then the closing circuit is disconnected; then if the closing switch is closed, the anti-jump relay of the closing circuit is powered off, and the fault condition verification is completed.

[0030] From the above technical scheme can be seen, the present application embodiment has the following advantages: the 110kV circuit breaker secondary circuit training demonstration device and its checking method, the 110kV circuit breaker secondary circuit training demonstration device includes the movable support and demonstration board, is provided with electrical diagram display area, device display area, operation area and function checking area on demonstration board, is provided with closing checking module, opening checking module and fault condition checking module on function checking area, is provided with circuit breaker secondary control circuit and fault monitoring circuit on electrical diagram display area, operation area is provided with operation switch for controlling the operation of circuit breaker secondary control circuit and fault monitoring circuit. The 110kV circuit breaker secondary circuit training demonstration device can display the switch and operation and other components required for the 110kV circuit breaker opening and closing operation on the same plane through electrical diagram display area, device display area, operation area and function checking area, combined with the circuit breaker secondary control circuit and fault monitoring circuit displayed on electrical diagram display area for synchronous analysis, can accurately simulate the secondary circuit in 110kV circuit breaker opening and closing operation, and show to the scholar, provide intuitive training effect;Also through the closing checking module, opening checking module and fault condition checking module of function checking area, after setting fault defects manually, realize fault point troubleshooting training teaching through the cooperation between operation area, electrical diagram display area and device display area, enhance the training effect, solve the technical problem that the existing secondary control circuit knowledge training of 110kV circuit breaker of substation cannot display the secondary circuit wiring of substation, and the training effect is poor. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0032] Figure 1 The structural schematic diagram of the 110kV circuit breaker secondary circuit training demonstration device described in the embodiments of the present application;

[0033] Figure 2 The electrical schematic diagram of circuit breaker secondary control circuit in the 110kV circuit breaker secondary circuit training demonstration device described in the embodiments of the present application;

[0034] Figure 3 The electrical schematic diagram of fault monitoring circuit in the 110kV circuit breaker secondary circuit training demonstration device described in the embodiments of the present application;

[0035] Figure 4 The frame diagram of driving display module in the 110kV circuit breaker secondary circuit training demonstration device described in the embodiments of the present application. Detailed Implementation

[0036] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0037] This application proposes a training demonstration device and verification method for the secondary circuit of a 110kV circuit breaker, which solves the technical problem that existing training on the secondary control circuit of a 110kV circuit breaker in substations cannot demonstrate the wiring of the secondary circuit of the substation, resulting in poor training effectiveness.

[0038] Example 1:

[0039] Figure 1 This is a schematic diagram of the structure of the 110kV circuit breaker secondary circuit training and demonstration device according to an embodiment of the present invention. Figure 2 This is the electrical schematic diagram of the secondary control circuit of the 110kV circuit breaker secondary circuit training demonstration device according to an embodiment of the present invention. Figure 3 This is the electrical schematic diagram of the fault monitoring circuit in the 110kV circuit breaker secondary circuit training demonstration device according to an embodiment of the present invention. Figure 4 This is a framework diagram of the drive display module in the 110kV circuit breaker secondary circuit training demonstration device according to an embodiment of the present invention.

[0040] like Figures 1 to 2 As shown, the present invention provides a training and demonstration device for the secondary circuit of a 110kV circuit breaker, including a movable bracket 10 and a demonstration board 20 mounted on the bracket 10. The demonstration board 20 is provided with an electrical diagram display area 21, a device display area 22, an operation area 23, and a function verification area 24. The function verification area 24 is provided with a closing verification module 241, a opening verification module 242, and a fault verification module 243. The electrical diagram display area 21 is provided with a secondary control circuit and a fault monitoring circuit of the circuit breaker. The operation area 23 is provided with an operation switch for controlling the operation of the secondary control circuit and the fault monitoring circuit of the circuit breaker.

[0041] It should be noted that the demonstration board 20 integrates the drawing, the physical diagram, the physical element, the verification module and the like, and through the device display area 22, the operation switch required for the opening and closing operation of the 110kV circuit breaker is laid out and displayed on the same plane, the secondary control circuit, the fault monitoring circuit, the closing verification module, the opening verification module and the fault condition verification module of the circuit breaker are combined for analysis, the complete control process of the secondary circuit in the opening and closing operation of the 110kV circuit breaker is simulated in a 1:1 ratio, and the corresponding relationship between the 110kV circuit breaker equipment and the secondary drawing, the practicality of personnel participation, the observability of switching change and the operability of fault troubleshooting and measurement are increased.

[0042] As shown in Figure 1 In the embodiment of the present application, the support 10 is used for supporting the demonstration board 20.

[0043] It should be noted that the support 10 includes a support frame 11 and a pulley 12 installed at the bottom end of the support frame 11. The support 10 of the 110kV circuit breaker secondary circuit training demonstration device moves the demonstration board 20 through the pulley 12, and the classroom training of the 110kV circuit breaker secondary circuit training demonstration device can be realized in combination with the light weight and small size of the demonstration board 20. The device can be used for practical operation at any time and anywhere, and the device can also be set with faults for competition to find defects.

[0044] As shown in Figure 2 and Figure 3 In the embodiment of the present application, the electrical diagram display area 21 is used for displaying the electrical principle diagram of the circuit breaker secondary control circuit and the fault monitoring circuit. The circuit breaker secondary control circuit includes a first opening circuit, a closing circuit and a second opening circuit. The fault monitoring circuit includes a motor circuit, a leakage circuit, a locking circuit, a mechanical closing locking circuit and an alarm element.

[0045] It should be noted that the motor circuit, the leakage circuit, the locking circuit and the mechanical closing locking circuit are each provided with an alarm element for warning. The alarm element can be an LED lamp.

[0046] As shown in Figure 1 In the embodiment of the present application, the device display area 22 is used for displaying each component in the circuit breaker secondary control circuit and the fault monitoring circuit.

[0047] It should be noted that the components include an opening and closing switch S1, an energy storage conversion switch S16, an opening switch S3, a closing switch S9, an energy storage switch F1, a near and far control switch S8, an execution element M, a pressure gauge B4, an anti-jump relay K75, a total locking relay K10 and the like. The execution element M can be a motor.

[0048] As shown in Figure 1As shown, in this embodiment of the invention, the operating area 23 is used to house the operating switches for controlling the operation of the secondary control circuit and fault monitoring circuit of the circuit breaker. The operating switches include a trip / close changeover switch S1, an energy storage changeover switch S16, a trip switch S3, a close switch S9, an energy storage switch F1, a near / remote control switch S8, an anti-pumping relay K75, and a main lockout relay K10.

[0049] It should be noted that terminal block X1, main power switch F3, etc. are installed on the operating area 23. Terminal block X1 is connected to each connection terminal of the secondary control circuit and fault monitoring circuit of the control circuit breaker, which facilitates the detection of the voltage of each connection terminal of the secondary control circuit and fault monitoring circuit of the control circuit breaker through terminal block X1, and determines whether the secondary control circuit and fault monitoring circuit of the control circuit breaker are normal. This greatly promotes the rapid mastery of the secondary circuit principle and fault diagnosis method by substation workers, saves the training cost of workers, and greatly improves the quality and efficiency of training.

[0050] like Figure 1 As shown, in this embodiment of the invention, the voltage of both the secondary control circuit and the fault monitoring circuit of the circuit breaker adopts 220V AC mains input, which has a high degree of matching with the external power supply.

[0051] like Figure 1 As shown, in this embodiment of the invention, the closing verification module 241 controls the fault monitoring circuit and the secondary control circuit of the circuit breaker to meet the closing conditions through an operating switch, and then performs closing verification using the closing switch of the operating switch. The opening verification module 242 controls the fault monitoring circuit and the secondary control circuit of the circuit breaker to meet the opening conditions through an operating switch, and then performs opening verification using the opening switch of the operating switch. The fault condition verification module 243 performs fault condition verification based on the circuit breaker's pneumatic switch and operating switch.

[0052] It should be noted that this 110kV circuit breaker secondary circuit training demonstration device, through the cooperation of four areas—functional verification area 24, operation area 23, electrical diagram display area 21, and device display area 22—can accurately simulate the secondary circuit during the opening and closing operations of a 110kV circuit breaker and display it to trainees, providing an intuitive training effect. Furthermore, through the closing verification module 241, opening verification module 242, and fault condition verification module 243 in the functional verification area, after manually setting fault defects, the cooperation between the operation area 23, electrical diagram display area 21, and device display area 22 enables fault point troubleshooting training.

[0053] The 110kV circuit breaker secondary circuit training demonstration device provided by the application comprises a movable support and a demonstration board, the demonstration board is provided with an electrical diagram display area, a device display area, an operation area and a function verification area, the function verification area is provided with a closing verification module, a tripping verification module and a fault condition verification module, the electrical diagram display area is provided with a circuit breaker secondary control circuit and a fault monitoring circuit, and the operation area is provided with an operation switch for controlling the operation of the circuit breaker secondary control circuit and the fault monitoring circuit. The 110kV circuit breaker secondary circuit training demonstration device can display the switches and operation elements required for the opening and closing operation of the 110kV circuit breaker on the same plane through the electrical diagram display area, the device display area, the operation area and the function verification area, and can accurately simulate the secondary circuit in the opening and closing operation of the 110kV circuit breaker, and can display the simulation to the scholars, so that an intuitive training effect is provided. The closing verification module, the tripping verification module and the fault condition verification module of the function verification area can realize the setting of the fault defects by the artificial, and then the cooperation between the operation area, the electrical diagram display area and the device display area can realize the troubleshooting training teaching, so that the training effect is enhanced, and the technical problems that the secondary control circuit knowledge training of the 110kV circuit breaker of the existing transformer substation cannot display the secondary circuit wiring of the transformer substation and the training effect is poor are solved.

[0054] In an embodiment of the application, the closing condition is that: the control switch S1 is thrown to the tripping position, the energy storage switch S16 is thrown to the non-energy storage position, the near and far control switch S8 is grounded, and the air pressure switch SF6 is thrown to the air pressure 6.0 position. Then, the energy storage switch F1 and the total locking relay K10 are started, the energy storage switch S16 is thrown to the energy storage position, the contact of the energy storage switch S16 of the motor circuit is disconnected, the alarm element lamp of the motor circuit is turned off, and the energy storage switch F1 of the motor circuit is disconnected.

[0055] The closing verification by the closing switch of the operation switch comprises: the closing switch S9 is started, the closing coil Y1 of the closing circuit is powered, and if the control switch S1 is thrown to the closing position, the closing coil Y1 in the closing circuit is powered off. Then, the energy storage switch S16 is thrown to the non-energy storage position, and the closing verification is completed.

[0056] It should be noted that when the closing verification module 241 is in the closing condition, it indicates that the circuit breaker secondary control circuit is in the tripping state and is waiting for closing. In this embodiment, as shown in Figure 1 and Figure 2 After the energy storage switch F1 and the total locking relay K10 are started, it indicates that the motor circuit lamp is on, the execution element M1 is powered, and it indicates that the spring of the closing switch starts to store energy. Throwing the energy storage switch S16 to the energy storage position indicates that the actual energy storage of the 110kV circuit breaker is completed.

[0057] In one embodiment of the present application, the tripping condition is that the control switch S1 is thrown to the closed position, the energy storage switch S16 is thrown to the non-energy storage position, the near and far control switch S8 is grounded, and the air pressure switch SF6 is thrown to the air pressure 6.0 position, and then the total locking relay K10 is started;

[0058] The tripping verification by the tripping switch of the operation switch includes that the tripping switch S3 is controlled to be started, the tripping coil Y3 of the first tripping circuit is powered, and if the control switch S1 is thrown to the tripping position, the tripping coil Y3 of the first tripping circuit is powered off, and the tripping verification is completed.

[0059] It should be noted that when the tripping verification module 242 is in the tripping condition, it indicates that the breaker secondary control circuit is in the closed state and waits for tripping. In the embodiment, the air pressure switch SF6 is thrown to the air pressure 6.0 position, indicating that the air pressure of the 110kV breaker is normal. After the tripping switch S3 is controlled to be started, all the display elements on the first tripping circuit are lit.

[0060] As shown in FIG. 2, in one embodiment of the present application, the fault condition verification according to the breaker air pressure switch SF6 and the operation switch includes that: Figure 3 If the air pressure switch SF6 is controlled to be thrown to the air pressure 5.2 position, the alarm element of the leakage circuit works;

[0061] If the air pressure switch SF6 is controlled to be thrown to the air pressure 5.0 position, the total locking relay K10 of the locking circuit is controlled to work, and the normally closed contact of all the total locking relays K10 in the breaker secondary control circuit is opened, then the alarm elements of the leakage circuit and the locking circuit work;

[0062] The control switch S1 is thrown to the closed position and the near and far control switch S8 is grounded, if the closing switch S9 is started, the anti-jump relay K75 of the closing circuit is powered, the normally closed contact of the anti-jump relay K75 is opened, and then the closing circuit is disconnected; and if the closing switch S9 is closed, the anti-jump relay K75 of the closing circuit is powered off, and the fault condition verification is completed.

[0063]

[0064] ​It should be noted that controlling the pressure switch SF6 to the pressure 5.2 position can simulate a chamber pressure in a 110kV circuit breaker where the pressure is below 5.2 and above 5.0. Controlling the pressure switch to the pressure 5.0 position can simulate a chamber pressure below 5.0. In this embodiment, controlling the pressure switch SF6 to the pressure 5.0 position activates the main locking relay K10 in the locking circuit and opens the normally closed contacts of all main locking relays K10 in the secondary control circuit of the circuit breaker, indicating that the secondary control circuit of the circuit breaker cannot perform opening or closing operations. When the closing switch S9 is activated, the anti-pumping relay K75 in the closing circuit is energized, and its normally closed contact opens, thus disconnecting the closing circuit, indicating that the secondary control circuit of the circuit breaker can effectively prevent the circuit breaker from tripping.

[0065] like Figure 4 As shown, in one embodiment of the present invention, the 110kV circuit breaker secondary circuit training demonstration device includes a drive display module, which is used to drive the operation of the display element LED. Display elements are installed at the connection points of various devices in the secondary control circuit of the circuit breaker, and the display elements are used to monitor the operation status of the secondary control circuit of the circuit breaker in real time. The drive display module includes a microprocessor and a display drive submodule and a signal transmission submodule connected to the microprocessor. The microprocessor is used to output electrical signals to control the operation of the display elements, and the display drive submodule and the signal transmission submodule are used to transmit the electrical signals to the display elements.

[0066] It should be noted that LED display elements are installed on the electrical diagram display area corresponding to the connection points of each component in the secondary control circuit of the circuit breaker. These LED display elements and alarm elements monitor in real time whether components such as the opening / closing transfer switch S1, energy storage transfer switch S16, opening switch S3, closing switch S9, energy storage switch F1, near / remote control switch S8, actuator M, pressure gauge B4, anti-pumping relay K75, and main lockout relay K10 have normal operating electrical signals. For example: if the LED display element or alarm element corresponding to a component displays a green indicator light, it indicates that the component is working normally, representing that the component's contacts are closed, the coil is energized, or the corresponding circuit is conductive; if the LED display element or alarm element corresponding to a component displays a red indicator light, it indicates that the component is not working normally, representing that the component's contacts are open, the coil is de-energized, or the corresponding circuit is not conductive; if the LED display element or alarm element corresponding to a component displays a flashing indicator light, it indicates that the component or its corresponding circuit has malfunctioned. The 110kV circuit breaker secondary circuit training and demonstration device can clearly display the specific operating status of the secondary control circuit through display elements.

[0067] In this embodiment of the invention, the voltage driving the display module is AC 220V converted to DC 5V, providing operating voltage to the microprocessor and all display components. The AC 220V to DC 5V conversion involves rectification, step-down, regulation, and filtering to output DC 5V, which is then transmitted to the microprocessor as a switching signal.

[0068] It should be noted that the drive display module converts four channels of AC 220V voltage / six channels of DC 220V voltage into DC 5V voltage through rectification, step-down, regulation, and filtering via an external power input port. This voltage is then sent to the microprocessor, and the display driver submodule transmits the electrical signals to the LED control ports connected to the display elements to achieve signal display. Simultaneously, the signal transmission submodule can transmit switching signals to the microprocessor for display element control. In this embodiment, the drive display module can also directly control all display elements through programming code, greatly simplifying the number of components in the circuit breaker's secondary control circuit. The circuit breaker's secondary control circuit uses 220V AC mains input, ensuring high compatibility with external power supplies. The display elements use AC 220V to DC 5V voltage to provide operating voltage to the microprocessor and all LED indicator lights, and also provide power for the switching signal conversion of the components. The display driver submodule applies the electrical signals from the microprocessor to the LED control port, thereby achieving precise control of the display element. The signal transmission submodule removes noise, malfunctions, and errors from the electrical signals before connecting them to the microprocessor. This allows for precise capture of the control signals required by the secondary control circuit of the circuit breaker, enabling flexible control of the display element's on / off state.

[0069] In this embodiment of the invention, the 110kV circuit breaker secondary circuit training and demonstration device has display elements corresponding to the connection points of each component in the circuit breaker's secondary control circuit and fault monitoring circuit. These display elements monitor whether there are conductive electrical signals at the connection points of each component in the circuit breaker's secondary control circuit, providing a clear and intuitive display of the specific operating status of the circuit breaker's secondary control circuit. This 110kV circuit breaker secondary circuit training and demonstration device, after comprehensively considering the current situation and actual needs of substation maintenance personnel, uses a planar layout for the switches and operating components required for the opening and closing operations of the 110kV circuit breaker. A drive display module is used to install monitoring display elements at the connection points of each component in the circuit breaker's secondary control circuit, thereby monitoring the conduction signal status at the connection points of the circuit components in real time. This greatly simplifies the number of components controlling the circuit breaker's secondary control circuit, enabling visual analysis of the circuit breaker's secondary control circuit and helping operators to carry out equipment inspection and maintenance troubleshooting work in a timely and accurate manner. In addition, the demonstration board is characterized by its mobility, light weight, and small size through its support frame. Combined with functional verification methods in various scenarios, it can realize classroom-style training, save on training costs for operators, improve training quality and efficiency, and fill the gap in the current market for teaching demonstration devices for troubleshooting secondary circuit faults in high-voltage switchgear.

[0070] Example 2:

[0071] The present invention also provides a verification method for a 110kV circuit breaker secondary circuit training demonstration device, which is applied to the aforementioned 110kV circuit breaker secondary circuit training demonstration device. The verification method includes the following steps:

[0072] The fault monitoring circuit and the secondary control circuit of the circuit breaker are controlled by operating the switch to meet the closing conditions, and then the closing switch of the operating switch is used to verify the closing.

[0073] The fault monitoring circuit and the secondary control circuit of the circuit breaker are controlled by operating the switch to meet the tripping conditions, and then the tripping switch of the operating switch is used to verify the tripping.

[0074] Fault verification is performed based on the circuit breaker's pressure switch and operating switch;

[0075] The closing conditions are as follows: control the opening and closing switch to the open position, the energy storage switch to the non-energy storage position, control the near and far control switch to ground, and set the air pressure switch to the air pressure 6.0 position. Then, start the energy storage switch and the main lockout relay, control the energy storage switch to the energy storage position so that the contacts of the energy storage switch in the motor circuit are open, the alarm element light in the motor circuit is off, and the energy storage switch in the motor circuit is disconnected.

[0076] The tripping conditions are as follows: control the tripping / closing selector switch to the closed position, the energy storage selector switch to the non-energy storage position, control the near-remote control switch to ground, and set the air pressure switch to the air pressure 6.0 position, and then activate the main interlocking relay.

[0077] In this embodiment of the invention, the closing verification using the closing switch of the operating switch includes: controlling the closing switch to start, energizing the closing coil of the closing circuit; if the control switch to open / close is thrown to the closing position, the closing coil in the closing circuit is de-energized; then the energy storage switch is thrown to the non-energy storage position to complete the closing verification.

[0078] The tripping verification using the tripping switch includes: controlling the tripping switch to start, energizing the tripping coil of the first tripping circuit; if the tripping / closing selector switch is thrown to the tripping position, the tripping coil of the first tripping circuit is de-energized, thus completing the tripping verification.

[0079] In this embodiment of the invention, fault verification based on the circuit breaker's pneumatic switch and operating switch includes:

[0080] If the control air pressure switch is set to the air pressure 5.2 position, the alarm element of the leakage circuit will be activated;

[0081] If the control air pressure switch is set to the air pressure 5.0 position, the main lockout relay of the control lockout circuit will operate and the normally closed contacts of all main lockout relays in the secondary control circuit of the circuit breaker will open, and the alarm elements of the leakage circuit and the lockout circuit will both operate.

[0082] The control switch for opening and closing is set to the closing position and the near-to-remote control switch is grounded. If the closing switch is started, the anti-pumping relay in the closing circuit is energized and its normally closed contact opens, thus disconnecting the closing circuit. If the closing switch is then closed, the anti-pumping relay in the closing circuit is de-energized, completing the fault condition verification.

[0083] It should be noted that the content of the 110kV circuit breaker secondary circuit training demonstration device in Embodiment 2 has already been described in Embodiment 1, and the content of the 110kV circuit breaker secondary circuit training demonstration device will not be described again in this Embodiment 2.

[0084] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0085] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0086] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0087] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0088] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention, such as a hard disk or other media capable of storing program code.

[0089] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A training and demonstration device for the secondary circuit of a 110kV circuit breaker, comprising a movable support and a demonstration board mounted on the support, characterized in that, The demonstration board is equipped with an electrical diagram display area, a component display area, an operation area, and a function verification area. The function verification area is equipped with a closing verification module, a opening verification module, and a fault condition verification module. The electrical diagram display area is equipped with a circuit breaker secondary control circuit and a fault monitoring circuit. The operation area is equipped with operation switches for controlling the operation of the circuit breaker secondary control circuit and the fault monitoring circuit. The closing verification module is used to control the fault monitoring circuit and the secondary control circuit of the circuit breaker to meet the closing conditions through the operation switch, and then use the closing switch of the operation switch to perform closing verification. The trip verification module is used to control the fault monitoring circuit and the secondary control circuit of the circuit breaker to meet the tripping conditions through the operation switch, and then use the tripping switch of the operation switch to perform tripping verification. The fault condition verification module is used to verify the fault condition based on the gas pressure switch of the circuit breaker and the operating switch. The operating switches include a trip / close switch, an energy storage switch, an energy storage switch, a near / remote control switch, an anti-pumping relay, a main interlocking relay, a closing switch, and a trip switch; the circuit breaker secondary control circuit includes a first trip circuit, a closing circuit, and a second trip circuit; the fault monitoring circuit includes a motor circuit, a leakage circuit, an interlocking circuit, a mechanical closing interlocking circuit, and alarm elements. The fault condition verification based on the circuit breaker's pressure switch and the operating switch includes: if the pressure switch is controlled to the 5.2 pressure position, the alarm element of the leakage circuit will be activated; if the pressure switch is controlled to the 5.0 pressure position, the main lockout relay of the lockout circuit will be activated and all normally closed contacts of the main lockout relays in the secondary control circuit of the circuit breaker will be opened, then the alarm elements of both the leakage circuit and the lockout circuit will be activated. The fault verification based on the circuit breaker's pneumatic switch and the operating switch also includes: controlling the opening / closing selector switch to the closing position and grounding the near / remote control switch; if the closing switch is activated, the anti-pumping relay of the closing circuit is energized and the normally closed contact of the anti-pumping relay opens, thus disconnecting the closing circuit; subsequently, if the closing switch is closed, the anti-pumping relay of the closing circuit is de-energized, completing the fault verification.

2. The 110kV circuit breaker secondary circuit training and demonstration device according to claim 1, characterized in that, The closing conditions are as follows: control the opening / closing switch to the opening position, control the energy storage switch to the non-energy storage position, control the near / remote control switch to ground, and control the air pressure switch to the air pressure 6.0 position. Then, start the energy storage switch and the main interlocking relay, control the energy storage switch to the energy storage position so that the contacts of the energy storage switch of the motor circuit are open, the alarm element light of the motor circuit is turned off, and the energy storage switch of the motor circuit is disconnected. The closing verification using the closing switch of the aforementioned operating switch includes: controlling the closing switch to start, energizing the closing coil of the closing circuit; if the opening / closing selector switch is switched to the closing position, the closing coil in the closing circuit is de-energized; then the energy storage selector switch is switched to the non-energy storage position to complete the closing verification.

3. The 110kV circuit breaker secondary circuit training and demonstration device according to claim 1, characterized in that, The tripping conditions are as follows: control the tripping / closing switch to the closed position, the energy storage switch to the non-energy storage position, control the near-to-remote control switch to ground, and set the air pressure switch to the air pressure 6.0 position, and then activate the main lockout relay; The tripping verification using the tripping switch of the aforementioned operating switch includes: controlling the tripping switch to start, energizing the tripping coil of the first tripping circuit; if the tripping-closing selector switch is switched to the tripping position, the tripping coil of the first tripping circuit is de-energized, thus completing the tripping verification.

4. The 110kV circuit breaker secondary circuit training and demonstration device according to claim 1, characterized in that, The circuit breaker includes a drive display module for driving the operation of display elements. The display elements are installed at the connection points of various devices in the secondary control circuit of the circuit breaker and are used to monitor the operating status of the secondary control circuit of the circuit breaker in real time. The drive display module includes a microprocessor and a display drive submodule and a signal transmission submodule connected to the microprocessor. The microprocessor is used to output electrical signals to control the operation of the display elements, and the display drive submodule and the signal transmission submodule are used to transmit the electrical signals to the display elements.

5. A verification method for a training demonstration device for the secondary circuit of a 110kV circuit breaker, characterized in that, When applied to the 110kV circuit breaker secondary circuit training demonstration device as described in any one of claims 1-4, the verification method includes the following steps: The fault monitoring circuit and the secondary control circuit of the circuit breaker are controlled by operating the switch to meet the closing conditions, and then the closing switch of the operating switch is used to perform the closing verification. The fault monitoring circuit and the secondary control circuit of the circuit breaker are controlled by the operation switch to meet the tripping conditions, and then the tripping verification is performed by the tripping switch of the operation switch. The fault condition is verified based on the circuit breaker's air pressure switch and the operating switch; The closing conditions are as follows: control the opening / closing switch to the opening position, the energy storage switch to the non-energy storage position, control the near / remote control switch to ground, and set the air pressure switch to the air pressure 6.0 position. Then, start the energy storage switch and the main interlocking relay, control the energy storage switch to the energy storage position so that the contacts of the energy storage switch in the motor circuit are open, the alarm element light in the motor circuit is off, and the energy storage switch in the motor circuit is disconnected. The tripping conditions are as follows: control the tripping / closing switch to the closed position, the energy storage switch to the non-energy storage position, control the near-to-remote control switch to ground, and set the air pressure switch to the air pressure 6.0 position, and then activate the main lockout relay.

6. The verification method for the 110kV circuit breaker secondary circuit training demonstration device according to claim 5, characterized in that, The closing verification using the closing switch of the aforementioned operating switch includes: controlling the closing switch to start, energizing the closing coil of the closing circuit; if the opening / closing selector switch is switched to the closing position, the closing coil in the closing circuit is de-energized; then the energy storage selector switch is switched to the non-energy storage position to complete the closing verification. The tripping verification using the tripping switch of the aforementioned operating switch includes: controlling the tripping switch to start, energizing the tripping coil of the first tripping circuit; if the tripping-closing selector switch is switched to the tripping position, the tripping coil of the first tripping circuit is de-energized, thus completing the tripping verification.

7. The verification method for the 110kV circuit breaker secondary circuit training demonstration device according to claim 5, characterized in that, Fault verification based on the circuit breaker's pressure switch and the operating switch includes: If the pressure switch is set to the pressure 5.2 position, the alarm element of the leakage circuit will activate. If the pressure switch is set to the 5.0 pressure position, the main lockout relay of the control lockout circuit is activated, and the normally closed contacts of all main lockout relays in the secondary control circuit of the circuit breaker are opened, then the alarm elements of the leakage circuit and the lockout circuit will both be activated. Controlling the opening / closing switch to the closing position and grounding the near / remote control switch, if the closing switch is activated, the anti-pumping relay of the closing circuit is energized and the normally closed contact of the anti-pumping relay opens, thus disconnecting the closing circuit; subsequently, if the closing switch is closed, the anti-pumping relay of the closing circuit is de-energized, completing the fault condition verification.

Images