CN207303821U - Switchboard control circuit - Google Patents
Switchboard control circuit Download PDFInfo
- Publication number
- CN207303821U CN207303821U CN201721377970.9U CN201721377970U CN207303821U CN 207303821 U CN207303821 U CN 207303821U CN 201721377970 U CN201721377970 U CN 201721377970U CN 207303821 U CN207303821 U CN 207303821U
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- China
- Prior art keywords
- maintenance
- separating brake
- relay
- circuit
- key switch
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Abstract
The utility model discloses a kind of switchboard control circuit, it is provided with power input and N number of power output end, the consistent power control circuit of structure is provided between each power output end and power input, the control circuit is provided with breaker and key switch, the key switch and breaker are sequentially connected in series between the power input and output terminal, on-off circuit is serially connected between the breaker and key switch, the break-make of the on-off circuit is controlled by controller, the controller is connected with communication module, the controller is communicated by communication module with host computer.Beneficial effect：Using the switchboard control circuit of the utility model, maloperation is prevented, ensure service personnel's safety, make its standardization, it is simple and convenient, it is easy to accomplish, installation component is few, and input cost is few, and the very clear grasp switchboard working status in scene backstage.
Description
Technical field
Controller switching equipment field is the utility model is related to, more particularly to a kind of switchboard control circuit.
Background technology
In electrical power distribution system, it is necessary to match somebody with somebody to this during controller switching equipment to breaking down or needing to arrange for scheduled overhaul
Electric equipment, which operate a switch powering off, could carry out Maintenance and Repair.This just needs the breaker that service personnel will be connected with the controller switching equipment
Disconnect.To ensure safety of the service personnel during maintenance, the breaker of disconnection needs to be always maintained at off-state.
Due to all switchgear house mostly, not some switchboards sometimes for production, will also be carried out back brake point by blackout
Lock.If other service personnel or backstage manager do not know that the equipment on the breaker circuit is being overhauled, so that will
The closing of power circuit breaker of disconnection, this just gives the life security of the personnel detected to bring great danger.
It is more in the prior art by the way of listed record to avoid the generation of such case, i.e., the open circuit in disconnection
The brand of " maintenance " is hung up on device, and notifies backstage manager that the equipment is being overhauled.
But this overhaul of the equipments generally requires long time, if service personnel or backstage manager are handing over
It cannot accomplish detailed handing-over explanation when succeeding, omit, it is likely that cause maloperation, the breaker that will be switched off connects
It is logical.
Utility model content
To solve above technical problem, the utility model provides a kind of switchboard control circuit
Technical solution is as follows：
A kind of switchboard control circuit, is provided with power input and N number of power output end, each power output end with
The consistent power control circuit of structure is provided between power input, which is provided with breaker and key switch,
The key switch and breaker are sequentially connected in series between the power input and output terminal, its key is：The breaker
On-off circuit is serially connected between key switch, the break-make of the on-off circuit is controlled by controller, which is connected with communication
Module, the controller are communicated by communication module with host computer.Wherein, N is positive integer.
Host computer includes the back-stage management terminal of backstage manager's manipulation and the maintenance terminal of service personnel's operation, when setting
For when being overhauled, service personnel disconnects breaker at switchboard, and background work personnel and service personnel pass through host computer
Open command is sent to controller, the on-off circuit in circuit disconnects where controller control device.In this way, if not backstage work
Make personnel and service personnel all to go code to host computer transmission, circuit would not be connected, and so avoid maloperation.
Further, the controller is provided with N group power control terminal groups, N group power control terminal groups and the switch
Circuit corresponds, and the power control terminal group is provided with separating brake control terminal and maintenance control terminal.
The on-off circuit is provided with separating brake voltage comparator and maintenance voltage comparator, the same phase of separating brake voltage comparator
Input terminal connects the separating brake control terminal, and power supply is connected after inverting input string first resistor, the separating brake voltage comparator
Inverting input is grounded after also being concatenated with second resistance, and the base stage of separating brake triode, this point are connected after output terminal string 3rd resistor
The collector of lock triode connects power supply, and emitter is grounded after being sequentially connected in series the coil of the 4th resistance and separating brake relay, described point
The normally closed switch of lock relay is serially connected between the breaker and key switch；
The in-phase input end of the maintenance voltage comparator connects the maintenance control terminal, the 5th electricity of inverting input concatenation
Power supply is connected after resistance, overhaul voltage comparator inverting input also concatenate the 6th resistance after be grounded, it is described maintenance voltage compare
The output terminal of device concatenates the base stage of connection maintenance triode after the 7th resistance, and the collector of the maintenance triode connects power supply, launches
Pole is grounded after being sequentially connected in series the 8th resistance and maintenance relay coil, and the normally closed switch of the maintenance relay is serially connected in described break
Between road device and key switch, the normally closed switch of the maintenance relay and the normally closed switch string of the separating brake relay
Connect.
Using the above structure, it is corresponding with open command after controller just receives the open command of back-stage management terminal transmission
Power control terminal group in separating brake control terminal will export high level, disconnect the normally closed switch of separating brake relay so that
The corresponding circuit of the power control terminal group disconnects.Similarly, the normally closed switch for overhauling relay also will disconnect.At this time, it is as long as breaking
There is one to be not switched in device, maintenance relay and separating brake relay, circuit would not be connected, and avoid the occurrence of maloperation.
After the completion of maintenance, service personnel is gone code by overhauling terminal transmission, and notifies backstage manager connects to divide
Lock relay, so overhauls relay and separating brake relay just can turn on, and last service personnel connects breaker, whole equipment
Current supply circuit is switched on.
Further, normal open switch one end of the separating brake relay is connected connects power input through the key switch
End, the other end are grounded after concatenating separating brake indicator light；
Normally closed switch and key switch of the normal open switch one end of the maintenance relay through the maintenance relay connect electricity
Source input terminal, the other end are grounded after concatenating the maintenance indicator light.
Using the above structure, separating brake indicator light and maintenance indicator light can intuitively show the state of the current supply circuit.If
Separating brake indicator light lights, and shows Background control cutoff circuit, at this moment cannot push button switch.If separating brake indicator light extinguishes,
Surface can push button switch.If after pushing button switch, maintenance indicator light lights, and illustrates equipment in current supply circuit also
There is no starting-up later time in maintenance or service personnel, at this moment can contact backstage, determine maintenance situation.
Further, the on-off circuit is provided with 2 current sensors, and 2 current sensors detect pass through respectively
The electric current of the separating brake indicator light and maintenance indicator light, the signal output part of the current sensor are connected with the controller.
Controller can obtain separating brake indicator light by current sensor and overhaul the confession power information of indicator light, and will be for telecommunications
Breath is sent to host computer, so that host computer understands the state of current supply circuit.
Beneficial effect：Using the switchboard control circuit of the utility model, maloperation is prevented, ensure service personnel's safety,
Make its standardization, it is simple and convenient, it is easy to accomplish, installation component is few, and input cost is few, and the very clear palm in scene backstage
Hold switchboard working status.
Brief description of the drawings
Fig. 1 is the structure diagram of the switchboard of the utility model；
Fig. 2 is the circuit diagram of the switchboard of the utility model；
Fig. 3 is the on-off circuit figure of the utility model.
Embodiment
With reference to embodiment and attached drawing, the utility model is described in further detail.
As shown in Figs. 1-3, a kind of switchboard control circuit, is provided with power input and N number of power output end, each
The consistent power control circuit of structure is provided between power output end and power input, which is provided with breaker
QF and key switch S, key switch S and circuit breaker Q F are sequentially connected in series between the power input and output terminal.
On-off circuit is serially connected between the circuit breaker Q F and key switch S, the break-make of the on-off circuit is by controller control
System, the controller are connected with communication module, and the controller is communicated by communication module with host computer.
The controller is provided with N group power control terminal groups, and N group power control terminal groups and the on-off circuit one are a pair of
Should, the power control terminal group is provided with separating brake control terminal and maintenance control terminal；
The on-off circuit is provided with separating brake voltage comparator U1 and maintenance voltage comparator U2, separating brake voltage comparator U1
In-phase input end connect the separating brake control terminal, connect power supply, the separating brake voltage after inverting input string first resistor R1
The inverting input of comparator U1 is grounded after also being concatenated with second resistance R2, and three pole of separating brake is connected after output terminal string 3rd resistor R3
The base stage of pipe T1, the collector of separating brake triode T1 connect power supply, and emitter is sequentially connected in series the 4th resistance R4 and separating brake relay
It is grounded after the coil of Q1.
The normally closed switch of the separating brake relay Q1 is serially connected between the circuit breaker Q F and key switch S.The separating brake
Normal open switch one end of relay Q1 connects power input through the key switch S, and the other end is through separating brake indicator light L1 and electric current
Sensor N is grounded.
The in-phase input end of the maintenance voltage comparator U2 connects the maintenance control terminal, inverting input concatenation the 5th
Connect power supply after resistance R5, the inverting input of maintenance voltage comparator U2 is grounded after also concatenating the 6th resistance R6, the maintenance
The output terminal of voltage comparator U2 concatenates the base stage of connection maintenance triode T2 after the 7th resistance R7, the collection of maintenance triode T2
Electrode connects power supply, and emitter is grounded after being sequentially connected in series the 8th resistance R8 and maintenance relay Q2 coils.
Normally closed switch and button of the one end of normally closed switch through the separating brake relay Q1 of the maintenance relay Q2 is opened
Close S and connect the power input, the other end of the normally closed switch of the maintenance relay Q2 concatenates the circuit breaker Q F and is followed by electricity
Source output terminal.
Normally closed switch and key switch S of the normal open switch one end of the maintenance relay Q2 through the maintenance relay Q2
Power input is connect, the other end is grounded through the maintenance indicator light L2 and current sensor N.The signal of the current sensor N
Output terminal is connected with the controller.
Finally it should be noted that foregoing description is only the preferred embodiment of the utility model, the common skill of this area
Art personnel on the premise of without prejudice to the utility model aims and claim, can make under the enlightenment of the utility model
Expression, such conversion are each fallen within the scope of protection of the utility model as multiple types.
Claims (4)
1. a kind of switchboard control circuit, is provided with power input and N number of power output end, in each power output end and electricity
The consistent power control circuit of structure is provided between the input terminal of source, which is provided with breaker (QF) and key switch
(S), the key switch (S) and breaker (QF) are sequentially connected in series between the power input and output terminal, it is characterised in that：
On-off circuit is serially connected between the breaker (QF) and key switch (S), the break-make of the on-off circuit is controlled by controller, should
Controller is connected with communication module, and the controller is communicated by communication module with host computer.
2. switchboard control circuit according to claim 1, it is characterised in that：The controller is provided with the control of N groups power supply
End group, N group power control terminal groups and the on-off circuit correspond, the power control terminal group be provided with separating brake control terminal and
Overhaul control terminal；
The on-off circuit is provided with separating brake voltage comparator (U1) and maintenance voltage comparator (U2), separating brake voltage comparator
(U1) in-phase input end connects the separating brake control terminal, and inverting input string first resistor (R1) connects power supply afterwards, described point
The inverting input of lock voltage comparator (U1) is grounded after also being concatenated with second resistance (R2), after output terminal string 3rd resistor (R3)
The base stage of separating brake triode (T1) is connected, the collector of the separating brake triode (T1) connects power supply, and emitter is sequentially connected in series the 4th electricity
It is grounded after the coil of resistance (R4) and separating brake relay (Q1), the normally closed switch of the separating brake relay (Q1) is serially connected in the open circuit
Between device (QF) and key switch (S)；
The in-phase input end of the maintenance voltage comparator (U2) connects the maintenance control terminal, the 5th electricity of inverting input concatenation
Resistance (R5) connects power supply afterwards, and the inverting input of maintenance voltage comparator (U2) also concatenates the 6th resistance (R6) and is grounded afterwards, described
The output terminal of maintenance voltage comparator (U2) concatenates the base stage that the 7th resistance (R7) connects maintenance triode (T2) afterwards, the maintenance three
The collector of pole pipe (T2) connects power supply, and emitter is grounded after being sequentially connected in series the 8th resistance (R8) and maintenance relay (Q2) coil,
The normally closed switch of the maintenance relay (Q2) is serially connected between the breaker (QF) and key switch (S), the inspection
Repair the normally closed switch of relay (Q2) and the normally closed switch concatenation of the separating brake relay (Q1).
3. switchboard control circuit according to claim 2, it is characterised in that：The normal open switch of the separating brake relay (Q1)
One end connects power input through the key switch (S), and other end concatenation separating brake indicator light (L1) is grounded afterwards；
Normally closed switch and key switch of the normal open switch one end of the maintenance relay (Q2) through the maintenance relay (Q2)
(S) power input is connect, the other end concatenation maintenance indicator light (L2) is grounded afterwards.
4. switchboard control circuit according to claim 3, it is characterised in that：The on-off circuit is provided with 2 electric currents and passes
The electric current of indicator light (L2) is detected by the separating brake indicator light (L1) and overhauled to sensor (N), 2 current sensors (N) respectively,
The signal output part of the current sensor (N) is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721377970.9U CN207303821U (en) | 2017-10-24 | 2017-10-24 | Switchboard control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721377970.9U CN207303821U (en) | 2017-10-24 | 2017-10-24 | Switchboard control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207303821U true CN207303821U (en) | 2018-05-01 |
Family
ID=62272849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721377970.9U Active CN207303821U (en) | 2017-10-24 | 2017-10-24 | Switchboard control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207303821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110046726A (en) * | 2019-04-24 | 2019-07-23 | 广东电网有限责任公司 | A kind of O&M is listed method, system, equipment and storage medium automatically |
-
2017
- 2017-10-24 CN CN201721377970.9U patent/CN207303821U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110046726A (en) * | 2019-04-24 | 2019-07-23 | 广东电网有限责任公司 | A kind of O&M is listed method, system, equipment and storage medium automatically |
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