CN103884384A - Method for detecting and wirelessly polling power cable intermediate joint - Google Patents
Method for detecting and wirelessly polling power cable intermediate joint Download PDFInfo
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- CN103884384A CN103884384A CN201410136391.XA CN201410136391A CN103884384A CN 103884384 A CN103884384 A CN 103884384A CN 201410136391 A CN201410136391 A CN 201410136391A CN 103884384 A CN103884384 A CN 103884384A
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Abstract
The invention discloses a method for detecting and wirelessly polling a power cable intermediate joint, and relates to the technical field of power cable intermediate joint detection. According to the method, a handhold terminal, a detection device and a power source module for powering the detection device are arranged. The handhold terminal comprises an MCU which is connected with a display and input module, a storage module I and a wireless communication module I. The storage module I is connected with an external interface module, and the detection device comprises a data processing unit which is connected with a current measuring module, a wireless communication module II, a temperature measuring module, a storage module II and a sound-light alarm module. The handhold terminal receives data sent by the detection module through the wireless communication module I, the data are stored in the storage module I after being processed by the MCU, and historical data stored in the storage module I are read by the external interface module. By means of the method, the state of a cable connector can be more accurately judged, monitoring difficulty of maintenance personnel and operation cost are reduced.
Description
Technical field
The present invention relates to power cable intermediate head detection technique field, specifically a kind of power cable
Intermediate head detection and wireless polling system.
Background technology
In underground cable line, cause cable two ends induced voltage excessive because the limited length of unit cable line and cable distributed capacitance when long exists, in the time that the distance of power supply is longer, inevitably will occur intermediate head.Due to the effect of joint electric current, its temperature changes; Joint running temperature is the important parameter of reaction operation states of electric power system.And intermediate head is the weakest link in safe operation of power system, the heat producing because of the reason such as high contact resistance, shelf depreciation accumulation of intermediate joint of electric cable constantly raises the temperature of cable intermediate joint, accelerate the aging of cable insulation material, discharge current progressively increases, and arrives and to a certain degree causes puncturing or fire.Hence one can see that, as long as measure in advance the temperature of cable intermediate joint inside, finds as early as possible the cable intermediate joint that temperature raises, and just can fix a breakdown in time, ensures the normal operation of power circuit, prevents the generation of power outage.
Although also there are various types of temperature measuring equipments at present, be all the measurement for power cable Joint Temperature, the leakage current of earthing cable was not had to consideration, thereby comprehensively judged the state of power cable intermediate head.
Because the temperature in cable street corner is to change continuously and slowly, so in the time that intermediate head is superheated to accident generation, has considerable time to take measures to avoid the generation of this accident, thereby guarantee the safety of circuit.Before this, owing to being subject to the restriction of condition and technology, many places still adopt the method for artificial periodic measurement to monitor the temperature of electric power cable intermediate joint.Because cable is all laid in cable duct or is embedded in undergroundly, workman's measurement is not only very inconvenient, is also very dangerous sometimes.Consider that electric system is huge, power cable intermediate head is numerous, managerial personnel have no way of examining tour personnel whether to put, whether omit tour equipment in place, and staff's water product are uneven, existing measurement data has the problems such as obvious errors, data recording be lack of standardization, is just starved of that the convenient relevant personnel of a kind of energy detect, device and the cruising inspection system of statistics and analysis related data.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of power cable intermediate head detection and radio patrol checking method, can judge more accurately cable adapter state, prevent that joint from producing because damaging the fire that high temperature causes, reduces maintainer's supervision difficulty and operation cost simultaneously.
The present invention realizes with following technical scheme: a kind of power cable intermediate head detection and radio patrol checking method, comprise handheld terminal, pick-up unit and the power module to pick-up unit power supply;
Described handheld terminal comprises the MCU for data processing and control, is connected with respectively and shows and load module, memory module I, wireless communication module I on MCU; Described memory module I is connected with external interface module;
Described pick-up unit comprises data processing unit, is connected with respectively current measurement module on data processing unit, wireless communication module II, temperature-measuring module, memory module II and acousto-optic alarm module;
Pick-up unit comprises sleep pattern and two kinds of mode of operations of mode of operation, only retains basic function under sleep pattern, and two kinds of pattern timesharing are carried out; When mode of operation, current measurement module and temperature-measuring module detect respectively the leakage current signal of earthing cable and the temperature signal of cable splice, and deposit data in memory module II, and by comprehensive both data of data processing unit, the state of cable splice is judged, in the time exceeding early warning value, carry out sound and light alarm, analysis result is deposited in to memory module II simultaneously; When wireless communication module II detects the request signal of handheld terminal, data processing unit does respective handling to the signal receiving, and the data of storing in memory module II are uploaded to handheld terminal via wireless communication module II.
The invention has the beneficial effects as follows: can measure the leakage current of earthing cable and the temperature of power cable intermediate head simultaneously, comprehensively to judge the state of power cable intermediate head, improve the accuracy of judgement.In pick-up unit, have jumbo memory module, can deposit for a long time the historical data recording, and data processing unit can to its add up with analyze, final data can be taken out by handheld terminal.
Accompanying drawing explanation
Fig. 1 is principle of the invention block diagram.
In figure: 1, handheld terminal, 1-1, MCU, 1-2, demonstration and load module, 1-3, memory module I, 1-4, external interface module, 1-5, wireless communication module I, 2, pick-up unit, 2-1, data processing unit, 2-2, current measurement module, 2-3, wireless communication module II, 2-4, temperature-measuring module, 2-5, memory module II, 2-6, sound and light alarm module, 3, power module.
Embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is described in more detail.
As shown in Figure 1, a kind of power cable intermediate head detection and radio patrol checking method have a handheld terminal 1, pick-up unit 2 and the power module 3 to pick-up unit power supply.Described handheld terminal 1 comprises the MCU1-1 for data processing and control, is connected with respectively and shows and load module 1-2, memory module I 1-3, wireless communication module I 1-5 on MCU1-1; Described memory module I 1-3 is connected with external interface module 1-4.Described pick-up unit 2 comprises data processing unit 2-1, is connected with respectively current measurement module 2-2 on data processing unit 2-1, wireless communication module 2-3, temperature-measuring module 2-4, memory module II 2-5 and acousto-optic alarm module 2-6.
Wherein, show and load module 1-2 employing touch liquid crystal display, can show data, also can input data and control signal.
Memory module I 1-3 is for storing the data that handheld terminal 1 obtains and processes from pick-up unit 2.
External interface module 1-4 reads the data of handheld terminal 1 for external unit.
Wireless communication module I 1-5, for communicating by letter with pick-up unit 2, sends and receives data.
Current measurement module 2-2, for detection of the leakage current of earthing cable.
Temperature-measuring module 2-4, is positioned over power cable intermediate head place, for detection of the temperature of power cable intermediate head.
Memory module II 2-5, the leakage current and the temperature signal that record for depositing pick-up unit, can store for a long time, in the time that handheld terminal fetches data, reads.
Described pick-up unit is arranged in a wall-hanging housing, housing is arranged near wall power cable intermediate head, wherein temperature-measuring module 2-4 is pasted on lead sealing place of power cable intermediate head tail pipe, and current measurement module 2-2 is connected in earthing cable.
Wireless communication module I and wireless communication module II all adopt the X II ee module based on Zig II ee, pick-up unit in wireless signal reach is linked to the same network segment, in whole cable system, set up multiple network segments, handheld terminal can obtain the data in the whole network segment at a pick-up unit place, has alleviated the work of patrolling and examining.
Pick-up unit comprises sleep pattern and two kinds of mode of operations of mode of operation, and two kinds of pattern timesharing are carried out, and saves the energy.Under sleep pattern, only retain with handheld terminal communication function and can upload last measurement result, do not carry out real time temperature, current acquisition.The each sensor signal of Real-time Collection under mode of operation.When mode of operation, current measurement module 2-2 and temperature-measuring module 2-4 detect respectively the leakage current signal of earthing cable and the temperature signal of cable splice, and deposit data in memory module II 2-5, and by comprehensive both data of data processing unit 2-1, the state of cable splice is judged, in the time exceeding early warning value, carry out sound and light alarm, analysis result is deposited in to memory module II 2-5 simultaneously.When wireless communication module II 2-3 detects the request signal of handheld terminal 1, data processing unit 2-1 does respective handling to the signal receiving, and the data of storing in memory module II 2-5 are uploaded to handheld terminal 1 via wireless communication module II 2-3.Pick-up unit 2 adopts the module based on Zig II ee technology X II ee, its wireless self-networking function can be linked the same network segment by the pick-up unit 2 in X II ee signal cover, if while receiving the data of obtaining in interior other pick-up units of this network segment, can receive the data in other pick-up units in this network segment by wireless communication module II 2-3, and be forwarded to handheld terminal 1, avoid staff to go to each monitoring point of collection in worksite, greatly alleviated workload.
Handheld terminal 1 that is to say the equipment of hand-held, and staff is patrolling and examining middle use.In handheld terminal 1, have the distribution plan of pick-up unit 2, the data at the complete place of every collection just show corresponding mark on distribution plan, avoid staff undetected.When in the coverage of handheld terminal 1 wireless communication module II 2-3 in pick-up unit 2, can request detection device 2 uploading datas, also can request receiving and the same network segment of pick-up unit 2 in other pick-up units in data, and by MCU to data analysis and processing, result is presented at and is shown and load module 1-2, data can be deposited in to memory module I 1-3, and can data be taken out by external interface module simultaneously.Wherein external interface module 1-4 is US II interface and GPRS module, and handheld terminal 1 can send on relevant responsible official's mobile phone patrolling and examining result by GPRS module, is convenient to relevant responsible official and understands at any time work progress and result.
Claims (4)
1. power cable intermediate head detection and a radio patrol checking method, is characterized in that: comprise handheld terminal (1), pick-up unit (2) and the power module (3) to pick-up unit (2) power supply;
Described handheld terminal (1) comprises the MCU (1-1) for data processing and control, on MCU (1-1), be connected with respectively and show and load module (1-2), memory module I (1-3), wireless communication module I (1-5); Described memory module I (1-3) is connected with external interface module (1-4);
Described pick-up unit (2) comprises data processing unit (2-1), on data processing unit (2-1), be connected with respectively current measurement module (2-2), wireless communication module II (2-3), temperature-measuring module (2-4), memory module II (2-5) and acousto-optic alarm module (2-6);
Pick-up unit comprises sleep pattern and two kinds of mode of operations of mode of operation, only retains basic function under sleep pattern, and two kinds of pattern timesharing are carried out; When mode of operation, current measurement module (2-2) and temperature-measuring module (2-4) detect respectively the leakage current signal of earthing cable and the temperature signal of cable splice, and deposit data in memory module II (2-5), and by data processing unit (2-1) comprehensively both data the state of cable splice is judged, in the time exceeding early warning value, carry out sound and light alarm, analysis result is deposited in to memory module II (2-5) simultaneously; When wireless communication module II (2-3) detects the request signal of handheld terminal (1), data processing unit (2-1) does respective handling to the signal receiving, and the data of storage in memory module II (2-5) are uploaded to handheld terminal 1(via wireless communication module II (2-3)).
2. a kind of power cable intermediate head detection according to claim 1 and radio patrol checking method, it is characterized in that: the wireless communication module II (2-3) in described handheld terminal (1) in wireless communication module I (1-5) and pick-up unit (2) all adopts the X II ee module based on Zig II ee, and the pick-up unit (2) in X II ee signal cover is linked the same network segment by its wireless self-networking function, in handheld terminal (1), there is the distribution plan of pick-up unit (2), the data at the complete place of every collection, just on distribution plan, show corresponding mark, when in the coverage of handheld terminal (1) wireless communication module II (2-3) in pick-up unit (2), can request detection device (2) uploading data, also can request receiving and the same network segment of pick-up unit (2) in other pick-up units in data, and by MCU to data analysis and processing, result is presented at and is shown and load module (1-2), data can be deposited in to memory module I (1-3) simultaneously, and can data be taken out by external interface module.
3. a kind of power cable intermediate head detection according to claim 1 and radio patrol checking method, is characterized in that: described external interface module (1-4) is US II interface module and GPRS interface module.
4. according to a kind of power cable intermediate head detection and radio patrol checking method described in claim 1-3 any one, it is characterized in that: described pick-up unit is arranged in a wall-hanging housing, housing is arranged near wall power cable intermediate head, wherein temperature-measuring module (2-4) is pasted on lead sealing place of power cable intermediate head tail pipe, and current measurement module (2-2) is connected in earthing cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410136391.XA CN103884384A (en) | 2014-04-04 | 2014-04-04 | Method for detecting and wirelessly polling power cable intermediate joint |
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| CN201410136391.XA CN103884384A (en) | 2014-04-04 | 2014-04-04 | Method for detecting and wirelessly polling power cable intermediate joint |
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Cited By (6)
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| CN104407226A (en) * | 2014-12-21 | 2015-03-11 | 国家电网公司 | Live test method of line cable joint contact resistance |
| CN106291223A (en) * | 2016-08-11 | 2017-01-04 | 国网新疆电力公司信息通信公司 | A kind of communication cable security maintenance service system |
| CN108072405A (en) * | 2017-10-25 | 2018-05-25 | 仰恩大学 | A kind of high voltage overhead lines Joint Reliability real-time monitoring system |
| CN110456665A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Equipment running status detection method during petroleum chemical enterprise's inspection |
| CN110672921A (en) * | 2019-10-31 | 2020-01-10 | 国网山西省电力公司长治供电公司 | Three-core power cable phase detection device in off-line state |
| CN111007335A (en) * | 2019-11-29 | 2020-04-14 | 珠海施诺电力科技有限公司 | Comprehensive monitoring system for operating condition of electrical equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407226A (en) * | 2014-12-21 | 2015-03-11 | 国家电网公司 | Live test method of line cable joint contact resistance |
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| CN106291223A (en) * | 2016-08-11 | 2017-01-04 | 国网新疆电力公司信息通信公司 | A kind of communication cable security maintenance service system |
| CN108072405A (en) * | 2017-10-25 | 2018-05-25 | 仰恩大学 | A kind of high voltage overhead lines Joint Reliability real-time monitoring system |
| CN110456665A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Equipment running status detection method during petroleum chemical enterprise's inspection |
| CN110672921A (en) * | 2019-10-31 | 2020-01-10 | 国网山西省电力公司长治供电公司 | Three-core power cable phase detection device in off-line state |
| CN110672921B (en) * | 2019-10-31 | 2023-04-28 | 国网山西省电力公司长治供电公司 | Three-core power cable phase detection device in off-line state |
| CN111007335A (en) * | 2019-11-29 | 2020-04-14 | 珠海施诺电力科技有限公司 | Comprehensive monitoring system for operating condition of electrical equipment |
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Application publication date: 20140625 |