CN213520731U - Intelligent power distribution cabinet control system - Google Patents

Abstract

The utility model relates to an intelligent power distribution cabinet control system. The intelligent power distribution cabinet control system comprises a switch control module, a main control module and an upper computer, wherein the switch control module comprises a first terminal row, a second terminal row, a starting button, a stopping button, a fuse and an alternating current contactor; the main control module comprises an STC89C52RC single-chip microcomputer control chip, a first relay control circuit and a second relay control circuit, the STC89C52RC single-chip microcomputer control chip is in data transmission with an upper computer through an RS485 bus, and the first relay control circuit and the second relay control circuit respectively comprise an intermediate relay, a triode, a first diode, a second diode and a resistor; the two ends of the normally open contact of the intermediate relay in the first relay control circuit are connected in parallel with the two ends of the opening button, and the two ends of the normally closed contact of the intermediate relay in the second relay control circuit are connected in series with the stop button. The application provides an intelligent power distribution cabinet control system includes RS485 bus and host computer, can realize that remote control, security are higher.

Description

Intelligent power distribution cabinet control system

Technical Field

The utility model relates to a switch board technical field especially relates to an intelligent power distribution cabinet control system.

Background

The rated current of the low-voltage power distribution cabinet is 50Hz, and the power distribution system with the rated voltage of 380V is used for power, illumination and power conversion and control of power distribution. The device has the characteristics of strong breaking capacity, good dynamic and thermal stability, flexible electric scheme, convenient combination, strong seriousness and practicability, novel structure and the like. However, the conventional low voltage distribution cabinet is controlled in a field manner, and due to the diversification of field environments, a lot of inconvenience and danger are brought to field operators.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an intelligent power distribution cabinet control system that ability remote control, security are higher.

For realizing the purpose of the utility model, the utility model adopts the following technical scheme:

an intelligent power distribution cabinet control system is applied to a low-voltage power distribution cabinet and comprises a switch control module, a main control module and an upper computer, wherein the switch control module comprises a first terminal row, a second terminal row, an opening button, a stopping button, a fuse and an alternating current contactor, the first terminal row is used for being connected with an external alternating current power supply, the second terminal row is used for being connected with electric equipment, three UVW (ultraviolet) wiring ends in the first terminal row are respectively connected with three VUV (vacuum insulated switchgear) wiring ends in the second terminal row through a normally-open main contact point of the fuse and the alternating current contactor in sequence, an N wiring end in the first terminal row is connected with one end of the fuse on a W wiring through a coil of the alternating current contactor, the opening button and the stopping button in sequence, and a normally-open auxiliary contact of the alternating current contactor is;

the master control module comprises an STC89C52RC single-chip microcomputer control chip, a first relay control circuit and a second relay control circuit, the STC89C52RC single-chip microcomputer control chip is in data transmission with the upper computer through an RS485 bus, the first relay control circuit and the second relay control circuit respectively comprise an intermediate relay, a triode, a first diode, a second diode and a resistor, the cathode of the first diode is connected with the base electrode of the triode through the resistor, the collector electrode of the triode is respectively connected with one end of an intermediate relay coil and the anode of the second diode, the other end of the intermediate relay coil and the cathode of the second diode are connected with a VCC power supply end, and the emitter electrode of the triode is grounded;

the positive electrode of a first diode in the first relay control circuit is connected with the first output end of the STC89C52RC singlechip control chip, and two ends of the normally open contact of the intermediate relay in the first relay control circuit are connected in parallel with two ends of the opening button; and the anode of a first diode in the second relay control circuit is connected with the second output end of the STC89C52RC singlechip control chip, and two ends of the normally closed contact of the intermediate relay in the second relay control circuit are connected with the stop button in series.

Compare in the power distribution cabinet system that traditional adoption field mode controlled, the intelligent power distribution cabinet control system that this application provided includes RS485 bus and host computer, can realize operating personnel's remote control, and the security is higher.

Drawings

Fig. 1 is a schematic structural diagram of a control system of an intelligent power distribution cabinet in an embodiment;

FIG. 2 is a schematic circuit diagram of a switch control module in the control system of the intelligent power distribution cabinet in FIG. 1;

fig. 3 is a schematic circuit diagram of a main control module in the control system of the intelligent power distribution cabinet in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically limited otherwise.

Referring to fig. 1 to 3, the present embodiment provides an intelligent power distribution cabinet control system, which is applied to a low voltage power distribution cabinet, and includes a switch control module 100, a main control module 200, and an upper computer 300, where the switch control module 100 includes a first terminal row M1, a second terminal row M2, a start button SB2, and a stop button SB1, fuse FU and ac contactor KM, first terminal row M1 is used for connecing external AC power supply, second terminal row M2 is used for connecing consumer, three terminals of UVW in first terminal row M1 loop through fuse FU, ac contactor's normally open main contact KM11 corresponds and links to each other with three terminals of VUW in the second terminal row respectively, N terminal in first terminal row M1 loops through ac contactor's coil KM1, open button SB2, stop button SB1 links to each other with one end of the fuse on the W wiring, ac contactor's normally open auxiliary contact KM12 and open button SB2 are parallelly connected.

The main control module comprises an STC89C52RC single-chip microcomputer control chip, a first relay control circuit and a second relay control circuit, the STC89C52RC single-chip microcomputer control chip is in data transmission with the upper computer 300 through an RS485 bus 400, the first relay control circuit and the second relay control circuit respectively comprise an intermediate relay, a triode, a first diode, a second diode and a resistor, the negative electrode of the first diode is connected with the base electrode of the triode through the resistor, the collector electrode of the triode is respectively connected with one end of an intermediate relay coil and the positive electrode of the second diode, the other end of the intermediate relay coil and the negative electrode of the second diode are connected with a power supply end, and the emitter electrode of the triode is grounded. Specifically, the first relay control circuit includes an intermediate relay K1, a transistor Q1, a first diode D1, a diode D2, and a resistor R1; the first relay control circuit includes an intermediate relay K2, a transistor Q2, a first diode D3, a second diode D4, and a resistor R2.

The positive electrode of a first diode D1 in the first relay control circuit is connected with a first output end (P1.0) of the STC89C52RC singlechip control chip, and two ends of an intermediate relay normally open contact K11 in the first relay control circuit are connected in parallel with two ends of an opening button SB 2; the anode of a first diode D3 in the second relay control circuit is connected with a second output end (P1.1) of the STC89C52RC singlechip control chip, and two ends of an intermediate relay normally open contact K21 in the second relay control circuit are connected with a stop button SB1 in series.

In this embodiment, the RS485 bus 400 is used to implement remote data communication between the STC89C52RC single-chip microcomputer control chip and the upper computer 300, an operator can send an instruction through the upper computer 300, and send the instruction to the STC89C52RC single-chip microcomputer control chip remotely through the RS485 bus 400, and the STC89C52RC single-chip microcomputer control chip receives the instruction and then controls the on or off of the electric device.

Specifically, the working principle of controlling the on or off of the electric equipment by the STC89C52RC single chip microcomputer control chip is as follows:

when an operator wants to start the electric equipment, the upper computer 300 can be operated to send a starting instruction to the STC89C52RC single-chip microcomputer control chip, after the STC89C52RC single-chip microcomputer control chip receives the starting instruction, a high level is sent to a P1.0 port of the STC89C52 single-chip microcomputer control chip, a triode Q1 in the first relay control circuit is conducted, a coil of an intermediate relay K1 is electrified, a normally open contact K11 of the intermediate relay is closed, two ends of the normally open contact K11 of the intermediate relay are connected with a starting button SB2 in parallel, and when the normally open contact K11 is closed, a coil KM1 of the alternating current contactor is electrified, so that a normally open auxiliary contact KM12 of the alternating current; and meanwhile, the normally open main contact KMII of the alternating current contactor is also closed, so that the second terminal row M2 is electrified, and the normal work of the electric equipment is finished.

When an operator wants to turn off the electric equipment, the upper computer 300 can be operated to send a turn-off instruction to the STC89C52RC single-chip microcomputer control chip, after the STC89C52RC single-chip microcomputer control chip receives the turn-off instruction, a high level is sent to the P1.1 port of the STC89C52 single-chip microcomputer control chip, a triode Q2 in the second relay control circuit is turned on, a coil of the intermediate relay K2 is electrified, a normally closed contact K21 of the intermediate relay is turned off, because two ends of the intermediate relay normally closed contact K21 are connected in series with the stop button SB1, when the normally closed contact K21 is turned off, the alternating current contactor coil KM1 is electrified, the normally open auxiliary contact KM12 and the normally open main contact KM11 of the alternating current contactor are both turned off, the second terminal row M2 is electrified.

Compare in the power distribution cabinet system that traditional adoption field mode controlled, the intelligent power distribution cabinet control system that this embodiment provided includes RS485 bus 400 and host computer 300, can realize operating personnel's remote control, and the security is higher.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (1)

1. An intelligent power distribution cabinet control system is applied to a low-voltage power distribution cabinet and is characterized by comprising a switch control module, a main control module and an upper computer, the switch control module comprises a first terminal row, a second terminal row, a start button, a stop button, a fuse and an alternating current contactor, the first terminal row is used for connecting an external alternating current power supply, the second terminal row is used for connecting electric equipment, the three UVW terminals in the first terminal row are respectively connected with the three VUV terminals in the second terminal row through the fuse and the normally-open main contact of the alternating current contactor in sequence, the N wiring ends in the first terminal row are connected with one end of the fuse on the W wiring sequentially through the coil of the alternating current contactor, the opening button and the stopping button, and a normally-open auxiliary contact of the alternating current contactor is connected with the opening button in parallel;

the master control module comprises an STC89C52RC single-chip microcomputer control chip, a first relay control circuit and a second relay control circuit, the STC89C52RC single-chip microcomputer control chip is in data transmission with the upper computer through an RS485 bus, the first relay control circuit and the second relay control circuit respectively comprise an intermediate relay, a triode, a first diode, a second diode and a resistor, the cathode of the first diode is connected with the base electrode of the triode through the resistor, the collector electrode of the triode is respectively connected with one end of an intermediate relay coil and the anode of the second diode, the other end of the intermediate relay coil and the cathode of the second diode are connected with a VCC power supply end, and the emitter electrode of the triode is grounded;

the positive electrode of a first diode in the first relay control circuit is connected with the first output end of the STC89C52RC singlechip control chip, and two ends of the normally open contact of the intermediate relay in the first relay control circuit are connected in parallel with two ends of the opening button; and the anode of a first diode in the second relay control circuit is connected with the second output end of the STC89C52RC singlechip control chip, and two ends of the normally closed contact of the intermediate relay in the second relay control circuit are connected with the stop button in series.

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