CN204679587U - Cable fault detector - Google Patents
Cable fault detector Download PDFInfo
- Publication number
- CN204679587U CN204679587U CN201520402952.6U CN201520402952U CN204679587U CN 204679587 U CN204679587 U CN 204679587U CN 201520402952 U CN201520402952 U CN 201520402952U CN 204679587 U CN204679587 U CN 204679587U
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- Prior art keywords
- circuit
- central processing
- processing unit
- cable
- fault detector
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- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 14
- 239000013307 optical fiber Substances 0.000 claims abstract description 6
- 230000003750 conditioning effect Effects 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 238000013024 troubleshooting Methods 0.000 abstract description 2
- 230000004807 localization Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to a kind of cable fault detector, comprise fault measuring circuit, Power arithmetic device, voltage-frequency converter, central processing unit and wireless transmitting unit, fault measuring circuit is connected with Power arithmetic device, voltage-frequency converter and central processing unit successively by optical fiber, failure message is sent to the data acquisition unit of host computer by central processing unit by wireless transmitting unit, described fault measuring circuit comprises zero sequence current measurement circuit and current phasor measurement circuit.Be installed on the cable fault detector in cable distribution box, when cable breaks down, abort situation can be realized and report to the police, greatly shorten trouble shooting time.
Description
Technical field
The utility model relates to a kind of fault test set, particularly relates to a kind of cable fault detector, is particularly useful for underground cable.
Background technology
It is a very important job that localization of fault detects, and when overhead transmission line breaks down, can pass through line walking looking up the fault.And cable is buried in underground, cannot directly check, branched line is a lot of again, and railway superstructures is complicated, and therefore localization of fault is very difficult.
Utility model content
The utility model, for above-mentioned problems of the prior art, provides a kind of cable fault detector, solves the problem of underground cable location difficulty in prior art.
The technical solution of the utility model is as follows:
Cable fault detector comprises fault measuring circuit, Power arithmetic device, voltage-frequency converter, central processing unit and wireless transmitting unit, fault measuring circuit is connected with Power arithmetic device, voltage-frequency converter and central processing unit successively by optical fiber, failure message is sent to the data acquisition unit of host computer by central processing unit by wireless transmitting unit, described fault measuring circuit comprises zero sequence current measurement circuit and current phasor measurement circuit.
Described zero sequence current measurement circuit and current phasor measurement circuit comprise signal conditioning circuit and A/D sample circuit respectively, and the output terminal of signal conditioning circuit connects the input end of A/D sample circuit, and the output terminal of A/D sample circuit connects Power arithmetic device.
Described signal conditioning circuit comprises filter capacitor, full-wave rectifying circuit and protection circuit.
Described A/D sample circuit comprises I/V translation circuit and A/D converter.
The utility model has the advantages of as follows:
Be installed on the cable fault detector in cable distribution box, when cable breaks down, abort situation can be realized and report to the police, greatly shorten trouble shooting time.
Accompanying drawing explanation
Fig. 1 is structural schematic block diagram of the present utility model.
Embodiment
Referring to accompanying drawing, in conjunction with specific embodiments, the utility model is described in detail.
embodiment 1
As shown in Figure 1, cable fault detector comprises fault measuring circuit, Power arithmetic device, voltage-frequency converter, central processing unit and wireless transmitting unit, fault measuring circuit is connected with Power arithmetic device, voltage-frequency converter and central processing unit successively by optical fiber, failure message is sent to the data acquisition unit of host computer by central processing unit by GPRS or optical fiber, described fault measuring circuit comprises zero sequence current measurement circuit and current phasor measurement circuit.Described zero sequence current measurement circuit and current phasor measurement circuit comprise signal conditioning circuit and A/D sample circuit respectively, and the output terminal of signal conditioning circuit connects the input end of A/D sample circuit, and the output terminal of A/D sample circuit connects Power arithmetic device.Described signal conditioning circuit comprises filter capacitor, full-wave rectifying circuit and protection circuit.Described A/D sample circuit comprises I/V translation circuit and A/D converter.
When line failure, metering circuit on fault branch will be triggered after a failure, by optical fiber, alerting signal is sent to Power arithmetic device, voltage-frequency converter is sent to after the conversion of Power arithmetic device, signal is converted to pulse and sends to central processing unit by voltage-frequency converter, luminous indication fault after central processing unit is disposed, its digitally encoded signal is passed through short-distance wireless transmitter unit simultaneously, send to neighbouring data acquisition unit in the mode of radiowave, communication distance is between 0-800m.
The above know-why being specific embodiment of the utility model and using, any based on the equivalent transformation on technical solutions of the utility model basis, all belong within protection domain of the present utility model.
Claims (4)
1. cable fault detector, it is characterized in that comprising fault measuring circuit, Power arithmetic device, voltage-frequency converter, central processing unit and wireless transmitting unit, fault measuring circuit is connected with Power arithmetic device, voltage-frequency converter and central processing unit successively by optical fiber, failure message is sent to the data acquisition unit of host computer by central processing unit by wireless transmitting unit, described fault measuring circuit comprises zero sequence current measurement circuit and current phasor measurement circuit.
2. cable fault detector according to claim 1, it is characterized in that described zero sequence current measurement circuit and current phasor measurement circuit comprise signal conditioning circuit and A/D sample circuit respectively, the output terminal of signal conditioning circuit connects the input end of A/D sample circuit, and the output terminal of A/D sample circuit connects Power arithmetic device.
3. cable fault detector according to claim 2, is characterized in that described signal conditioning circuit comprises filter capacitor, full-wave rectifying circuit and protection circuit.
4. cable fault detector according to claim 2, is characterized in that described A/D sample circuit comprises I/V translation circuit and A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402952.6U CN204679587U (en) | 2015-06-12 | 2015-06-12 | Cable fault detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402952.6U CN204679587U (en) | 2015-06-12 | 2015-06-12 | Cable fault detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204679587U true CN204679587U (en) | 2015-09-30 |
Family
ID=54179270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520402952.6U Active CN204679587U (en) | 2015-06-12 | 2015-06-12 | Cable fault detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204679587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880646A (en) * | 2015-06-12 | 2015-09-02 | 国家电网公司 | Cable fault detector |
-
2015
- 2015-06-12 CN CN201520402952.6U patent/CN204679587U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880646A (en) * | 2015-06-12 | 2015-09-02 | 国家电网公司 | Cable fault detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |