CN203929129U - Cable temperature and current-carrying capacity on-line monitoring system - Google Patents
Cable temperature and current-carrying capacity on-line monitoring system Download PDFInfo
- Publication number
- CN203929129U CN203929129U CN201420367940.XU CN201420367940U CN203929129U CN 203929129 U CN203929129 U CN 203929129U CN 201420367940 U CN201420367940 U CN 201420367940U CN 203929129 U CN203929129 U CN 203929129U
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- Prior art keywords
- current
- cable
- temperature
- current detector
- carrying capacity
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- Expired - Lifetime
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a cable temperature and current-carrying capacity on-line monitoring system, which comprises a current detection device, a temperature detection device, an acquisition terminal and an industrial personal computer; the current detection device comprises a first current detector (2) on each single-phase wire (1) in the cable being monitored and a second current detector (4) on the cable bus (3) being monitored; the temperature detection device is fixedly arranged on the cable to be monitored; the first current detector (2), the second current detector (4) and the temperature detection device are respectively connected with the acquisition terminal through connectors, and the acquisition terminal is connected with the industrial personal computer through a remote communication mode. The utility model discloses can monitor the temperature and the current-carrying capacity of cable during operation to can realize that the cable fault point is fixed a position, and measurement accuracy is high, and the interference killing feature is strong.
Description
Technical field
The utility model relates to a kind of on-line monitoring system, particularly relates to a kind of cable temperature and current-carrying capacity on-line monitoring system.
Background technology
Cable, is the cable by several or at least two stranded type ropes that form of every group of wire of several groups of wires, mutually insulated between every group of wire, and often round Yi Gen center, be twisted into, whole outside is surrounded by the overlayer of insulation.Be mainly used in electronic system, the electric wire product that electronic system adopts mainly contains aerial bare electric wire, bus-bar (bus), power cable (plastic ca-ble, oilpaper power cable (substantially being replaced by plastic power cable), rubber cover cable, aerial insulated cable), branch cable (replacing part bus), electromagnetic wire and power equipment electrical equipment electric wire etc.
Cable in use, need to carry out line arrangement to its circuit, and need to regularly safeguard and detect, and it mainly safeguards current-carrying capacity and temperature while comprising cable work with detection factors, thereby guarantees the normal work of cable.Traditional cable detection mode is artificial inspection, and testing staff is regular or irregular cable is safeguarded and detected.Aforesaid way can be to a certain extent the normal operating conditions of assurance cable, still, testing staff's testing amount, and can not determine fast and effectively the fault position of cable, thereby cause the time between overhauls(TBO) long, testing staff's workload is large.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and temperature and current-carrying capacity when a kind of can work to cable is provided are monitored, and can realize cable temperature and the current-carrying capacity on-line monitoring system of cable fault point location.
The purpose of this utility model is achieved through the following technical solutions: cable temperature and current-carrying capacity on-line monitoring system, and it comprises current sensing means, temperature-detecting device, acquisition terminal and industrial computer; Described current sensing means comprises the first current detector on each the single-phase electric wire that is arranged in monitored cable and is positioned at the second current detector on monitored cable bus; Described temperature-detecting device is fixedly mounted on monitored cable; The first current detector, the second current detector and temperature-detecting device are connected with acquisition terminal by connector respectively, and acquisition terminal is connected with industrial computer by telecommunication mode.
Described the first current detector and the second current detector include Luo-coil, amplifier and converter, the output terminal of Luo-coil is connected with the input end of amplifier by anti-electromagnetic interference (EMI) absorbing circuit, between the output terminal of amplifier and the input end of converter, by A/D change-over circuit, be connected, the output terminal of converter is connected with the input end of connector.
Between described connector and acquisition terminal, by RS485 bus, be connected.
Compare with traditional manual inspection mode, the utlity model has following beneficial effect:
1) by current sensing means and temperature-detecting device, can effectively to the electric current of cable and temperature, detect, and by telecommunication, be transferred to industrial computer by acquisition terminal, thereby realize the on-line monitoring of cable temperature and current-carrying capacity;
2) current sensing means and temperature-detecting device are transferred to industrial computer by the current value detecting and temperature value by connector and acquisition terminal, monitor staff is to receiving current value and temperature value is analyzed, thereby find trouble spot, solved by testing staff and patrolled and examined and find Method of Cable Trouble Point, the workload that has reduced testing staff, has shortened the time between overhauls(TBO);
3) current detector adopts Luo-coil and anti-electromagnetic interference (EMI) absorbing circuit structure, thereby has improved the measuring accuracy of current sensing means and the antijamming capability of current sensing means.
Accompanying drawing explanation
Fig. 1 is the johning knot composition of current sensing means of the present utility model and monitored cable;
Fig. 2 is theory structure block diagram of the present utility model;
Fig. 3 is the structural representation of current detector of the present utility model;
In figure, the single-phase electric wire of 1-; 2-the first current detector, 3-cable bus, 4-the second current detector.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As illustrated in fig. 1 and 2, cable temperature and current-carrying capacity on-line monitoring system, it comprises current sensing means, a plurality of temperature-detecting device, acquisition terminal and industrial computer; Described current sensing means comprises the first current detector 2 on each the single-phase electric wire 1 that is arranged in monitored cable and is positioned at the second current detector 4 on monitored cable bus 3; Described temperature-detecting device is fixedly mounted on monitored cable; The first current detector 2, the second current detector 4 are connected with acquisition terminal by connector respectively with temperature-detecting device, and acquisition terminal is connected with industrial computer by telecommunication mode (as GPRS telecommunication).
As shown in Figure 3, described the first current detector 2 and the second current detector 4 include Luo-coil, amplifier and converter, the output terminal of Luo-coil is connected with the input end of amplifier by anti-electromagnetic interference (EMI) absorbing circuit, between the output terminal of amplifier and the input end of converter, by A/D change-over circuit, be connected, the output terminal of converter is connected with the input end of connector.
Described temperature sensing device can adopt known digital temperature sensor, as DS18B20, QAH11.1.
Between described connector and acquisition terminal, by RS485 bus, be connected.
Claims (3)
1. cable temperature and current-carrying capacity on-line monitoring system, is characterized in that: it comprises current sensing means, temperature-detecting device, acquisition terminal and industrial computer; Described current sensing means comprises the first current detector (2) on each the single-phase electric wire (1) that is arranged in monitored cable and is positioned at the second current detector (4) on monitored cable bus (3); Described temperature-detecting device is fixedly mounted on monitored cable; The first current detector (2), the second current detector (4) are connected with acquisition terminal by connector respectively with temperature-detecting device, and acquisition terminal is connected with industrial computer by telecommunication mode.
2. cable temperature according to claim 1 and current-carrying capacity on-line monitoring system, it is characterized in that: described the first current detector (2) and the second current detector (4) include Luo-coil, amplifier and converter, the output terminal of Luo-coil is connected with the input end of amplifier by anti-electromagnetic interference (EMI) absorbing circuit, between the output terminal of amplifier and the input end of converter, by A/D change-over circuit, be connected, the output terminal of converter is connected with the input end of connector.
3. cable temperature according to claim 1 and current-carrying capacity on-line monitoring system, is characterized in that: between described connector and acquisition terminal, by RS485 bus, be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420367940.XU CN203929129U (en) | 2014-07-04 | 2014-07-04 | Cable temperature and current-carrying capacity on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420367940.XU CN203929129U (en) | 2014-07-04 | 2014-07-04 | Cable temperature and current-carrying capacity on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203929129U true CN203929129U (en) | 2014-11-05 |
Family
ID=51824930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420367940.XU Expired - Lifetime CN203929129U (en) | 2014-07-04 | 2014-07-04 | Cable temperature and current-carrying capacity on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203929129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680619A (en) * | 2016-11-24 | 2017-05-17 | 中国电力科学研究院 | Cable ampacity test system |
| CN110108983A (en) * | 2019-05-23 | 2019-08-09 | 深圳市壹电电力技术有限公司 | A kind of intelligent cable state online monitoring method management method |
-
2014
- 2014-07-04 CN CN201420367940.XU patent/CN203929129U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680619A (en) * | 2016-11-24 | 2017-05-17 | 中国电力科学研究院 | Cable ampacity test system |
| CN110108983A (en) * | 2019-05-23 | 2019-08-09 | 深圳市壹电电力技术有限公司 | A kind of intelligent cable state online monitoring method management method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |
|
| CX01 | Expiry of patent term |