CN203630283U - Hand-held detection device used for cable insulation detection - Google Patents
Hand-held detection device used for cable insulation detection Download PDFInfo
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- CN203630283U CN203630283U CN201320759679.3U CN201320759679U CN203630283U CN 203630283 U CN203630283 U CN 203630283U CN 201320759679 U CN201320759679 U CN 201320759679U CN 203630283 U CN203630283 U CN 203630283U
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Abstract
本实用新型公开了一种用于电缆绝缘检测的手持式检测装置，其包括：局部放电传感器；手持式检测终端，其与局部放电传感器连接，所述检测终端包括信号调理模块、数据采集模块、数据处理模块、存储模块、显示装置和电源模块；其中所述信号调理模块与局部放电传感器数据连接，将接收自局部放电传感器的信号进行调理处理；所述数据采集模块与信号调理模块连接，采集局部放电信号；所述数据处理模块与数据采集模块连接，去除局部放电信号中的干扰；所述存储模块与数据处理模块连接，存储经过处理的局部放电信号；所述显示装置与数据处理模块连接，用于显示经过处理的局部放电信号；所述电源模块为检测终端提供电源。
The utility model discloses a hand-held detection device for cable insulation detection, which comprises: a partial discharge sensor; a hand-held detection terminal connected to the partial discharge sensor, and the detection terminal includes a signal conditioning module, a data acquisition module, A data processing module, a storage module, a display device, and a power supply module; wherein the signal conditioning module is connected to the partial discharge sensor data, and performs conditioning processing on the signal received from the partial discharge sensor; the data acquisition module is connected to the signal conditioning module to collect Partial discharge signal; the data processing module is connected to the data acquisition module to remove the interference in the partial discharge signal; the storage module is connected to the data processing module to store the processed partial discharge signal; the display device is connected to the data processing module , used to display the processed partial discharge signal; the power module provides power for the detection terminal.
Description
Technical field
The utility model relates to a kind of pick-up unit, relates in particular to a kind of pick-up unit detecting for cable insulation.
Background technology
Power cable is the important component part of electric system, XLPE(crosslinked polyethylene) cable is because its insulating property are good, dielectric loss coefficient is little, high temperature resistant, the advantage such as little and convenient for installation and maintenance that takes up room, is widely used in the transmission and distribution network in cities and towns.In the time there is defect in XLPE cable insulation inside, can cause the generation of the inner shelf depreciation of cable, it is aging that aggravation is insulated, and then cause insulation fault, affects the safe and reliable operation of cable.Because XLPE cable adopts the mode of underground laying more, increase the difficulty that judges that whether normal cable duty is.Traditional cycle of prophylactic tria is routinely long, can not find timely and effectively cable fault, and along with the widespread use of cable in electric power networks, single prophylactic repair pattern no longer can meet the needs of cable maintenance.Therefore, how fast and effeciently to judge the insulation status of cable accessory, the insulation fault of diagnosing cable annex timely and accurately, has very important realistic meaning.
By the local discharging level of detection streamer inside, can indirectly reflect the insulation status of XLPE cable, be a kind of to the effectively online detection means of cable insulation.At present, in order to realize the detection that cable inside office is put, on-line monitoring and two kinds of modes of band electro-detection are mainly adopted, on-line monitoring is mainly to put monitoring device by fixed installation office on cable, continue to monitor the Partial discharge signal of cable inside, mainly adopt portable charged checkout equipment, in the situation that cable moves, cable is carried out to office with electro-detection and put detection, the former system is huge, install complicated, with high costs, the latter's workload for operation maintenance staff is very large, and operation is more complicated, requires very high to staff's specialized capability.
Utility model content
The purpose of this utility model is to provide a kind of pick-up unit detecting for cable insulation, and it is large that it can solve general charged testing amount, the problem of complicated operation.
To achieve these goals, the utility model proposes a kind of Handheld detection device detecting for cable insulation, it comprises:
Local discharge sensor;
Hand-held sense terminals, it is connected with local discharge sensor, and described sense terminals comprises signal condition module, data acquisition module, data processing module, memory module, display device and power module; Wherein said signal condition module is connected with local discharge sensor data, and the signal that is received from local discharge sensor is nursed one's health to processing; Described data acquisition module is connected with signal condition module, gathers local discharge signal; Described data processing module is connected with data acquisition module, removes the interference in local discharge signal; Described memory module is connected with data processing module, stores treated local discharge signal; Described display device is connected with data processing module, for showing treated local discharge signal; Described power module provides power supply for sense terminals.
In above-mentioned Handheld detection device, high-frequency current signal when local discharge sensor, for obtaining cable inside, shelf depreciation occurs; Hand-held sense terminals is can be for the sense terminals equipment that integrates signal condition, data acquisition, data processing, data storage and Presentation Function of operating personnel's hand-held, and itself and described local discharge sensor form a complete cable insulation pick-up unit system.The conditioning processing of described signal condition module comprises the processing of pre-filtering, controllable gain, the discharge information in the signal that its extraction receives, and adjusted to the scope that data acquisition module can be processed.
Further, in Handheld detection device described in the utility model, described local discharge sensor comprises:
Two metal shielding boxes that hinged split type half box is spliced to form, described metal shielding box has inner and outer wall, between described inner and outer wall, forms cavity, offers the groove extending along the circumferential direction of inwall on described inwall;
Two magnetic core splits magnetic core forming that is stitched together, described each magnetic core split correspondence is located in the cavity of each split type half box, in one of them of these two magnetic core splits, is wound with coil;
Air gap gasket, it is located between the Mosaic face of described two magnetic core splits;
Insulation spacer, it is located between described metal shielding box and magnetic core;
Plug, it is fixed on the outer wall of described metal shielding box, and it is electrically connected with coil.
Above-mentioned local discharge sensor is High Frequency Current Sensor, and two hinged split type half box structure can be directly installed near the cable body on the ground wire of cable accessory or cable accessory easily.
Above-mentioned local discharge sensor is the one of local discharge sensor that the technical program can be applicable, need to be appreciated that, what other were suitable can realize, and local discharge sensor that local discharge signal detects also can be for the technical program.
Further, in Handheld detection device described in the utility model, described hand-held sense terminals also comprises data acquisition and control module, and it is connected with described data acquisition module, controls the data acquisition of data acquisition module.For example, data acquisition and control module is in charge of data acquisition, and data acquisition parameters is configured.
Further, in Handheld detection device described in the utility model, described hand-held sense terminals also comprises data transmission interface.
Further, in above-mentioned Handheld detection device, described data transmission interface is USB interface.
Other external equipments, for example computing machine can be shared data with Handheld detection device at any time by USB interface, user can be saved to the detection data of Handheld detection device in external equipment by USB interface, thereby enquiry of historical data easily, for the follow-up diagnostic analysis result accurately that provides more is comprehensively offered help.
Further, in Handheld detection device described in the utility model, described hand-held sense terminals also comprises charging inlet.
Further, in Handheld detection device described in the utility model, described display device comprises the pilot lamp that several show different colours, the local discharge signal size that each pilot lamp is corresponding different.
Further, in Handheld detection device described in the utility model, described display device comprises human-computer interaction interface.
Further, in Handheld detection device described in the utility model, the coil of described local discharge sensor is Rogowski coil.
Handheld detection device described in the utility model, can detect cable local discharge at the scene easily, and work efficiency is high, does not affect the normal operation of cable, has significantly reduced volume and the operation easier of equipment, and testing result reads conveniently.In preferred technical scheme, it can also charge at any time, and by USB interface and external equipment communication, has good practical value.
Accompanying drawing explanation
Fig. 1 is the structural representation block diagram of the hand-held sense terminals of Handheld detection device described in the utility model under a kind of embodiment.
Fig. 2 is the process flow block diagram of the data processing module of the hand-held sense terminals of Handheld detection device described in the utility model under a kind of embodiment.
Fig. 3 is the structural representation of the local discharge sensor of Handheld detection device described in the utility model under a kind of embodiment.
Fig. 4 be Fig. 3 partly cut open left view.
Fig. 5 is that the one of Handheld detection device described in the utility model under a kind of embodiment used view.
Fig. 6 is that the another kind of Handheld detection device described in the utility model under a kind of embodiment uses view.
Embodiment
Below in conjunction with Figure of description and specific embodiment, Handheld detection device described in the utility model is made to further explanation and explanation.
Fig. 1 has illustrated the structural representation block diagram of the hand-held sense terminals of Handheld detection device described in the utility model under a kind of embodiment.Fig. 2 has illustrated the process flow block diagram of data processing module of the hand-held sense terminals of Handheld detection device described in the utility model under a kind of embodiment.
As shown in Figure 1, the hand-held sense terminals of the present embodiment comprises signal condition module 11, data acquisition module 12, data processing module 13, memory module 14, display device 15, power module 16 and data acquisition and control module 17, and for the USB interface of data transmission and the charging inlet for charging, wherein: signal condition module 11 can be connected with local discharge sensor data, the signal that is received from local discharge sensor is nursed one's health to processing, this conditioning processing comprises does pre-filtering by the signal that is received from local discharge sensor, the processing of controllable gain, extraction is received from the discharge information in the signal of local discharge sensor, and adjusted to the scope that data acquisition module 12 can be processed, data acquisition module 12 is connected with signal condition module 11, gathers local discharge signal, data acquisition module 12 the highest sample frequency 100kHz, AD resolution 10bit, AC coupling input mode, data acquisition and control module 17 is connected with data acquisition module 12, controls the data acquisition of data acquisition module 12, and data acquisition parameters is configured, data processing module 13 is connected with data acquisition module 12, it adopts the Suppression of narrow band interference algorithm based on FFT and the denoising algorithm based on small echo respectively the arrowband often occurring in the signal detecting to be disturbed and white noise interference is rejected, for example as shown in Figure 2, data processing module in the present embodiment is taken up in order of priority local discharge signal is carried out to bandpass filtering, the processing of FFT filtering and three steps of wavelet filtering, in addition the local discharge signal data of removing after disturbing are converted into local discharge signal amplitude by data processing module 13, and judge shelf depreciation degree by comparison local discharge signal amplitude size, call for memory module 14 and display device 15, memory module 14 is connected with data processing module 13, and treated local discharge signal is saved as to data file, display device 15 is connected with data processing module 13, be used for showing local discharge signal amplitude and local degree of discharge, for example display device can comprise the LED lamp that represents different shelf depreciation degree, for example LED lamp can according to shelf depreciation degree from shallow to deep respectively correspondence be set to green, orange 1, orange 2, red 1, red 2, red 3, red 4 totally seven grades, wherein, green expression shelf depreciation degree is little, equipment is normal, red 4 represent that shelf depreciation degree is very large, there is serious insulation hidden danger in equipment, thereby facilitate user intuitively to obtain shelf depreciation degree information, this external display device 15 also comprises can human-computer interaction interface, waveform and the amplitude of can convenient operation personnel directly observing local discharge signal from human-computer interaction interface, power module 16 provides power supply for sense terminals.
Fig. 3 has shown the structural representation of the local discharge sensor that the present embodiment adopts.Fig. 4 be Fig. 3 partly cut open left view.
As shown in Figure 3 and Figure 4, this local discharge sensor comprises: two metal shielding boxes 21 that hinged split type half box is spliced to form, metal shielding box 21 has inner and outer wall, forms cavity between inner and outer wall, offers the groove C extending along the circumferential direction of inwall on inwall; Two magnetic core splits magnetic core 22 forming that is stitched together, each magnetic core split correspondence is located in the cavity of each split type half box, is wound with Rogowski coil in one of them of these two magnetic core splits; Air gap gasket 23, it is located between the Mosaic face of two magnetic core splits; Insulation spacer 24, it is located between metal shielding box 21 and magnetic core 22; Plug 25, it is fixed on the outer wall of metal shielding box 21, and it is electrically connected with Rogowski coil.
Fig. 5 and Fig. 6 have shown respectively two kinds of use states of a kind of embodiment of Handheld detection device described in the utility model.
As can be known from Fig. 5 and Fig. 6, hand-held sense terminals 1 is connected with local discharge sensor 2.As shown in Figure 5, for Voltage Cable Lines Construction more than 110kV voltage level, it is generally single cored structure, and the ground wire of each phase cable is ground connection respectively, now can on three-phase ground wire 3 separately, be socketed local discharge sensor 2, carries out the detection of local discharge signal.As shown in Figure 6, for the mesolow cable line below 110kV electric pressure, it generally adopts three-core structure, now can, at three-phase terminal body or the upper socket local discharge sensor 2 of ground wire 3 ', carry out the detection of local discharge signal.
Be noted that above enumerate only for specific embodiment of the utility model, obviously the utility model is not limited to above embodiment, has many similar variations thereupon.If all distortion that those skilled in the art directly derives or associates from the disclosed content of the utility model, all should belong to protection domain of the present utility model.
Claims (9)
1. the Handheld detection device detecting for cable insulation, is characterized in that, comprising:
Local discharge sensor;
Hand-held sense terminals, it is connected with local discharge sensor, and described sense terminals comprises signal condition module, data acquisition module, data processing module, memory module, display device and power module; Wherein said signal condition module is connected with local discharge sensor data, and the signal that is received from local discharge sensor is nursed one's health to processing; Described data acquisition module is connected with signal condition module, gathers local discharge signal; Described data processing module is connected with data acquisition module, removes the interference in local discharge signal; Described memory module is connected with data processing module, stores treated local discharge signal; Described display device is connected with data processing module, for showing treated local discharge signal; Described power module provides power supply for sense terminals.
2. Handheld detection device as claimed in claim 1, is characterized in that, described local discharge sensor comprises:
Two metal shielding boxes that hinged split type half box is spliced to form, described metal shielding box has inner and outer wall, between described inner and outer wall, forms cavity, offers the groove extending along the circumferential direction of inwall on described inwall;
Two magnetic core splits magnetic core forming that is stitched together, described each magnetic core split correspondence is located in the cavity of each split type half box, in one of them of these two magnetic core splits, is wound with coil;
Air gap gasket, it is located between the Mosaic face of described two magnetic core splits;
Insulation spacer, it is located between described metal shielding box and magnetic core;
Plug, it is fixed on the outer wall of described metal shielding box, and it is electrically connected with coil.
3. Handheld detection device as claimed in claim 1, is characterized in that, described hand-held sense terminals also comprises data acquisition and control module, and it is connected with described data acquisition module, controls the data acquisition of data acquisition module.
4. Handheld detection device as claimed in claim 1, is characterized in that, described hand-held sense terminals also comprises data transmission interface.
5. Handheld detection device as claimed in claim 4, is characterized in that, described data transmission interface is USB interface.
6. Handheld detection device as claimed in claim 1, is characterized in that, described hand-held sense terminals also comprises charging inlet.
7. Handheld detection device as claimed in claim 1, is characterized in that, described display device comprises the pilot lamp that several show different colours, the local discharge signal size that each pilot lamp is corresponding different.
8. Handheld detection device as claimed in claim 1, is characterized in that, described display device comprises human-computer interaction interface.
9. Handheld detection device as claimed in claim 1, is characterized in that, the coil of described local discharge sensor is Rogowski coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759679.3U CN203630283U (en) | 2013-11-26 | 2013-11-26 | Hand-held detection device used for cable insulation detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759679.3U CN203630283U (en) | 2013-11-26 | 2013-11-26 | Hand-held detection device used for cable insulation detection |
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| Publication Number | Publication Date |
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| CN203630283U true CN203630283U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320759679.3U Expired - Lifetime CN203630283U (en) | 2013-11-26 | 2013-11-26 | Hand-held detection device used for cable insulation detection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535909A (en) * | 2015-01-12 | 2015-04-22 | 国家电网公司 | Crosslinked polyethylene power cable accessory partial discharge pattern recognition system |
| CN106353648A (en) * | 2016-08-30 | 2017-01-25 | 浙江新图维电子科技有限公司 | Comprehensive partial discharge monitoring device and method |
| CN107219474A (en) * | 2016-04-22 | 2017-09-29 | 李万 | A kind of multifunction power network patrol device |
| CN113030655A (en) * | 2021-01-29 | 2021-06-25 | 国网浙江桐庐县供电有限公司 | Hand-held type partial discharge detection device |
-
2013
- 2013-11-26 CN CN201320759679.3U patent/CN203630283U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535909A (en) * | 2015-01-12 | 2015-04-22 | 国家电网公司 | Crosslinked polyethylene power cable accessory partial discharge pattern recognition system |
| CN107219474A (en) * | 2016-04-22 | 2017-09-29 | 李万 | A kind of multifunction power network patrol device |
| CN107219474B (en) * | 2016-04-22 | 2019-10-22 | 林立荣 | A kind of multifunction power network patrol device |
| CN106353648A (en) * | 2016-08-30 | 2017-01-25 | 浙江新图维电子科技有限公司 | Comprehensive partial discharge monitoring device and method |
| CN106353648B (en) * | 2016-08-30 | 2024-04-09 | 浙江新图维电子科技有限公司 | Comprehensive partial discharge monitoring method |
| CN113030655A (en) * | 2021-01-29 | 2021-06-25 | 国网浙江桐庐县供电有限公司 | Hand-held type partial discharge detection device |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140604 |