CN204992762U - PLC -based DC power supply monitoring system - Google Patents
PLC -based DC power supply monitoring system Download PDFInfo
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- CN204992762U CN204992762U CN201520226335.5U CN201520226335U CN204992762U CN 204992762 U CN204992762 U CN 204992762U CN 201520226335 U CN201520226335 U CN 201520226335U CN 204992762 U CN204992762 U CN 204992762U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
Abstract
The utility model discloses a PLC -based DC power supply monitoring system, including PLC, voltage sampling board, magnitude of current sampling board, high frequency rectifier module and touch -sensitive screen. The utility model discloses an use siemens s7 -200, make full use of s7 -200plc's various intelligent functions, realized intelligent management, abundant man -machine interface. Can issue rectifier module with the controlled quantity by the watch -dog is direct, reduce middle regulation conversion link, can accomplish the real time monitoring to rectifier module quicker, accurate, reliably. This watch -dog function is strong, the reliability is high, the maintenance volume less, convenient operation, simultaneously can be conveniently insert the integrated automation system through the communication, can provide safe for electric power integrated automation system, stablize, reliable DC power supply, have apparent social economic benefit.
Description
Technical field
The utility model relates to a kind of Direct Current Power Supervise Control System, specifically a kind of Direct Current Power Supervise Control System based on PLC.
Background technology
At present, electric power Direct Current Power Supervise Control System is the urban public power transformation of China and power supply, industrial and mining enterprises, skyscraper, being widely used in distribution of residence district.But general electric power Direct Current Power Supervise Control System, is only applicable to the monitoring of DC power supply in integrated power supply and AC power, cannot meets the needs of other power supplys in integrated power supply.Former supervisory control system great majority adopt electric parameter transmitter to add analogue collection module to measure, because its transmitter quantity is more, so wiring is complicated, debug difficulties, because its line transmission is analog signal, easily be interfered, therefore be generally only applied in less electric power DC power system.
In summary, obviously there is inconvenience and defect in the supervisory control system of existing electric supply equipment in actual use, more cannot meet the needs of integrated power supply and intelligent grid development, so must update.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, human-computer interaction hommization, be applicable to the Direct Current Power Supervise Control System based on PLC of integration, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of Direct Current Power Supervise Control System based on PLC, comprise PLC, voltage sampling plate, magnitude of current sampling plate, high-frequency rectification module and touch-screen, described PLC is connection signal input module respectively, signal output module, voltage sampling plate, magnitude of current sampling plate, touch-screen, host computer and high-frequency rectification module, high-frequency rectification module also connects alternating current input respectively, closing bus bar, voltage dropping silicon and storage battery, voltage dropping silicon output connection control bus, described voltage sampling plate input connects voltage input module, described magnitude of current sampling plate input connects current input module.
As further program of the utility model: the signal of described signal input module input comprises the input of warning amount, On-off signal and the input of fuse signal.
As further program of the utility model: described output signal module comprises fault alarm and exports and trip protection output.
As further program of the utility model: described voltage input module comprises AC-input voltage, VD, the female voltage of conjunction and battery tension.
As further program of the utility model: described current input module comprises output current, control mother current, closes mother current and charging current.
As the utility model further scheme: described PLC type number is siemens PLC.
Compared with prior art, the beneficial effects of the utility model are: the utility model, by using Siemens s7-200, takes full advantage of the various intelligent functions of s7-200PLC, achieves intelligentized management, abundant man-machine interface.Directly controlled quentity controlled variable can be issued to rectification module by watch-dog, decrease intermediate regulations conversion links, more fast, precisely, reliably can complete the real-time monitoring to rectification module.This monitor functions is strong, reliability is high, maintenance is few, easy to operate, complex automatic system can be accessed conveniently by communication simultaneously, can be Comprehensive Automatic System for Substation and safety, stable, reliable DC power supply are provided, have significant economic results in society.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the Direct Current Power Supervise Control System based on PLC;
Fig. 2 is the main program flow chart of the Direct Current Power Supervise Control System based on PLC.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 2, in the utility model embodiment, a kind of Direct Current Power Supervise Control System based on PLC, comprise PLC, voltage sampling plate, magnitude of current sampling plate, high-frequency rectification module and touch-screen, PLC is connection signal input module respectively, signal output module, voltage sampling plate, magnitude of current sampling plate, touch-screen, host computer and high-frequency rectification module, high-frequency rectification module also connects alternating current input respectively, closing bus bar, voltage dropping silicon and storage battery, voltage dropping silicon output connection control bus, voltage sampling plate input connects voltage input module, magnitude of current sampling plate input connects current input module.
The signal of signal input module input comprises the input of warning amount, On-off signal and the input of fuse signal.
Output signal module comprises fault alarm and exports and trip protection output.
Voltage input module comprises AC-input voltage, VD, the female voltage of conjunction and battery tension.
Current input module comprises output current, control mother current, closes mother current and charging current.
PLC type number is siemens PLC.
Operation principle of the present utility model is: system Alternating Current Power Supply adopts two-way three-phase three-wire system mode to realize the automatic switchover of standby usage power supply, power to intelligent high frequency rectification module through AC electricity distribution input unit, intelligent high frequency rectification module press watch-dog control mode export needed for direct voltage for closing bus bar, control bus, charge in batteries.Watch-dog is by intakes such as the input of plc each On-off signal channel acquisition each module warning amount, the input of each feeder switch amount, the inputs of each fuse signal; By analog quantity sampling plate by module acquires AC-input voltage, VD, the female voltage of conjunction, battery tension, output current, control mother current, close the simulation such as mother current, charging current and be converted into 0-5vdc voltage or the 4-20ma magnitude of current by em-235 module 12 a/d channel sample; By the process of program internal data, according to the controlling curve of program setting, proportion of utilization integral calculus control algolithm, produce regulated quantity, produce 0-10vdc voltage by em-235 analog output mouth in PLC, control output current, the voltage of high-frequency rectification module, realize closed-loop control.
The various operational factor of watch-dog collection site, alarming information of transmitting messages during the system failure; Protection act during systematic failures, protection charging device and cell safety.Touch-screen is the man-machine interface part of whole watch-dog, by rs485 and PLC communication, the various information of display direct current system, as system dc voltage, current parameters, system status information, fault message, system set-up parameters etc., and system parameters can be set, control the running status of watch-dog, by rs485 communication interface and upper machine communication, to realize " four is distant " function.
Main program is in circular flow state all the time, wherein the initialization of the main completion system of initialize routine, sets the initial parameter values etc. such as each register, counter, PLC mode of operation, timer interruption, communication modes.Then constantly call analog acquisition and process subprogram and Real-time Collection is carried out to system data; Call the operational mode that charging procedure operational mode subprogram determines watch-dog; Call fault alarm and the failure judgement warning of protection subprogram and protection relay to export; Call clock process subprogram to add up various running time charge in batteries program; Call alternating current interruption subroutine to ensure that system is had no progeny in interchange and automatically recover; Call silicon chain switching subprogram, according to the controlling voltage definite value of Operation system setting, automatic switching control is carried out to silicon chain; Call communication subprogram (interrupt mode) to realize and upper machine communication.
Claims (6)
1. the Direct Current Power Supervise Control System based on PLC, comprise PLC, voltage sampling plate, magnitude of current sampling plate, high-frequency rectification module and touch-screen, it is characterized in that, described PLC is connection signal input module respectively, signal output module, voltage sampling plate, magnitude of current sampling plate, touch-screen, host computer and high-frequency rectification module, high-frequency rectification module also connects alternating current input respectively, closing bus bar, voltage dropping silicon and storage battery, voltage dropping silicon output connection control bus, described voltage sampling plate input connects voltage input module, described magnitude of current sampling plate input connects current input module.
2. the Direct Current Power Supervise Control System based on PLC according to claim 1, is characterized in that, the signal of described signal input module input comprises the input of warning amount, On-off signal and the input of fuse signal.
3. the Direct Current Power Supervise Control System based on PLC according to claim 1, is characterized in that, described output signal module comprises fault alarm and exports and trip protection output.
4. the Direct Current Power Supervise Control System based on PLC according to claim 1, is characterized in that, described voltage input module comprises AC-input voltage, VD, the female voltage of conjunction and battery tension.
5. the Direct Current Power Supervise Control System based on PLC according to claim 1, is characterized in that, described current input module comprises output current, control mother current, closes mother current and charging current.
6. the Direct Current Power Supervise Control System based on PLC according to claim 1, is characterized in that, described PLC type number is siemens PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520226335.5U CN204992762U (en) | 2015-04-15 | 2015-04-15 | PLC -based DC power supply monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520226335.5U CN204992762U (en) | 2015-04-15 | 2015-04-15 | PLC -based DC power supply monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN204992762U true CN204992762U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520226335.5U Expired - Fee Related CN204992762U (en) | 2015-04-15 | 2015-04-15 | PLC -based DC power supply monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687579A (en) * | 2018-12-13 | 2019-04-26 | 九江赛晶科技股份有限公司 | A kind of fairing isolated network recovery electrolytic aluminium load control system |
-
2015
- 2015-04-15 CN CN201520226335.5U patent/CN204992762U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687579A (en) * | 2018-12-13 | 2019-04-26 | 九江赛晶科技股份有限公司 | A kind of fairing isolated network recovery electrolytic aluminium load control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20160415 |