CN107465175B - Prevent the microcomputer protecting device of maloperation - Google Patents
Prevent the microcomputer protecting device of maloperation Download PDFInfo
- Publication number
- CN107465175B CN107465175B CN201610394018.3A CN201610394018A CN107465175B CN 107465175 B CN107465175 B CN 107465175B CN 201610394018 A CN201610394018 A CN 201610394018A CN 107465175 B CN107465175 B CN 107465175B
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- switch
- circuit
- protecting device
- microcomputer protecting
- central processing
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- 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
-
- 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
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- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Abstract
The invention discloses a kind of microcomputer protecting devices for preventing maloperation; the device will prevent from missing division breaker module, prevent on-load division disconnecting switch module, with preventing band cable address/splice grafting switch module and closing breaker module when preventing switch with ground being integrated into existing microcomputer protecting device; simultaneously; it can be realized in conjunction with existing microcomputer protecting device and issue trip command in high-voltage circuitbreaker shorted to earth; disconnect high-voltage circuitbreaker; to both realize the basic defencive function of microcomputer protecting device; five anti-functions are realized again, improve electrical safety.Furthermore the present invention controls the folding of respective circuit breakers and switch by the current value detected inside circuit, to realize intelligence, reduces manual operation, to reduce the probability of maloperation.
Description
Technical field
The present invention relates to a kind of microcomputer protecting devices, can prevent accidentally division breaker, anti-stop-band more particularly, to one kind
Load division disconnecting switch, close breaker when preventing with cable address/conjunction earthing switch and preventing switch with ground prevent maloperation
Microcomputer protecting device.
Background technique
Computerized protection be for measuring, controlling, protection and a kind of economical protection of communication integral；For
Distribution network terminal high-tension distribution chamber of converting is made to measure, using the directionless current protection of three-stage as core, be equipped with electrical network parameter monitoring and
Function is acquired, traditional ammeter, voltmeter, power meter, frequency meter, kilowatt-hour meter etc. can be saved, and can incite somebody to action by communication port
Measurement data and protection information remote transmitting host computer, facilitate realization distribution automation；Device is according to the characteristic of supplying power allocation in device
It is inside integrated with automatic closing function, can flexibly realize the standby throwing of inlet wire and the standby throwing function of mother stock.It is grasped by microcomputer protecting device
Make the operation button input corresponding operation instruction on panel, to realize the switching of respective switch, and can will be corresponding
It executes instruction and is shown by the display screen on operation panel, convenient for observation.
The anti-prevention method of electric system at present five is mainly assisted by indoor high-voltage electromagnetic lock, disconnecting switch and earthing switch
Contact is realized.Every high-tension switch cabinet of the prior art needs to access three to five high-voltage electricity magnetic padlocks to realize, at the same with ground connection
Switch auxiliary contact access high-tension switch cabinet closing circuit realizes, cause device resource waste and auxiliary contact it is unreliable
Property, it is easy to cause maloperation；As long as division circuit-breaker switching on-off circuit operation energy can hand close to the personnel of switch simultaneously
Dynamic operation divide-shut brake, Electrical Safety does not have safety, random bigger, is unfavorable for field management.
Summary of the invention
In order to solve the problems of in the prior art, the purpose of the present invention is to provide one kind can prevent accidentally division
Breaker prevents on-load division disconnecting switch, prevents band cable address/conjunction earthing switch and closes breaker when preventing switch with ground
The microcomputer protecting device for preventing maloperation, the device in existing microcomputer protecting device integrate prevent accidentally division breaker mould
Block prevents on-load division disconnecting switch module, prevents band cable address/conjunction earthing switch and closes breaker when preventing switch with ground
Module, can either realize the basic function of microcomputer protecting device, and can be realized five and prevent, convenient for management.
In order to achieve the object of the present invention, used technical solution is:
The microcomputer protecting device for preventing maloperation, integrating in microcomputer protecting device prevents from missing division breaker module, prevents
Stop-band load division disconnecting switch module, with preventing band cable address/splice grafting switch module and make and break road when preventing switch with ground
Device module；
It is described prevent accidentally division breaker module include that trip protection circuit, closing protective circuit, control power supply, air are opened
Pass and control bus, the positive and negative terminal of the control bus passes sequentially through the air switch respectively and the control power supply is connected to
The both ends in the trip protection circuit and the closing protective circuit；
It is described prevent on-load division disconnecting switch module include the first high-tension current detection circuit, the first Acquisition Circuit,
The output end of first central processing unit, first switch and the first blocking coil, the first high-tension current detection circuit passes through institute
The signal input part that the first Acquisition Circuit is connected to first central processing unit is stated, the signal of first central processing unit is defeated
Outlet output control signal controls the first switch folding, and the first switch is connected with first blocking coil, described
First blocking coil controls disconnecting switch division, and when the conducting of the first blocking coil, disconnecting switch not can be carried out division operation；
With the preventing band cable address/splice grafting switch module includes the second high-tension current detection circuit, the second Acquisition Circuit, the
Two central processing units, second switch and the second blocking coil, the output end of the second high-tension current detection circuit pass through described
Second Acquisition Circuit is connected to the signal input part of second central processing unit, the signal output of second central processing unit
End output control signal controls second switch folding, and the second switch is connected with second blocking coil, and described the
Two blocking coils control earthing switch division, and when the conducting of the second blocking coil, earthing switch not can be carried out division operation；
It is described to prevent from closing breaker module when switch with ground including earthing switch auxiliary contact, photoelectrical coupler and the
Three central processing units, the normally opened contact of the earthing switch auxiliary contact are connect with the input all the way of the photoelectrical coupler, institute
State the zero curve-KM of the normally-closed contact connection control bus of earthing switch auxiliary contact, the another way input of the photoelectrical coupler
Firewire+the KM of control bus is connected, the output end of the photoelectrical coupler is connected to the third central processing unit；When ground connection is opened
When closing conjunction, the earthing switch auxiliary contact closure, the third central processing unit locking does not execute user and passes through man-machine friendship
Mutual interface inputs closing operation.
Technical solution of the present invention will prevent from missing division breaker module, and prevent on-load division disconnecting switch module, prevent
Switch module and breaker module is closed when preventing switch with ground be integrated into existing microcomputer protecting device to band cable address/splice grafting
It is interior, meanwhile, it can be realized in conjunction with existing microcomputer protecting device and issue trip command in high-voltage circuitbreaker shorted to earth, make high pressure
Circuit breaker Q F is disconnected, to not only realize the basic defencive function of microcomputer protecting device, but also is realized five anti-functions, is improved use
Electric safety.Furthermore the present invention controls the folding of respective circuit breakers and switch by the current value detected inside circuit, from
And intelligence is realized, reduce manual operation, to reduce the probability of maloperation.
In order to enable microcomputer protecting device provided by the present invention timely to sense high-voltage circuitbreaker shorted to earth
Electric current disconnects high-voltage circuitbreaker in time, and improvements introduced of the present invention is: described to prevent from closing breaker module when switch with ground
It further include third high-tension current detection circuit and third Acquisition Circuit, the output end of the third high-tension current detection circuit passes through
The third Acquisition Circuit is connected to the signal input part of the third central processing unit.
Detailed description of the invention
Fig. 1 is the theory structure block diagram for the microcomputer protecting device that the present invention prevents maloperation；
Fig. 2 is that the present invention prevents one kind that accidentally division breaker module is prevented documented by the microcomputer protecting device of maloperation
Schematic diagram；
Fig. 3 is that the present invention prevents from preventing on-load division disconnecting switch module documented by the microcomputer protecting device of maloperation
A kind of schematic diagram；
Fig. 4 is that the present invention prevents band cable address/splice grafting is prevented documented by the microcomputer protecting device of maloperation switch module
A kind of schematic diagram；
Fig. 5 is that the present invention prevents from preventing documented by the microcomputer protecting device of maloperation closing breaker mould when switch with ground
A kind of schematic diagram of block.
Specific embodiment
For further instruction technical solution of the present invention, it is illustrated herein in conjunction with attached drawing and specific implement.
[embodiment one]
Referring to Fig.1 shown in -5, a kind of microcomputer protecting device preventing maloperation provided by the invention, the microcomputer protecting device
In be integrated with prevent accidentally division breaker module, prevent on-load division disconnecting switch module, prevent band cable address/conjunction earthing switch
Module and while preventing switch with ground, close breaker module.Wherein:
It is described to prevent the control panel input control instruction realization that accidentally division breaker module passes through microcomputer protecting device from opening
The combined floodgate of pass, tripping control comprising the trip protection circuit for realizing tripping, the closing protective for realizing combined floodgate return
Road and control power supply C1, air switch ZK and control bus, wherein control bus refers to high-tension switch gear secondary side power supply
Line.Specific connection type is the positive and negative terminal+KM/-KM of the control bus, and the positive and negative terminal of control bus is firewire or zero curve,
Or honest galvanic electricity or negative direct current；The air switch ZK is passed sequentially through respectively and the control power supply C1 is connected to the jump
The both ends in lock protective loop and the closing protective circuit；The module needs operator to pass through microcomputer protecting device operation interface
Need to input password, when password bad can not carry out breaking-closing operating.To greatly improve safety, it is effectively prevented
Non- operator on duty carries out maloperation.
It is described prevent on-load division disconnecting switch module include for detect high-tension current the first high-tension current detect
Circuit, the first Acquisition Circuit for acquiring the first high-tension current detection circuit output signal, for handling current signal and leading to
Cross the first central processing unit of the current signal output control signal control first switch closure of processing, for making the first locking line
Enclose the first switch that K1 is powered and the first blocking coil for the disconnecting switch QS in locking electric system；First high pressure
The output end of current detection circuit is connected to the signal input part of first central processing unit by first Acquisition Circuit,
The signal output end output control signal of first central processing unit controls first switch folding, the first switch with
The first blocking coil K1 series connection, the first blocking coil K1 controls disconnecting switch QS division, as the first blocking coil K1
When conducting, disconnecting switch QS not can be carried out division operation；
The module detects electric current by the first high-tension current detection circuit, when the first high-tension current detection circuit has detected
When electric current, by the first Acquisition Circuit sampled current signals to the first central processing unit, the first central processing unit detects electric current
Signal drives the contact C5-C6 of first switch to be closed, and the first blocking coil K1, which is powered, at this time is connected, so that disconnecting switch
QS not can be carried out division operation.This module is by detection electric current, so that ensure that cannot grasp in the case where there is stream (having load)
Make disconnecting switch QS, and then prevents the high-voltage electricity kinetic potential for carrying out division generation under high current.
It is described that prevent with cable address/splice grafting switch module include detecting electricity for detecting the second high-tension current of high-tension current
Road, the second Acquisition Circuit for acquiring the second high-tension current detection circuit output signal, for handling current signal and passing through
The current signal output control signal control second switch of processing is closed the second central processing unit, for making the second blocking coil K2
The second switch of energization and the second blocking coil K2 for the earthing switch JD in locking electric system, specific connection relationship
Second central processing is connected to by second Acquisition Circuit for the output end of the second high-tension current detection circuit
The signal input part of device, the signal output end output control signal of second central processing unit control the second switch and open
It closing, the second switch is connected with the second blocking coil K2, and the second blocking coil K2 controls earthing switch JD division,
When the conducting of the second blocking coil, earthing switch JD not can be carried out division operation；
The module is passed through by the electric current in the second high-tension current detection circuit measure loop when having detected electric current
Second Acquisition Circuit is sampled to the second central processing unit, and the second central processing unit detects current signal and exports control signal,
The contact C7-C8 closure of second switch is driven, the second blocking coil K2, which is powered, at this time is connected, so that earthing switch JD not can be carried out
Division operation.The module is unable to operational grounding switch in the case where there is stream (having load) by detection electric current, to ensure that
JD folding, and then prevent the shorted to earth that division generation is carried out under high current.
It is described to prevent from closing breaker module when switch with ground including earthing switch auxiliary contact IQF, photoelectrical coupler OC
And third central processing unit, the normally opened contact and the photoelectrical coupler OC of the earthing switch auxiliary contact IQF is all the way
Input the connection ,-KM, the photoelectrical coupler OC of the normally-closed contact connection control bus of the earthing switch auxiliary contact IQF
Another way input connection control bus+KM, the output end of the photoelectrical coupler OC is connected to the third central processing unit；
When earthing switch JD closure, the earthing switch auxiliary contact IQF closure, the third central processing unit locking is not executed
User inputs closing operation by human-computer interaction interface.
When this module ground switch JD is coincidence, earthing switch auxiliary contact IQF is closed state, at this time control bus fire
Line end+KM is connected by photoelectrical coupler OC light emitting source to the zero line side-KM of control bus, and photoelectrical coupler OC shines, photoelectricity
Coupler OC light-receiving device receives optical signal conducting, and third central processing unit I/O acquisition is series at photoelectrical coupler OC light-receiving device
Both ends also simultaneously turn on, and third central processing unit executes software command and carries out locking, even if user's operation panel is closed at this time
Lock (password is correct), third central processing unit are also refused to execute order of closing a floodgate；Refuse to execute simultaneously to close a floodgate to order and passes through microcomputer guarantor
Display screen on the operation panel of protection unit is shown, so that operator can intuitively understand.
[embodiment two]
The present embodiment is documented in example 1 to prevent conjunction breaker module when switch with ground from also adding third
The output end of high-tension current detection circuit and third Acquisition Circuit, the third high-tension current detection circuit is adopted by the third
Collector is connected to the signal input part of the third central processing unit.The embodiment occurs in earthing switch auxiliary contact 1QF
When failure, third central processing unit can't detect earthing switch JD closure signal.It closes a floodgate at this time, high pressure primary current passes through high pressure
Circuit breaker Q F flows to earthing switch JD, shorted to earth；Third high-tension current detection circuit detects corresponding shorted to earth at this time
Electric current makes third central processing unit issue trip command, disconnects high-voltage circuitbreaker QF, to ensure that Electrical Safety.
Closing protective circuit and trip protection circuit documented by the application can use any one in the prior art,
Closing protective circuit is mainly made of concatenated closing switch HJ and closing coil HQ provided herein；The trip protection circuit
It is mainly made of concatenated trip switch TJ and breaking coil TQ, as shown in Figure 2.In addition, the first high pressure documented by the application
Current detection circuit, the second high-tension current detection circuit and third high-tension current detection circuit can use existing any one
The circuit for being able to detect high current is realized, is mainly to be made of high-tension current inductor provided herein.As in Figure 3-5,
One high-tension current detection circuit is made of high-tension current inductor TAa1 and TAc1, and the output of TAa1 and TAc1 are separately input into
One Acquisition Circuit；Second high-tension current detection circuit is made of high-tension current inductor TAa2 and TAc2, and TAa2 and TAc2's is defeated
It is separately input into the second Acquisition Circuit out；Third high-tension current detection circuit is made of high-tension current inductor TAa3 and TAc3,
The output of TAa3 and TAc3 is separately input into third Acquisition Circuit.
Here, the first Acquisition Circuit, the second Acquisition Circuit documented by the application and third Acquisition Circuit can use and appoint
A kind of what circuit that can be realized current acquisition, here, it is provided herein be the first Acquisition Circuit, the second Acquisition Circuit and
Third Acquisition Circuit is mainly made of current transformer.As in Figure 3-5, the first Acquisition Circuit is by current transformer Ta1 and Tc1
Composition, the input of Ta1 and Tc1 connect the output of the first high-tension current detection circuit respectively, and the output of Ta1 and Tc1 are respectively connected to the
One central processing unit；Second Acquisition Circuit is made of current transformer Ta2 and Tc2, and it is high that the input of Ta2 and Tc2 connect second respectively
The output of the output of piezoelectricity current detection circuit, Ta2 and Tc2 are respectively connected to the second central processing unit；Third Acquisition Circuit is by electric current
Mutual inductor Ta3 and Tc3 composition, the input of Ta3 and Tc3 connect the output of the second high-tension current detection circuit respectively, Ta3 and Tc3's
Output is respectively connected to third central processing unit.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (9)
1. preventing the microcomputer protecting device of maloperation, it is characterised in that: integrating in microcomputer protecting device prevents accidentally division open circuit
Device module prevents on-load division disconnecting switch module, with preventing band cable address/splice grafting switch module and prevents switch with ground
When close breaker module；
It is described prevent accidentally division breaker module include trip protection circuit, closing protective circuit, control power supply, air switch and
Control bus, the positive and negative terminal of the control bus passes sequentially through the air switch respectively and the control power supply be connected to it is described
The both ends in trip protection circuit and the closing protective circuit；
It is described to prevent on-load division disconnecting switch module from including the first high-tension current detection circuit, the first Acquisition Circuit, first
Central processing unit, first switch and the first blocking coil, the output end of the first high-tension current detection circuit pass through described the
One Acquisition Circuit is connected to the signal input part of first central processing unit, the signal output end of first central processing unit
Output control signal controls the first switch folding, and the first switch is connected with first blocking coil, and described first
Blocking coil controls disconnecting switch division, and when the conducting of the first blocking coil, disconnecting switch not can be carried out division operation；
With the preventing band cable address/splice grafting switch module is including in the second high-tension current detection circuit, the second Acquisition Circuit, second
The output end of central processor, second switch and the second blocking coil, the second high-tension current detection circuit passes through described second
Acquisition Circuit is connected to the signal input part of second central processing unit, and the signal output end of second central processing unit is defeated
Control signal controls the second switch folding out, and the second switch is connected with second blocking coil, and described second closes
Locking wire circle controls earthing switch division, and when the conducting of the second blocking coil, earthing switch not can be carried out division operation；
It is described to prevent from closing breaker module when switch with ground including in earthing switch auxiliary contact, photoelectrical coupler and third
Central processor, the normally opened contact of the earthing switch auxiliary contact is connect with the input all the way of the photoelectrical coupler, described to connect
Ground switchs the zero curve-KM of the normally-closed contact connection control bus of auxiliary contact, and the another way of the photoelectrical coupler inputs connection
Firewire+the KM of control bus, the output end of the photoelectrical coupler are connected to the third central processing unit；When earthing switch closes
When conjunction, the earthing switch auxiliary contact closure, the third central processing unit locking does not execute user and passes through human-computer interaction
Interface inputs closing operation.
2. the microcomputer protecting device according to claim 1 for preventing maloperation, it is characterised in that: it is described to prevent with ground open
Guan Shihe breaker module further includes third high-tension current detection circuit and third Acquisition Circuit, the third high-tension current detection
The output end of circuit is connected to the signal input part of the third central processing unit by the third Acquisition Circuit.
3. the microcomputer protecting device according to claim 1 or 2 for preventing maloperation, it is characterised in that: the closing protective
Circuit is mainly made of concatenated closing switch and closing coil；The trip protection circuit mainly by concatenated trip switch and
Breaking coil composition.
4. the microcomputer protecting device according to claim 1 or 2 for preventing maloperation, it is characterised in that: first high pressure
Current detection circuit and the second high-tension current detection circuit are mainly made of high-tension current inductor.
5. the microcomputer protecting device according to claim 2 for preventing maloperation, it is characterised in that: the third high-tension current
Detection circuit is mainly made of high-tension current inductor.
6. the microcomputer protecting device according to claim 1 or 2 for preventing maloperation, it is characterised in that: described first is adopted
Collector and second Acquisition Circuit are mainly made of current transformer.
7. the microcomputer protecting device according to claim 2 for preventing maloperation, it is characterised in that: the third acquires electricity
Road is mainly made of current transformer.
8. the microcomputer protecting device according to claim 4 for preventing maloperation, it is characterised in that: the first acquisition electricity
Road and second Acquisition Circuit are mainly made of current transformer.
9. the microcomputer protecting device according to claim 5 for preventing maloperation, it is characterised in that: the first acquisition electricity
Road, second Acquisition Circuit and third Acquisition Circuit are mainly made of current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610394018.3A CN107465175B (en) | 2016-06-06 | 2016-06-06 | Prevent the microcomputer protecting device of maloperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610394018.3A CN107465175B (en) | 2016-06-06 | 2016-06-06 | Prevent the microcomputer protecting device of maloperation |
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| CN107465175A CN107465175A (en) | 2017-12-12 |
| CN107465175B true CN107465175B (en) | 2019-08-20 |
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| CN201610394018.3A Active CN107465175B (en) | 2016-06-06 | 2016-06-06 | Prevent the microcomputer protecting device of maloperation |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192569B (en) * | 2018-10-31 | 2021-04-27 | 常州赛尔克瑞特电气有限公司 | Control method for locking between three-station grounding switch and breaker opening |
| CN109991533A (en) * | 2019-03-11 | 2019-07-09 | 国网新疆电力有限公司昌吉供电公司 | Counter type control loop exports monitoring device |
| CN110853969A (en) * | 2019-11-20 | 2020-02-28 | 国网福建省电力有限公司检修分公司 | Auxiliary device for preventing high-voltage isolating switch from misoperation |
| CN115279123B (en) * | 2022-07-13 | 2023-03-24 | 浙江达能科技有限公司 | Mainboard assembly and microcomputer protection measurement and control device for preventing misoperation of circuit breaker by remote signaling |
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| CN102684135A (en) * | 2012-05-31 | 2012-09-19 | 南京深科博业电气股份有限公司 | Method for protecting relay in operation interface of breaker |
| CN203444008U (en) * | 2013-08-26 | 2014-02-19 | 西安北鱼智能科技有限公司 | High-voltage charge display locking device |
| CN203800556U (en) * | 2014-05-06 | 2014-08-27 | 浙江知祺电力自动化有限公司 | Microcomputer protection device exit relay drive circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684135A (en) * | 2012-05-31 | 2012-09-19 | 南京深科博业电气股份有限公司 | Method for protecting relay in operation interface of breaker |
| CN203444008U (en) * | 2013-08-26 | 2014-02-19 | 西安北鱼智能科技有限公司 | High-voltage charge display locking device |
| CN203800556U (en) * | 2014-05-06 | 2014-08-27 | 浙江知祺电力自动化有限公司 | Microcomputer protection device exit relay drive circuit |
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Effective date of registration: 20210729 Address after: 230000 building a12-1, Fengchao Industrial Park, Shuangfeng Development Zone, Changfeng County, Hefei City, Anhui Province Patentee after: Anhui chutong Electric Co.,Ltd. Address before: Room 221, building 1, No. 24, Lane 2058, Daye highway, Zhuangxing Town, Fengxian District, Shanghai 201402 Patentee before: SHANGHAI BOJI INTELLIGENT TECHNOLOGY Co.,Ltd. |