CN204028285U - A kind of three-phase single-core high-voltage cable on-Line Monitor Device - Google Patents

A kind of three-phase single-core high-voltage cable on-Line Monitor Device Download PDF

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Publication number
CN204028285U
CN204028285U CN201420383826.6U CN201420383826U CN204028285U CN 204028285 U CN204028285 U CN 204028285U CN 201420383826 U CN201420383826 U CN 201420383826U CN 204028285 U CN204028285 U CN 204028285U
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China
Prior art keywords
cable
voltage cable
monitor device
line monitor
phase single
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CN201420383826.6U
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Chinese (zh)
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黎文安
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Wuhan long open Intelligent Technology Co., Ltd.
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黎文安
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Abstract

The utility model provides a kind of three-phase single-core high-voltage cable on-Line Monitor Device, for the state of insulation of underground high voltage cable and whether arrive outside destroy again and detect, judge, effectively ensures the security of operation of underground cable.The technical solution of the utility model is: described device comprises supply module, wireless communication module, current transformer, vibration temperature probe, measures host module and upper monitoring equipment; Described supply module, wireless communication module, current transformer, vibration temperature probe are connected with measurement host module respectively, and described measurement host module is connected with upper monitoring equipment by wireless communication module.

Description

A kind of three-phase single-core high-voltage cable on-Line Monitor Device
Technical field
The utility model relates to electric power monitoring technical field, and it is specifically related to a kind of three-phase single-core high-voltage cable on-Line Monitor Device.
Background technology
The main task of power cable on-line monitoring and diagnosis understands cable insulation state; comprise and adopt various detection, measurement, supervision, analysis and method of discrimination; the history and current situation of coupling system; consider environmental factor; cable insulation state is assessed; judge that it is in normal or abnomal condition; and state is shown and record; warning is sent to abnormality; so that operations staff processes in time, and provide information and basic data for the insulation assessment of equipment, reasonable employment and trouble free service.In addition, due to privacy device under power cable possession, the hidden danger of various outside destroy threatens the safe operation of cable line always, as outside destroy, worm ant gnaw and bite, a set of effective method must be had, automatic discriminating when cable jacket is subject to multiple outside destroy and location can be realized.
Utility model content
The utility model provides a kind of three-phase single-core high-voltage cable on-Line Monitor Device, for the state of insulation of underground high voltage cable and whether arrive outside destroy again and detect, judge, effectively ensures the security of operation of underground cable.
The technical solution of the utility model is: described device comprises supply module, wireless communication module, current transformer, vibration temperature probe, measures host module and upper monitoring equipment; Described supply module, wireless communication module, current transformer, vibration temperature probe are connected with measurement host module respectively, and described measurement host module is connected with upper monitoring equipment by wireless communication module.
As preferably, the utility model additionally uses following technical scheme:
Described current transformer comprises ground current mutual inductor and main push-towing rope current transformer.Described ground current mutual inductor is three groups, is connected respectively with the metal sheath of three high-tension cables, for detecting the circulation of corresponding metal sheath; Described main push-towing rope current transformer has one group, is connected, for detecting the electric current of this core with any cable core in threephase cable.Described ground current mutual inductor and main push-towing rope current transformer are separately positioned on no-go sub place or intermediate head place of high-tension cable.Described ground current mutual inductor and main push-towing rope current transformer are Open Type Electric Current Mutual Inductor.Described vibration temperature probe is three groups, is connected respectively with three high-voltage cable insulating sheaths.Described vibration temperature probe is arranged at no-go sub place or intermediate head place of high-tension cable.Described supply module adopts way of electromagnetic induction power taking from cable to provide electric energy for device.
The beneficial effects of the utility model are:
1, ground current mutual inductor and main push-towing rope current transformer is provided with in this device, can detect the main push-towing rope electric current of cable and metal sheath circulation timely and accurately, judge the ground state of underground high voltage cable from testing result, thus judge the state of insulation of high-tension cable.
2, be provided with vibration temperature probe in this device, can monitor the displacement of underground cable, Vibration Condition, judge whether cable is subject to outside destroy from testing result, ensure the security of operation of cable and safeguard in time.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of single core cable.
Fig. 2 is structural representation of the present utility model.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
Before describing an embodiment, first do simple introduction to high-tension cable to be monitored, cable to be monitored is three-phase single-core high-voltage cable, and namely one group of high-tension cable comprises three single core cables.Wherein the structure of each root single core cable as shown in Figure 1, is followed successively by core 1, interior semi-conductive layer 2, XLPE insulation course 3, outer semiconducting layer 4, metal sheath 5 and insulating sheath 6 from inside to outside.
The structure of this device comprises supply module, wireless communication module, current transformer, vibration temperature probe, measures host module and upper monitoring equipment; Supply module, wireless communication module, current transformer, vibration temperature probe are connected with measurement host module respectively, measure host module and are connected with upper monitoring equipment by wireless communication module.
In the present embodiment, current transformer comprises ground current mutual inductor and main push-towing rope current transformer.Ground current mutual inductor is three groups, is connected respectively with the metal sheath 5 of three high voltage single-core cables, for detecting the circulation of the metal sheath 5 of corresponding single core cable; Main push-towing rope current transformer has one group, is connected, for detecting the electric current of this core 1 with any cable core 1 in threephase cable.Ground current mutual inductor and main push-towing rope current transformer are separately positioned on no-go sub place or intermediate head place of high-tension cable.Ground current mutual inductor and main push-towing rope current transformer are Open Type Electric Current Mutual Inductor.Vibration temperature probe is three groups, is connected respectively with three single core cable insulating sheath 6.Vibration temperature probe is arranged at no-go sub place or intermediate head place of high-tension cable.Supply module adopts way of electromagnetic induction power taking from cable to provide electric energy for device.
Below introduce the monitoring principle of this device:
Cable metal sheath 5 external insulation sheath 6 mainly protection metal sheath 5 corrodes from ambient substance or damages.Single core cable is when normal ground, and the circulation on metal sheath 5 is minimum, mainly capacity current; If metal sheath 5 external insulation sheath 6 is corroded, metal sheath is caused to occur the improper ground connection of multiple spot, metal sheath 5 grounding circulation will increase sharply, thermal losses increases greatly, current-carrying capacity of cable obviously declines, and time serious, shield circulating current value can reach more than 90% of principal current.
Main push-towing rope current sensor and ground current sensor is provided with in this device, each sensor can detect the current conditions of corresponding site, and detected value is sent to measure host module process, measure host module the metal sheath circulation recorded and main push-towing rope electric current to be carried out compare with the metal sheath circulation of systemic presupposition and main push-towing rope electric current, can judge whether cable exists the situation of Abnormal Grounding, occur that namely Abnormal Grounding means that on cable, insulating sheath 6 is destroyed, cable is in nonisulated state.Measure and after host module compares, comparison information is sent to upper monitoring equipment by wireless communication module and carries out showing and warning etc.
When underground cable is subject to outside destroy, the operational factor of cable, as temperature, vibration parameters all can change, for this characteristic of cable, vibration temperature sensor is provided with in this device, can the temperature of insulation course of Real-Time Monitoring cable and Vibration Condition, and monitoring result is sent to measures host module and process, measure host module the temperature value received and vibration parameters value and preset critical are compared, can judge whether cable suffers outside destroy.

Claims (8)

1. a three-phase single-core high-voltage cable on-Line Monitor Device, is characterized in that: described device comprises supply module, wireless communication module, current transformer, vibration temperature probe, measures host module and upper monitoring equipment; Described supply module, wireless communication module, current transformer, vibration temperature probe are connected with measurement host module respectively, and described measurement host module is connected with upper monitoring equipment by wireless communication module.
2. a kind of three-phase single-core high-voltage cable on-Line Monitor Device according to claim 1, is characterized in that: described current transformer comprises ground current mutual inductor and main push-towing rope current transformer.
3. a kind of three-phase single-core high-voltage cable on-Line Monitor Device according to claim 2, is characterized in that: described ground current mutual inductor is three groups, is connected respectively with the metal sheath of three high-tension cables, for detecting the circulation of corresponding metal sheath; Described main push-towing rope current transformer has one group, is connected, for detecting the electric current of this core with any cable core in threephase cable.
4. a kind of three-phase single-core high-voltage cable on-Line Monitor Device according to claim 3, is characterized in that: described ground current mutual inductor and main push-towing rope current transformer are separately positioned on no-go sub place or intermediate head place of high-tension cable.
5. a kind of three-phase single-core high-voltage cable on-Line Monitor Device as claimed in any of claims 2 to 4, is characterized in that: described ground current mutual inductor and main push-towing rope current transformer are Open Type Electric Current Mutual Inductor.
6. a kind of three-phase single-core high-voltage cable on-Line Monitor Device according to claim 1, is characterized in that: described vibration temperature probe is three groups, is connected respectively with three high-voltage cable insulating sheaths.
7. a kind of three-phase single-core high-voltage cable on-Line Monitor Device according to claim 6, is characterized in that: described vibration temperature probe is arranged at no-go sub place or intermediate head place of high-tension cable.
8. a kind of three-phase single-core high-voltage cable on-Line Monitor Device according to claim 1, is characterized in that: described supply module adopts way of electromagnetic induction power taking from cable to provide electric energy for device.
CN201420383826.6U 2014-07-11 2014-07-11 A kind of three-phase single-core high-voltage cable on-Line Monitor Device Active CN204028285U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420383826.6U CN204028285U (en) 2014-07-11 2014-07-11 A kind of three-phase single-core high-voltage cable on-Line Monitor Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420383826.6U CN204028285U (en) 2014-07-11 2014-07-11 A kind of three-phase single-core high-voltage cable on-Line Monitor Device

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CN204028285U true CN204028285U (en) 2014-12-17

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105759176A (en) * 2016-04-20 2016-07-13 国网浙江省电力公司杭州供电公司 Cable monitoring grounding box and cable monitoring system
CN109035659A (en) * 2018-08-27 2018-12-18 许继集团有限公司 A kind of high voltage power cable anti-theft monitoring method and device
CN109375028A (en) * 2018-08-27 2019-02-22 许继集团有限公司 A kind of broken string recognition methods of high voltage power cable circulating current sensor and device
CN112578237A (en) * 2020-11-30 2021-03-30 国网北京市电力公司 Cable insulation fault detection method and device and processor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105759176A (en) * 2016-04-20 2016-07-13 国网浙江省电力公司杭州供电公司 Cable monitoring grounding box and cable monitoring system
CN109035659A (en) * 2018-08-27 2018-12-18 许继集团有限公司 A kind of high voltage power cable anti-theft monitoring method and device
CN109375028A (en) * 2018-08-27 2019-02-22 许继集团有限公司 A kind of broken string recognition methods of high voltage power cable circulating current sensor and device
CN109035659B (en) * 2018-08-27 2020-02-21 许继集团有限公司 Anti-theft cutting monitoring method and device for high-voltage power cable
CN112578237A (en) * 2020-11-30 2021-03-30 国网北京市电力公司 Cable insulation fault detection method and device and processor

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20181128

Address after: 430074 No. 1, 3rd floor, Pioneer Building, Science Park, Wuhan University, Donghu Development Zone, Wuhan City, Hubei Province

Patentee after: Wuhan long open Intelligent Technology Co., Ltd.

Address before: 430000 room 1, unit 55, H District, Jinxiu Longcheng District, 888, East Lake high tech Development Zone, Wuhan, Hubei, China, 1201

Patentee before: Li Wenan

TR01 Transfer of patent right