CN207335915U - A kind of cable monitoring system - Google Patents
A kind of cable monitoring system Download PDFInfo
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- CN207335915U CN207335915U CN201721184380.4U CN201721184380U CN207335915U CN 207335915 U CN207335915 U CN 207335915U CN 201721184380 U CN201721184380 U CN 201721184380U CN 207335915 U CN207335915 U CN 207335915U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 238000012545 processing Methods 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000011241 protective layer Substances 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims abstract description 4
- 239000002344 surface layer Substances 0.000 claims description 16
- 239000010410 layer Substances 0.000 abstract description 17
- 238000004891 communication Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of cable monitoring system, it includes Rogowski coil, current transformer, connector conductor temperature sensor, cable top layer temperature sensor, data acquisition module, communication module and data processing module；Wherein, data acquisition module is connected with Rogowski coil, current transformer, connector conductor temperature sensor and cable top layer temperature sensor respectively; to gather cable load current data, cable metal protective layer earth current data, cable connector conductor temperature data and cable top layer temperature data; and; the data sending that data acquisition module is gathered by communication module is to data acquisition module; data processing module judges cable and is in normal operating condition or abnormal operating condition by comparing the data of collection and the magnitude relationship of its alarm threshold value.Therefore, the safe operation index that the utility model can be to cable carries out comprehensive monitoring, the convenient management to electric system.
Description
Technical Field
The utility model relates to a cable detects technical field, in particular to cable monitoring system.
Background
The cable is an important component of a power system, and effective monitoring of the grounding current of the cable sheath and the temperature of the cable has important significance on safe operation of the cable, so that a technical scheme capable of comprehensively monitoring the safe operation index of the cable is needed to be designed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cable monitoring system.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a cable monitoring system comprises a Rogowski coil, a current transformer, a connector conductor temperature sensor, a cable surface layer temperature sensor, a data acquisition module, a communication module and a data processing module; wherein,
the Rogowski coil is sleeved on the cable and used for detecting the load current of the cable; the current transformer is sleeved on a grounding connecting wire of the cable metal protective layer and used for detecting grounding current of the cable metal protective layer; the joint conductor temperature sensor is used for detecting the temperature of a cable joint conductor, and the cable surface layer temperature sensor is used for detecting the temperature of a cable surface layer; the data acquisition module is respectively connected with the Rogowski coil, the current transformer, the joint conductor temperature sensor and the cable surface layer temperature sensor and is used for acquiring cable load current data, cable metal protective layer grounding current data, cable joint conductor temperature data and cable surface layer temperature data; the data acquisition module is connected with the data processing module and sends acquired data to the data processing module; the data processing module calculates the conductor temperature of the cable according to the cable load current data and the cable surface temperature data, compares the grounding current data of the metal protective layer of the cable, the conductor temperature data of the cable joint and the conductor temperature data of the cable with the alarm threshold value of the cable respectively, and judges whether the cable is in a normal operation state or an abnormal operation state.
According to a specific embodiment, the utility model discloses an among the cable monitoring system, data processing module calculates the temperature rise speed of cable top layer and cable joint conductor according to cable top layer temperature data and cable joint conductor temperature data to when the temperature rise speed of cable top layer or cable joint conductor reaches the setting value, produce temperature alarm signal.
According to a specific implementation mode, the utility model discloses an among the cable monitoring system, still include ambient temperature sensor, the data acquisition module through with ambient temperature sensor connects, gathers the temperature data of the cable environment that ambient temperature sensor detected.
According to a specific implementation mode, in the cable monitoring system of the utility model, the quantity of luo shi coil is three at least, and every luo shi coil is used for the phase place and the load current of each looks cable in the three-phase electricity.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an among the cable monitoring system, data acquisition module respectively with the rogowski coil, current transformer, connect conductor temperature sensor and cable top layer temperature sensor and be connected, with collection cable load current data, cable metal protective layer ground current data, cable joint conductor temperature data and cable top layer temperature data, furthermore, data acquisition module sends the data of its collection for data acquisition module through communication module, data processing module is through the big or small relation of the data of comparison collection rather than the alarm threshold value, and judge that the cable is in normal operating condition or unusual running state. Therefore, the utility model discloses can monitor the safe operation index of cable comprehensively, the convenient management to electric power system.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Reference numerals: the system comprises a Rogowski coil 1, a cable surface layer temperature sensor 2, a joint conductor temperature sensor 3, a cable 4, a current transformer 5, an environment temperature sensor 6, a data acquisition module 7 and a data processing module 8.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.
The structure of the present invention shown in fig. 1 is schematically illustrated; wherein, the utility model discloses a cable monitoring system includes luo shi coil 1, current transformer 5, connects conductor temperature sensor 3, cable top layer temperature sensor 2, data acquisition module 7, communication module and data processing module 8.
Wherein, the rogowski coil 1 is sleeved on the cable 4 and used for detecting the load current of the cable 4. The cable 4 is provided with a metal protection layer, a grounding connecting wire is arranged on the metal protection layer, and the current transformer 5 is sleeved on the grounding connecting wire of the cable metal protection layer and used for detecting grounding current of the metal protection layer of the cable 4. The joint conductor temperature sensor is used for detecting the temperature of the joint conductor of the cable 4, and the cable surface layer temperature sensor is used for detecting the temperature of the surface layer of the cable 4.
The data acquisition module 7 is respectively connected with the Rogowski coil 1, the current transformer 5, the joint conductor temperature sensor 3 and the cable surface layer temperature sensor 2, so as to acquire cable load current data, cable metal protective layer grounding current data, cable joint conductor temperature data and cable surface layer temperature data. Moreover, the data acquisition module 7 is connected with the data processing module 8 and transmits the acquired data to the data processing module 8. The data processing module 8 calculates the conductor temperature of the cable according to the cable load current data and the cable surface temperature data, compares the grounding current data of the metal protection layer of the cable, the conductor temperature data of the cable joint and the conductor temperature data of the cable with the alarm threshold value, and judges whether the cable 4 is in a normal operation state or an abnormal operation state.
Specifically, the utility model discloses in, the alarm threshold value of cable metal protective layer ground current data, cable joint conductor temperature data and cable conductor temperature data is according to actual behavior and preset to keep preset's alarm threshold value in data processing module. The way that the data processing module calculates the conductor temperature of the cable according to the cable load current data and the cable surface temperature data belongs to the existing calculation method, and details are not repeated here.
When implementing, the utility model discloses an among the cable monitoring system, data processing module calculates the temperature rise speed of cable top layer and cable joint conductor according to cable top layer temperature data and cable joint conductor temperature data to when the temperature rise speed of cable top layer or cable joint conductor reaches the setting value, produce temperature alarm signal.
Because the temperature abnormity of the cable is a common problem in cable faults and is usually caused by overload operation, temperature alarm is carried out by judging whether the temperature data of the surface layer of the cable and the temperature rise rate of a cable joint conductor reach set values or not.
In fig. 1 the utility model discloses an among the schematic structure diagram, the utility model discloses a cable monitoring system still includes ambient temperature sensor 6, and data acquisition module 7 is connected through being connected with ambient temperature sensor 6, gathers the temperature data of the cable environment that ambient temperature sensor 6 detected. When the cable is in operation, because the ambient temperature that the cable is located has certain influence to the temperature of cable, consequently, can monitor the running state of cable more comprehensively through setting up ambient temperature sensor.
In practice, in the application of power transmission, the cable transmits three-phase power. Therefore, the utility model discloses a quantity of the luo shi coil among the cable monitoring system is three at least, and every luo shi coil is arranged in phase place and the load current of a cable in the three-phase electricity.
Claims (4)
1. A cable monitoring system is characterized by comprising a Rogowski coil, a current transformer, a connector conductor temperature sensor, a cable surface layer temperature sensor, a data acquisition module and a data processing module; wherein,
the Rogowski coil is sleeved on the cable and used for detecting the load current of the cable; the current transformer is sleeved on a grounding connecting wire of the cable metal protective layer and used for detecting grounding current of the cable metal protective layer; the joint conductor temperature sensor is used for detecting the temperature of a cable joint conductor, and the cable surface layer temperature sensor is used for detecting the temperature of a cable surface layer; the data acquisition module is respectively connected with the Rogowski coil, the current transformer, the joint conductor temperature sensor and the cable surface layer temperature sensor and is used for acquiring cable load current data, cable metal protective layer grounding current data, cable joint conductor temperature data and cable surface layer temperature data; the data acquisition module is connected with the data processing module and sends acquired data to the data processing module; the data processing module calculates the conductor temperature of the cable according to the cable load current data and the cable surface temperature data, compares the grounding current data of the metal protective layer of the cable, the conductor temperature data of the cable joint and the conductor temperature data of the cable with the alarm threshold value of the cable respectively, and judges whether the cable is in a normal operation state or an abnormal operation state.
2. The cable monitoring system of claim 1, wherein the data processing module calculates the rate of temperature rise of the cable skin and the cable joint conductor based on the cable skin temperature data and the cable joint conductor temperature data, and generates the temperature alarm signal when the rate of temperature rise of the cable skin or the cable joint conductor reaches a set value.
3. The cable monitoring system of claim 1, further comprising an ambient temperature sensor, wherein the data acquisition module is connected to the ambient temperature sensor and configured to acquire temperature data of an environment in which the cable is located, the temperature data being detected by the ambient temperature sensor.
4. The cable monitoring system according to any one of claims 1 to 3, wherein the number of the Rogowski coils is at least three, at least one Rogowski coil is arranged on each phase cable in the three-phase power, and each Rogowski coil is used for detecting the phase and the load current of the corresponding phase cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184380.4U CN207335915U (en) | 2017-09-15 | 2017-09-15 | A kind of cable monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184380.4U CN207335915U (en) | 2017-09-15 | 2017-09-15 | A kind of cable monitoring system |
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| CN207335915U true CN207335915U (en) | 2018-05-08 |
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| CN201721184380.4U Active CN207335915U (en) | 2017-09-15 | 2017-09-15 | A kind of cable monitoring system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298268A (en) * | 2018-11-09 | 2019-02-01 | 深圳供电局有限公司 | High-voltage cable monitoring device |
| CN110286265A (en) * | 2019-07-24 | 2019-09-27 | 四川电器集团股份有限公司 | Contact arm measure annular device for vacuum circuit breaker |
| CN110412330A (en) * | 2019-09-04 | 2019-11-05 | 广东电网有限责任公司 | A detection device for cable metal sheath circulation |
| CN111722155A (en) * | 2020-06-28 | 2020-09-29 | 上海感拓智能科技有限公司 | Cable joint fault monitoring system and monitoring method |
| CN112147545A (en) * | 2019-06-11 | 2020-12-29 | 北汽福田汽车股份有限公司 | System and method for detecting cable joint and vehicle |
| CN112857603A (en) * | 2021-03-02 | 2021-05-28 | 远东电缆有限公司 | High-temperature-resistant cable for wind power and monitoring device thereof |
| CN113566903A (en) * | 2021-09-28 | 2021-10-29 | 山东科华电力技术有限公司 | Distributed cable comprehensive online monitoring device and method |
| CN113608498A (en) * | 2021-05-26 | 2021-11-05 | 爱欧意科技无锡有限公司 | Intelligent management system and method for equipment state |
-
2017
- 2017-09-15 CN CN201721184380.4U patent/CN207335915U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298268A (en) * | 2018-11-09 | 2019-02-01 | 深圳供电局有限公司 | High-voltage cable monitoring device |
| CN112147545A (en) * | 2019-06-11 | 2020-12-29 | 北汽福田汽车股份有限公司 | System and method for detecting cable joint and vehicle |
| CN110286265A (en) * | 2019-07-24 | 2019-09-27 | 四川电器集团股份有限公司 | Contact arm measure annular device for vacuum circuit breaker |
| CN110286265B (en) * | 2019-07-24 | 2024-05-10 | 河北杰能电气设备有限公司 | Contact arm measuring ring device for vacuum circuit breaker |
| CN110412330A (en) * | 2019-09-04 | 2019-11-05 | 广东电网有限责任公司 | A detection device for cable metal sheath circulation |
| CN111722155A (en) * | 2020-06-28 | 2020-09-29 | 上海感拓智能科技有限公司 | Cable joint fault monitoring system and monitoring method |
| CN112857603A (en) * | 2021-03-02 | 2021-05-28 | 远东电缆有限公司 | High-temperature-resistant cable for wind power and monitoring device thereof |
| CN113608498A (en) * | 2021-05-26 | 2021-11-05 | 爱欧意科技无锡有限公司 | Intelligent management system and method for equipment state |
| CN113566903A (en) * | 2021-09-28 | 2021-10-29 | 山东科华电力技术有限公司 | Distributed cable comprehensive online monitoring device and method |
| CN113566903B (en) * | 2021-09-28 | 2022-02-22 | 山东科华电力技术有限公司 | Distributed cable comprehensive online monitoring device and method |
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