CN201508645U - Low-voltage comprehensive analog fault device - Google Patents

Abstract

The utility model provides a low-voltage comprehensive fault simulation device. The low-voltage comprehensive fault simulation device comprises a fault simulation cabinet and a power box, wherein, the fault simulation cabinet is used for simulating illumination fault and power fault; the power box is used for switching on/off a power supply and switching voltage, and the fault simulation cabinet is electrically connected with the power box. The utility model overcomes the problems of the conventional fault simulation training device that the fault capable of being simulated is less, and the illumination fault and the power fault cannot be simulated comprehensively, thereby achieving better training effect.

Description

Low-voltage comprehensive analog fault device

technical field

The utility model relates to the field of electric power, in particular to a low-voltage comprehensive simulation fault device.

Background technique

At present, most of the distribution technicians in rural power grids are distributed in remote production positions and lack systematic learning in power systems. Develop some simulated fault training devices.

Existing simulated fault training devices are usually designed for one type of fault, and can only simulate lighting fault or power fault separately.

The inventors found that the existing simulated fault training device has the problem that few faults can be simulated and cannot comprehensively simulate lighting faults and power faults, resulting in poor training effect.

Utility model content

The utility model aims to provide a low-voltage comprehensive fault simulation device, which can solve the problem that the existing simulated fault training device has few faults that can be simulated, and cannot simulate lighting faults and power faults comprehensively, resulting in poor training effect.

In an embodiment of the present utility model, a low-voltage comprehensive fault simulation device is provided, including: a simulated fault cabinet for simulating lighting faults and power faults, and a power supply box for starting and stopping power supplies and switching voltages, wherein, The simulated fault cabinet is electrically connected with the power box.

In this embodiment, by using the simulated fault cabinet to simulate lighting faults and power faults, and using the same power box to supply power to them, the integrated fault simulation device can comprehensively simulate lighting faults and power faults with fewer components required , thereby overcoming the problem that the existing simulated fault training device has fewer faults that can be simulated, and cannot comprehensively simulate lighting faults and power faults, thereby achieving a better training effect.

Preferably, the simulated fault cabinet includes: a lighting circuit for simulating a lighting fault and a power circuit for simulating a power fault, wherein the lighting circuit and the power circuit are respectively electrically connected to the power supply box through a switch.

Preferably, an indicator light, an ammeter, a voltmeter and a voltage changeover switch are arranged directly above the analog fault cabinet, wherein the ammeter is connected in series in the circuit for monitoring the current of the power supply; the voltmeter is connected in parallel in the circuit for Monitor the voltage of the power supply; the voltage switching switch is used to switch the power supply voltage of the simulated fault cabinet; the indicator light is used to indicate the working status of the power supply.

Preferably, the lighting circuit adopts a three-phase four-wire system, and each phase is equipped with a switch, a fuse, an incandescent lamp, an energy-saving lamp, and a fluorescent lamp, wherein the incandescent lamp, the energy-saving lamp, and the fluorescent lamp are connected in parallel and connected in series with the switch and the fuse.

Preferably, the power circuit adopts the forward and reverse wiring of the electric motor.

Preferably, the power circuit adopts motor Y/Δ start wiring.

Preferably, the power circuit includes a switch, a fuse, a contactor, a thermal relay, a button, a motor and a terminal connected in series.

Preferably, the power supply box is equipped with a power switch, a voltage switch, a voltmeter and an indicator light, wherein the voltmeter is connected in parallel to the circuit of the power supply box for monitoring the voltage of the power supply; the voltage switch is electrically connected to the power supply In the circuit of the power box, it is used to switch the supply voltage of the power supply; the indicator light is electrically connected to the circuit of the power box, and is used to indicate the working state of the power supply.

In the above-mentioned embodiment, by using the simulated fault cabinet to simulate the lighting fault and the power fault, and using the same power supply box to supply power to it, the integrated fault simulation device can comprehensively simulate the lighting fault and the power fault with fewer components required , so as to overcome the problem that the existing simulated fault training device has fewer faults that can be simulated, and cannot comprehensively simulate lighting faults and power faults. At the same time, by configuring related components in the lighting circuit and power circuit, various power distribution Fault setting and search, and then achieve a better training effect.

Description of drawings

The drawings described here are used to provide a further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 shows a block diagram of a low-voltage comprehensive analog fault device according to an embodiment of the present invention;

Fig. 2 shows a circuit diagram of a low-voltage comprehensive analog fault device according to an embodiment of the present invention,

Fig. 3 shows a circuit diagram of the motor Y/Δ start-up and lighting loop of the low-voltage comprehensive fault simulation device according to an embodiment of the present invention.

Detailed ways

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Figure 1 shows a low-voltage comprehensive fault simulation device according to an embodiment of the present invention, including: a fault cabinet for simulating power distribution faults and a power supply box for starting and stopping power supplies and voltage switching, wherein the fault simulation The cabinet 10 is electrically connected to the power box 20 .

In this embodiment, by using the simulated fault cabinet to simulate lighting faults and power faults, and using the same power box to supply power to them, the integrated fault simulation device can comprehensively simulate lighting faults and power faults with fewer components required , thereby overcoming the problem that the existing simulated fault training device has fewer faults that can be simulated, and cannot comprehensively simulate lighting faults and power faults, thereby achieving a better training effect.

Preferably, the simulated fault cabinet includes: a lighting circuit for simulating a lighting fault and a power circuit for simulating a power fault, wherein the lighting circuit and the power circuit are respectively electrically connected to the power supply box through a switch. It can realize the setting and searching of lighting circuit faults and power circuit faults.

Preferably, an indicator light, an ammeter, a voltmeter and a voltage changeover switch are arranged directly above the analog fault cabinet, wherein the ammeter is connected in series in the circuit for monitoring the current of the power supply; the voltmeter is connected in parallel in the circuit for Monitor the voltage of the power supply; the voltage switching switch is used to switch the power supply voltage of the simulated fault cabinet; the indicator light is used to indicate the working status of the power supply. By looking at the ammeter, voltmeter, and indicator lights, it is easier to find power failures.

Preferably, the lighting circuit adopts a three-phase four-wire system, and each phase is equipped with a switch, a fuse, an incandescent lamp, an energy-saving lamp, and a fluorescent lamp, wherein the incandescent lamp, the energy-saving lamp, and the fluorescent lamp are connected in parallel and connected in series with the switch and the fuse. Through the components configured in the lighting circuit, various faults of the lighting circuit in the actual power distribution operation can be simulated to realize the setting and finding of faults in the three-phase four-wire power circuit and the low-voltage lighting circuit.

Preferably, the power circuit adopts the forward and reverse wiring of the motor, which is used to realize the setting and finding of the forward and reverse wiring faults of the AC motor.

Preferably, the power circuit adopts the motor Y/Δ start wiring, which is used to realize the setting and finding of the AC motor Y/Δ start fault.

Preferably, the power circuit includes a switch, a fuse, a contactor, a thermal relay, a button, a motor and a terminal connected in series. It is used to simulate various faults of the power circuit in the actual power distribution operation, so as to realize the setting and finding of faults in the low-voltage power circuit and the motor terminal box.

Preferably, the power supply box is equipped with a power switch, a voltage switch, a voltmeter and an indicator light, wherein the voltmeter is connected in parallel to the circuit of the power supply box for monitoring the voltage of the power supply; the voltage switch is electrically connected to the power supply In the circuit of the power box, it is used to switch the supply voltage of the power supply; the indicator light is electrically connected to the circuit of the power box, and is used to indicate the working state of the power supply. By checking the ammeter, voltmeter and indicator lights, you can easily find the power failure and realize effective monitoring of the power supply.

Fig. 2 shows a circuit diagram of a low-voltage comprehensive analog fault device according to an embodiment of the present invention, including: a power circuit and a lighting circuit; both the power circuit and the lighting circuit are connected to the power supply in the power supply box through the main power circuit breaker ZQF; wherein, The circuit of the low-voltage comprehensive analog fault device in this embodiment is equipped with: fuse FU, used for short-circuit and overload protection; contactor KM, used for connecting and disconnecting equipment, and has a voltage loss protection function; thermal relay FR, It is used for long-term running heat and overload protection; the transfer switch SA is used to switch the voltage, and in this embodiment, it is mainly used to configure the corresponding voltage according to the different voltage requirements of the power circuit and the lighting circuit; the main power circuit breaker ZQF is used for connecting On and off the circuit, and has short-circuit, overload and leakage protection functions; shunt circuit breaker QF, used to make and break the circuit, and has short-circuit, overload and leakage protection functions; isolation knife switch QS, used to isolate power supply ; Button SB, control circuit; Motor M; convert electrical energy into mechanical energy, which is used in the simulation of power failure in this embodiment.

Fig. 3 shows a circuit diagram of the motor Y/Δ start-up and lighting loop of the low-voltage comprehensive fault simulation device according to an embodiment of the present invention. Among them, U1/V1/W1 represent the three terminals with the same name of the motor winding, and are respectively connected to the U1/V1/W1 terminal of the terminal; U2/V2/W2 represent the other three terminals of the motor winding with the same name, and are connected to The U2/V2/W2 terminal of the terminal is connected; the motor is started by Y/Δ through the opening and closing of the contactors KM1, KM2 and KM3.

The test test of the low-voltage comprehensive simulation fault device according to an embodiment of the present invention is as follows:

1. Test environment and configuration:

Test environment voltage: AC 380 volts 220 volts

Test environment temperature: 16 degrees Celsius

Test ambient humidity: 40% ambient humidity

2. Test method:

Using the black box test method, since the fault finding cabinet is composed of various independent components, each independent component is tested for withstand voltage and operation before leaving the factory. Therefore, the independent component test is not carried out on the fault finding cabinet, and only the overall withstand voltage test and simulated fault test are carried out on the fault finding cabinet.

3. Test results, Table 1 shows the test results of the low-voltage comprehensive fault simulation device according to an embodiment of the present invention.

Table 1

Test and test items method of use Test and test results Carry out the overall withstand voltage test on the fault finding cabinet body Apply 1000V to the cabinet and ground for 1 minute ＞＝5000Ω test qualified 1. Cover the L1 phase of the switch in the power box with adhesive tape. 2. The contact of the starter of the fluorescent lamp in the lighting circuit is not real. (loose) 3. The power circuit button is virtual connected. Artificial setting failure Fault display is correct 1. The FU phase fuse in the power box is broken (L2 phase) 2. The lighting circuit L1 phase is broken and two bulbs are broken. 3. The thermal relay of the power circuit is not in solid contact. Artificial setting failure Fault display is correct 1. One phase indicator light in the power box is off. 2. The lamp port of an incandescent bulb in phase L3 of the lighting circuit is in poor contact. 3. The auxiliary contact of the power circuit contactor is wrongly connected. Artificial setting failure Fault display is correct 1. The neutral line N line in the power box is broken. 2. The fuse of the fluorescent lamp in the lighting circuit is broken. 3. The wiring in the junction box of the power circuit motor is wrong. Artificial setting failure Fault display is correct 1. The wiring of the transfer switch in the power box is wrong. 2. The neutral line of the lighting circuit branch is broken. 3. The main circuit of the power circuit is wrongly connected. Artificial setting failure Fault display is correct 1. The fuses FU and L1 in the power box are broken. 2. The starter of the lighting circuit lamp tube is broken. 3. The power circuit switch is in bad contact. Artificial setting failure Fault display is correct

From the above description, it can be seen that the above-mentioned embodiments of the utility model have achieved the following technical effects: the comprehensive simulation of power faults and lighting faults has been realized; Problems and the ability to solve problems, thus ensuring the safety of the distribution network and the safety of operators in actual operation.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (8)

1. a low-voltage comprehensive simulated failure device is characterized in that, comprising: be used to simulate the simulated failure cabinet of light failure and power failure and the power supply box of the switching of start and stop that are used for power supply and voltage, wherein

Described simulated failure cabinet is electrically connected with described power supply box.

2. low-voltage comprehensive simulated failure device according to claim 1 is characterized in that, described simulated failure cabinet comprises: the power loop that is used to simulate the lighting loop of light failure and is used to simulate power failure, wherein

Described lighting loop is electrically connected with described power supply box respectively by switch with described power loop.

3. low-voltage comprehensive simulated failure device according to claim 1 is characterized in that, is provided with pilot lamp, reometer, voltage table and voltage changeover switch directly over the described simulated failure cabinet, wherein

Reometer is series in the circuit, is used to monitor the size of current of power supply;

Voltage table is parallel in the circuit, is used to monitor the power source voltage size;

Voltage changeover switch is used to switch the supply voltage of described simulated failure cabinet;

Pilot lamp is used to indicate the duty of power supply.

4. low-voltage comprehensive simulated failure device according to claim 2 is characterized in that, described lighting loop adopts three-phase four-wire system, and whenever matching is equipped with switch, fuse, incandescent lamp, electricity-saving lamp and daylight lamp, wherein

Connect with described switch and described fuse after described incandescent lamp, described electricity-saving lamp and the described daylight lamp parallel connection.

5. low-voltage comprehensive simulated failure device according to claim 2 is characterized in that, described power loop adopts motor rotating wiring.

6. low-voltage comprehensive simulated failure device according to claim 2 is characterized in that, described power loop adopts motor Y/ Δ to start wiring.

7. according to claim 5 or 6 described low-voltage comprehensive simulated failure devices, it is characterized in that described power loop comprises switch, fuse, contactor, electrothermal relay, button, motor and the connection terminal that is cascaded.

8. low-voltage comprehensive simulated failure device according to claim 1 is characterized in that, disposes power switch, voltage changeover switch, voltage table and pilot lamp in the described power supply box, wherein

Voltage table is parallel in the circuit of described power supply box, is used to monitor the power source voltage size;

Voltage changeover switch is electrically connected in the circuit of described power supply box, is used for the supply voltage of Switching power;

Pilot lamp is electrically connected in the circuit of described power supply box, is used to indicate the duty of power supply.

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