Simulation platform compatible with circuit breaking equipment switch cabinet

Abstract

The invention provides a simulation platform compatible with a circuit on-off equipment switch cabinet, which is characterized by comprising a PC (Personal Computer) provided with a simulation system and a switch cabinet, the switch cabinet comprises a plurality of relay output units connected in parallel, circuit on-off equipment and a terminal strip, and the relay output units, the circuit on-off equipment and the terminal strip are connected in series. The switch cabinet is powered by a rectified power supply, a plurality of optical coupling isolation input units connected in parallel are connected in series with the terminal strip, a processor is connected in series between the optical coupling isolation input units and the relay output unit, and the PC is connected with the processor through a USB circuit. The reality sense of on-site operation can be realized, and the teaching experience of no on-site operation risk can be realized.

Description

Technical Field

[0001] The invention relates to the field of electrical control technology, and in particular to a simulation platform for a switch cabinet compatible with circuit breaking equipment. Background Art

[0002] The power-off operation of high-voltage circuit breaker equipment, such as maintenance-to-operation and operation-to-maintenance, is an operation item that must be mastered by operators in power plants, substations, etc. In daily work, the practical exercises of power-off operation of high-voltage circuit breaker equipment can only be learned by seeking opportunities to use actual operation opportunities at the production site, and personnel who have not obtained the operation qualification cannot actually operate it. At the same time, because the on-site equipment is directly connected to the electrical primary part, the risk of misoperation increases due to the operation and explanation. In addition, the training opportunities for the judgment and disposal of a series of fault phenomena such as the fault of the high-voltage circuit breaker equipment itself, the control circuit fault, and the motor and electrical fault are difficult to find, and can only be learned after the actual equipment on site fails. For a long time, the training process for the practical operation, fault judgment and disposal of high-voltage circuit breaker equipment has high risks and poor effects, and cannot meet the needs of pre-job and on-the-job training. The existing simulation platform teaching simulation is completed virtually on the circuit, without the real sense of on-site operation. For this reason, our company has developed a simulation platform compatible with the switch cabinet of circuit breaker equipment, which has both the real sense of on-site operation and no on-site operation risk. Summary of the invention

[0003] The present invention provides a simulation platform for a switch cabinet compatible with circuit breaking equipment to solve the technical defects of the above-mentioned prior art.

[0004] To solve the above technical problems, the technical solution of the present invention is a simulation platform for a switch cabinet compatible with a circuit breaking device, comprising a PC equipped with a simulation system, a switch cabinet, the switch cabinet comprising several parallel relay output units, a circuit breaking device, and a terminal block, the relay output unit, the circuit breaking device, and the terminal block are connected in series, the switch cabinet is powered by a rectified power supply, several parallel optocoupler isolation input units are connected in series with the terminal block, a processor is connected in series between the optocoupler isolation input unit and the relay output unit, and the PC is connected to the processor via a USB circuit.

[0005] Specifically, the processor of the simulation platform of the compatible circuit breaker switch cabinet is an ARM processor.

[0006] Specifically, the simulation platform of the compatible circuit breaking device switch cabinet, wherein the circuit breaking device is a vacuum circuit breaker.

[0007] Specifically, the simulation platform of the compatible circuit breaking device switch cabinet, wherein the circuit breaking device is an FC contactor.

[0008] Specifically, the simulation platform of the compatible circuit breaking equipment switch cabinet is a high-voltage switch cabinet.

[0009] Specifically, the simulation platform of the compatible circuit breaking equipment switch cabinet and the high-voltage switch cabinet simulate the operation of the motor.

[0010] Specifically, the simulation platform of the compatible circuit breaking device switch cabinet and the high-voltage switch cabinet simulate the operation of the transformer.

[0011] Specifically, the simulation platform of the compatible circuit breaking equipment switch cabinet is a low-voltage switch cabinet.

[0012] Specifically, in the simulation platform of the switch cabinet compatible with the circuit breaker, the primary side of the circuit breaker in the low-voltage switch cabinet is connected to a small motor, a transformer is connected between the primary side of the circuit breaker and the small motor, and a digital-to-analog conversion module is connected between the secondary side of the transformer and the processor.

[0013] Specifically, the small motor of the simulation platform of the compatible circuit breaking device switch cabinet is connected to a pump, the pump pipeline is connected to a metering device, and a digital-to-analog conversion module is connected between the metering device and the processor.

[0014] Due to the arrangement of the processor, the optical coupling isolation input unit and the USB circuit, the switch cabinet is connected to the centralized control operation simulation platform. The present invention has the following beneficial effects:

[0015] 1. The present invention combines the real switch cabinet with the virtual simulation training platform to realize the mutual communication of instructions and status, and provides a low-risk and effective training platform for the power generation and power supply operation personnel to practice the circuit breaking equipment and judge and deal with the faults.

[0016] 2. It can realize the circuit breaking equipment maintenance-to-operation and operation-to-maintenance operations on the switch cabinet that are exactly the same as on-site operations, and simulate the circuit breaking equipment and its load electrical faults with high precision on the simulation platform. The circuit breaking equipment is exactly the same as the on-site equipment, and can simulate all state conversion operations of the on-site equipment, and display the state changes on the simulation platform.

[0017] 3. The primary side of the circuit breaker is not actually connected to a load. If an erroneous operation occurs, there will be no actual risk of equipment damage or personal injury.

[0018] 4. The secondary circuit of the circuit breaker is highly consistent with the on-site equipment, which can help operators understand the wiring and control principles of the secondary circuit. The simulation platform can simulate the fault display of the quick-break protection of the phase-to-phase fault of the circuit breaker, and can also simulate the current equipment current and voltage parameters in the simulation platform DCS, providing operators with an electrical fault judgment and abnormal handling training platform to improve emergency handling capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0020] Figure 1 A simulation platform design block diagram of a switch cabinet compatible with circuit breaker equipment of the present invention DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application. Unless otherwise defined, the technical terms or scientific terms used herein should be the usual meanings understood by people with general skills in the field to which this application belongs.

[0022] The specific implementation modes of the present invention are described in detail and completely below in conjunction with the accompanying drawings.

[0023] like Figure 1As shown, a simulation platform for a switch cabinet compatible with a circuit breaker device includes a PC equipped with a simulation system, a switch cabinet, the switch cabinet includes several parallel relay output units, a circuit breaker device, and a terminal block, the relay output unit, the circuit breaker device, and the terminal block are connected in series, the switch cabinet is powered by a rectified power supply, several parallel optocoupler isolation input units are connected in series with the terminal block, a processor is connected in series between the optocoupler isolation input unit and the relay output unit, and the PC is connected to the processor via a USB circuit. The optocoupler input is mainly used for connection with the circuit breaker device action feedback signal and human-computer interaction input, and any optocoupler input will be synchronized to the host computer via USB; and the relay output is mainly used for PC command output during simulation training. The closed-loop design of teaching and training is realized through the optocoupler input and relay output. When the switch state changes, after the auxiliary contacts corresponding to different states are connected, the state information enters the corresponding position terminal block, and is collected and converted by the optocoupler connected to the corresponding photon card and input into the processor. The processor aggregates and converts the signals collected by the optocoupler and inputs them to the computer motherboard through the network cable and USB port for processing, forming the corresponding circuit breaker status change signal in the simulation training system. When the virtual simulation training platform sends out a switch-on and switch-off command signal or a protection tripping and alarm signal, the signal is transmitted to the processor, which converts the signal to the switch-on and switch-off control circuit and alarm circuit of the circuit breaker body. The switch-on and switch-off coils are turned on to control the switch-on and switch-off, or the alarm circuit is connected, and the corresponding alarm indicator light on the real switch cabinet is on.

[0024] Specifically, the processor of the simulation platform of the compatible circuit breaker switch cabinet is an ARM processor, which has better data processing capability and better scalability.

[0025] Specifically, the simulation platform of the switch cabinet compatible with the circuit breaking device is a vacuum circuit breaker, which has a compact structure and is easy to operate.

[0026] Specifically, the simulation platform of the switch cabinet compatible with the circuit breaker device is a FC contactor, which has a simple structure and better adaptability and flexibility.

[0027] Specifically, the simulation platform of the compatible circuit breaking equipment switch cabinet is that the switch cabinet is a high-voltage switch cabinet, which is the main equipment during the operation of the power plant and conforms to the actual situation of the power plant.

[0028] Specifically, the simulation platform of the circuit-breaking device switch cabinet compatible with the high-voltage switch cabinet simulates the operation of the motor, and the high-voltage switch cabinet mainly controls the operation of the motor, which meets the teaching purpose.

[0029] Specifically, the simulation platform of the compatible circuit breaking equipment switch cabinet, the high-voltage switch cabinet simulates the operation of the transformer, and the high-voltage switch cabinet mainly controls the operation of the transformer, which meets the teaching purpose.

[0030] Specifically, the simulation platform compatible with the circuit breaker switch cabinet is that the switch cabinet is a low-voltage switch cabinet. When the low-voltage switch cabinet is used, the primary side of the circuit breaker device can be actually connected to the real device, combining teaching with practical operation.

[0031] Specifically, the simulation platform of the switch cabinet compatible with the circuit breaker device is connected to a small motor on the primary side of the circuit breaker device in the low-voltage switch cabinet. A transformer is connected to the primary side of the circuit breaker device and the small motor, and a digital-to-analog conversion module is connected between the secondary side of the transformer and the processor. Through the transformer and the digital-to-analog conversion module, a real small motor device can be connected, and the motor start, stop control and alarm simulation can be completed. By adding current transformers and voltage transformers, the secondary side voltage, ammeter and measurement and control cabinet can be used to simulate a certain factory motor on site in proportion, and the signal can be connected to the virtual simulation training platform.

[0032] Specifically, the simulation platform of the switch cabinet of the compatible circuit breaker device is connected to a small motor with a pump, the pump pipeline is connected to a metering device, and a digital-to-analog conversion module is connected between the metering device and the processor. The real pump body is physically connected to the small motor, and its current and other electrical quantity signal transmission is as described in the above embodiment. The outlet pressure and temperature of the water pump, the medium pressure, temperature, flow rate, and flow rate in other parts of the pipeline can be added to the real pressure gauge, temperature meter, flow rate meter, flow meter, and the data is converted through the analog-to-digital conversion module and connected to the ARM processor, and finally the signal is connected to the virtual simulation training platform.

[0033] The above description is merely an exemplary embodiment of the present application and is not intended to limit the protection scope of the present application. The protection scope of the present application is determined by the appended claims.

Claims

1. A simulation platform for switch cabinets compatible with circuit breaker equipment, characterized in that The invention comprises a PC equipped with a simulation system, a switch cabinet, the switch cabinet comprises a plurality of parallel relay output units, a circuit breaker device, and a terminal block, the relay output unit, the circuit breaker device, and the terminal block are sequentially connected in series, the switch cabinet is powered by a rectified power supply, a plurality of parallel optical coupling isolation input units are connected in series with the terminal block, a processor is connected in series between the optical coupling isolation input unit and the relay output unit, the PC and the processor are connected via a USB circuit catch.

2. A simulation platform for a compatible circuit breaker switch cabinet according to claim 1, characterized in that The processor is an ARM processor.

3. A simulation platform for a compatible circuit breaker switch cabinet according to claim 1, characterized in that The circuit breaking device is a vacuum circuit breaker.

4. A simulation platform for a compatible circuit breaker switch cabinet according to claim 1, characterized in that The circuit breaking device is a FC contactor.

5. The simulation platform for a compatible circuit breaker switch cabinet according to claim 1, characterized in that The switch cabinet is a high voltage switch cabinet.

6. A simulation platform for a compatible circuit breaker switch cabinet according to claim 5, characterized in that The high voltage switch cabinet simulates the operation of a motor.

7. A simulation platform for a compatible circuit breaker switch cabinet according to claim 5, characterized in that The high voltage switchgear simulates the operation of a transformer.

8. The simulation platform for a compatible circuit breaker switch cabinet according to claim 1, characterized in that The switch cabinet is a low voltage switch cabinet.

9. A simulation platform for a switch cabinet compatible with circuit breaker equipment according to claim 8, characterized in that The primary side of the circuit breaker in the low-voltage switch cabinet is connected to a small motor, the primary side of the circuit breaker and the small motor are connected with a mutual inductor, and a digital-to-analog conversion module is connected between the secondary side of the mutual inductor and the processor.

10. A simulation platform for a switch cabinet compatible with circuit breaker equipment according to claim 9, characterized in that The small motor is connected to a pump, the pump pipeline is connected to a metering device, and a digital-to-analog conversion module is connected between the metering device and the processor.

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