CN211016144U

CN211016144U - Low-voltage power distribution intelligent simulation device

Info

Publication number: CN211016144U
Application number: CN202020039386.8U
Authority: CN
Inventors: 李桂兰; 张保军
Original assignee: Yizheng Industrial Co ltd
Current assignee: Yizheng Industrial Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-07-14
Anticipated expiration: 2030-01-09

Abstract

The utility model relates to a low voltage distribution intelligent simulation device. The intelligent electric leakage protection device comprises a PC (personal computer), a mains supply, an electric leakage protector, an isolation disconnecting link, a universal circuit breaker, a measuring instrument indicating loop, a three-phase measuring loop, a single-phase measuring and illuminating loop, a reactive compensation control loop, a three-phase power dragging loop and a fault simulation control device, wherein the mains supply is sequentially connected with the electric leakage protector, the isolation disconnecting link, the universal circuit breaker and a main power supply loop, the measuring instrument indicating loop is connected with the output end of the universal circuit breaker, the three-phase measuring loop, the single-phase measuring and illuminating loop, the reactive compensation control loop and the three-phase power dragging loop are connected with the main power supply loop, the three-phase measuring loop, the single-phase measuring and illuminating loop are connected onto the fault simulation control device, and the PC. The utility model has the characteristics of it is intelligent, modularization, close the scene, the trouble sets up conveniently, and training scene is pressed close to the installation overall arrangement.

Description

Low-voltage power distribution intelligent simulation device

Technical Field

The utility model belongs to the technical field of the technique of circuit emulation and specifically relates to a low pressure distribution intelligence emulation device is related to.

Background

On the training and practical training projects related to the low-voltage distribution device, many foreign manufacturers widely adopt new technologies and computer software, fault setting, databases, calculation analysis, installation and wiring and the like are organically combined, the advancement and reliability of the device are greatly accelerated, and the labor intensity of technicians and teachers is reduced.

The practical training device related to low-voltage power distribution is mainly carried out in a teacher theory teaching mode according to research at home and abroad and for the practical training of low-voltage power distribution related projects, and the power distribution form and the fault phenomenon can be rarely observed on the actual site. It is unlikely that rural power distribution business workers and other electric power professionals would want to practice and do it regularly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low pressure distribution intelligence emulation device, it has intellectuality, modularization, is close the scene, and the trouble sets up conveniently, and training site's characteristics are pressed close to the installation overall arrangement.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a low pressure distribution intelligence emulation device, including the PC, mains supply, earth-leakage protector, the isolation switch, universal circuit breaker, measuring instrument indicating circuit, three-phase metering circuit, single-phase measurement and illumination return circuit, reactive compensation control circuit, three-phase power drags return circuit and fault simulation controlling means, mains supply in proper order with earth-leakage protector, the isolation switch, universal circuit breaker and main power supply return circuit are connected, measuring instrument indicating circuit connects the output at universal circuit breaker, three-phase metering circuit, single-phase measurement and illumination return circuit, reactive compensation control circuit and three-phase power drag return circuit all are connected with main power supply return circuit, three-phase metering circuit and single-phase measurement and illumination return circuit are connected on fault simulation controlling means, the PC passes through the ethernet with fault simulation controlling means and is connected.

Preferably, the indicating circuit of the measuring instrument comprises a voltage indicating circuit and a current indicating circuit, the voltage indicating circuit comprises a fuse FU2, a universal changeover switch QC1 and a voltmeter PV1, the fuse FU2 is connected to the output end of the universal circuit breaker QF1, and the output end of the fuse FU2, the universal changeover switch QC1 and the voltmeter PV1 are connected in sequence; the current indicating circuit comprises current transformers TAa-TAC and ammeters PA1-PA3, wherein the current transformers TAa-TAC and the ammeters PA1-PA3 are correspondingly connected; meanwhile, a fault simulation interface of the fault simulation control device is connected in series into the circuit.

Preferably, the reactive compensation control loop comprises a reactive compensation controller JKWF, circuit breakers QF4, QF7-QF9, an intelligent load zero-crossing detection compound switch FK1-FK3, an insurance FU8-FU10, a compensation switching indicator light loop H L9-H L11 and capacitors C1-C3, a plurality of fault points are further arranged in the circuit, and fault simulation interfaces of the fault simulation control device are connected into the circuit in series.

Preferably, the single-phase metering and lighting circuit comprises a single-phase electric meter PJ1, a knife switch QK1, a safety FU3 and indicator lights E L1 and E L2, wherein the input end of the single-phase electric meter PJ1 is connected with the output end of the universal circuit breaker QF1, and the output end of the single-phase electric meter PJ1, the knife switch QK1, the safety FU3 and the indicator lights E L1 and E L2 are sequentially connected.

Preferably, still include overload electric leakage detecting element and serial ports screen, overload electric leakage detecting element and serial ports screen all are connected with fault simulation controlling means.

To sum up, the utility model discloses a beneficial technological effect does:

the device can simulate the faults of the indicating loop, the reactive compensation control loop and the single-phase metering and lighting loop of the measuring instrument, displays data on the serial port screen for practical training personnel to analyze, and controls the power supply loop to cut off the power supply and protect the operation safety of the system when the circuit is overloaded or the equipment leaks electricity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of a front panel structure inside a cabinet;

FIG. 3 is a schematic diagram of a cabinet interior rear panel configuration;

FIG. 4 is a system schematic of the present invention;

fig. 5 is a system circuit diagram of the present invention;

FIG. 6 is an enlarged partial schematic view of portion A of FIG. 5;

FIG. 7 is an enlarged partial view of portion B of FIG. 5;

FIG. 8 is an enlarged partial schematic view of portion C of FIG. 5;

FIG. 9 is an enlarged partial schematic view of portion D of FIG. 5;

fig. 10 is a partially enlarged schematic view of a portion E in fig. 5.

In the figure, 1, a cabinet; 11. an indicating instrument; 12. a serial port screen; 13. a disconnecting link starting key; 14. the disconnecting link stops pressing; 15. a reactive compensation controller; 16. an electric drive control button; 2. controlling a disconnecting link; 21. a metering transformer; 22. a measuring transformer; 23. a reactive compensation operation switching circuit; 24. a motor control operation loop; 25. a motor protection loop; 3. a fault simulation intelligent control box; 31. a single phase lighting circuit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-3, for the utility model discloses a low voltage distribution intelligence emulation device, including rack 1, rack 1's preceding panel is installed indicating instrument 11, serial ports screen 12, switch and is started button 13 and switch and stops button 14, the start-stop of being convenient for observation device state and controlling means stops. The front lower panel of the cabinet 1 is provided with a reactive compensation controller 15 and an electric drive control key 16, so that reactive compensation control operation and control of forward and reverse rotation and star-delta conversion of a motor are realized. The front part inside the cabinet 1 is provided with a control disconnecting link 2, a metering mutual inductor 21, a measuring mutual inductor 22, a reactive compensation operation switching circuit 23, a motor control operation loop 24 and a motor protection loop 25. A fault simulation intelligent control box 3 and a single-phase lighting circuit 31 are arranged at the rear part of the interior of the cabinet 1.

Referring to fig. 4, from the system, the utility model discloses mainly include PC, main power supply circuit, measuring instrument indicating loop, three-phase measurement return circuit, single-phase measurement and illumination return circuit, reactive compensation control circuit, three-phase power drag return circuit, serial ports screen 12, fault simulation controlling means and overload electric leakage detecting element. The commercial power supply provides working power supply for the main power supply loop through the leakage protector, the isolation disconnecting link and the universal circuit breaker, and simultaneously provides power supply for the measuring instrument indicating loop, the three-phase measuring loop, the single-phase measuring and illuminating loop, the reactive compensation control loop and the three-phase power dragging loop. The PC machine carries out data interaction with the fault simulation control device through the Ethernet, thereby setting faults in a main loop or a control loop, carrying out practical training exercise, in addition, the fault simulation control device is connected with the overload electric leakage detection unit and the serial port screen 12, when the circuit operation is overloaded or the equipment is in electric leakage, the fault simulation control device controls the power supply loop to cut off the power supply, the operation and the operation of the protection system are safe, and meanwhile, the fault state is transmitted to the PC machine and the serial port screen 12, and the fault position and the content are prompted. The three-phase metering loop and the single-phase metering and lighting loop are connected with the fault simulation control device through RS-485 interfaces, so that the measured data are displayed on the serial port screen 12.

The three-phase metering circuit comprises a three-phase four-wire PJ and a three-phase four-wire mutual inductor PJ-TA, one end of a three-phase electric meter J is connected with the output end of a corresponding power supply circuit, the other end of the three-phase electric meter J is connected with a fault detection circuit, a fault detection circuit is connected with a fault detection circuit, a power supply circuit comprises a mains supply power supply, an isolation knife switch QS, a universal breaker QF and a leakage protector QF, the components are sequentially connected among the main supply circuit, the measurement instrument indicating circuit comprises a voltage indicating circuit and a current indicating circuit, the voltage indicating circuit comprises a safety FU, a universal transfer switch QC and a voltmeter PV, the safety FU is connected with the output end of the universal breaker QF, the output end of the safety FU, the universal transfer switch QC and the voltmeter PV, the voltmeter PV provides voltage for the whole voltage indicating circuit, the current indicating circuit comprises a current TAa TAA-PA-TAC-PA, a current transformer and a PA-PA, a current TAA, a TAC, a TAA, a current transformer, a PAD, a PA-PA, a PAD-PA, a PAD.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a low voltage distribution intelligent simulation device which characterized in that: the intelligent electric leakage protection device comprises a PC (personal computer), a mains supply, an electric leakage protector, an isolation switch, a universal circuit breaker, a measuring instrument indicating loop, a three-phase measuring loop, a single-phase measuring and illuminating loop, a reactive compensation control loop, a three-phase power dragging loop and a fault simulation control device, wherein the mains supply is sequentially connected with the electric leakage protector, the isolation switch, the universal circuit breaker and a main power supply loop, the measuring instrument indicating loop is connected with the output end of the universal circuit breaker, the three-phase measuring loop, the single-phase measuring and illuminating loop, the reactive compensation control loop and the three-phase power dragging loop are connected with the main power supply loop, the three-phase measuring loop and the single-phase measuring and illuminating loop are connected onto the fault simulation control device, and the PC is.

2. The intelligent simulation device for low-voltage power distribution according to claim 1, wherein: the measuring instrument indicating loop comprises a voltage indicating circuit and a current indicating circuit, the voltage indicating circuit comprises a fuse FU2, a universal changeover switch QC1 and a voltmeter PV1, the fuse FU2 is connected to the output end of the universal circuit breaker QF1, and the output end of the fuse FU2, the universal changeover switch QC1 and the voltmeter PV1 are sequentially connected; the current indicating circuit comprises current transformers TAa-TAC and ammeters PA1-PA3, wherein the current transformers TAa-TAC and the ammeters PA1-PA3 are correspondingly connected; meanwhile, a fault simulation interface of the fault simulation control device is connected in series into the circuit.

3. The intelligent simulation device for low-voltage power distribution according to claim 1, wherein the reactive compensation control loop comprises a reactive compensation controller JKWF, a breaker QF4, a QF7-QF9, an intelligent load zero-crossing detection compound switch FK1-FK3, an insurance FU8-FU10, a compensation switching indicator lamp loop H L9-H L11 and a capacitor C1-C3, a plurality of fault points are further arranged in the circuit, and a fault simulation interface of the fault simulation control device is connected into the circuit in series.

4. The intelligent simulation device for low-voltage power distribution according to claim 3, wherein the single-phase metering and lighting circuit comprises a single-phase electric meter PJ1, a knife switch QK1, a safety FU3 and indicator lamps E L1 and E L2, the input end of the single-phase electric meter PJ1 is connected to the output end of the universal circuit breaker QF1, and the output end of the single-phase electric meter PJ1, the knife switch QK1, the safety FU3 and the indicator lamps E L1 and E L2 are connected in sequence.

5. The intelligent simulation device for low-voltage power distribution according to claim 1, wherein: the device is characterized by further comprising an overload electric leakage detection unit and a serial port screen (12), wherein the overload electric leakage detection unit and the serial port screen (12) are both connected with a fault simulation control device.