CN108075462A - A kind of overvoltage protective system - Google Patents
A kind of overvoltage protective system Download PDFInfo
- Publication number
- CN108075462A CN108075462A CN201710554378.XA CN201710554378A CN108075462A CN 108075462 A CN108075462 A CN 108075462A CN 201710554378 A CN201710554378 A CN 201710554378A CN 108075462 A CN108075462 A CN 108075462A
- Authority
- CN
- China
- Prior art keywords
- output
- microcomputer
- line
- vacuum contactor
- overvoltage
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of overvoltage protective systems; it includes a vacuum contactor K1, a znr and an overvoltage protection controller; the line input terminal of vacuum contactor K1 is connected with high voltage power supply; the line output terminal of vacuum contactor K1 and the line input terminal of znr connect; the line output terminal ground connection of znr; the line output terminal connection vacuum contactor K1 of overvoltage protection controller; line input terminal is connected with microcomputer, and microcomputer is connected with an output module, memory module and communication module；Memory module is for 20 fault messages occurred recently of storage；Communication module is used to the fault message of system with non effectively earth ed neutral being sent to monitoring center；Output module includes output driving circuit, protective relay and alarm relay, for receiving the signal of microcomputer output, and drives protective relay with alarm relay actuation by output driving circuit to connect protection and alarm circuit.
Description
Technical field
Present invention relates particularly to a kind of overvoltage protective systems.
Background technology
Current 3 ~ 35KW neutral point indirect earthings, the electricity of neutral by arc extinction coil grounding or neutral point through high resistance ground
In Force system, at present, usually cannot effectively avoid because system is alternate and phase ground between the accidents such as the overvoltage that triggers generation, this
A little overvoltage form certain threat to the service life of power system device and operational safety.
The content of the invention
For above-mentioned deficiency of the prior art, overvoltage protective system structure novel provided by the invention can believe failure
Breath is made a response automatically, and reacts quick, and practicability, security are relatively strong.
In order to reach foregoing invention purpose, the technical solution adopted by the present invention is：A kind of overvoltage protective system is provided, is wrapped
A vacuum contactor K1, a znr and an overvoltage protection controller are included, vacuum contactor K1's
Line input terminal is connected with high voltage power supply, and the line output terminal of vacuum contactor K1 and the line input terminal of znr connect
It connects, the line output terminal ground connection of znr, the line output terminal connection vacuum contactor K1 of overvoltage protection controller,
Line input terminal is connected with microcomputer, and microcomputer is connected with an output module, memory module and communication module；Remember mould
Block is not lost for storing 20 fault messages occurred recently after power down；Communication module is used for neutral non-effective grounding
The fault message of system is sent to monitoring center；Output module includes output driving circuit, protective relay and alarm relay,
For receiving the protection of microcomputer output and alarm signal, and protective relay and alarm are driven by output driving circuit
Relay is attracted to connect protection and alarm circuit.
Further, the upper end of microcomputer is provided with voltage transformer, the line input terminal and high pressure of voltage transformer
Power supply connects, and the line output terminal of voltage transformer is connected with microcomputer, the other end ground connection of voltage transformer, miniature calculating
The line output terminal control overvoltage protection controller of machine.
Beneficial effects of the present invention are：The overvoltage protective system is simple in structure, at low cost, highly practical；When there is electricity
During pressure load, microcomputer starts the control of overvoltage protection controller and starts vacuum contactor K1 so that overvoltage is aoxidizing
Consumed energy on zinc nonlinear resistance so that voltage returns to normal value；And microcomputer is while fault-signal is obtained,
Protective relay is quickly driven with alarm relay actuation by output driving circuit to connect protection and alarm circuit；Memory
Module is not lost for storing 20 fault messages occurred recently after power down；Communication module is used to connect neutral point is non-effective
The fault message of ground system is sent to monitoring center.
Description of the drawings
Fig. 1 is the structure diagram of overvoltage protective system.
Wherein：1st, znr；2nd, overvoltage protection controller；3rd, voltage transformer.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only an embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without creative efforts
Example is applied, belongs to protection scope of the present invention.
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with drawings and the specific embodiments, to this
Application is described in further detail.
In the following description, the reference of " one embodiment ", " embodiment ", " example ", " example " etc. is shown
The embodiment or example so described can include special characteristic, structure, characteristic, property, element or limit, but not each real
Applying example or example all necessarily includes special characteristic, structure, characteristic, property, element or limit.In addition, reuse phrase " according to
One embodiment of the application " is not necessarily referring to identical embodiment although it is possible to refer to identical embodiment.
According to one embodiment of the application, a kind of overvoltage protective system is given, as shown in Figure 1, the overvoltage protection system
System includes a vacuum contactor K1, a znr 1 and an overvoltage protection controller 2, vacuum contact
The line input terminal of device K1 is connected with high voltage power supply, and the line of the line output terminal and znr 1 of vacuum contactor K1 is defeated
Enter end connection, the line output terminal ground connection of znr 1, the line output terminal connection vacuum of overvoltage protection controller 2
Contactor K1, line input terminal are connected with microcomputer,
The microcomputer of the overvoltage protective system is connected with an output module, memory module and communication module；Memory module is used
In storing 20 fault messages occurred recently, do not lost after power down；Communication module is used for system with non effectively earth ed neutral
Fault message be sent to monitoring center；Output module includes output driving circuit, protective relay and alarm relay, is used for
Protection and the alarm signal of microcomputer output are received, and protective relay and alarm relay are driven by output driving circuit
Device is attracted to connect protection and alarm circuit.
According to one embodiment of the application, the upper end of microcomputer is provided with voltage transformer 3, voltage transformer 3
Line input terminal be connected with high voltage power supply, the line output terminal of voltage transformer 3 is connected with microcomputer, voltage transformer 3
The other end is grounded, the line output terminal control overvoltage protection controller 2 of microcomputer.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be made for those skilled in the art it will be apparent that as defined herein one
As principle can in other embodiments be realized in the case where not departing from the spirit or scope of invention.Therefore, the present invention will not
Meeting be limited and the embodiments shown herein, and is to fit to consistent with principles disclosed herein and novel features
Most wide scope.
Claims (2)
1. a kind of overvoltage protective system, it is characterised in that：Including a vacuum contactor K1, a znr and
One overvoltage protection controller, the line input terminal of the vacuum contactor K1 are connected with high voltage power supply, the vacuum contactor
The line output terminal of K1 is connected with the line input terminal of the znr, the line output of the znr
End ground connection, the line output terminal connection vacuum contactor K1 of the overvoltage protection controller, the line input terminal and miniature calculating
Machine connects, and the microcomputer is connected with an output module, memory module and communication module；The memory module is used to store
20 fault messages occurred recently, do not lose after power down；The communication module is used for system with non effectively earth ed neutral
Fault message is sent to monitoring center；The output module includes output driving circuit, protective relay and alarm relay, uses
In the protection and alarm signal that receive the microcomputer output, and protective relay and report are driven by output driving circuit
Alert relay is attracted to connect protection and alarm circuit.
2. overvoltage protective system according to claim 1, it is characterised in that：The upper end of the microcomputer is provided with electricity
Press mutual inductor, the line input terminal of the voltage transformer is connected with high voltage power supply, the line output terminal of the voltage transformer with it is micro-
Type computer connects, the other end ground connection of the voltage transformer, and the line output terminal control overvoltage of the microcomputer is protected
Protect controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554378.XA CN108075462A (en) | 2017-07-10 | 2017-07-10 | A kind of overvoltage protective system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554378.XA CN108075462A (en) | 2017-07-10 | 2017-07-10 | A kind of overvoltage protective system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108075462A true CN108075462A (en) | 2018-05-25 |
Family
ID=62159059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710554378.XA Pending CN108075462A (en) | 2017-07-10 | 2017-07-10 | A kind of overvoltage protective system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108075462A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202524078U (en) * | 2012-04-10 | 2012-11-07 | 安徽国科电力设备有限公司 | Arc suppression and overvoltage protection device controller |
| CN104052044A (en) * | 2014-05-30 | 2014-09-17 | 安徽三和电力技术有限公司 | Voltage collecting device of overvoltage suppression cabinet |
| CN106129995A (en) * | 2016-08-28 | 2016-11-16 | 安徽普天电力科技有限公司 | A kind of novel convenient practical arc-extinguishing harmonic-eliminating and overvoltage protection three-in-one unit |
| CN206135409U (en) * | 2016-08-28 | 2017-04-26 | 安徽普天电力科技有限公司 | Novel convenient practical arc extinction harmonic elimination and overvoltage protection three way device |
-
2017
- 2017-07-10 CN CN201710554378.XA patent/CN108075462A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202524078U (en) * | 2012-04-10 | 2012-11-07 | 安徽国科电力设备有限公司 | Arc suppression and overvoltage protection device controller |
| CN104052044A (en) * | 2014-05-30 | 2014-09-17 | 安徽三和电力技术有限公司 | Voltage collecting device of overvoltage suppression cabinet |
| CN106129995A (en) * | 2016-08-28 | 2016-11-16 | 安徽普天电力科技有限公司 | A kind of novel convenient practical arc-extinguishing harmonic-eliminating and overvoltage protection three-in-one unit |
| CN206135409U (en) * | 2016-08-28 | 2017-04-26 | 安徽普天电力科技有限公司 | Novel convenient practical arc extinction harmonic elimination and overvoltage protection three way device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180525 |
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| WD01 | Invention patent application deemed withdrawn after publication |