CN202172266U - Intelligent power distribution safety control system - Google Patents

Abstract

The utility model discloses an intelligent power distribution safety control system which can give out a warning in advance about the place at which overheating hidden danger occurs of a switch, and thoroughly eliminate the fire accident caused by personal negligence, routing inspection behind time and the like. The safety control system consists of temperature sensors, a temperature acquisition unit, an input reservoir, a data processor, a central processing unit, a graph and text display processing unit, a touch screen, a communication processor, an Ethernet, a short message unit, a control output unit, a trip controller and an air circuit breaker, wherein signals output by the temperature sensors arranged at metal contacts of the air circuit breaker arranged in a power distribution cabinet are acquired by the temperature acquisition unit, processed by the input reservoir, the data processor and a comparator and then are sent to the graph and text display processing unit, the touch screen and the communication processor respectively by the central processing unit, display and operation control is carried out to parameters, overheat warning information is sent out through the Ethernet and the short message unit, and the control output unit carries out tripping and outage on the air circuit breaker of which the contact is overheated.

Description

A kind of intelligent power distribution safety control system

Technical field

The utility model relates to low-voltage distribution cabinet distribution control technology field, particularly a kind of intelligent power distribution safety control system.

Background technology

Along with living standards of the people improve, the industry high speed development, power consumption is more and more, and it is increasing to load, and how safer electricity consumption becomes question of common concern.For the air circuit switch in the power distribution cabinet; Along with air circuit constantly increases, agingly can slowly take place service time, the excess load phenomenon can occur also the time; All thus factors; Can cause the switch contact contact resistance to heighten, loose contact is and overheated, and caused thus fire cases is not within minority.How to avoid the air circuit switch because of overheated breaking out of fire, also become the emphasis of concern.Overheated detection to the air circuit switch of distribution system in the past only is to use the infrared radiation thermometer regular visit, is difficult to find early and handles the overheated hidden danger of switch quickly and effectively.

Summary of the invention

The purpose of the utility model is to provide a kind of intelligent power distribution safety control system; It can early warning inform where overheated hidden danger appears in switch; Prevented the generation of power distribution cabinet fire effectively; Utterly destroyed because of human negligence, patrolled and examined fire incident untimely and that catastrophic failure causes, improved its electrical safety greatly.

Technical solution proposed by the invention is such:

A kind of intelligent power distribution safety control system comprises the main circuit air circuit and a plurality of parallel circuit air circuits of tool of several low-voltage distribution cabinets, is equipped with temperature sensor at the place, wiring metal contact of said each air circuit, and this control system also comprises:

Temperature collecting cell: through each temperature sensor temperature signal collection is carried out in the wiring metal contact of each air circuit, a plurality of temperature collecting cells adopt CANBUS bus or RS485 bus to be connected with the input holder;

The input holder: the temperature signal that temperature collecting cell collects outputs to the input holder and posts storage after the A/D analog-to-digital conversion;

Data processor and comparator: carry out the pre-set threshold value analysis relatively through data processor and comparator, output temperature data and warning information from the temperature data of input holder output;

Central processing unit: receive from the temperature data and the warning information of data processor output, and temperature data is outputed to the picture and text display processing unit, warning information is outputed to communication processor;

Picture and text display processing unit: the temperature data that receives is carried out parameter values demonstration, graphical display;

The LCD touch-screen: the data that receive the output of picture and text display processing unit are carried out numerical value demonstration, graphical display; Through the current temperature of LCD screen displaying and the temperature alarming value of setting; And current temperature generation temperature trend curve chart, the temperature parameter pre-set threshold value is carried out threshold value setting through the LCD touch-screen;

Communication processor: receive from the warning information of central processing unit output, send a warning message to administrative staff, also can pass through Ethernet transmission data and warning information to long-distance management system through the note unit;

Control output unit: receive the instruction of sending, to the outage of threading off of the air circuit of Current Temperatures superelevation from central processing unit.

Compared with prior art, the utlity model has following beneficial effect:

(1) the intelligent power distribution safety control system of the utility model can the current temperature value of the wiring metal contact of a plurality of main circuit air circuits in the five station power distribution cabinets nearly and a plurality of parallel circuit air circuits thereof be detected, signals collecting, storage; Carry out the pre-set threshold value analysis relatively through data processor and comparator; Obtain one group of temperature data, warning information and temperature trend curve chart; After central processing unit and the processing of picture and text display processing unit; On touch-screen, show the temperature that seized air circuit position, seized wiring metal contact are current and temperature alarming value, temperature trend curve chart, the warning message time of origin of setting; And store 5000 warning information; This LCD touch-screen can also have the function that hidden danger is informed in early warning to administrator right, telecommunication network setting, short message setting except carrying out the threshold values input.

In addition, warning information sends a warning message to the related management personnel through the note unit after central processing unit input communication processor processes, simultaneously through the Ethernet long-distance management system that sends a warning message.It is thus clear that native system has four kinds of means to the transmission of warning information: 1. on-the-spot sound and light alarm; 2. LCD screen displaying; 3. note is informed; 4. report long-distance management system.This has demonstrated fully the early warning that native system had, has informed the power of hidden danger; Thereby; Can prevent the generation of power distribution cabinet fire effectively, utterly destroy because of human negligence, patrolled and examined fire incident untimely and that catastrophic failure causes, improve its electrical safety widely.

(2) native system also has the function of the full automatic action control of threading off by force.When the temperature of the wiring metal contact of seized air circuit exceeds on the preset first order threshold values in limited time; If administrative staff fail to reply the shunted exciter tripping control command; And the temperature of this contact is when continuing to be warming up to the second level threshold values upper limit (ultimate value) of setting; Data processor will send and automatically perform control command; Notice control output unit carries out shunted exciter tripping control to main circuit air circuit or its parallel circuit air circuit of contact temperature superelevation, and it is cut off the electricity supply, and the air circuit of informing this temperature superelevation of administrative staff deenergization.Guarantee can not take place because of the fire that seized air circuit over temperature and heat causes.

The utility model is mainly used in the low-voltage distribution cabinet, also is applicable to high voltage power distributing cabinet.

Description of drawings

Fig. 1 is the intelligent power distribution safety control system electricity theory diagram of an embodiment of the utility model.

Embodiment

Through following embodiment the utility model is done further to set forth in detail.

Referring to shown in Figure 1, a kind of intelligent power distribution safety control system is made up of one group of temperature sensor 1, temperature collecting cell 2, CANBUS bus 3, RS485 bus 4, input holder 5, comparator 6, data processor 7, LCD touch-screen 8, picture and text display processing unit 9, central processing unit 10, communication processor 11, Ethernet 12, note unit 13, control output unit 14, tripping controller 15, air circuit 16.One group of temperature sensor 1 obtains temperature signal near being arranged in the wiring metal contact of each seized main circuit air circuit 16 and parallel circuit air circuit 16 thereof; Temperature collecting cell 2 is gathered these temperature signals; Because native system can detect the air circuit of monitoring five station power distribution cabinets at most; So a plurality of temperature collecting cells 2 need be connected with input holder 5 through CANBUS bus 3 or RS485 bus 4, the temperature signal that each temperature collecting cell 2 is collected outputs to after the A/D analog-to-digital conversion to be imported holder 5 and posts storage.Carry out the pre-set threshold value analysis relatively from the temperature data of input holder 5 outputs through data processor 7 and comparator 6; Output temperature data and warning information; Temperature data is transported to picture and text display processing unit 9 through central processing unit 10, and warning information is transported to communication processor 11 through central processing unit 10.The picture and text display processing unit 9 that receives temperature data carries out parameter values demonstration, graphical display.LCD touch-screen 8 shows the current temperature and the temperature alarming value of setting; And generating the temperature trend curve chart to current temperature, the input of temperature parameter pre-set threshold value can be carried out threshold value setting through touch-screen 8, when temperature parameter exceeds the preset first order threshold values upper limit (for example 60 ° of C); Data processor 7 sends warning information; And store warning message for inquiry, be simultaneously displayed on the LCD touch-screen 8, and carry out acoustic scene light and report to the police.Meanwhile, warning information is sent to Communication processor 11 through central processing unit 10, through the note unit 13 related management personnel that send a warning message, through Ethernet 12 long-distance management system that sends a warning message.When administrative staff receive contact temperature superelevation warning information, can be through the order of network or message reply, through control output unit 14 and tripping controller 15 the outage of threading off of the air circuit 16 of current contact temperature superelevation.If administrative staff fail to reply the shunted exciter tripping control command; And seized air circuit 16 contact temperatures are when continuing to be warming up to the second level threshold values upper limit (for example 80 ° of C) of setting; Then data processor 7 automatically performs control command, and the seized air circuit 16 of 14 pairs of contact temperature superelevation of notice control output unit carries out shunted exciter tripping control, and it is cut off the electricity supply; And the air circuit 16 of informing this contact temperature superelevation of administrative staff deenergization, utterly destroy the hidden danger of fire.

Color touch is shielded 8 input units and is had: colored demonstration, curve chart demonstration, user right login interface, the setting of temperature threshold values, 5000 warning information inquiries, curve historical record inquiry in 30 days, note setting, telecommunication network setting, Chinese input function.

Tripping controller 15 can be a kind of trip gear that air circuit 16 carries, and also can be external mechanical action final controlling element.

Claims (1)

1. intelligent power distribution safety control system; The main circuit air circuit and a plurality of parallel circuit air circuit thereof that comprise several low-voltage distribution cabinets; Place, wiring metal contact at said each air circuit is equipped with temperature sensor, and it is characterized in that: this control system also comprises:

Temperature collecting cell: through each temperature sensor temperature signal collection is carried out in the wiring metal contact of each air circuit, a plurality of temperature collecting cells adopt CANBUS bus or RS485 bus to be connected with the input holder;

The input holder: the temperature signal that temperature collecting cell collects outputs to the input holder and posts storage after the A/D analog-to-digital conversion;

Data processor and comparator: carry out the pre-set threshold value analysis relatively through data processor and comparator, output temperature data and warning information from the temperature data of input holder output;

Central processing unit: receive from the temperature data and the warning information of data processor output, and temperature data is outputed to the picture and text display processing unit, warning information is outputed to communication processor;

Picture and text display processing unit: the temperature data that receives is carried out parameter values demonstration, graphical display;

The LCD touch-screen: the data that receive the output of picture and text display processing unit are carried out numerical value demonstration, graphical display; Through the current temperature of LCD screen displaying and the temperature alarming value of setting; And current temperature generation temperature trend curve chart, the temperature parameter pre-set threshold value is carried out threshold value setting through the LCD touch-screen;

Communication processor: receive from the warning information of central processing unit output, send a warning message to administrative staff, also can pass through Ethernet transmission data and warning information to long-distance management system through the note unit;

Control output unit: receive the instruction of sending, to the outage of threading off of the air circuit of Current Temperatures superelevation from central processing unit.

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