CN207082902U - A kind of neutral point of main transformer grounding switch remote control circuit - Google Patents
A kind of neutral point of main transformer grounding switch remote control circuit Download PDFInfo
- Publication number
- CN207082902U CN207082902U CN201720331971.3U CN201720331971U CN207082902U CN 207082902 U CN207082902 U CN 207082902U CN 201720331971 U CN201720331971 U CN 201720331971U CN 207082902 U CN207082902 U CN 207082902U
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- China
- Prior art keywords
- separating brake
- switch
- remote control
- branch road
- combined floodgate
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model embodiment discloses a kind of neutral point of main transformer grounding switch remote control circuit, including：Combined floodgate branch road and separating brake branch road, combined floodgate branch road are connected with separating brake branch circuit parallel connection, and combined floodgate branch road and separating brake branch road are provided with low-voltage air switch, disconnecting link remote control pressing plate and a distant place change-over switch on the spot jointly, wherein：Combined floodgate branch road is electrically connected with separating brake branch road by low-voltage air switch with AC power, and low-voltage air switch is used for the access and disconnection for controlling power supply；Combined floodgate branch road is provided with remote control closing relay normal opened contact, separating brake branch road is provided with remote control separating brake relay normally open contact, remote control closing relay normal opened contact connects one end of combined floodgate branch road and disconnecting link remote control pressing plate respectively, and remote control separating brake relay normally open contact connects one end of separating brake branch road and disconnecting link remote control pressing plate respectively；By the distant place, change-over switch electrically connect the zero line N of the other end and the low-voltage air switch of disconnecting link remote control pressing plate on the spot, improves the efficiency and accurately of neutral point of main transformer grounding switch remote control on/off switch operation.
Description
Technical field
It the utility model is related to disconnecting link control circuit technical field, more particularly to a kind of remote control of neutral point of main transformer grounding switch
Circuit.
Background technology
The splitting or integrating management of main transformer neutral point grounding switch is to ensure an important measures of electric power netting safe running, is
During preventing main transformer closing operation, producing switching overvoltage may cause to damage to transformer insulated, while also be zero
Sequence protection action message provide condition, so power transformation operation code regulation " put into operation 110kV and the above transformer when, should first close
Grounding switch, i.e., first transformer neutral point is grounded, then put into operation transformer again, after Transformer Close power transmission, according to network system
The method of operation is grounded, adjusts order to pull open transformer neutral point grounding switch according to electricity ".
In the prior art, it is necessary to which scene carries out neutral ground disconnecting link before and after main transformer closing operation power transmission is realized
Combined floodgate and sub-switching operation, automaticity is relatively low, so causes the operating time to extend, less efficient, influence main transformer power supply.Have
Though transformer station can realize transformer neutral point grounding switch remote control on/off switch operation, can not grasp in good time operation scene reality
It border situation, can not ensure to operate accurate, safe and reliable and quality, therefore how ensure that neutral point of main transformer grounding switch stops power transmission behaviour
It is accurate to make, and prevents the generation of misoperation fault, improves the Efficiency of Switching Operation, turns into the technology that those skilled in the art need to tackle key problems
Problem.
Utility model content
The utility model provides a kind of neutral point of main transformer grounding switch remote control circuit, to solve main transformer pressure in the prior art
For device breaking-closing operating, it is necessary to which scene carries out the combined floodgate and sub-switching operation of neutral ground disconnecting link, automaticity is low, and operation is accurate
The problem of property is poor, and security reliability is low.
In order to solve the above technical problems, the utility model embodiment discloses following technical scheme：
A kind of neutral point of main transformer grounding switch remote control circuit, including：Combined floodgate branch road and separating brake branch road, the combined floodgate branch road with
The separating brake branch circuit parallel connection connection, the combined floodgate branch road and separating brake branch road are provided with low-voltage air switch, disconnecting link remote control pressure jointly
Plate and a distant place change-over switch on the spot, wherein：The combined floodgate branch road is with the separating brake branch road by the low-voltage air switch with handing over
Power electric connection is flowed, the low-voltage air switch is used for the access and disconnection for controlling power supply；The combined floodgate branch road is provided with remote control
Closing relay normal opened contact, the separating brake branch road are provided with remote control separating brake relay normally open contact, the remote control combined floodgate relay
Device normal opened contact connects one end of the combined floodgate branch road and disconnecting link remote control pressing plate, the remote control separating brake relay normally open respectively
Contact connects one end of the separating brake branch road and disconnecting link remote control pressing plate respectively；The other end of the disconnecting link remote control pressing plate and institute
The zero line N of low-voltage air switch is stated to electrically connect by the contact of the distant place distant place position of change-over switch on the spot.
Preferably, the combined floodgate branch road is provided with combined floodgate limit switch, separating brake contactor normally closed contact, closing contactor line
Circle, the normally opened self-sustaining contact of closing contactor and switch knob, one end and the low-pressure air of the combined floodgate limit switch are opened
The live wire L electrical connections of pass, the both ends of the separating brake contactor normally closed contact respectively with the other end of the combined floodgate limit switch and
One end electrical connection of the closing contactor coil, the both ends of the normally opened self-sustaining contact of closing contactor respectively with the conjunction
The zero line N of the other end of lock contactor coil and the air switch is electrically connected, one end of the switch knob and the combined floodgate
The other end electrical connection of contactor coil, the another one end of the switch knob and the distant place on the spot change-over switch with regard to status
One end electrically connects.
Preferably, the separating brake branch road is provided with separating brake limit switch, closing contactor normally closed contact, separating brake contactor line
Circle, the normally opened self-sustaining contact of separating brake contactor and opening button, one end and the low-pressure air of the separating brake limit switch are opened
The live wire L electrical connections of pass, the both ends of the closing contactor normally closed contact respectively with the other end of the separating brake limit switch and
One end electrical connection of the separating brake contactor coil, the both ends of the normally opened self-sustaining contact of separating brake contactor respectively with described point
The zero line N of the other end of lock contactor coil and the air switch is electrically connected, one end of the opening button and the separating brake
The other end electrical connection of contactor coil, the another one end of the opening button and the distant place on the spot change-over switch with regard to status
One end electrically connects.
Preferably, the combined floodgate branch road and the separating brake branch road are provided with divide-shut brake common circuit, and the divide-shut brake shares
One end of circuit connects with a point in parallel of the combined floodgate branch road and the separating brake branch road, and the point in parallel is distant close to the disconnecting link
Pressure control plate and with distant place one end that change-over switch is not directly connected on the spot, the other end of the divide-shut brake common circuit and institute
State the zero line N electrical connections of low-voltage air switch.
Preferably, stop button and disconnecting link chamber door limit switch, the stopping are provided with the divide-shut brake common circuit
One end of button self-sustaining contact normally opened with the closing contactor, the normally opened self-sustaining contact of the separating brake contactor and institute respectively
The electrical connection of distant place one end that change-over switch is connected in parallel on the spot is stated, the both ends of the disconnecting link chamber door limit switch are stopped with described respectively
Only the zero line N of the other end of button and the low-voltage air switch is electrically connected.
Preferably, in addition to grounding switch position monitoring circuit, the grounding switch observation circuit close a floodgate auxiliary including disconnecting link
Help the normal opened contact of switch and the normal opened contact of disconnecting link separating brake auxiliary switch, main transformer body measure and control device, communication manager and after
Platform monitoring equipment.The communication manager communicates to connect with the main transformer body measure and control device and the background monitoring machine respectively；Institute
State normally opened connecing of the main transformer body measure and control device respectively with the normal opened contact and disconnecting link separating brake auxiliary switch of disconnecting link combined floodgate auxiliary switch
Point electrical connection.
Preferably, the remote control closing relay normal opened contact and the remote control separating brake relay normally open contact are arranged on institute
State inside main transformer body measure and control device, the disconnecting link remote control pressing plate is arranged on the observing and controlling dress where the main transformer body measure and control device
On the panel for putting screen cabinet face.
Preferably, the background monitoring machine is provided with five-proof program check logic control circuit；The background monitoring machine point
Do not connected with micro_computer five_proof imitation screen, micro_computer five_proof main frame, the communication of main transformer body measure and control device.
From above technical scheme, a kind of neutral point of main transformer grounding switch remote control that the utility model embodiment provides is electric
Road, including：Combined floodgate branch road and separating brake branch road, the combined floodgate branch road are connected with the separating brake branch circuit parallel connection, the combined floodgate branch road and
Separating brake branch road is provided with low-voltage air switch, disconnecting link remote control pressing plate and a distant place change-over switch on the spot jointly, wherein：The branch of closing a floodgate
Road is electrically connected with the separating brake branch road by the low-voltage air switch with AC power, and the low-voltage air switch is used to control
The access and disconnection of power supply；The combined floodgate branch road is provided with remote control closing relay normal opened contact, and the separating brake branch road is provided with
Separating brake relay normally open contact is remotely controlled, the remote control closing relay normal opened contact connects the combined floodgate branch road and the knife respectively
Lock is remotely controlled one end of pressing plate, and the remote control separating brake relay normally open contact connects the separating brake branch road and is remotely controlled with the disconnecting link respectively
One end of pressing plate；The other end of disconnecting link remote control pressing plate and the zero line N of the low-voltage air switch by the distant place on the spot
Change-over switch electrically connects.Five-proof program simulated operation is carried out first on micro_computer five_proof imitation screen, is judged through five prevention logic, five is anti-
After program ver-ify is correct, remote control combined floodgate or the operation of separating brake of disconnecting link can be opened in background monitoring machine, and pass through backstage and supervise
Control machine is connected with the communication of main transformer body measure and control device, and control remote control separating brake relay normally open contact or remote control closing relay are normal
The closure of contact is opened, has been respectively turned on the disconnecting link remote control combined floodgate or separating brake of disconnecting link remote control pressing plate, a distant place on the spot where change-over switch
Circuit, it is ensured that the operation of neutral point of main transformer grounding switch remote control on/off switch accurately and reliably, and is remotely controlled breaking-closing operating saving
Manpower, has saved cost, greatly reduces the operating time.Meanwhile the normal opened contact or knife of grounding switch combined floodgate auxiliary switch
The normal opened contact of lock separating brake auxiliary switch closes in real time, can be respectively turned on grounding switch observation circuit, realize in background monitoring
Real-time monitoring of the machine to disconnecting link closing position or open position, note abnormalities operational circumstances, being capable of timely processing.Can effectively it prevent
The occurrence of only disconnecting link is closed, divided by mistake by mistake, the safety and reliability of operation and operation is improved, improves operating efficiency and matter
Amount.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, below by the required accompanying drawing used in embodiment
It is briefly described, it should be apparent that, for those of ordinary skills, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of neutral point of main transformer grounding switch remote control circuit provided by the utility model；
Fig. 2 is a kind of schematic diagram of neutral point of main transformer grounding switch position monitoring circuit provided by the utility model；
Fig. 3 is a kind of neutral point of main transformer grounding switch background monitoring machine five-proof program operational control provided by the utility model
Schematic diagram；
In Fig. 1-3, symbol is expressed as：
1- low-voltage air switch, 2- disconnecting links remote control pressing plate, change-over switch, 4- remote control closing relays are normally opened on the spot in a 3- distant places
Contact, 5- remote control separating brake relay normally open contacts, 6- combined floodgate limit switches, 7- separating brake contactor normally closed contacts, 8-, which closes a floodgate, to be contacted
Device coil, the normally opened self-sustaining contact of 9- closing contactors, 10- switch knobs, 11- separating brake limit switches, 12- closing contactors are normal
Close contact, 13- separating brake contactor coils, the normally opened self-sustaining contact of 14- separating brake contactors, 15- opening buttons, 16- stop buttons,
17- disconnecting link chamber door limit switches, the normal opened contact of 18- disconnecting link combined floodgate auxiliary switches, normally opened the connecing of 19- disconnecting link separating brake auxiliary switches
Point, 20- main transformer body measure and control devices, 21- communication managers, 22- background monitoring machines.
Embodiment
In order to illustrate more clearly of the utility model embodiment, embodiment of the present utility model will be entered with reference to the accompanying drawings below
Row description.
It is a kind of structural representation of neutral point of main transformer grounding switch remote control circuit provided by the utility model referring to Fig. 1.
As shown in figure 1, the neutral point of main transformer grounding switch remote control circuit that the utility model embodiment provides includes：Combined floodgate branch road and separating brake
Branch road, the combined floodgate branch road are connected with the separating brake branch circuit parallel connection, and the combined floodgate branch road and separating brake branch road are provided with low pressure jointly
Change-over switch 3, the combined floodgate branch road pass through described with the separating brake branch road on the spot for air switch 1, disconnecting link remote control pressing plate 2 and a distant place
Low-voltage air switch 1 electrically connects with AC power, and the low-voltage air switch 1 is used for the access and disconnection for controlling power supply；It is described
Combined floodgate branch road is provided with remote control closing relay normal opened contact 4, and the separating brake branch road is provided with remote control separating brake relay normally open and connect
Point 5, the remote control closing relay normal opened contact 4 connect one end of the combined floodgate branch road and disconnecting link remote control pressing plate 2 respectively,
The remote control separating brake relay normally open contact 5 connects one end of the separating brake branch road and disconnecting link remote control pressing plate 2 respectively；It is described
The zero line N of the other end and the low-voltage air switch 1 of disconnecting link remote control pressing plate 2 is remote by distant place change-over switch 3 on the spot
The contact electrical connection in orientation.
Specifically, in the neutral point of main transformer grounding switch remote control circuit that the utility model embodiment provides, the branch of closing a floodgate
Road is provided with combined floodgate limit switch 6, separating brake contactor normally closed contact 7, closing contactor coil 8, the normally opened self-insurance of closing contactor
Contact 9 and switch knob 10 are held, one end of the combined floodgate limit switch 6 electrically connects with the live wire L of the low-voltage air switch 1,
The both ends of the separating brake contactor normally closed contact 7 other end with the combined floodgate limit switch 6 and the closing contactor respectively
One end electrical connection of coil 8, the both ends of the normally opened self-sustaining contact 9 of closing contactor respectively with the closing contactor coil
The zero line N of 8 other end and the air switch 1 is electrically connected, one end and the closing contactor line of the switch knob 10
The other end electrical connection of circle 8, one end with regard to status of the another one end of the switch knob 10 and the distant place change-over switch 3 on the spot
Electrical connection.
The separating brake branch road is provided with separating brake limit switch 11, closing contactor normally closed contact 12, separating brake contactor coil
13rd, the normally opened self-sustaining contact 14 of separating brake contactor and opening button 15, one end and the low pressure of the separating brake limit switch 11
The live wire L electrical connections of air switch 1, the both ends of the closing contactor normally closed contact 12 respectively with the separating brake limit switch 11
The other end and the separating brake contactor coil 13 one end electrical connection, the two of the normally opened self-sustaining contact 14 of separating brake contactor
End electrically connects with the other end of the separating brake contactor coil 13 and the zero line N of the air switch 1 respectively, the opening button
15 one end electrically connects with the other end of the separating brake contactor coil 13, the another one end of the opening button 15 and the distant place
One end with regard to status of change-over switch 3 electrically connects on the spot.
In the utility model embodiment, the combined floodgate branch road and the separating brake branch road are provided with divide-shut brake common circuit, institute
The one end for stating divide-shut brake common circuit connects with a point in parallel of the combined floodgate branch road and the separating brake branch road, and the point in parallel leans on
The nearly disconnecting link remote control pressing plate 2 and with distant place one end that change-over switch 3 is not directly connected on the spot, the divide-shut brake common circuit
The other end electrically connects with the zero line N of the low-voltage air switch 1.The He of stop button 16 is provided with the divide-shut brake common circuit
Disconnecting link chamber door limit switch 17, one end of the stop button 16 self-sustaining contact 9 normally opened with the closing contactor, institute respectively
The normally opened self-sustaining contact 14 of separating brake contactor and the electrical connection of distant place one end that change-over switch 3 is connected in parallel on the spot are stated, it is described
The both ends of disconnecting link chamber door limit switch 17 respectively with the other end of the stop button 16 and the zero line of the low-voltage air switch 1
N is electrically connected.
It is a kind of signal of neutral point of main transformer grounding switch position monitoring circuit provided by the utility model referring to such as Fig. 2
Figure, the grounding switch position monitoring circuit include the normal opened contact 18 and disconnecting link separating brake auxiliary switch of disconnecting link combined floodgate auxiliary switch
Normal opened contact 19, main transformer body measure and control device 20, communication manager 21 and background monitoring machine 22.
The communication manager 21 respectively with the main transformer body measure and control device 20 and the communication link of the background monitoring machine 22
Connect；The main transformer body measure and control device 20 normal opened contact 18 and disconnecting link separating brake auxiliary switch with disconnecting link combined floodgate auxiliary switch respectively
Normal opened contact 19 electrically connect.The remote control closing relay normal opened contact 4 and the remote control separating brake relay normally open contact 5 are set
Put inside the main transformer body measure and control device 20, the disconnecting link remote control pressing plate 2 is arranged on the main transformer body measure and control device institute
Measure and control device screen cabinet face panel on.The background monitoring machine 22 respectively with micro_computer five_proof imitation screen, micro_computer five_proof main frame,
The communication connection of main transformer body measure and control device 20.
During specific switch operation, check that neutral point of main transformer grounding switch control box chamber door is shut, now grounding switch case case
Door limit switch 17 closes, by a distant place, change-over switch 3 rotates afield position on the spot, and the distant place position of change-over switch connects on the spot in a distant place
Point closure.Referring to Fig. 3, for a kind of neutral point of main transformer grounding switch background monitoring machine five-proof program operation provided by the utility model
Control schematic diagram.As shown in figure 3, operating personnel are carried out on micro_computer five_proof imitation screen first by the operation sequence shown in Fig. 3
Five anti-simulated operations, are judged by five prevention logic, perform simulated operation, in background monitoring machine 22, master is clicked on successively by mouse
Become the icon of neutral ground disconnecting link, the access switch amount page, click on remote control, remote control title verification, input scheduling numbering, enter
Remote control selection, click allow to be remotely controlled, and after being verified by five-proof program, open execution and complete to be remotely controlled breaking-closing operating.
It should be noted that when main transformer high-pressure side breaker closing power transmission state, i.e., when main transformer is run, through micro_computer five_proof
Logical program judges, will forbid carrying out the closing operation of neutral point of main transformer grounding switch in background monitoring machine, when main transformer high-pressure side
After breaker open operation has a power failure, judge through five prevention logic program, can allow to carry out neutral point of main transformer earthing in background monitoring machine
Lock closing operation；Equally, can through micro_computer five_proof logical program also only in main transformer high-pressure side breaker closing transmission operation
Allow to carry out neutral point of main transformer grounding switch sub-switching operation in background monitoring machine.Therefore only input correct disconnecting link title and
After equipment scheduling numbering, after five prevention logic program judges that verification passes through, the division of neutral point of main transformer grounding switch can be performed
Lock operates.
When selecting and clicking on remote control closing operation, be remotely controlled closing relay coil obtain it is electric, restart among corresponding after
Electric apparatus coil obtains electric, finally make it that being remotely controlled closing relay normal opened contact 4 in Fig. 1 closes, closing contactor coil 8 electric self-insurance
Hold, realize the closing operation of disconnecting link, closing operation in place after the completion of, combined floodgate limit switch 6 disconnects, and has cut off that disconnecting link is distant to close control
Circuit, while disconnecting link can be seen on electrical systematic drawing of background monitoring machine and shown in conjunction position, and shown in background monitoring machine
Below device screen alarm indication is carried out in a manner of word flicker and speaker sound alarm；
When selecting and clicking on remote control sub-switching operation, the coil of banked relay obtains electric, restarts corresponding auxiliary reclay
Coil obtains electric, finally make it that being remotely controlled separating brake relay normally open contact 5 in Fig. 1 closes, separating brake contactor coil 13 electric self-sustaining,
Realize the sub-switching operation of disconnecting link, sub-switching operation in place after the completion of, separating brake limit switch 11 disconnects, and has cut off the distant sub-control system electricity of disconnecting link
Road, while disconnecting link can be seen on electrical systematic drawing of background monitoring machine and shown in a point position, and in background monitoring machine display
Below screen alarm indication is carried out in a manner of word flicker and speaker sound alarm.
While disconnecting link remote control is closed a floodgate, remote control separating brake is completed, normal opened contact 18, the disconnecting link point of disconnecting link combined floodgate auxiliary switch
The normal opened contact 19 of lock auxiliary switch is respectively closed, and dc source has been respectively turned on disconnecting link closing position or open position intake
Loop, the information such as disconnecting link closing position or open position intake is passed through into communication transfer to communication manager 21, background monitoring
Machine 22, the monitoring instruction of disconnecting link running position is carried out in real time in background monitoring machine 22, for convenience of backstage personnel are reminded, is supervised on backstage
Control machine is shown by way of word flicker and speaker sound alarm, after alarming determining, stops sound and light alarm.
During neutral point of main transformer grounding switch is remotely controlled combined floodgate or separating brake, monitor to go out during disconnecting link opening and closing lock from the background
When now abnormal, it can start and connect the distant place emergency stop circuit of remote control disconnecting link, cut off the control loop of disconnecting link, complete disconnecting link point
The urgent locking in a distant place of combined floodgate, avoid that security incident occurs；It should be noted that before background monitoring machine 22 puts into operation, by knife
Lock switch closing and switch opening position intake information is input to the lane database of background monitoring machine 22, and has carried out definition name one by one.And
And the supply voltage of the dc source of described disconnecting link position monitoring system circuit system is 220V.
From above-described embodiment as can be seen that a kind of neutral point of main transformer grounding switch remote control that the utility model embodiment provides
Circuit, including：Combined floodgate branch road and separating brake branch road, the combined floodgate branch road are connected with the separating brake branch circuit parallel connection, the combined floodgate branch road
Low-voltage air switch 1, disconnecting link remote control pressing plate 2 and a distant place change-over switch 3 on the spot are provided with jointly with separating brake branch road, wherein：It is described
Combined floodgate branch road is electrically connected with the separating brake branch road by the low-voltage air switch 1 with AC power, the low-voltage air switch 1
For controlling the access and disconnection of power supply；The combined floodgate branch road is provided with remote control closing relay normal opened contact 4, the separating brake branch
Road is provided with remote control separating brake relay normally open contact 5, and the remote control closing relay normal opened contact 4 connects the branch of closing a floodgate respectively
One end of road and the disconnecting link remote control pressing plate 2, the remote control separating brake relay normally open contact 5 connect respectively the separating brake branch road with
One end of the disconnecting link remote control pressing plate 2；The zero line N of the other end and the low-voltage air switch 1 of the disconnecting link remote control pressing plate 2 leads to
Cross the distant place on the spot the distant place position of change-over switch 3 contact electrical connection.By sentencing in micro_computer five_proof simulated operation, five prevention logic
It is disconnected, after five anti-verifications are correct, in the operation of the openable disconnecting link remote control divide-shut brake of the side of background monitoring machine 22, and supervised by backstage
Control machine 22 is connected with the communication of main transformer body measure and control device, control remote control separating brake relay normally open contact 5 or remote control combined floodgate relay
The closure of device normal opened contact 4, the disconnecting link remote control of disconnecting link remote control pressing plate 2, a distant place on the spot where change-over switch has been respectively turned on it and has closed a floodgate
Or opening circuit, it is ensured that neutral point of main transformer grounding switch remote control breaking-closing operating accurately and reliably, and is remotely controlled divide-shut brake behaviour
Manpower is saved, has saved cost, greatly reduces the operating time.Meanwhile normally opened the connecing of grounding switch combined floodgate auxiliary switch
The normal opened contact 19 of point 18 or disconnecting link separating brake auxiliary switch closes in real time, can be respectively turned on grounding switch observation circuit, realize
Real-time monitoring of the background monitoring machine 22 to disconnecting link closing position or open position, found the abnormal situation, being capable of timely processing.Can be with
The occurrence of effectively preventing disconnecting link from missing division, the safety and reliability of operation and operation is improved, improves operating efficiency
And quality.
Above-described the utility model embodiment does not form the restriction to scope of protection of the utility model.
Claims (8)
1. a kind of neutral point of main transformer grounding switch remote control circuit, including：Combined floodgate branch road and separating brake branch road, the combined floodgate branch road and institute
State the connection of separating brake branch circuit parallel connection, it is characterised in that the combined floodgate branch road and separating brake branch road are provided with low-voltage air switch jointly
(1), disconnecting link is remotely controlled pressing plate (2) and a distant place change-over switch (3) on the spot, wherein：The combined floodgate branch road passes through with the separating brake branch road
The low-voltage air switch (1) electrically connects with AC power, and the access that the low-voltage air switch (1) is used to control power supply is with breaking
Open；
The combined floodgate branch road be provided with remote control closing relay normal opened contact (4), the separating brake branch road be provided with remote control separating brake after
Electrical equipment normal opened contact (5), the remote control closing relay normal opened contact (4) connects the combined floodgate branch road respectively and the disconnecting link is distant
One end of pressure control plate (2), the remote control separating brake relay normally open contact (5) connects the separating brake branch road respectively and the disconnecting link is distant
One end of pressure control plate (2)；
The zero line N of the other end and the low-voltage air switch (1) of the disconnecting link remote control pressing plate (2) is turned on the spot by the distant place
Change the contact electrical connection of the distant place position of switch (3).
2. neutral point of main transformer grounding switch remote control circuit according to claim 1, it is characterised in that the combined floodgate branch road is set
It is normally opened certainly to be equipped with combined floodgate limit switch (6), separating brake contactor normally closed contact (7), closing contactor coil (8), closing contactor
Retaining contact (9) and switch knob (10), one end of the combined floodgate limit switch (6) and the fire of the low-voltage air switch (1)
Line L is electrically connected, the both ends of the separating brake contactor normally closed contact (7) respectively with the other end of the combined floodgate limit switch (6) and
One end electrical connection of the closing contactor coil (8), the both ends of the normally opened self-sustaining contact (9) of closing contactor respectively with
The zero line N electrical connections of the other end and the air switch (1) of the closing contactor coil (8), the switch knob (10)
One end electrically connected with the other end of the closing contactor coil (8), the another one end of the switch knob (10) with it is described remote
One end with regard to status of square change-over switch (3) on the spot electrically connects.
3. neutral point of main transformer grounding switch remote control circuit according to claim 2, it is characterised in that the separating brake branch road is set
It is normally opened to be equipped with separating brake limit switch (11), closing contactor normally closed contact (12), separating brake contactor coil (13), separating brake contactor
Self-sustaining contact (14) and opening button (15), one end and the low-voltage air switch (1) of the separating brake limit switch (11)
Live wire L electrical connections, the both ends of the closing contactor normally closed contact (12) are another with the separating brake limit switch (11) respectively
One end and the electrical connection of one end of the separating brake contactor coil (13), the two of the normally opened self-sustaining contact (14) of separating brake contactor
End electrically connects with the other end of the separating brake contactor coil (13) and the zero line N of the air switch (1) respectively, the separating brake
One end of button (15) electrically connects with the other end of the separating brake contactor coil (13), the another one end of the opening button (15)
Electrically connected with one end with regard to status of distant place change-over switch (3) on the spot.
4. neutral point of main transformer grounding switch remote control circuit according to claim 3, it is characterised in that the combined floodgate branch road and
The separating brake branch road is provided with divide-shut brake common circuit, one end of the divide-shut brake common circuit and the combined floodgate branch road and described
The point connection in parallel of the one of separating brake branch road, the point in parallel are on the spot changed close to disconnecting link remote control pressing plate (2) and with the distant place
One end that switch (3) is not directly connected, the other end of the divide-shut brake common circuit and the zero line of the low-voltage air switch (1)
N is electrically connected.
5. neutral point of main transformer grounding switch remote control circuit according to claim 4, it is characterised in that the divide-shut brake shares
Be provided with stop button (16) and disconnecting link chamber door limit switch (17) in circuit, one end of the stop button (16) respectively with institute
State the normally opened self-sustaining contact (9) of closing contactor, the normally opened self-sustaining contact (14) of the separating brake contactor and the distant place on the spot
The electrical connection of one end that change-over switch (3) is connected in parallel, the both ends of the disconnecting link chamber door limit switch (17) respectively with the stopping
The zero line N electrical connections of the other end and the low-voltage air switch (1) of button (16).
6. the neutral point of main transformer grounding switch remote control circuit according to claim any one of 1-5, it is characterised in that also include
Grounding switch position monitoring circuit, the normal opened contact (18) of the grounding switch observation circuit including disconnecting link combined floodgate auxiliary switch and
The normal opened contact (19) of disconnecting link separating brake auxiliary switch, main transformer body measure and control device (20), communication manager (21) and background monitoring
Machine (22)；
The communication manager (21) communicates with the main transformer body measure and control device (20) and the background monitoring machine (22) respectively
Connection；
The main transformer body measure and control device (20) is auxiliary with the normal opened contact (18) and disconnecting link separating brake of disconnecting link combined floodgate auxiliary switch respectively
The normal opened contact (19) of switch is helped to electrically connect.
7. neutral point of main transformer grounding switch remote control circuit according to claim 6, it is characterised in that it is described remote control close a floodgate after
Electrical equipment normal opened contact (4) and the remote control separating brake relay normally open contact (5) are arranged on the main transformer body measure and control device (20)
Inside, disconnecting link remote control pressing plate (2) are arranged on the panel in the measure and control device screen cabinet face where the main transformer body measure and control device
On.
8. neutral point of main transformer grounding switch remote control circuit according to claim 7, it is characterised in that the background monitoring machine
(22) it is provided with five-proof program check logic control circuit；
The background monitoring machine (22) respectively with micro_computer five_proof imitation screen, micro_computer five_proof main frame, main transformer body measure and control device (20)
Communication connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720331971.3U CN207082902U (en) | 2017-03-31 | 2017-03-31 | A kind of neutral point of main transformer grounding switch remote control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720331971.3U CN207082902U (en) | 2017-03-31 | 2017-03-31 | A kind of neutral point of main transformer grounding switch remote control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207082902U true CN207082902U (en) | 2018-03-09 |
Family
ID=61436085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720331971.3U Withdrawn - After Issue CN207082902U (en) | 2017-03-31 | 2017-03-31 | A kind of neutral point of main transformer grounding switch remote control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207082902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787222A (en) * | 2017-03-31 | 2017-05-31 | 山东钢铁股份有限公司 | A kind of neutral point of main transformer grounding switch remote control circuit |
-
2017
- 2017-03-31 CN CN201720331971.3U patent/CN207082902U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787222A (en) * | 2017-03-31 | 2017-05-31 | 山东钢铁股份有限公司 | A kind of neutral point of main transformer grounding switch remote control circuit |
| CN106787222B (en) * | 2017-03-31 | 2023-06-20 | 山东钢铁股份有限公司 | Main transformer neutral point grounding disconnecting link remote control circuit |
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