CN202363966U - Automatic switching device for emergency power supply - Google Patents

Automatic switching device for emergency power supply Download PDF

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Publication number
CN202363966U
CN202363966U CN2011205009926U CN201120500992U CN202363966U CN 202363966 U CN202363966 U CN 202363966U CN 2011205009926 U CN2011205009926 U CN 2011205009926U CN 201120500992 U CN201120500992 U CN 201120500992U CN 202363966 U CN202363966 U CN 202363966U
Authority
CN
China
Prior art keywords
circuit module
power supply
voltage sampling
logic control
control circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011205009926U
Other languages
Chinese (zh)
Inventor
涂汝汉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG XINDY ELECTRIC INDUSTRY Co Ltd
Original Assignee
GUANGDONG XINDY ELECTRIC INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGDONG XINDY ELECTRIC INDUSTRY Co Ltd filed Critical GUANGDONG XINDY ELECTRIC INDUSTRY Co Ltd
Priority to CN2011205009926U priority Critical patent/CN202363966U/en
Application granted granted Critical
Publication of CN202363966U publication Critical patent/CN202363966U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Abstract

The utility model discloses an automatic switching device for an emergency power supply. The automatic switching device is characterized by mainly comprising a master power supply voltage sampling and amplifying circuit module, an emergency power supply voltage sampling and amplifying circuit module, a logic control circuit module and a power supply switching switch, wherein the master power supply voltage sampling and amplifying circuit module and the emergency power supply voltage sampling and amplifying circuit module transmit voltage sampling information to the logic control circuit module, and the logic control circuit module carries out circuit switching control on the power supply switching switch. The automatic switching device for the emergency power supply adopts the above design mode, so the work is reliable and safe without joggling and heating phenomena, and the delay time of a delay alarm signal output module can be freely set, and therefore, the setting is convenient, the precision is high and the action switching speed is fast. Furthermore, the automatic switching device disclosed by the utility model is wide in application range, and convenient to maintain and can perform remote communication and operation state monitoring.

Description

The stand-by power supply automatic switching device
Technical field
The utility model relates to a kind of power transfer device, the used stand-by power supply automatic switching device that main power source and stand-by power supply input are automaticallyed switch in especially a kind of transformer station.
Background technology
Automatic throw-in equipment of emergency power supply is equipped with in the 0.4kV side with low-voltage cabinet in the station usually in transformer station, and two stations become can be subsequent use each other.
Utilize circuit of auxiliary relay and contactor overlap joint to realize the scheme that duplicate supply switches in early days; Show a lot of problems in the use; A maximum shortcoming is that the power supply detection is not comprehensive, because the auxiliary relay coil has only two terminals, wiring howsoever; Can only detect one or two and whether go up dead electricity mutually; In any case the voltage on the 3rd phase line all be detect less than, if broken string has appearred in this phase line that does not connect auxiliary relay of power supply commonly used, have only two to have mutually in the three phase mains; Be a kind of serious power failure, can not when this fault appears in power supply commonly used, switch to stand-by power supply with the duplicate supply handover scheme of relay overlap joint control circuit and get on; In addition, if undue higher of voltage can not switch with the duplicate supply switching mode that relay control circuit is realized; And this fault is to take place, if broken such as working zero line, and load is uneven; Just possible outlet phase voltage is higher especially; Certain phase voltage situation on the low side again simultaneously, this power failure can cause a large amount of power consumption equipments to damage, and when this power failure occurring; Auxiliary relay can not move, and contactor can not automatically switch on the stand-by power supply yet.This easy duplicate supply switching mode all can not be switched in the situation of multiple power failure; Just (power supply three-phase commonly used cuts off the power supply simultaneously in specific power failure situation; Or the phase line that connects auxiliary relay is cut off the power supply) could switch down, so this duplicate supply switching way is insecure.Country has released in the national standard " GB/T14048.11-2002 " of ATSE in October, 2002; Offering some clarification on ATSE switch to stand-by power supply when must be in any phase voltage of power supply commonly used unusual and get on; So, be not satisfy requirement in the national standard that duplicate supply switches with the duplicate supply handover scheme of auxiliary relay and contactor overlap joint.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model purpose is to provide a kind of stable work in work, safe and reliable stand-by power supply automatic switching device.
To achieve these goals, the technical scheme of the utility model employing is:
The stand-by power supply automatic switching device; It is characterized in that; It mainly contains main power voltage sampling amplifying circuit module, backup power source voltage sampling amplifying circuit module, logic control circuit module and power change-over switch and constitutes; Said main power voltage sampling amplifying circuit module and backup power source voltage sampling amplifying circuit module send voltage sample information to the logic control circuit module, and the logic control circuit module is carried out the circuit switching controls to power change-over switch.
Said logic control circuit module also is connected with the status monitor circuit module, in order to monitor power change-over switch and service entrance switch location status, device action, plant failure alarm, busbar voltage abnormality alarming, to stand with power supply disappearance alarm.
Said logic control circuit module also is connected with delayed alarm signal output module and telecommunication module.
Said delayed alarm signal output module is electrically connected with a delay adjustments switch.
The beneficial effect of the utility model: because the stand-by power supply automatic switching device adopts above-mentioned design form, so reliable operation safety does not only have shake and the phenomenon of generating heat; And can set arbitrarily the delay time of delayed alarm signal output module, it is convenient to set, and precision is high, and the action switch speed is fast; That the utility model also has is applied widely, telecommunication, monitoring running state, the characteristics that maintain easily.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further to specify.
Fig. 1 is the electric theory diagram of the utility model.
Among the figure: 1, main power voltage sampling amplifying circuit module; 2, backup power source voltage sampling amplifying circuit module; 3, logic control circuit module; 4, power change-over switch; 5, status monitor circuit module; 6, delayed alarm signal output module; 7, delay adjustments switch; 8, telecommunication module.
Embodiment
As shown in Figure 1; The stand-by power supply automatic switching device; It mainly contains main power voltage sampling amplifying circuit module 1, backup power source voltage sampling amplifying circuit module 2, logic control circuit module 3 and power change-over switch 4 and constitutes; Said main power voltage sampling amplifying circuit module 1 and backup power source voltage sampling amplifying circuit module 2 send voltage sample information to logic control circuit module 3, and 3 pairs of power change-over switchs of logic control circuit module 4 carry out the circuit switching controls.Logic control circuit module 3 also is connected with status monitor circuit module 5, in order to monitor power change-over switch and service entrance switch location status, device action, plant failure alarm, busbar voltage abnormality alarming, to stand with power supply disappearance alarm.Logic control circuit module 3 also is connected with delayed alarm signal output module 6 and telecommunication module 8, and delayed alarm signal output module 6 is electrically connected with a delay adjustments switch 7.Telecommunication module 8 has the RS485 communication interface, and supports multiple kinds such as MODBUS.
In addition, the utility model also has electric parameter monitoring, record and Presentation Function, adopts the intelligent object of AC sampling.Can monitor electric parameters such as three-phase voltage, three-phase current, active power, reactive power, frequency, power factor, electric degree; Logout alarm event record, device action logout, the Time And Event type that ability accurate recording incident takes place.And provide two above extreme values numerical value and the time interocclusal record (in history with the extreme value that took place this month), for accident analysis and prediction provide scientific basis.
Aspect defencive function, the service entrance switch of being selected for use adopts the automatic air-break switch highly reliable, that breaking capacity is big, when faults such as device inside is short-circuited, can reliably excise fault.Adopt automatic air-break switch at inlet wire, when key elements such as ATS need overhaul, can carry out safely, do not influence the operate as normal of another section bus power supply fully.Also can pass through the ATS selector switch, switch placed " manually " position, make things convenient for the maintainer that control section is keeped in repair.
Operation principle: original main power voltage sampling amplifying circuit module and the backup power source voltage voltage signal that the amplifying circuit module collects of sampling; Deliver to the logic control circuit module and compare, such two signals can be set with a voltage configuration switch.As wherein a certain phase operation voltage surpasses set point, with regard to output pulse signal through amplifying rear drive; Dividing the drive signal of amplifying two the tunnel, the one tunnel power change-over switch carried out the circuit switching controls, delays time in another driving time unit, road, initiating signal unit when time-delay stops, and the exportable remote motion signal of signal element supplies automation to use.

Claims (4)

1. stand-by power supply automatic switching device; It is characterized in that; It mainly contains main power voltage sampling amplifying circuit module, backup power source voltage sampling amplifying circuit module, logic control circuit module and power change-over switch and constitutes; Said main power voltage sampling amplifying circuit module and backup power source voltage sampling amplifying circuit module send voltage sample information to the logic control circuit module, and the logic control circuit module is carried out the circuit switching controls to power change-over switch.
2. stand-by power supply automatic switching device according to claim 1; It is characterized in that: said logic control circuit module also is connected with the status monitor circuit module, in order to monitor power change-over switch and service entrance switch location status, device action, plant failure alarm, busbar voltage abnormality alarming, to stand with power supply disappearance alarm.
3. stand-by power supply automatic switching device according to claim 1 is characterized in that: said logic control circuit module also is connected with delayed alarm signal output module and telecommunication module.
4. stand-by power supply automatic switching device according to claim 3 is characterized in that: said delayed alarm signal output module is electrically connected with a delay adjustments switch.
CN2011205009926U 2011-12-06 2011-12-06 Automatic switching device for emergency power supply Expired - Fee Related CN202363966U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205009926U CN202363966U (en) 2011-12-06 2011-12-06 Automatic switching device for emergency power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205009926U CN202363966U (en) 2011-12-06 2011-12-06 Automatic switching device for emergency power supply

Publications (1)

Publication Number Publication Date
CN202363966U true CN202363966U (en) 2012-08-01

Family

ID=46575122

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205009926U Expired - Fee Related CN202363966U (en) 2011-12-06 2011-12-06 Automatic switching device for emergency power supply

Country Status (1)

Country Link
CN (1) CN202363966U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683470A (en) * 2012-09-17 2014-03-26 全汉企业股份有限公司 Power supply apparatus with power backup mechanism
CN104882956A (en) * 2014-02-28 2015-09-02 北京谊安医疗系统股份有限公司 Multi-power switching circuit and anaesthesia machine with multi-power switching circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683470A (en) * 2012-09-17 2014-03-26 全汉企业股份有限公司 Power supply apparatus with power backup mechanism
CN104882956A (en) * 2014-02-28 2015-09-02 北京谊安医疗系统股份有限公司 Multi-power switching circuit and anaesthesia machine with multi-power switching circuit
CN104882956B (en) * 2014-02-28 2018-11-13 北京谊安医疗系统股份有限公司 More power supply switch circuits and Anesthesia machine with it

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120801

Termination date: 20151206

EXPY Termination of patent right or utility model