CN211016129U - Low-voltage cable fault simulation system - Google Patents
Low-voltage cable fault simulation system Download PDFInfo
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- CN211016129U CN211016129U CN201921785123.5U CN201921785123U CN211016129U CN 211016129 U CN211016129 U CN 211016129U CN 201921785123 U CN201921785123 U CN 201921785123U CN 211016129 U CN211016129 U CN 211016129U
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Abstract
The utility model discloses a low tension cable simulated fault system, including treater, battery management module, communication module, drive circuit, relay control circuit, the treater includes serial ports 0, serial ports 1, several IO mouth and signal acquisition mouth at least, and each relay is two accuse relays in the relay control circuit, and IO mouth is respectively through each relay controlled end in the drive circuit connection relay control circuit, and relay control circuit simulates open circuit, short circuit or ground fault circuit of low tension cable; the input end of the relay control circuit is respectively connected with the input end of the low-voltage cable, and the output end of the relay control circuit is respectively connected with the output end of the low-voltage cable; the signal acquisition port of the processor is respectively connected with the signal feedback ends of the relays; the processor is connected with the battery management module through a serial port 1, is connected with the communication module through a serial port 0, and receives a low-voltage cable simulation test instruction through the communication module. The utility model discloses the program of reducing low voltage cable simulation fault test has realized automatic control.
Description
Technical Field
The utility model relates to a grid fault simulation training field especially relates to a low tension cable simulation fault system.
Background
At present, the low-voltage cable fault treatment training adopts a low-voltage cable fault simulator, the existing low-voltage cable fault simulator adopts the on/off states of a plurality of switches of a combined switch to select fault types, but the simulated fault types are incomplete, the intelligent level is low, and the remote meter L end generally needs manual participation, so that the low-voltage cable testing process generally requires at least a plurality of people to cooperate with each other for operation, which is very inconvenient, and the training and learning efficiency of technical personnel can not be improved due to the influence of hardware conditions.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome above-mentioned prior art at least one kind defect (not enough), provide a low tension cable simulated fault system.
The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least.
In order to achieve the above technical effects, the technical solution of the present invention discloses the following contents:
a low-voltage cable simulation fault system comprises a processor, a battery management module, a communication module, a driving circuit and a relay control circuit, wherein the processor at least comprises a serial port 0, a serial port 1, a plurality of programmable I/O ports and a signal acquisition port, each relay in the relay control circuit is a duplex dual-control relay, the programmable I/O ports are respectively connected with the controlled end of each relay in the relay control circuit through the driving circuit so as to control the opening/closing of each relay, and the relay control circuit simulates an open circuit, a short circuit or a grounding simulation fault circuit of a A, B, C, N phase of a low-voltage cable through the opening/closing of each relay; the input end of the relay control circuit is respectively connected with the input ends of A, B, C, N phases of low-voltage cables, and the output end of the relay control circuit is respectively connected with the output ends of A, B, C, N phases of low-voltage cables; the signal acquisition port of the processor is respectively connected with the signal feedback end of each relay; the processor is connected with the battery management module through a serial port 1, is connected with the communication module through a serial port 0, and receives a low-voltage cable simulation test instruction through the communication module.
Preferably, the relay control circuit comprises a ground fault circuit, an open-circuit fault circuit and an interphase short-circuit fault circuit, the ground fault circuit comprises relays R4, R5, R01 and R13, the open-circuit fault circuit comprises relays R212, R311, R413 and R510, the interphase short-circuit fault circuit comprises relays R62, R714, R815, R916, R22 and R020, the relays are provided with a controlled end, a signal feedback end, an input end, a switch closing point, a switch normally closing point, a signal normally closing point and a signal access point, the signal access points of the relays are connected with a zero line, the input ends of R14 are respectively connected with the input ends of a phase input end and R212 of a low-voltage cable A, the input end of R35 is respectively connected with the input ends of a phase input end and R411 of the low-voltage cable B, the input end of R51 is respectively connected with the input ends of a phase C phase input end and R613 of the low-voltage cable, the input end of the low-voltage cable N phase input end and the input end of R810, the normal closing point of R912 is respectively connected with the input end of R115, the input end of the low-voltage cable B phase switch, the normal closing point of R613, the low-voltage cable B phase switch is respectively connected with the input end of the low-voltage cable B2, the normal closing point of the R613, the normal closing point of the low-voltage switch, the normal closing point of the low-voltage cable 2, the normal closing point of the low-voltage switch.
Preferably, the relay control circuit further comprises a test access circuit, the test access circuit comprises relays, namely R L9, R L8, R L6 and R L7, the relays are provided with a controlled end, a signal feedback end, an input end, a switch closing point, a switch normally closing point, a signal normally closing point and a signal access point, the signal access points of the relays are connected with a zero line, the switch closing point of the R L9 is connected with the input end of the phase A of the low-voltage cable, the switch closing point of the R L8 is connected with the input end of the phase B of the low-voltage cable, the switch closing point of the R L6 is connected with the input end of the phase C of the low-voltage cable, the switch closing point of the R L7 is connected with the input end of the phase N of the low-voltage cable, and the terminal of the megger circuit L selects the input end of the corresponding relay according to the test phase of.
Preferably, the number of the driving circuits is equal to the number of relays in the relay control circuit, and the driving circuits are connected with the controlled ends of the relays in a one-to-one correspondence manner.
Preferably, each of the driving circuits includes a resistor R1, a photocoupler U12, a resistor R2 and a diode D10, wherein the input terminals of the resistors R1 are respectively connected to a programmable I/O port for controlling the relay controlled end of the relay control circuit, the output terminals thereof are connected to the anode 1 pin of the photocoupler U12, the emitter 3 pin of the photocoupler and the resistor R2 are connected in series, the cathode 2 pin of the photocoupler is connected in parallel to the emitter 3 pin of the photocoupler and the resistor R2 which are connected in series, the collector 4 pin of the photocoupler is respectively connected to the input terminal of the diode D10 and one terminal of one of the relay coils in the relay control circuit, and the output terminal of the diode D10 is connected to the other terminal of one of the relay coils in the relay control circuit and to the positive terminal of the power supply.
Preferably, when the programmable I/O port of the processor sends a high level analog value, the emitter and the collector of the photocoupler U12 are turned on, the coil of the relay is energized to control the corresponding relay to be switched on, and otherwise, the corresponding relay is controlled to be switched off.
Preferably, the battery management module adopts an integrated module integrating mains supply charging, solar charging and battery discharging management to provide working electricity.
Preferably, the communication module comprises a bluetooth communication module and an FT232 serial port communication module, and the bluetooth communication module is in communication connection with the mobile terminal to receive a low-voltage cable simulation test instruction sent by the mobile terminal; the FT232 serial port communication module is in communication connection with the PC to receive a low-voltage cable simulation test instruction sent by the PC.
Preferably, the processor adopts a bus type single chip microcomputer.
Preferably, the simulation test application of the low-voltage cable comprises a grounding measurement of the low-voltage cable a to the ground, a grounding measurement of the low-voltage cable B to the ground, a grounding measurement of the low-voltage cable C to the ground, a grounding measurement of the low-voltage cable N to the ground, a short-circuit measurement of the low-voltage cable a to the phase B, a short-circuit measurement of the low-voltage cable a to the phase C, a short-circuit measurement of the low-voltage cable a to the phase N, a short-circuit measurement of the low-voltage cable B to the phase N, a short-circuit measurement of the low-voltage cable C to the phase N, an open-circuit measurement of the neutral line to the phase a, an open-circuit measurement of the neutral line to the phase B, an open-circuit measurement of the neutral line.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is: the utility model provides a plurality of control modes, or on-site manual control, or remote control for the simulation fault test of the low-voltage cable, and realizes the one-man operation of the low-voltage cable fault test, simplifying the working procedure; the utility model discloses a relay control circuit simulation low voltage cable A, B, C, N looks open a way, short circuit or ground connection simulation fault circuit, provide the setting of the simulation fault type of comparison global, improve the staff and cultivate learning efficiency, promoted the hardware facilities of low voltage cable simulation test environment.
Drawings
Fig. 1 is a schematic block diagram of an embodiment of a low-voltage cable fault simulation system according to the present invention.
Fig. 2 is a schematic diagram of a panel of an embodiment of the system of the present invention applied to a low-voltage cable fault simulation box.
Fig. 3 is the relay group wiring diagram of the system simulation low voltage cable a phase grounding fault of the utility model.
Fig. 4 is a relay assembly diagram of the system simulation low voltage cable B-phase open circuit fault.
Fig. 5 is the utility model discloses a system simulation low tension cable B is relative to the relay group wiring diagram that the short circuit of C looks was measured.
Fig. 6 is a schematic structural diagram of one of the driving circuits in the system of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
As shown in fig. 1-6, the utility model discloses a low tension cable simulated fault system, including treater, battery management module, communication module, drive circuit, relay control circuit, the treater includes serial ports 0 at least, serial ports 1, several programmable IO mouth and signal acquisition mouth, each relay is two accuse relays in the relay control circuit, programmable IO mouth is respectively through the controlled end of each relay in the drive circuit connection relay control circuit to the switching on/off of each relay of control, relay control circuit simulates out the open circuit of low tension cable A, B, C, N looks through the switching on/off of each relay, short circuit or ground connection simulated fault circuit; the input end of the relay control circuit is respectively connected with the input ends of A, B, C, N phases of low-voltage cables, and the output end of the relay control circuit is respectively connected with the output ends of A, B, C, N phases of low-voltage cables; the signal acquisition port of the processor is respectively connected with the signal feedback end of each relay; the processor is connected with the battery management module through a serial port 1, is connected with the communication module through a serial port 0, and receives a low-voltage cable simulation test instruction through the communication module.
In the embodiment of the utility model, the utility model discloses an in the treater carries out data interaction through communication module to the instruction of long-range receipt low tension cable simulation test. The processor compiles a level analog value for the programmable I/O port according to the received instruction, controls the opening/closing of each relay in the relay control circuit through the driving circuit, and simulates an open circuit, a short circuit or a grounding analog fault circuit of the low-voltage cable A, B, C, N phase through the opening/closing of each relay in the relay control circuit.
The utility model provides a plurality of control modes, or on-site manual control, or remote control for the simulation fault test of the low-voltage cable, and realizes the one-man operation of the low-voltage cable fault test, simplifying the working procedure; the utility model discloses a relay control circuit simulation low voltage cable A, B, C, N looks open a way, short circuit or ground connection simulation fault circuit, provide the setting of the simulation fault type of comparison global, improve the staff and cultivate learning efficiency, promoted the hardware facilities of low voltage cable simulation test environment.
Preferably, the relay control circuit comprises a ground fault circuit, an open-circuit fault circuit and an interphase short-circuit fault circuit, the ground fault circuit comprises relays R4, R5, R01 and R13, the open-circuit fault circuit comprises relays R212, R311, R413 and R510, the interphase short-circuit fault circuit comprises relays R62, R714, R815, R916, R22 and R020, the relays are provided with a controlled end, a signal feedback end, an input end, a switch closing point, a switch normally closing point, a signal normally closing point and a signal access point, the signal access points of the relays are connected with a zero line, the input ends of R14 are respectively connected with the input ends of a phase input end and R212 of a low-voltage cable A, the input end of R35 is respectively connected with the input ends of a phase input end and R411 of the low-voltage cable B, the input end of R51 is respectively connected with the input ends of a phase C phase input end and R613 of the low-voltage cable, the input end of the low-voltage cable N phase input end and the input end of R810, the normal closing point of R912 is respectively connected with the input end of R115, the input end of the low-voltage cable B phase switch, the normal closing point of R613, the low-voltage cable B phase switch is respectively connected with the input end of the low-voltage cable B2, the normal closing point of the R613, the normal closing point of the low-voltage switch, the normal closing point of the low-voltage cable 2, the normal closing point of the low-voltage switch.
In the embodiment of the present invention, the relays R L4, R L5, R L01, and R L13 of the ground fault circuit are controlled by the respective ports of the processors PA4, PA5, PA6, and PA7, the ports of the PC4, PC5, and PC5 are responsible for signal feedback, the ports of the open fault circuit are responsible for signal feedback, the ports of the phase-to-phase short fault circuit are responsible for signal feedback, the ports of the processors PF5, and PF5 are responsible for phase-to-phase short fault circuit are responsible for signal feedback, the relays R5, R3615, R5, and R5, the processors PB5, PF5, PE 72, PE 5, PF5, PF, a.
Preferably, the relay control circuit further comprises a test access circuit, the test access circuit comprises relays, namely R L9, R L8, R L6 and R L7, the relays are provided with a controlled end, a signal feedback end, an input end, a switch closing point, a switch normally closing point, a signal normally closing point and a signal access point, the signal access points of the relays are connected with a zero line, the switch closing point of the R L9 is connected with the input end of the phase A of the low-voltage cable, the switch closing point of the R L8 is connected with the input end of the phase B of the low-voltage cable, the switch closing point of the R L6 is connected with the input end of the phase C of the low-voltage cable, the switch closing point of the R L7 is connected with the input end of the phase N of the low-voltage cable, and the terminal of the megger circuit L selects the input end of the corresponding relay according to the test phase of.
In the embodiment of the utility model, the utility model discloses a test access circuit comprises R L to R L relay, the treater passes through PA0, PA1, PA2, PA3 port and carries out access control to R L to R L relay respectively, singlechip PC0, PC1, PC2, PC3 port are signal acquisition mouth, be responsible for the signal number feedback of R L to R L relay respectively.
The method includes that a line end L, a grounding end E and a shielding end G are provided, a L end is connected with an exposed conductor of a loop when the loop is measured for ground resistance, the E end is connected with a grounding wire or a metal shell, a cable input end is connected with a line end L when the insulation resistance of the loop is measured, a cable output end is connected with the grounding end E, the shielding layer of the cable is connected to the shielding end G when the insulation resistance of the cable is measured, the E end of the megger is generally directly grounded when the insulation resistance of the low-voltage cable A is measured for ground, the G end is connected to the shielding end of the cable, the megger is started, when the rotating speed reaches 120r/min, the A end of the cable is connected to a L end of the megger, and the rotating speed of the megger is kept unchanged when the megger is connected to the A end of the cable at L end, the rotating speed of the megger is kept unchanged after the test is finished, the rotating speed of the megger is firstly disconnected L end, then the megger is slowly reduced, the connecting wires of the megger and the G end are removed, then the megger is automatically connected to the cable L end or separated from the low-voltage cable, the signal acquisition management device, the closed-loop signal acquisition management device is responsible for.
Preferably, the number of the driving circuits is equal to the number of relays in the relay control circuit, and the driving circuits are connected with the controlled ends of the relays in a one-to-one correspondence manner.
Preferably, each of the driving circuits includes a resistor R1, a photocoupler U12, a resistor R2 and a diode D10, wherein the input terminals of the resistors R1 are respectively connected to a programmable I/O port for controlling the relay controlled end of the relay control circuit, the output terminals thereof are connected to the anode 1 pin of the photocoupler U12, the emitter 3 pin of the photocoupler and the resistor R2 are connected in series, the cathode 2 pin of the photocoupler is connected in parallel to the emitter 3 pin of the photocoupler and the resistor R2 which are connected in series, the collector 4 pin of the photocoupler is respectively connected to the input terminal of the diode D10 and one terminal of one of the relay coils in the relay control circuit, and the output terminal of the diode D10 is connected to the other terminal of one of the relay coils in the relay control circuit and to the positive terminal of the power supply.
Preferably, when the programmable I/O port of the processor sends a high level analog value, the emitter and the collector of the photocoupler U12 are turned on, the coil of the relay is energized to control the corresponding relay to be switched on, and otherwise, the corresponding relay is controlled to be switched off.
In the embodiment of the utility model, the I/O port of the processor sends out the level analog value, if outputting high level, the analog value can be 1, the photoelectric coupler U12 is switched on, the corresponding relay coil is switched on, and the relay is switched on; when a low level is input, the analog value can be 0, the photoelectric coupler U12 is disconnected, the corresponding relay coil is powered off, and the relay is switched off.
Preferably, the battery management module adopts an integrated module integrating mains supply charging, solar charging and battery discharging management to provide working electricity.
Preferably, the communication module comprises a bluetooth communication module and an FT232 serial port communication module, and the bluetooth communication module is in communication connection with the mobile terminal to receive a low-voltage cable simulation test instruction sent by the mobile terminal; the FT232 serial port communication module is in communication connection with the PC to receive a low-voltage cable simulation test instruction sent by the PC.
Preferably, the processor adopts a bus type single chip microcomputer.
Preferably, the simulation test application of the low-voltage cable comprises a grounding measurement of the low-voltage cable a to the ground, a grounding measurement of the low-voltage cable B to the ground, a grounding measurement of the low-voltage cable C to the ground, a grounding measurement of the low-voltage cable N to the ground, a short-circuit measurement of the low-voltage cable a to the phase B, a short-circuit measurement of the low-voltage cable a to the phase C, a short-circuit measurement of the low-voltage cable a to the phase N, a short-circuit measurement of the low-voltage cable B to the phase N, a short-circuit measurement of the low-voltage cable C to the phase N, an open-circuit measurement of the neutral line to the phase a, an open-circuit measurement of the neutral line to the phase B, an open-circuit measurement of the neutral line.
In the embodiment of the present invention, it should be understood that the application of the simulation test of the present invention has, but is not limited to, the measurement items in the following table one.
Watch 1
As shown in fig. 3, when a phase a of the low-voltage cable is simulated to be grounded, the processor sends a high-level analog value to the port PA4, the port PA4 controls the R L4 relay to be switched on, the phase a of the cable is directly grounded, the R L4 relay is switched on, and the signal acquisition end PC4 of the processor receives a low-level signal feedback, which indicates that the fault simulation is successful.
As shown in fig. 4, when the open-circuit fault of the B-phase of the low-voltage cable is simulated, the processor sends a high-level simulation value to the PB1 end, the PB1 controls the R L11 relay to be switched on, the middle of the B-phase of the cable is opened, and along with the switching-on of the R L11 relay, the signal acquisition end PF1 of the processor receives the feedback of the low-level signal, so that the simulation of the open-circuit fault of the B-phase of the low-voltage cable is successful.
As shown in fig. 5, in the case of simulating a cable phase-to-phase short-circuit fault, R L2 is a relay for simulating an a-phase and B-phase short-circuit fault, R L14 is for simulating an a-phase and C-phase short-circuit fault, R L15 is for simulating an a-phase and N-phase short-circuit fault, R L16 is for simulating a B-phase and C-phase short-circuit fault, R L22 is for simulating a B-phase and N-phase short-circuit fault, R L20 is for simulating a C-phase and N-phase short-circuit fault, taking the simulation of a B-phase and C-phase short-circuit fault as an example, a processor sends a high level to PB7, PB7 controls the R L16 relay to close, the cable B-phase and C-phase short-circuit, a signal acquisition port PF7 of the processor receives a low level signal feedback, and the simulation of a B-phase.
The same or similar reference numerals correspond to the same or similar parts;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The low-voltage cable simulation fault system is characterized by comprising a processor, a battery management module, a communication module, a driving circuit and a relay control circuit, wherein the processor at least comprises a serial port 0, a serial port 1, a plurality of programmable I/O ports and a signal acquisition port, each relay in the relay control circuit is a duplex dual-control relay, the programmable I/O ports are respectively connected with the controlled end of each relay in the relay control circuit through the driving circuit so as to control the opening/closing of each relay, and the relay control circuit simulates an open circuit, a short circuit or a grounding simulation fault circuit of a low-voltage cable A, B, C, N phase through the opening/closing of each relay; the input end of the relay control circuit is respectively connected with the input ends of A, B, C, N phases of low-voltage cables, and the output end of the relay control circuit is respectively connected with the output ends of A, B, C, N phases of low-voltage cables; the signal acquisition port of the processor is respectively connected with the signal feedback end of each relay; the processor is connected with the battery management module through a serial port 1, is connected with the communication module through a serial port 0, and receives a low-voltage cable simulation test instruction through the communication module.
2. The simulated fault system of claim 1, wherein the relay control circuit comprises a ground fault circuit, an open fault circuit and an interphase short-circuit fault circuit, the ground fault circuit comprises relays R4, R5, R01 and R13, the open fault circuit comprises relays R212, R311, R413 and R510, the interphase short-circuit fault circuit comprises relays R62, R714, R815, R916, R22 and R020, the relays are provided with a controlled end, a signal feedback end, an input end, a switch normally-off point, a signal normally-off point and a signal access point, the signal access points of the relays are connected with a low-voltage cable a-phase input end and an R212 input end, the R35 input end is connected with a low-voltage cable B-phase input end and an R411 input end, the R51 input end is connected with a low-voltage cable C-phase input end and an R613-phase input end, the R73 input end is connected with a low-voltage cable N-phase input end and R810, the R35 input end is connected with a low-voltage cable B-phase input end and an R613-voltage cable B-phase input end, the normal-switch input end is connected with a low-voltage cable B-phase input end, the normal-switch input end, the switch 522, the low-voltage cable B-normal-switch input end is connected with a low-voltage cable N-phase input end, the low-voltage cable B-normal-switch, the switch-normal switch input end is connected with the R2-normal switch, the low-normal switch-.
3. The system of claim 1, wherein the relay control circuit further comprises a test access circuit, the test access circuit comprises relays R L9, R L8, R L6 and R L7, the relays each have a controlled end, a signal feedback end, an input end, a switch closing point, a switch normally closing point, a signal normally closing point and a signal access point, the signal access points of the relays are all connected to a neutral line, the switch closing point of R L9 is connected to the input end of the phase a of the low voltage cable, the switch closing point of R L8 is connected to the input end of the phase B of the low voltage cable, the switch closing point of R L6 is connected to the input end of the phase C of the low voltage cable, the switch closing point of R L7 is connected to the input end of the phase N of the low voltage cable, and the terminal L of the watch line selects the corresponding relay to connect to the input end according to the test phase of the analog low voltage cable.
4. The low voltage cable simulated fault system of claim 1 wherein the number of said drive circuits is equal to the number of relays in the relay control circuit and is connected in one-to-one correspondence with the controlled terminals of each relay.
5. The system of claim 4, wherein each of the driving circuits includes a resistor R1, a photo coupler U12, a resistor R2, and a diode D10, wherein the input terminals of the resistors R1 are respectively connected to the programmable I/O port for controlling the relay controlled terminal of the relay control circuit, the output terminals thereof are connected to the anode 1 pin of the photo coupler U12, the emitter 3 pin of the photo coupler is connected in series with the resistor R2, the cathode 2 pin of the photo coupler is connected in parallel to the emitter 3 pin of the photo coupler and the resistor R2, the collector 4 pin of the photo coupler is respectively connected to the input terminal of the diode D10, one terminal of one of the relay coils in the relay control circuit, and the output terminal of the diode D10 is connected to the other terminal of one of the relay coils in the relay control circuit and to the positive terminal of the power supply.
6. The system of claim 5, wherein when the programmable I/O port of the processor outputs a high level analog value, the emitter and the collector of the optoelectronic coupler U12 are turned on, the coil of the relay is energized to control the corresponding relay to be switched on, and vice versa, the corresponding relay is controlled to be switched off.
7. The low-voltage cable simulated fault system of claim 1, wherein said battery management module employs an integrated module that integrates mains charging, solar charging, and battery discharge management to provide operational power.
8. The system for simulating fault of low-voltage cable according to claim 1, wherein the communication module comprises a bluetooth communication module and an FT232 serial port communication module, the bluetooth communication module is in communication connection with the mobile terminal to receive the low-voltage cable simulation test instruction sent by the mobile terminal; the FT232 serial port communication module is in communication connection with the PC to receive a low-voltage cable simulation test instruction sent by the PC.
9. The low voltage cable simulated fault system of claim 1 wherein said processor employs a bus-type single chip microcomputer.
10. The low-voltage cable simulated fault system according to any of claims 1 to 9, wherein the low-voltage cable simulated test application comprises a low-voltage cable a to ground grounding measurement, a low-voltage cable B to ground grounding measurement, a low-voltage cable C to ground grounding measurement, a low-voltage cable N to ground grounding measurement, a low-voltage cable a to B phase short circuit measurement, a low-voltage cable a to C phase short circuit measurement, a low-voltage cable a to N phase short circuit measurement, a low-voltage cable B to C phase short circuit measurement, a low-voltage cable B to N phase short circuit measurement, a low-voltage cable C to N phase short circuit measurement, a neutral pair a phase open circuit measurement, a neutral pair B phase open circuit measurement, a neutral pair C phase open circuit measurement, a neutral pair N phase open circuit measurement.
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|---|---|---|---|
| CN201921785123.5U CN211016129U (en) | 2019-10-22 | 2019-10-22 | Low-voltage cable fault simulation system |
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| CN201921785123.5U CN211016129U (en) | 2019-10-22 | 2019-10-22 | Low-voltage cable fault simulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816843A (en) * | 2021-01-20 | 2021-05-18 | 合肥科威尔电源系统股份有限公司 | IGBT static characteristic test circuit |
| CN113990160A (en) * | 2021-12-30 | 2022-01-28 | 国网江西省电力有限公司电力科学研究院 | Modular cable simulation and fault simulation system and method |
-
2019
- 2019-10-22 CN CN201921785123.5U patent/CN211016129U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816843A (en) * | 2021-01-20 | 2021-05-18 | 合肥科威尔电源系统股份有限公司 | IGBT static characteristic test circuit |
| CN113990160A (en) * | 2021-12-30 | 2022-01-28 | 国网江西省电力有限公司电力科学研究院 | Modular cable simulation and fault simulation system and method |
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