CN207502656U - Switch control circuit disconnection fault positioning device - Google Patents
Switch control circuit disconnection fault positioning device Download PDFInfo
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- CN207502656U CN207502656U CN201721735327.9U CN201721735327U CN207502656U CN 207502656 U CN207502656 U CN 207502656U CN 201721735327 U CN201721735327 U CN 201721735327U CN 207502656 U CN207502656 U CN 207502656U
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- switch control
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- 238000005070 sampling Methods 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000001012 protector Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012905 input function Methods 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Abstract
The utility model discloses a kind of switch control circuit disconnection fault positioning devices, belong to electrical equipment technical field, including starting module, sampling apparatus, controller and display；Starting module one end is connect with protective device, the other end and controller connect, and sampling apparatus input terminal is connect with each node of switch control circuit, output terminal and controller input terminal connect, and controller output end is connect with display.By setting starting module; in the alarm signal for receiving external protector; the automatic harvester that starts is acquired each main node voltage in switch control circuit; master controller finds out voltage according to the voltage of each node and becomes site; and then orient broken position or range; compared to traditional manual detection mode, this programme can timely orient automatically switching circuitry broken string abnormal position.
Description
Technical field
The utility model is related to electrical equipment technical field, more particularly to a kind of switch control circuit disconnection fault positioning dress
It puts.
Background technology
Switchgear in substation carries out division by control loop, and whether control loop is intact to directly affect operation
It can be executed correctly with guarded command.In power equipment actual moving process, caused control loop due to various reasons
Broken string is abnormal to happen occasionally.It needs to ascertain the reason in time after control loop template, if processing may result in instantaneity not in time
Failure reclosing is unsuccessful or permanent fault switch is jumped not open, so as to which fault coverage be caused to expand.
Substation's O＆M pattern is found after control loop template alarm signal by running person on duty or monitoring personnel at present
Notify related service personnel to in-situ processing.The general step of processing control loop template is to first check for control power supply, such as electricity
Source normally measures control loop main node voltage-to-ground successively with multimeter DC voltage shelves again, finds voltage and becomes site, from
And determine fault coverage.This mode has a drawback in that：First, due to using artificial treatment, various odjective causes can be led
Cause troubleshooting not in time；Second is that processing the type failure requirements service personnel is familiar with control loop, to professional skill
It is more demanding.
Utility model content
Control loop template failure can be searched and located automatically automatically the purpose of this utility model is to provide a kind of
Device, timely and effectively determine fault coverage.
In order to achieve the above object, the technical solution adopted in the utility model includes：Starting module, sampling apparatus, controller
And display；Starting module one end is connect with protective device, the other end and controller connect, and sampling apparatus input terminal is controlled with switch
Each node in circuit processed connects, output terminal and controller input terminal connect, and controller output end is connect with display.
Preferably, the starting module includes automatic startup contact and manual actuation of button；Manual actuation of button and control
The universal input of device/output interface connection, automatic one end for starting contact is connect with the protective device, the other end passes through delay
Device is connect with the controller.
Preferably, the sampling apparatus includes voltage collector, collector of switching value and sampling plug-in, voltage acquisition
Device passes sequentially through each node connection, collector of switching value in switch, sampling plug-in and switch control circuit and passes sequentially through switch, adopts
Sample plug-in unit and external switch location assistance contact, DC power supply abnormality alarming contact, control loop template alarm contact portion.
Preferably, controller is microcontroller.
Preferably, the output interface of microcontroller is connect respectively with monitoring device, network interface output interface and the display.
Compared with prior art, there are following technique effects for the utility model：The utility model by setting starting module,
In the alarm signal for receiving external protector, the automatic harvester that starts is to each main node voltage in switch control circuit
Amount is acquired, and master controller finds out voltage according to the voltage of each node and becomes site, and then orient broken position or range,
Compared to traditional manual detection mode, this programme can timely orient automatically switching circuitry broken string abnormal position.
Description of the drawings
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail：
Fig. 1 is a kind of structure diagram of switch control circuit disconnection fault positioning device；
Fig. 2 is a kind of another structure diagram of switch control circuit disconnection fault positioning device；
Fig. 3 is the structure diagram of harvester；
Fig. 4 is the structure diagram of switch control circuit；
Fig. 5 is a kind of flow diagram of switch control circuit disconnection fault positioning device.
Specific embodiment
In order to illustrate further the feature of the utility model, please refer to detailed description below in connection with the utility model with
Attached drawing.Institute's attached drawing is only for reference and purposes of discussion, is not used for limiting the scope of protection of the utility model.
As shown in Figure 1 to Figure 2, present embodiment discloses a kind of switch control circuit disconnection fault positioning device, including opening
Dynamic model block 10, sampling apparatus 20, controller 30 and display 40；10 one end of starting module is connect with protective device, the other end with
Controller 30 connects, and 20 input terminal of sampling apparatus is connect with each node of switch control circuit, 30 input terminal of output terminal and controller
Connection, 30 output terminal of controller are connect with display 40.Wherein, starting module 10 passes through external connection and transforming plant protecting device
Connection, when receiving the alarm signal that protective device is sent out, trigger controller 30 obtains the switch control that sampling apparatus 20 acquires
The voltage of each main node in circuit processed finds out voltage according to the voltage of each node and becomes site, and then orient broken string
Specific location or broken string range.
It should be noted that controller 30 model STM32F103RET6, dominant frequency 72MHZ in the present embodiment, power supply electricity
Source 110V~230V, 50~60HZ of frequency.There are 10 circuit node voltage acquisitions, for detecting broken position, node location
Title can be set；USB interface is used for and PC communicates, and user can be set nodename and is saved in by USB interface
In EEPROM, title is not lost after power down.With 4 way switch amount input functions and No. 1 button input function, examined for starting
It surveys；Human-computer interaction is used for using 12864 crystal displays.
Preferably, starting module 10 includes automatic startup contact and manual actuation of button；Automatic one end for starting contact with
Protective device connection, the other end are connect by delayer with controller 30, and manual actuation of button passes through GPIO interface and microcontroller
Connection.Here delay procedure can be also set in microcontroller, microcontroller is in the triggering for receiving automatic startup contact, delay 60
Second is acquired again.
By setting two kinds of start-up modes, automatic Starting mode opens the present embodiment according to the alarm signal of protective device
It is dynamic, meet substation equipment automation, intelligentized demand.Simultaneously in view of 10KV switching mechanisms in testing position and work
Make that control loop template can be reported in the handoff procedure of position, in order to prevent the error starting in the case of this kind, be connect when starting contact automatically
After the alarm signal for receiving protective device, it is delayed what certain time such as 60 seconds startup harvesters were acquired by delayer
Mode if switch control circuit broken string disappears in 60 seconds, does not start harvester and carries out voltage acquisition.
In addition, in practical operation, can be used it is more structurally sound manually boot mode, operations staff has found that switch controls back
After the break signal of road, directly can show broken position or range by manual actuation of button, can avoid due to the position of the switch with
And error starting caused by non-energy storage reason.
Preferably, as shown in Figure 3 to Figure 4, sampling apparatus 20 includes voltage collector 21, collector of switching value 22 and adopts
Sample plug-in unit 23, voltage collector 21 pass sequentially through control switch 24, sampling plug-in 23 and node each in switch control circuit and connect
It connects, collector of switching value 22 passes sequentially through control switch 24, sampling plug-in 23 and external switch location assistance contact, DC power supply
Abnormality alarming contact, control loop template alarm contact portion.Wherein, voltage collector 21 and collector of switching value 22
It is commercially available device, voltage collector 21 is responsible for the direct current of each monitoring point of acquisition switch control circuit
Pressure, while collector of switching value 22 is set to acquire the position of the switch amount of external auxiliary switch, control loop template alarm startup amount
And the switching values such as direct current abnormality alarming locking.
Specifically, in 20 gatherer process of harvester, if plurality of voltages acquires simultaneously, it will cause DC loop pair
Ground insulation reduces, and even results in relay fail or malfunction.Therefore, harvester uses the side that single channel acquires in turn in the present embodiment
Formula, i.e. each road voltage acquisition channel of off and on successively acquire the mode disconnected all the way all the way, ensure every time only acquisition one
Road voltage, wherein, first, second paths be defaulted as respectively DC power supply just with DC power supply negative voltage acquisition channel.It is logical
The single channel artificial lookup switch control circuit disconnection fault process of acquisition mode simulation in turn is crossed, does not change switch control circuit knot
Structure avoids generating the possibility of parasitic loop.
It should be noted that by acquiring the effect of switching value it is to look only for closing a floodgate back when switch point position in the present embodiment
Road looks only for sub-gate circuit when switch closes position, saves the time of faulty circuit positioning, improves search and orientation efficiency.
Preferably, the output interface of microcontroller is connect with display 40, and microcontroller also passes through output interface and monitoring
Device, the connection of network interface output interface.Broken position or broken string range can be viewed by display 40 and monitoring device.
It should be noted that it is to the course of work principle of the present apparatus with reference to Fig. 4 to Fig. 5：After fault loop is judged,
Voltage acquisition is carried out successively to the loop voltage monitoring point broken down.Collected control supply voltage is analyzed, if U
+=0, U-=0, power loss, report " control power loss in order to control for judgement！" signal.If U+ ≠ 0, U-=0 or U+=0, U- ≠
0, report " direct-current power supply earthing！”.If U+ ≠ 0, U- ≠ 0 acquires each voltage monitoring point voltage from U+ to U- successively, until occurring
Two adjacent monitoring points voltage Un, Un+1 meet Un>0, Un+1<0 condition can determine that trouble point between Un and Un+1.It adopts
After acquisition means acquire each node voltage one time, sampling channel switching relay automatic power down, disconnection is contacted with control loop,
It ensure that control loop safety.
As shown in figure 4, the switch control circuit includes closing circuit and sub-gate circuit, one can be equivalent to by component and section
Point is series at circuit between positive-negative power, and in each component in circuit, position of the switch supervisory relay resistance is relative to other yuan
Device and closure node-resistance are infinity, according to electric resistance partial pressure principle, after switch control circuit is connected, are monitored under normal circumstances
Each node voltage after relay is negative.Broken string circuit position fixing process is illustrated with reference to Fig. 4 as follows：
Assuming that in the case of control power supply is normal, the node between node 3 and node 4 in Fig. 4 blows abnormal cause back
Road is broken, the voltage for measuring each node of U1, U2, U3, U4, U5, U6 successively by starting or manually booting harvester automatically,
It can obtain U1=110V, U2=110V, U3=110V, U4=-110V, U5=-110V, U6=-110V.U3>0, U4<0, prison
It surveys voltage to conjugate between 3 and 4, judgement broken string is happened between 3 and 4.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. a kind of switch control circuit disconnection fault positioning device, it is characterised in that：Including starting module, sampling apparatus, control
Device and display；Starting module one end is connect with protective device, the other end and controller connect, sampling apparatus input terminal and switch
Each node connection of control loop, output terminal and controller input terminal connect, and controller output end is connect with display.
2. switch control circuit disconnection fault positioning device as described in claim 1, it is characterised in that：The starting module packet
Include automatic startup contact and manual actuation of button；The universal input of manual actuation of button and controller/output interface connection, automatically
One end of startup contact is connect with the protective device, the other end is connect by delayer with the controller.
3. switch control circuit disconnection fault positioning device as described in claim 1, it is characterised in that：The sampling apparatus packet
Voltage collector, collector of switching value and sampling plug-in are included, voltage collector passes sequentially through switch, sampling plug-in and switch
Each node connection in control loop, collector of switching value pass sequentially through switch, sampling plug-in respectively with external switch location assistance
Contact, DC power supply abnormality alarming contact, control loop template alarm contact portion.
4. switch control circuit disconnection fault positioning device as described in claim 1, it is characterised in that：The controller is single
Piece machine.
5. switch control circuit disconnection fault positioning device as claimed in claim 4, it is characterised in that：The microcontroller it is defeated
Outgoing interface is connect respectively with monitoring device, network interface output interface and the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721735327.9U CN207502656U (en) | 2017-12-13 | 2017-12-13 | Switch control circuit disconnection fault positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721735327.9U CN207502656U (en) | 2017-12-13 | 2017-12-13 | Switch control circuit disconnection fault positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502656U true CN207502656U (en) | 2018-06-15 |
Family
ID=62509508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721735327.9U Active CN207502656U (en) | 2017-12-13 | 2017-12-13 | Switch control circuit disconnection fault positioning device |
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| Country | Link |
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| CN (1) | CN207502656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580011A (en) * | 2020-04-28 | 2020-08-25 | 深圳供电局有限公司 | Method, device and equipment for locating disconnection fault of circuit breaker control circuit |
| CN112858899A (en) * | 2021-01-11 | 2021-05-28 | 合肥开关厂有限公司 | Method for monitoring disconnection of control loop of explosion-proof switch |
-
2017
- 2017-12-13 CN CN201721735327.9U patent/CN207502656U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580011A (en) * | 2020-04-28 | 2020-08-25 | 深圳供电局有限公司 | Method, device and equipment for locating disconnection fault of circuit breaker control circuit |
| CN112858899A (en) * | 2021-01-11 | 2021-05-28 | 合肥开关厂有限公司 | Method for monitoring disconnection of control loop of explosion-proof switch |
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