CN106207983A - A kind of selective protection system of MCCB moulded case circuit breaker - Google Patents
A kind of selective protection system of MCCB moulded case circuit breaker Download PDFInfo
- Publication number
- CN106207983A CN106207983A CN201610658370.3A CN201610658370A CN106207983A CN 106207983 A CN106207983 A CN 106207983A CN 201610658370 A CN201610658370 A CN 201610658370A CN 106207983 A CN106207983 A CN 106207983A
- Authority
- CN
- China
- Prior art keywords
- electrically connected
- voltage
- outfan
- logging modle
- module
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
Abstract
The invention discloses the selective protection system of a kind of MCCB moulded case circuit breaker, including chopper and supply line, described chopper includes device for under-voltage releasing equipment and overcurrent release, described device for under-voltage releasing equipment is electrically connected with voltmeter one, the outfan of described voltmeter one is electrically connected with voltage logging modle one, the outfan of described voltage logging modle one is electrically connected with voltage-contrast module, described overcurrent release is electrically connected with ammeter one, the outfan of described ammeter one is electrically connected with electric current logging modle one, the outfan of described electric current logging modle one is electrically connected with current vs's module, described supply line has been electrically connected voltmeter two and ammeter two, the outfan of described voltmeter two and ammeter two has been electrically connected voltage logging modle two and electric current logging modle two.The present invention possesses breaking capacity and by force and possesses selective advantage, solves stable and reliability is bad, protect the problem switched only as subordinate.
Description
Technical field
The present invention relates to breaker technical field, the selective protection system of a kind of MCCB moulded case circuit breaker
System.
Background technology
Moulded case circuit breaker (MCCB), chopper: can turn on, carry and electricity under the conditions of disjunction normal circuit
Stream, also can connect, carry a kind of mechanical switch electrical equipment of certain time and breaking current under the improper circuit condition of regulation.
Civil buildings design Low Voltage Circuit Breaker be mainly used in the overload of circuit, short circuit, overcurrent, decompression, under-voltage, ground connection, electric leakage,
The purposes such as Dual-power automatic switching and protection when infrequently starting of motor, operation.Wherein ACB-universal (frame-type)
Chopper with the MCCB-breaker of plastic casing main distinction is: 1, breaking capacity is different, and the breaking capacity of ACB is of a relatively high, MCCB time
It, MCB is worst, and the breaking capacity of MCCB can be accomplished the highest by the manufacturing enterprise now with many MCCB certainly, but stable
Bad with reliability；2, the position installed is different, and ACB is adopted as main circuit breaker more, because itself has delay function,
Can time delay disjunction and dropout, but also there is good communication function and selectivity, and MCCB be adopted as distribution electricity more
Device, in the centre position of circuit, because it only possesses breaking capacity and inverse time lag dropout ability, does not possess selectivity, how with only
Can be as subordinate's protection switch.
Summary of the invention
It is an object of the invention to provide the selective protection system of a kind of MCCB moulded case circuit breaker, possess disjunction
Ability is strong and possesses selective advantage, solves stable and reliability is bad, protect the problem switched only as subordinate.
For achieving the above object, the present invention provides following technical scheme: the selection of a kind of MCCB moulded case circuit breaker
Property protection system, including chopper and supply line, described chopper includes device for under-voltage releasing equipment and overcurrent release, described under-voltage
Electrical apparatus release is electrically connected with voltmeter one, and the outfan of described voltmeter one is electrically connected with voltage logging modle one, and described voltage is remembered
The outfan of record module one is electrically connected with voltage-contrast module.
Described overcurrent release is electrically connected with ammeter one, and the outfan of described ammeter one is electrically connected with electric current record mould
Block one, the outfan of described electric current logging modle one is electrically connected with current vs's module.
Described supply line has been electrically connected the defeated of voltmeter two and ammeter two, described voltmeter two and ammeter two
Go out end and be electrically connected voltage logging modle two and electric current logging modle two, described voltage logging modle two and electric current record mould
The outfan of block two input with voltage-contrast module and current vs's module respectively electrically connects.
The outfan of described voltage-contrast module and current vs's module is electrically connected with microprocessor, described microprocessor
First outfan is electrically connected with residual current operated protective device, the outfan of described residual current operated protective device respectively with device for under-voltage releasing equipment and
The input electrical connection of overcurrent release.
Preferably, the second outfan of described microprocessor has also been electrically connected display lamp and alarm.
Preferably, described supply line is electrically connected with power supply unit by circuit converter, and said supply unit includes list
Phase earthing module, phase three-wire three earthing module and three-phase and four-line earthing module, described single-phase earthing module, phase three-wire three ground connection mould
Block and three-phase and four-line earthing module all electrically connect with the circuit changing switch in circuit converter.
Compared with prior art, beneficial effects of the present invention is as follows:
1, the present invention is by arranging selective protection system, has reached stable and reliability is preferable, it is possible to protected as subordinate
Protect the effect of switch.
2, the present invention is by carrying out disjunction process respectively to the voltage and current of chopper, it is possible to increase MCCB cabinet
The breaking capacity of formula chopper, by circuit converter by the power supply unit of supply line at single-phase earthing module, phase three-wire three
Select the type of supply module among earthing module and three-phase and four-line earthing module continuously, make this chopper not only possess point
Cutting capacity and inverse time lag dropout ability, and possess breaking capacity and by force and possess selective advantage, solve stable and reliable
Property bad, only as subordinate protection switch problem.
Accompanying drawing explanation
Fig. 1 is control system figure of the present invention.
In figure: 1 chopper, 101 device for under-voltage releasing equipment, 102 overcurrent releases, 2 supply lines, 3 voltmeter one, 4 voltage notes
Record module one, 5 voltage-contrast module, 6 ammeter one, 7 electric current logging modle one, 8 current vs's modules, 9 voltmeter two, 10 electricity
Stream table two, 11 microprocessor, 12 residual current operated protective devices, 13 display lamps, 14 alarms, 15 circuit converters, 16 power supply units,
161 single-phase earthing modules, 162 phase three-wire three earthing modules, 163 three-phase and four-line earthing modules, 17 voltage logging modle two, 18 electricity
Stream logging modle two.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1, the selective protection system of a kind of MCCB moulded case circuit breaker, including chopper 1 and power supply
Circuit 2, chopper 1 includes device for under-voltage releasing equipment 101 and overcurrent release 102, and device for under-voltage releasing equipment 101 is electrically connected with voltmeter 1,
The outfan of voltmeter 1 is electrically connected with voltage logging modle 1, and the outfan of voltage logging modle 1 is electrically connected with voltage
Contrast module 5.
Overcurrent release 102 is electrically connected with ammeter 1, and the outfan of ammeter 1 is electrically connected with electric current logging modle
One 7, the outfan of electric current logging modle 1 is electrically connected with current vs's module 8.
Supply line 2 has been electrically connected the defeated of voltmeter 29 and ammeter 2 10, voltmeter 29 and ammeter 2 10
Go out end and be electrically connected voltage logging modle 2 17 and electric current logging modle 2 18, voltage logging modle 2 17 and electric current record
The outfan of module 2 18 input with voltage-contrast module 5 and current vs's module 8 respectively electrically connects.
Supply line 2 is electrically connected with power supply unit 16 by circuit converter 15, and power supply unit 16 includes single-phase earthing mould
Block 161, phase three-wire three earthing module 162 and three-phase and four-line earthing module 163, single-phase earthing module 161, phase three-wire three ground connection mould
Block 162 and three-phase and four-line earthing module 163 all electrically connect with the circuit changing switch in circuit converter 15.
The outfan of voltage-contrast module 5 and current vs's module 8 is electrically connected with microprocessor 11, the of microprocessor 11
One outfan is electrically connected with residual current operated protective device 12, and residual current operated protective device 12 i.e. RCD is in regulation
Under the conditions of, when residual current meets or exceeds set-point, the mechanical switch electrical equipment of energy automatic shutoff circuit or combined electrical apparatus, press
The method of operation is divided: without accessory power supply, use accessory power supply；Divide by mounting means: fixed installation and link；With cable
Removable use；Divide by number of poles and current loop number: one pole amount line, the two poles of the earth, the two poles of the earth three line, three grades, three grade of four line, quadrupole.；Root
Divide according to defencive function: only residual current protecting function；Band overload protection；Band short-circuit protection；Band overload and short-circuit protection；Band mistake
Voltage protection；Multifunction protection (such as under-voltage, disconnected phase, overcurrent, overvoltage etc.)；By the mode of connection: with screw or bolt
Wiring；Plug-in type；Divide by specified residual current adjustability: rated residual operating current is non-adjustable, and rated residual operating current can
Adjust；The outfan of residual current operated protective device 12 input with device for under-voltage releasing equipment 101 and overcurrent release 102 respectively electrically connects.
Second outfan of microprocessor 11 has also been electrically connected display lamp 13 and alarm 14.
Operation principle: in the case of the rated voltage of chopper 1 is equal to the rated voltage of supply line 2, on the one hand, voltage
The magnitude of voltage of device for under-voltage releasing equipment 101 is delivered in voltage logging modle 1 by table 1, and on the other hand, voltmeter 29 will power supply
The magnitude of voltage of circuit 2 is delivered in voltage logging modle 2 17, and then voltage-contrast module 5 is by voltage logging modle 1 and electricity
Magnitude of voltage in pressure logging modle 2 17 is made and being compared, if the voltage of device for under-voltage releasing equipment 101 and supply line 2 in chopper 1
Calculating voltage is unequal, and microprocessor 11 starts to control display lamp 13 and lights and control alarm 14 and carry out blowing a whistle alarm, with
Time, microprocessor 11 controls device for under-voltage releasing equipment 101 by residual current operated protective device 12 and chopper 1 is carried out voltage disjunction process,
Then, by circuit converter 15 by the power supply unit 16 of supply line 2 at single-phase earthing module 161, phase three-wire three ground connection mould
The type of supply module is selected continuously among block 162 and three-phase and four-line earthing module 163, until under-voltage de-in chopper 1
Till the voltage of button device 101 is equal with the calculating voltage of supply line 2, microprocessor 11 start to control display lamp 13 extinguish and
Control alarm 14 to stop blowing a whistle alarm.
In the case of the rated current of chopper 1 rated current more than supply line 2, on the one hand, ammeter 1 incited somebody to action
The current value of stream electrical apparatus release 102 is delivered in electric current logging modle 1, and on the other hand, ammeter 2 10 is by the electricity of supply line 2
Flow valuve is delivered in electric current logging modle 2 18, and then current vs's module 8 is by electric current logging modle 1 and electric current logging modle
Current value in 2 18 is made and being compared, if the electric current of overcurrent release 102 is less than the calculating current of supply line 2 in chopper 1,
Microprocessor 11 starts to control display lamp 13 and lights and control alarm 14 and carry out blowing a whistle alarm, and meanwhile, microprocessor 11 leads to
Cross residual current operated protective device 12 to control overcurrent release 102 chopper 1 is carried out electric current disjunction process, then, turned by circuit
Parallel operation 15 by the power supply unit 16 of supply line 2 at single-phase earthing module 161, phase three-wire three earthing module 162 and three-phase and four-line
The type of supply module is selected continuously, until the electric current of overcurrent release 102 is big in chopper 1 among earthing module 163
Till the calculating current of supply line 2, microprocessor 11 starts to control display lamp 13 and extinguishes and control alarm 14 and stop
Blow a whistle alarm.
In sum: the selective protection system of this MCCB moulded case circuit breaker, by arranging selective protection system
System, has reached stable and reliability is preferable, it is possible to the effect switched as subordinate's protection, by the voltage of chopper 1 and electricity
Stream carries out disjunction process respectively, it is possible to increase the breaking capacity of MCCB moulded case circuit breaker, and circuit converter 15 will power supply
The power supply unit 16 of circuit 2 single-phase earthing module 161, phase three-wire three earthing module 162 and three-phase and four-line earthing module 163 it
In select the type of supply module continuously, make this chopper 1 not only possess breaking capacity and inverse time lag dropout ability, and
Possess breaking capacity and by force and possess selective advantage, solve stable and reliability is bad, only as subordinate's protection switch
Problem, possess breaking capacity strong and possess selective advantage, solve stable and reliability is bad, only as subordinate guarantor
The problem protecting switch.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (3)
1. a selective protection system for MCCB moulded case circuit breaker, including chopper (1) and supply line (2), institute
State chopper (1) and include device for under-voltage releasing equipment (101) and overcurrent release (102), it is characterised in that: described device for under-voltage releasing equipment
(101) being electrically connected with voltmeter one (3), the outfan of described voltmeter one (3) is electrically connected with voltage logging modle one (4), institute
The outfan stating voltage logging modle one (4) is electrically connected with voltage-contrast module (5)；
Described overcurrent release (102) is electrically connected with ammeter one (6), and the outfan of described ammeter one (6) is electrically connected with electricity
Stream logging modle one (7), the outfan of described electric current logging modle one (7) is electrically connected with current vs's module (8)；
Described supply line (2) has been electrically connected voltmeter two (9) and ammeter two (10), described voltmeter two (9) and electricity
The outfan of stream table two (10) has been electrically connected voltage logging modle two (17) and electric current logging modle two (18), described voltage
The outfan of logging modle two (17) and electric current logging modle two (18) respectively with voltage-contrast module (5) and current vs's module
(8) input electrical connection；
The outfan of described voltage-contrast module (5) and current vs's module (8) is electrically connected with microprocessor (11), described micro-place
First outfan of reason device (11) is electrically connected with residual current operated protective device (12), the outfan of described residual current operated protective device (12)
Input with device for under-voltage releasing equipment (101) and overcurrent release (102) electrically connects respectively.
The selective protection system of a kind of MCCB moulded case circuit breaker the most according to claim 1, it is characterised in that:
Second outfan of described microprocessor (11) has also been electrically connected display lamp (13) and alarm (14).
The selective protection system of a kind of MCCB moulded case circuit breaker the most according to claim 1, it is characterised in that:
Described supply line (2) is electrically connected with power supply unit (16) by circuit converter (15), and said supply unit (16) includes list
Phase earthing module (161), phase three-wire three earthing module (162) and three-phase and four-line earthing module (163), described single-phase earthing module
(161), phase three-wire three earthing module (162) and three-phase and four-line earthing module (163) all with the circuit in circuit converter (15)
Permutator electrically connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610658370.3A CN106207983A (en) | 2016-08-11 | 2016-08-11 | A kind of selective protection system of MCCB moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610658370.3A CN106207983A (en) | 2016-08-11 | 2016-08-11 | A kind of selective protection system of MCCB moulded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106207983A true CN106207983A (en) | 2016-12-07 |
Family
ID=57515033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610658370.3A Pending CN106207983A (en) | 2016-08-11 | 2016-08-11 | A kind of selective protection system of MCCB moulded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106207983A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1137146A2 (en) * | 2000-03-17 | 2001-09-26 | AEG Niederspannungstechnik GmbH & Co. KG | Selective circuit breaker |
| CN101752148A (en) * | 2008-12-12 | 2010-06-23 | 施耐德电器工业公司 | Circuit breaker with selectivity |
| CN102232236A (en) * | 2009-08-11 | 2011-11-02 | 富士电机机器制御株式会社 | Circuit breaker |
| JP2016144321A (en) * | 2015-02-03 | 2016-08-08 | 中国電力株式会社 | Control apparatus of circuit breaker |
-
2016
- 2016-08-11 CN CN201610658370.3A patent/CN106207983A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1137146A2 (en) * | 2000-03-17 | 2001-09-26 | AEG Niederspannungstechnik GmbH & Co. KG | Selective circuit breaker |
| CN101752148A (en) * | 2008-12-12 | 2010-06-23 | 施耐德电器工业公司 | Circuit breaker with selectivity |
| CN102232236A (en) * | 2009-08-11 | 2011-11-02 | 富士电机机器制御株式会社 | Circuit breaker |
| JP2016144321A (en) * | 2015-02-03 | 2016-08-08 | 中国電力株式会社 | Control apparatus of circuit breaker |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |
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| WD01 | Invention patent application deemed withdrawn after publication |