CN206161717U - Utility tunnel power cable discharge current monitoring devices - Google Patents
Utility tunnel power cable discharge current monitoring devices Download PDFInfo
- Publication number
- CN206161717U CN206161717U CN201621131165.3U CN201621131165U CN206161717U CN 206161717 U CN206161717 U CN 206161717U CN 201621131165 U CN201621131165 U CN 201621131165U CN 206161717 U CN206161717 U CN 206161717U
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- power cable
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000003750 conditioning effect Effects 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims description 31
- 238000001914 filtration Methods 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000012634 fragment Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an utility tunnel power cable discharge current monitoring devices, include: current transformer, signal conditioning circuit, cable ask for power supply unit, instantaneous high voltage protection circuit, alarm device, LCD display screen, wireless communication module and controller, the current transformer input sets up on the power cable ground discharge cable, and the current transformer output is connected with signal conditioning circuit, signal conditioning circuit, cable are asked for power supply unit, instantaneous high voltage protection circuit, alarm device, LCD display screen, wireless communication module and are connected with the controller respectively. The utility model discloses real -time supervision discharge current, if discharge current is unusual, then controller control and alarm devices reports to the police to pass through wireless communication module sent with alarm signal and give remote terminal, make things convenient for the staff in time to discover and seek the fault point.
Description
Technical field
This utility model is related to power cable monitoring device, and in particular to a kind of monitoring power cable discharge current size
Monitoring device.
Background technology
In high voltage power cable operation, protective metal shell electromagnetic induction produces electric charge, needs to be released using earth cable
Fall, if releasing not in time, be easily caused the accidents such as fire, detonation.At present substantially without effective power cable sheath electric discharge electricity
Stream monitoring device, cause can not orientation discharge trouble point in time, there is very big potential safety hazard.
The content of the invention
To solve the above problems, this utility model provides a kind of real-time monitoring power cable discharge scenario and fault alarm
Monitoring device.
The technical solution of the utility model is：A kind of pipe gallery power cable discharge current monitoring device, including：Electric current
Transformer, signal conditioning circuit, cable are asked for electric supply installation, instantaneous high pressure protection circuit, alarm device, LCD display, wireless
Communication module and controller；
Current transformer input is arranged on power cable over the ground on discharge cable, and current transformer outfan is adjusted with signal
Reason circuit connection；The signal conditioning circuit, cable ask for electric supply installation, instantaneous high pressure protection circuit, alarm device, LCD show
Display screen, wireless communication module are connected respectively with controller；
Cable ask for electric supply installation including rectangle power taking iron core, switching relay, switching control relay circuit, at electric current
Reason circuit；The input winding power cable of the rectangle power taking iron core, the outfan winding secondary of the rectangle power taking iron core
Coil, secondary coil is connected with current processing circuits, and current processing circuits are connected with controller；The secondary coil has two to take out
Head, switches the switching that control relay circuit control switching relay is realized between two taps；
Switching control relay circuit includes stabilivolt D1, resistance R1, transistor Q1, electricity taking coil；The electricity taking coil
Rectangle power taking iron core outfan is wrapped in, electricity taking coil winds winding number of turn phase of the number of turn with bus on rectangle power taking iron core
Together；
The stabilivolt D1, resistance R1 series connection is followed by electricity taking coil two ends, and stabilivolt D1 positive poles connect with resistance R1 one end
Connect, stabilivolt D1 negative poles are connected with electricity taking coil one end；
Node connection between transistor Q1 base stages and stabilivolt D1, resistance R1, transistor Q1 colelctor electrodes and switching relay
Coil one end connection of device, the coil other end for switching relay is connected with the negative pole of stabilivolt D1, the emitter stage of transistor Q1
It is connected with the node between resistance R1, electricity taking coil.
Further, current processing circuits include current rectifying and wave filtering circuit and stable state protection circuit；The secondary coil with it is whole
Stream filter circuit connection, current rectifying and wave filtering circuit is connected with stable state protection circuit, and stable state protection circuit is connected with controller.
Further, polymer self- recoverage fuse, rectifying and wave-filtering are in series between secondary coil and current rectifying and wave filtering circuit
The input side of circuit is parallel with transient voltage suppresser.
Further, instantaneous high pressure protection circuit, the instantaneous high pressure protection circuit includes shell fragment T, varistor R2, electricity
Resistance R3, resistance R4, rectifier bridge U1, filter capacitor C1, optocoupler U2 and display lamp L2, the shell fragment T, varistor R2 and power supply string
Connection, the resistance R3 connects and in parallel with the varistor R2 with rectifier bridge U1, the filter capacitor C1 and the rectifier bridge
U1 connects, and the resistance R4, display lamp L2 and optocoupler U2 are in parallel with the filter capacitor C1.
Further, alarm device includes buzzer and alarm lamp.
Further, wireless communication module is WiFi module.
The pipe gallery power cable discharge current monitoring device that this utility model is provided, current transformer is enclosed within electric power electricity
Cable on discharge cable, induces a small current signal being directly proportional to discharge current over the ground, and Jing signal conditioning circuits are transferred to control
Device processed, controller calculates the size of power cable discharge current, if discharge current exception, controller control alarm device report
It is alert, and alarm signal is sent to into remote terminal by wireless communication module, facilitate staff to find and search failure in time
Point, while controller in real time shows discharge current situation on LCD display, facilitates staff's real time inspection electric discharge electricity
Stream.In addition, this device is asked for electric supply installation using cable, power taking is convenient, energy saving.It is additionally provided with instantaneous high pressure protection electricity
Road, prevents the instantaneous high pressures such as thunder and lightning from causing security incident.
Description of the drawings
Fig. 1 is this utility model specific embodiment structural representation.
Fig. 2 is switching control relay circuit schematic diagram.
Fig. 3 is instantaneous high pressure protection circuit schematic diagram.
In figure, 1 power cable, 2 power cables discharge cable over the ground, 3 current transformers, 4 rectangle power taking iron cores, 5 secondary
Coil, 6 electricity taking coils, 7 signal conditioning circuits, 8LCD display screens, 9 instantaneous high pressure protection circuits, 10 controllers, 11 switching relays
Device control circuit, 12 current rectifying and wave filtering circuits, 13 stable state protection circuits, 14 alarm devices, 15 wireless communication modules, R1, R3, R4 are electric
Resistance, R2 varistors, K1 switching relays, Q1 transistors, D1 stabilivolts, U1 rectifier bridges, U2 optocouplers, C1 filter capacitors, L2 refers to
Show lamp, T shell fragments.
Specific embodiment
Below in conjunction with the accompanying drawings and by specific embodiment the utility model is elaborated, and following examples are to this
The explanation of utility model, and this utility model is not limited to implementation below.
As shown in figure 1, this utility model includes that current transformer 3, signal conditioning circuit 7, cable are asked for electric supply installation, wink
When high tension protection circuit 9, alarm device 14, LCD display 8, wireless communication module 15 and controller 10.
The input of current transformer 3 is arranged on power cable over the ground on discharge cable 2, the outfan of current transformer 3 and letter
Number modulate circuit 7 connects；Signal conditioning circuit 7, cable ask for electric supply installation, instantaneous high pressure protection circuit 9, alarm device 14,
LCD display 8, wireless communication module 15 are connected respectively with controller 10.Alarm device 14 includes buzzer and alarm lamp, wirelessly
Communication module 15 is WiFi module.
Cable ask for electric supply installation including rectangle power taking iron core 4, switching relay K1, switching control relay circuit 11,
Current processing circuits；The input winding power cable 1 of rectangle power taking iron core 4, the outfan winding secondary of rectangle power taking iron core 4
Coil 5, secondary coil 5 is connected with current processing circuits, and current processing circuits are connected with controller 10；Secondary coil 5 has two
Tap, switches the switching that the control switching relay K1 of control relay circuit 11 is realized between two taps.When the electric current of power cable 1
When excessive, the switching control switching relay K1 of control relay circuit 11 makes secondary coil 5 be switched to voltage tap.
Current processing circuits include current rectifying and wave filtering circuit 12 and stable state protection circuit 13；Secondary coil 5 and rectifying and wave-filtering electricity
Road 12 connects, and current rectifying and wave filtering circuit 12 is connected with stable state protection circuit 13, and stable state protection circuit 13 is connected with controller 10.Secondary
Polymer self- recoverage fuse is in series between coil 5 and current rectifying and wave filtering circuit 12, the input side of current rectifying and wave filtering circuit 12 is in parallel
There is transient voltage suppresser, it is to avoid circuit is damaged in overcurrent or overvoltage.
As shown in Fig. 2 switching control relay circuit 11 includes stabilivolt D1, resistance R1, transistor Q1, electricity taking coil 6；
Electricity taking coil 6 is wrapped in the outfan of rectangle power taking iron core 4, and the winding number of turn of electricity taking coil 6 is with bus on rectangle power taking iron core 4
The winding number of turn is identical.Stabilivolt D1, resistance R1 series connection is followed by the two ends of electricity taking coil 6, stabilivolt D1 positive poles and resistance R1 one end
Connection, stabilivolt D1 negative poles are connected with the one end of electricity taking coil 6；Node between transistor Q1 base stages and stabilivolt D1, resistance R1
Connection, transistor Q1 colelctor electrodes with switching relay K1 coil one end be connected, switching relay K1 the coil other end with it is steady
The negative pole connection of pressure pipe D1, the emitter stage of transistor Q1 and the node between resistance R1, electricity taking coil 6 connect.
As shown in figure 3, instantaneous high pressure protection circuit 9, instantaneous high pressure protection circuit 9 includes shell fragment T, varistor R2, electricity
Resistance R3, resistance R4, rectifier bridge U1, filter capacitor C1, optocoupler U2 and display lamp L2, shell fragment T, varistor R2 and power sources in series,
Resistance R3 connects and in parallel with varistor R2 with rectifier bridge U1, and filter capacitor C1 connects with rectifier bridge U1, resistance R4, instruction
Lamp L2 and optocoupler U2 are in parallel with filter capacitor C1.
When the instantaneous high pressures such as thunder and lightning are invaded from feed cable, varistor R2 and shell fragment T actions, pressure-sensitive electricity are caused first
Resistance R2 produces pressure limiting effect, limits lightning impulse voltage and rises, and protects rear class equipment；When varistor R2 be subjected to it is excessive thunderbolt and
Impaired adstante febre, by the soldered structure of shell fragment T, can be rapidly separated circuit, it is ensured that instantaneous high pressure protection circuit 9 is only
Heat；And circuit rear class is shown by display lamp L2 and is reported after resistance R3 blood pressure lowerings, rectifier bridge U1 rectifications and filter capacitor C1 filtering
It is alert, it is also turned on the output of optocoupler U2 normal signals；Extinguish when shell fragment T actions disconnect rear indicator light L2, optocoupler U2 outputs disconnect, with
Just the working condition of instantaneous high pressure protection circuit 9 is indicated；The reliability that shell fragment T departs from circuit is high, does not result in security incident.
The above is only preferred implementation of the present utility model, it should be pointed out that：For the ordinary skill people of the art
For member, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as protection domain of the present utility model.
Claims (6)
1. a kind of pipe gallery power cable discharge current monitoring device, it is characterised in that include：Current transformer, signal are adjusted
Reason circuit, cable are asked for electric supply installation, instantaneous high pressure protection circuit, alarm device, LCD display, wireless communication module and control
Device processed；
Current transformer input is arranged on power cable over the ground on discharge cable, current transformer outfan and signal condition electricity
Road connects；The signal conditioning circuit, cable ask for electric supply installation, instantaneous high pressure protection circuit, alarm device, LCD display,
Wireless communication module is connected respectively with controller；
Cable asks for electric supply installation including rectangle power taking iron core, switching relay, switching control relay circuit, current processing electricity
Road；The input winding power cable of the rectangle power taking iron core, the outfan winding secondary coil of the rectangle power taking iron core,
Secondary coil is connected with current processing circuits, and current processing circuits are connected with controller；The secondary coil has two taps, cuts
Change the switching that control relay circuit control switching relay is realized between two taps；
Switching control relay circuit includes stabilivolt D1, resistance R1, transistor Q1, electricity taking coil；The electricity taking coil winding
In rectangle power taking iron core outfan, it is identical that electricity taking coil winds the winding number of turn of the number of turn with bus on rectangle power taking iron core；
The stabilivolt D1, resistance R1 series connection is followed by electricity taking coil two ends, and stabilivolt D1 positive poles are connected with resistance R1 one end, surely
Pressure pipe D1 negative pole is connected with electricity taking coil one end；
Node connection between transistor Q1 base stages and stabilivolt D1, resistance R1, transistor Q1 colelctor electrodes and switching relay
Coil one end connects, and the coil other end for switching relay is connected with the negative pole of stabilivolt D1, emitter stage and the electricity of transistor Q1
Node connection between resistance R1, electricity taking coil.
2. pipe gallery power cable discharge current monitoring device according to claim 1, it is characterised in that current processing
Circuit includes current rectifying and wave filtering circuit and stable state protection circuit；The secondary coil is connected with current rectifying and wave filtering circuit, rectifying and wave-filtering electricity
Road is connected with stable state protection circuit, and stable state protection circuit is connected with controller.
3. pipe gallery power cable discharge current monitoring device according to claim 2, it is characterised in that secondary coil
Polymer self- recoverage fuse is in series between current rectifying and wave filtering circuit, the input side of current rectifying and wave filtering circuit is parallel with instantaneous voltage
Suppressor.
4. pipe gallery power cable discharge current monitoring device according to claim 1, it is characterised in that instantaneous high pressure
Protection circuit, the instantaneous high pressure protection circuit includes shell fragment T, varistor R2, resistance R3, resistance R4, rectifier bridge U1, filtering
Electric capacity C1, optocoupler U2 and display lamp L2, the shell fragment T, varistor R2 and power sources in series, the resistance R3 and rectifier bridge U1 goes here and there
Join and in parallel with the varistor R2, the filter capacitor C1 connects with the rectifier bridge U1, the resistance R4, display lamp
L2 and optocoupler U2 is in parallel with the filter capacitor C1.
5. the pipe gallery power cable discharge current monitoring device according to any one of claim 1-4, it is characterised in that
Alarm device includes buzzer and alarm lamp.
6. the pipe gallery power cable discharge current monitoring device according to any one of claim 1-4, it is characterised in that
Wireless communication module is WiFi module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621131165.3U CN206161717U (en) | 2016-10-18 | 2016-10-18 | Utility tunnel power cable discharge current monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621131165.3U CN206161717U (en) | 2016-10-18 | 2016-10-18 | Utility tunnel power cable discharge current monitoring devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206161717U true CN206161717U (en) | 2017-05-10 |
Family
ID=58653764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621131165.3U Expired - Fee Related CN206161717U (en) | 2016-10-18 | 2016-10-18 | Utility tunnel power cable discharge current monitoring devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206161717U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188175A (en) * | 2018-09-27 | 2019-01-11 | 国网辽宁省电力有限公司大连供电公司 | Cable surface magnetic leakage and mechanical wave combined failure detecting and warning system |
| CN115480139A (en) * | 2022-11-15 | 2022-12-16 | 国网山东省电力公司胶州市供电公司 | Transformer substation cable insulation state detection device and method |
-
2016
- 2016-10-18 CN CN201621131165.3U patent/CN206161717U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188175A (en) * | 2018-09-27 | 2019-01-11 | 国网辽宁省电力有限公司大连供电公司 | Cable surface magnetic leakage and mechanical wave combined failure detecting and warning system |
| CN109188175B (en) * | 2018-09-27 | 2023-09-08 | 国网辽宁省电力有限公司大连供电公司 | Cable surface magnetic leakage and mechanical wave composite fault detection alarm system |
| CN115480139A (en) * | 2022-11-15 | 2022-12-16 | 国网山东省电力公司胶州市供电公司 | Transformer substation cable insulation state detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 |