CN203870190U - Fiber-style grounding and short-circuit fault indicator - Google Patents
Fiber-style grounding and short-circuit fault indicator Download PDFInfo
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- CN203870190U CN203870190U CN201420223157.6U CN201420223157U CN203870190U CN 203870190 U CN203870190 U CN 203870190U CN 201420223157 U CN201420223157 U CN 201420223157U CN 203870190 U CN203870190 U CN 203870190U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 239000013307 optical fiber Substances 0.000 claims description 9
- 230000001939 inductive effect Effects 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000001629 suppression Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000007257 malfunction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
Provided is a fiber-style grounding and short-circuit fault indicator which is good in anti-interference performance, not liable to false alarm, and suitable for remote and real-time fault monitoring. The fiber-style grounding and short-circuit fault indicator is composed of a controller and sensors. The sensors comprise a short-circuit fault sensor (2) and a grounding fault sensor (3) each of which includes an induction coil and an electro-optic converting circuit. The controller comprises a photoelectric conversion unit (4), a control unit (5), a fault indicating unit (6), an intellectualized unit (7), and a power supply unit (8). The photoelectric conversion unit is connected with the control unit. The control unit is connected with the fault indicating unit, the intellectualized unit, and the power supply unit. The short-circuit fault sensor and the grounding fault sensor are connected with the photoelectric conversion unit through fibers. The fiber-style grounding and short-circuit fault indicator is used for indicating grounding and short-circuit faults of a distribution network.
Description
Technical field
The utility model relates to power equipment, and the particularly fault monitoring device in distribution network system, is specifically related to ground connection and display device for short circuit.
Background technology
Ground connection and display device for short circuit are that supporting loop networks switch, cable branch box, the case being arranged in distribution network system becomes upper, are used to indicate the short circuit of respective cable section and a kind of real-time monitoring device of singlephase earth fault.When line failure, staff can, by the warning instruction of indicator, determine rapidly fault section, and find out trouble spot.Between the controller of tradition fault detector and sensor, the copper conductors that adopt carry out signal transmission more, and interference free performance is poor, often occurs false alarm.In addition, traditional this fault detector does not adapt to remote real-time monitoring, is unfavorable for realizing in time and fast processing of fault.
Summary of the invention
The utility model will solve ground connection traditional in distribution system and short trouble indicating device poor anti jamming capability, easily there is false alarm, and be not suitable for the problem of remote real-time monitoring, a kind of optical-fiber type ground connection of the present utility model and display device for short circuit are provided for this reason, this fault detector strong anti-interference performance, be not prone to false alarm, and be suitable for fault remote real-time monitoring.
For addressing the above problem, the technical solution adopted in the utility model is made up of controller and sensor, described sensor is short trouble sensor and ground fault sensor, its special character is that described sensor has inductive coil and electro-optical conversion circuit, described controller has photoelectric conversion unit, control module, indicating fault unit, intelligent unit and power supply unit, described photoelectric conversion unit is connected with control module, control module and indicating fault unit, intelligent unit is connected with power supply unit, described short trouble sensor is connected with photoelectric conversion unit by optical fiber respectively with ground fault sensor.
Below in conjunction with the embodiment of accompanying drawing, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is grounding sensor in the utility model and the photoelectric switching circuit structure principle chart of short trouble sensor;
Fig. 3 is the photoelectric conversion unit structure principle chart of the controller in the utility model;
Fig. 4 is the control module structure principle chart of the controller in the utility model.
Embodiment
Optical-fiber type ground connection of the present utility model and display device for short circuit, formed by controller and sensor, described sensor is short trouble sensor 2 and ground fault sensor 3, described sensor has inductive coil and electro-optical conversion circuit, described controller 1 has photoelectric conversion unit 4, control module 5, indicating fault unit 6, intelligent unit 7 and power supply unit 8, described photoelectric conversion unit is connected with control module, control module and indicating fault unit, intelligent unit is connected with power supply unit, described short trouble sensor is connected with photoelectric conversion unit by optical fiber respectively with ground fault sensor.Fig. 1 represents structured flowchart of the present utility model.
In the time that test line has short circuit or earth fault, short trouble sensor 2 or ground fault sensor 3 is inner generates failure messages, and by failure message by Optical Fiber Transmission to controller 1 photoelectric conversion unit 4; Photoelectric conversion unit converts the light signal receiving electric signal to and is transferred to control module 5; Control module handling failure information, and control indicating fault unit 6 and show on the spot fault; Control module real-time and intelligent unit communications, can send to warning message remote monitoring equipment, and can receive reset command; Power supply unit 8 is controller power supply, and has battery electric quantity measuring ability.
Short trouble sensor 2 in the utility model and ground fault sensor 1 comprise inductive coil and electro-optical conversion circuit two parts.Inductive coil is homemade little CT, and its no-load voltage ratio is according to different current class differences.Electro-optical conversion circuit schematic diagram as shown in Figure 2.The AC signal that inductive coil senses, after adjustable resistance R1, is injected into rectifier bridge DB1; After rectification, filtering, give infrared-emitting diode Dk1 power supply.In the time that AC signal is enough strong, Dk1 is luminous, produces failure message.The wherein 2W resistance R 1 flow point piezoresistance that is limited; D1 is Transient Suppression Diode, can suppress the transient overvoltage of AC signal; D2 is voltage stabilizing diode, ensures that DC voltage can not exceed limit value; R2 is current-limiting resistance, controls the luminous intensity of light emitting diode; Regulate the resistance of R1 and R2, can make ground connection or the short trouble of the different current classes of Sensor monitoring.
The schematic diagram of photoelectric conversion unit 4 as shown in Figure 3.Wherein phototriode Q0 is for receiving the light signal of ground fault sensor.In the time that light signal is enough strong, Q0 conducting, PL0 place is high level, this high level, after build-out resistor R19, is directly connected to the universal input output pin (network code name is PHOTO_L0) of CPU; C5 and R19 form low-pass filter simultaneously, can cross filtering high-frequency interferencing signal; 200k Ohmage R10, its working current is no more than 18uA, is conducive to improve the serviceable life of battery.Q1, Q2, Q3 are respectively used to receive A, B, C three phase short circuit fault sensor signal, and its principle of work is identical with described Q0's.This photoelectric switching circuit is simple in structure, components and parts are few, perfect in shape and function, anti-interference are good, can simplify PCB layout, reduces costs, and is convenient to safeguard.
Control module 5 circuit theory diagrams as shown in Figure 4.Control module adopts " MC9S08QG8 " chip, and its pin 13,14,14,16 is for receiving photoelectric conversion unit signal after treatment; Pin 9,10,11,12 drives chip for connecting indicating fault LED and relay; Pin 7,8 connects toggle switch, and the time of automatically reseting can be set; Pin 6 connects reset key; Pin 5 connects battery electric quantity detection chip.
Principal feature of the present utility model:
1, adopt Optical Fiber Transmission failure message, improve antijamming capability;
2, adopt the MC9S08QG8 of low-power consumption as controlling CPU, improve battery;
3, adopt modular design, be convenient to operation maintenance;
4, there is the deixises such as short trouble, earth fault, battery electric quantity be low;
5, failure message can be uploaded to remote monitoring equipment, and the region at indication fault place and particular location, to guide track walker determine rapidly fault section and find out trouble spot;
6, have that fault " automatically resets " on the spot, " hand-reset " and " rem ote reset " function, meet different places requirement;
7, there is self-checking function.
Operation instructions:
Fault detector of the present utility model has fault memory function, in the time fault being detected, and relay closes, corresponding pilot lamp fast blink; When after trouble shooting, corresponding pilot lamp slowly glimmers, and relay is kept closed.After trouble shooting, malfunction indicator lamp and relay by the following method can reset.
1, on the spot " automatically reset "
There are 2 toggle switchs controller inside, automatically resets the time for arranging.Toggle switch is pressed and is represented 1, does not press and represents 0.Therefore four kinds of different reset times of 2 toggle switch definables.In the time that reach reset time, controller automatic distinguishing malfunction indicator lamp and reset relay.
2, on the spot " hand-reset "
On controller panel, there is " reset " button, press reset key and be no more than 1s, controller reset malfunction indicator lamp and relay.
3, rem ote reset
Controller has reset connection terminal, can be connected to remote monitoring equipment.When receiving after rem ote reset signal, controller reset malfunction indicator lamp and relay.
This fault detector also has self-checking function.There is no fault and all faults under reset mode, " reset " button of pressing on controller panel exceedes 1.5s, enters self-checking function.Now, all flicker of fault indicating lamps, all relay closes.Can reset by any one in above-mentioned three kinds of repositioning methods.
Claims (3)
1. optical-fiber type ground connection and display device for short circuit, formed by controller and sensor, described sensor is short trouble sensor (2) and ground fault sensor (3), it is characterized in that described sensor has inductive coil and electro-optical conversion circuit, described controller has photoelectric conversion unit (4), control module (5), indicating fault unit (6), intellectuality unit (7) and power supply unit (8), described photoelectric conversion unit is connected with control module, control module and indicating fault unit, intelligent unit is connected with power supply unit, described short trouble sensor is connected with photoelectric conversion unit by optical fiber respectively with ground fault sensor.
2. fault detector as claimed in claim 1, the photoelectric switching circuit that it is characterized in that described sensor is provided with rectifier bridge DB1, the ac input end of rectifier bridge is connected with Transient Suppression Diode D1, this ac input end is also connected with described sense coil, and the DC output end of rectifier bridge is connected with infrarede emitting diode Dk1, voltage stabilizing diode D2 and capacitor C 1.
3. fault detector as claimed in claim 1 or 2, it is characterized in that described photoelectric conversion unit is provided with the phototriode Q0 of the light signal for receiving ground fault sensor, in the time that light signal is enough strong, Q0 conducting, PL0 place is high level, this high level, after build-out resistor R19, is directly connected to the universal input output pin of CPU; Described photoelectric conversion unit is also provided with phototriode Q1, phototriode Q2 and phototriode Q3, is respectively used to receive A, B, C three phase short circuit fault sensor signal, and its principle of work is identical with described Q0's.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420223157.6U CN203870190U (en) | 2014-04-30 | 2014-04-30 | Fiber-style grounding and short-circuit fault indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420223157.6U CN203870190U (en) | 2014-04-30 | 2014-04-30 | Fiber-style grounding and short-circuit fault indicator |
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| Publication Number | Publication Date |
|---|---|
| CN203870190U true CN203870190U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420223157.6U Active CN203870190U (en) | 2014-04-30 | 2014-04-30 | Fiber-style grounding and short-circuit fault indicator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388381A (en) * | 2015-12-10 | 2016-03-09 | 国网北京市电力公司 | Power supply state monitoring system |
| CN106291212A (en) * | 2015-05-29 | 2017-01-04 | 梁克标 | A kind of Novel fault indicator |
| CN107272525A (en) * | 2017-08-16 | 2017-10-20 | 杭州大有科技发展有限公司 | A kind of fault detector |
| CN107328491A (en) * | 2017-08-16 | 2017-11-07 | 杭州大有科技发展有限公司 | A kind of temperature sensor for high-tension line |
| CN107329036A (en) * | 2017-08-16 | 2017-11-07 | 杭州大有科技发展有限公司 | A kind of short-circuit sensor for high-tension line |
| CN110914643A (en) * | 2017-08-15 | 2020-03-24 | 罗伯特·博世有限公司 | Control device with a circuit for short-circuit protection of a ground line and a sensor, and method for short-circuit protection of a ground line and a sensor |
-
2014
- 2014-04-30 CN CN201420223157.6U patent/CN203870190U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291212A (en) * | 2015-05-29 | 2017-01-04 | 梁克标 | A kind of Novel fault indicator |
| CN105388381A (en) * | 2015-12-10 | 2016-03-09 | 国网北京市电力公司 | Power supply state monitoring system |
| CN105388381B (en) * | 2015-12-10 | 2019-06-21 | 国网北京市电力公司 | The monitoring system of power supply state |
| CN110914643A (en) * | 2017-08-15 | 2020-03-24 | 罗伯特·博世有限公司 | Control device with a circuit for short-circuit protection of a ground line and a sensor, and method for short-circuit protection of a ground line and a sensor |
| CN107272525A (en) * | 2017-08-16 | 2017-10-20 | 杭州大有科技发展有限公司 | A kind of fault detector |
| CN107328491A (en) * | 2017-08-16 | 2017-11-07 | 杭州大有科技发展有限公司 | A kind of temperature sensor for high-tension line |
| CN107329036A (en) * | 2017-08-16 | 2017-11-07 | 杭州大有科技发展有限公司 | A kind of short-circuit sensor for high-tension line |
| CN107329036B (en) * | 2017-08-16 | 2019-08-06 | 浙江大有实业有限公司 | A kind of short-circuit sensor for high-tension line |
| CN107272525B (en) * | 2017-08-16 | 2019-10-18 | 浙江大有实业有限公司 | A kind of fault detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180831 Address after: 310000 No. 11 street, Hangzhou economic and Technological Development Zone, Zhejiang 91 Patentee after: Hangzhou Electric Power Equipment Manufacture Co., Ltd. Address before: 311215 Ningyuan Road, Xiaoshan economic and Technological Development Zone, Hangzhou, Zhejiang 90 Patentee before: Hangzhou Xinmei Complete Electric Appliance Manufacturing Co., Ltd. |
|
| TR01 | Transfer of patent right |