CN104714157A - High-sensitivity spiral capacity coupling sensor and installing method thereof - Google Patents
High-sensitivity spiral capacity coupling sensor and installing method thereof Download PDFInfo
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- CN104714157A CN104714157A CN201510056245.0A CN201510056245A CN104714157A CN 104714157 A CN104714157 A CN 104714157A CN 201510056245 A CN201510056245 A CN 201510056245A CN 104714157 A CN104714157 A CN 104714157A
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Abstract
The invention discloses a high-sensitivity spiral capacity coupling sensor and an installing method thereof. The high-sensitivity spiral capacity coupling sensor comprises metal copper sheet electrodes, an insulating spacer, a ground electrode and a sensor body. The installation method comprises the steps of adhering the metal copper sheet electrodes to the insulating spacer to form the capacity coupling sensor; winding the capacity coupling sensor around an outer shielding layer of a cable in the clockwise direction, wherein it is ensured that the insulating spacer is well bonded with the outer shielding layer; leading the metal copper sheet electrodes out through a sensor outgoing line after spiral winding is conducted by three circles, wherein the metal copper sheet electrodes are 44 mm wide, and the distance between the metal copper sheet electrodes is 45 mm. According to the high-sensitivity spiral capacity coupling sensor, spectral response peak value reaches 1400 mV, center frequency is 17 MHz, and bandwidth is 10 MHz; spectral response amplitude value and bandwidth can be increased effectively, sensitivity of partial discharge detection of the capacity coupling sensor can be improved, and the defects of existing capacity coupling sensors that spectral response amplitude value and bandwidth are small are overcome.
Description
Technical field
The invention belongs to Voltage Cable Lines Construction Partial Discharge Detecting Technology field, particularly relate to capacitive coupled sensors and the installation method of a kind of high sensitivity spiral fashion layout.
Background technology
Voltage Cable Lines Construction is different from other primary equipment (transformer, switch), cable body makes in factory, and cable accessory will be installed at the scene, site operation quality is by the impact of artificial technique, installation environment, the quality control requirement in factory may do not reached, so cable accessory often becomes the thin spot of cable line.According to statistics, more than 95% of cable line fault causes due to cable accessory.For the Voltage Cable Lines Construction run.Voltage Cable Lines Construction Partial Discharge Detection is the effective means finding cable accessory insulation hidden danger, and existing technology comprises High Frequency Current Sensor Partial Discharge Detection, capacitive coupled sensors Partial Discharge Detection, ultrasound wave Partial Discharge Detection and ultra high frequency PD detection.Relative to other several detection method for local discharge, capacitive coupled sensors Partial Discharge Detection is arranged on cable accessory inside due to sensor, effectively can shield the interference of extraneous electromagnetic signals, the insulation hidden danger of cable accessory inside therefore effectively can be detected.
But existing capacitive coupled sensors exists, and frequency response amplitude is little, the shortcoming of narrow bandwidth.
Summary of the invention
The capacitive coupled sensors that the object of the embodiment of the present invention is to provide a kind of high sensitivity spiral fashion to arrange and installation method, be intended to solve existing capacitive coupled sensors and have that frequency response amplitude is little, the problem of narrow bandwidth.
The embodiment of the present invention is achieved in that the capacitive coupled sensors that a kind of high sensitivity spiral fashion is arranged, the capacitive coupled sensors that this high sensitivity spiral fashion is arranged comprises: metallic copper plate electrode, insulation spacer, ground electrode, sensor;
Metallic copper plate electrode is arranged on insulation spacer, and insulation spacer is arranged on ground electrode, sensor connection metal copper plate electrode, the wide 44mm of metallic copper plate electrode, and metal copper sheet spacing equals 45mm.
Further, capacitive coupled sensors is arranged in cable external shield according to clockwise direction is spiral, is drawn by the extension line of sensor after spiral wound circle.
Further, when metal copper sheet spacing equals 45mm, capacitive coupled sensors spectral response peak value reaches 1400mV, and centre frequency is 17MHz, and bandwidth is 10MHz.
Another object of the embodiment of the present invention is the installation method of the capacitive coupled sensors providing a kind of high sensitivity spiral fashion to arrange, the installation method of the capacitive coupled sensors that this high sensitivity spiral fashion is arranged comprises the following steps:
Step one, is pasted onto on insulation spacer by metallic copper plate electrode, forms capacitive coupled sensors;
Step 2, is wound around capacitive coupled sensors according to clockwise direction and makes on cable external shielding layer, guarantee insulation spacer and external shielding layer excellent bonds;
Step 3, metallic copper plate electrode is wide chooses 44mm, and spacing P chooses 45mm, is drawn after spiral wound 3 encloses by sensor extension line.
The capacitive coupled sensors that high sensitivity spiral fashion provided by the invention is arranged and installation method, capacitive coupled sensors is arranged in cable external shield according to clockwise direction is spiral, the wide 44mm of metallic copper plate electrode, spacing P=45mm, the capacitive coupled sensors that spiral fashion is arranged, spectral response peak value reaches 1400mV, and centre frequency is 17MHz, and bandwidth is 10MHz; Effectively can improve amplitude and the bandwidth of frequency response, improve the sensitivity of capacitive coupled sensors Partial Discharge Detection, overcome existing capacitive coupled sensors and have that frequency response amplitude is little, the problem of narrow bandwidth.
Accompanying drawing explanation
Fig. 1 is the capacitive coupled sensors structural representation of the high sensitivity spiral fashion layout that the embodiment of the present invention provides;
Fig. 2 is the installation method process flow diagram of the capacitive coupled sensors of the high sensitivity spiral fashion layout that the embodiment of the present invention provides;
Fig. 3 is the installment state schematic diagram of the capacitive coupled sensors of the high sensitivity spiral fashion layout that the embodiment of the present invention provides;
In figure: 1, metallic copper plate electrode; 2, insulation spacer; 3, ground electrode; 4, sensor.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
As shown in Figure 1, the high sensitivity spiral fashion of the embodiment of the present invention capacitive coupled sensors of arranging is primarily of metallic copper plate electrode 1, insulation spacer 2, ground electrode 3;
Metallic copper plate electrode 1 is arranged on insulation spacer 2, and insulation spacer 2 is arranged on ground electrode 3;
As shown in Figure 2, the present invention also comprises sensor 4; Capacitive coupled sensors shown in Fig. 1 is arranged in cable external shield according to clockwise direction is spiral, the wide 44mm of metallic copper plate electrode 1, be taken as 23mm, 45mm and 68mm respectively shown in spacing P Fig. 3 spectral response figure, drawn by the extension line of sensor 4 after spiral wound 3 encloses.
As shown in Figure 3, the installation method of the capacitive coupled sensors of the high sensitivity spiral fashion layout of the embodiment of the present invention comprises the following steps:
S101: be pasted onto on insulation spacer by metallic copper plate electrode, forms capacitive coupled sensors;
S102: capacitive coupled sensors is wound around according to clockwise direction and makes on cable external shielding layer, guarantee insulation spacer and external shielding layer excellent bonds;
S103: metallic copper plate electrode is wide chooses 44mm, and spacing P chooses 45mm, is drawn after spiral wound 3 encloses by sensor extension line.
By capacitive coupled sensors spectral response, when spacing P equals 45mm, capacitive coupled sensors spectral response characteristic is best, and spectral response peak value reaches 1400mV, and centre frequency is 17MHz, and bandwidth is 10MHz.The spectral response peak value of traditional capacitive coupled sensors is less than 1000mV usually, and bandwidth also only has about 5MHz; This capacitive coupled sensors, effectively can improve amplitude and the bandwidth of frequency response, improve the sensitivity of capacitive coupled sensors Partial Discharge Detection.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a capacitive coupled sensors for high sensitivity spiral fashion layout, is characterized in that, the capacitive coupled sensors that this high sensitivity spiral fashion is arranged comprises: metallic copper plate electrode, insulation spacer, ground electrode, sensor;
Metallic copper plate electrode is arranged on insulation spacer, and insulation spacer is arranged on ground electrode, sensor connection metal copper plate electrode, the wide 44mm of metallic copper plate electrode, and metal copper sheet spacing equals 45mm.
2. the capacitive coupled sensors of high sensitivity spiral fashion layout as claimed in claim 1, be is characterized in that, be arranged in cable external shield, drawn capacitive coupled sensors after spiral wound circle by the extension line of sensor according to clockwise direction is spiral.
3. the capacitive coupled sensors of high sensitivity spiral fashion layout as claimed in claim 1, it is characterized in that, when metal copper sheet spacing equals 45mm, capacitive coupled sensors spectral response peak value reaches 1400mV, and centre frequency is 17MHz, and bandwidth is 10MHz.
4. an installation method for the capacitive coupled sensors of high sensitivity spiral fashion layout, is characterized in that, the installation method of the capacitive coupled sensors that this high sensitivity spiral fashion is arranged comprises the following steps:
Step one, is pasted onto on insulation spacer by metallic copper plate electrode, forms capacitive coupled sensors;
Step 2, is wound around capacitive coupled sensors according to clockwise direction and makes on cable external shielding layer, guarantee insulation spacer and external shielding layer excellent bonds;
Step 3, metallic copper plate electrode is wide chooses 44mm, and spacing P chooses 45mm, is drawn after spiral wound 3 encloses by sensor extension line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510056245.0A CN104714157B (en) | 2015-02-04 | 2015-02-04 | A kind of capacitive coupled sensors and installation method of high sensitivity helical form arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510056245.0A CN104714157B (en) | 2015-02-04 | 2015-02-04 | A kind of capacitive coupled sensors and installation method of high sensitivity helical form arrangement |
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| CN104714157A true CN104714157A (en) | 2015-06-17 |
| CN104714157B CN104714157B (en) | 2018-11-06 |
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| CN201510056245.0A Active CN104714157B (en) | 2015-02-04 | 2015-02-04 | A kind of capacitive coupled sensors and installation method of high sensitivity helical form arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630696A (en) * | 2020-12-07 | 2021-04-09 | 广西电网有限责任公司电力科学研究院 | Capacitive screen coupling simulation testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097399U (en) * | 1991-08-06 | 1992-02-26 | 密山市智能仪表厂 | Capacity sensor |
| CN101324186A (en) * | 2008-07-04 | 2008-12-17 | 西安交通大学 | Device for measuring oil, gas, water three phase flow containing rate |
| CN202649374U (en) * | 2012-07-10 | 2013-01-02 | 浙江图维电力科技有限公司 | Inputting or detecting device based on capacitive sensing non-contact signals |
| CN202947989U (en) * | 2012-11-21 | 2013-05-22 | 内蒙古科技大学 | Spiral electrode capacitive sensor |
| CN103197210A (en) * | 2013-03-28 | 2013-07-10 | 国家电网公司 | Integrated sensor used for partial discharge detection of switch cabinet |
| CN203054162U (en) * | 2012-12-10 | 2013-07-10 | 铜仁供电局 | Comprehensive tester for partial discharge of high-voltage cable |
| CN204028288U (en) * | 2014-08-08 | 2014-12-17 | 国家电网公司 | The checkout equipment of cable local discharge and capacitive coupled sensors |
-
2015
- 2015-02-04 CN CN201510056245.0A patent/CN104714157B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097399U (en) * | 1991-08-06 | 1992-02-26 | 密山市智能仪表厂 | Capacity sensor |
| CN101324186A (en) * | 2008-07-04 | 2008-12-17 | 西安交通大学 | Device for measuring oil, gas, water three phase flow containing rate |
| CN202649374U (en) * | 2012-07-10 | 2013-01-02 | 浙江图维电力科技有限公司 | Inputting or detecting device based on capacitive sensing non-contact signals |
| CN202947989U (en) * | 2012-11-21 | 2013-05-22 | 内蒙古科技大学 | Spiral electrode capacitive sensor |
| CN203054162U (en) * | 2012-12-10 | 2013-07-10 | 铜仁供电局 | Comprehensive tester for partial discharge of high-voltage cable |
| CN103197210A (en) * | 2013-03-28 | 2013-07-10 | 国家电网公司 | Integrated sensor used for partial discharge detection of switch cabinet |
| CN204028288U (en) * | 2014-08-08 | 2014-12-17 | 国家电网公司 | The checkout equipment of cable local discharge and capacitive coupled sensors |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630696A (en) * | 2020-12-07 | 2021-04-09 | 广西电网有限责任公司电力科学研究院 | Capacitive screen coupling simulation testing device |
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| CN104714157B (en) | 2018-11-06 |
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