CN112731075B - Intelligent sleeve with integrated structure built in sensor - Google Patents
Intelligent sleeve with integrated structure built in sensor Download PDFInfo
- Publication number
- CN112731075B CN112731075B CN202011498347.5A CN202011498347A CN112731075B CN 112731075 B CN112731075 B CN 112731075B CN 202011498347 A CN202011498347 A CN 202011498347A CN 112731075 B CN112731075 B CN 112731075B
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- Prior art keywords
- sleeve
- sensor
- flange
- end screen
- guide rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/60—Composite insulating bodies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to an intelligent sleeve with an integrated structure built in a sensor, wherein after a sleeve end screen outgoing line penetrates through two sensors, the outgoing line is welded on a fixed guide rod, the fixed guide rod is fixed on a sleeve flange cavity and an end cover by an end screen small sleeve, and finally the sleeve end screen outgoing line is reliably grounded through an end cover; a sensor space position is reserved in the sleeve flange, and the sensor is arranged in the sleeve flange and is integrated with the sleeve; and the signal wire for measuring the leakage current of the sleeve and the local discharge pulse signal wire are respectively led out by two interfaces. The invention can monitor the running state signal of the sleeve on line without modifying the end screen structure, and realize the intelligent perception of the running state of the sleeve. The sleeve flange is modified in a mode of arranging the sensor in the sleeve, the sensor and the sleeve are combined integrally, and the potential safety hazard that the end screen is not reliably grounded when the sleeve is monitored by modifying the end screen of the sleeve and a measuring terminal structure in the traditional sleeve is avoided.
Description
Technical Field
The invention relates to the technical field of design of high-voltage sleeves of power transmission and transformation equipment, in particular to an intelligent sleeve with a built-in integrated structure of a sensor.
Background
The scale of the power system is increasingly huge, the high-voltage bushing as a current-carrying conductor passes through a box body or a wall body with different potentials, plays roles of insulation and mechanical support, is one of key devices for ensuring the safe and stable operation of the system, and the intelligent self-diagnosis capability of the high-voltage bushing has great influence on the safe operation of a power grid and the reliability of power supply. The traditional casing pipe overhaul is carried out a regular overhaul system for a long time, the defects and faults of the casing pipe are also found and eliminated in time, and a certain positive effect is achieved. However, with the improvement of the level of power supply technical equipment, the original maintenance mode is not suitable for the operation requirement of the existing casing. At present, an operation unit has strong application requirements on a high-voltage bushing state sensing technology and products, but the existing bushing online monitoring technology in the market has the problems of large measurement error, weak anti-interference capability, poor environmental adaptability and the like, and meanwhile, the bushing end screen needs to be modified, so that faults such as poor end screen grounding, body wetting, false alarm and missing report of a system and the like often occur, and the operation requirement cannot be met. The invention provides a design method of an intelligent sleeve with a built-in integrated structure of a sensor, which has the main technical difficulties that (1) the structure design of a tail screen outgoing line ensures the reliable grounding of the tail screen outgoing line; (2) the structural design of the flange cavity structure needs to be customized according to the structural size of the sensor; (3) the design of leading out the signal wire of the sensor needs to consider the mutual interference between signals and the functional requirements of users on the intelligent sleeve.
Disclosure of Invention
The invention aims to provide an intelligent sleeve with a built-in integrated structure of a sensor, which can monitor a sleeve running state signal on line and realize intelligent sensing of the sleeve running state under the condition of not modifying a tail screen structure.
In order to achieve the above purpose, the technical scheme adopted by the invention specifically comprises the following steps:
the utility model provides an intelligent sleeve pipe of built-in integral structure of sensor, the sleeve pipe includes that internal insulation electric capacity core, external insulation adopt the compound hollow insulating tube, the casing flange and the metal spare part of gluing the full skirt, the metal spare part includes conducting rod, equalizer ring and wiring board, the conducting rod is in the internal insulation core, it is fixed that the internal insulation core penetrates the cementing in the flange, the compound hollow insulating tube of external insulation adopts bolted connection fixed with the casing flange, installs the metal part at the sleeve pipe both ends at last, still be provided with the signal line and the pulse signal line interface of putting of measuring leakage current on the sleeve pipe, its characterized in that:
after the sleeve end screen outgoing line penetrates through the two sensors, the outgoing line is welded on a fixed guide rod, the guide rod is fixed on the sleeve flange cavity and the end cover through an end screen small sleeve, and finally the sleeve end screen outgoing line is reliably grounded through the end cover.
According to the scheme, the spatial position of the sensor is reserved in the sleeve flange, the sensor is arranged in the sleeve flange and is integrated with the sleeve, and the potential safety hazard that the end screen is not reliably grounded when the sleeve is monitored by modifying the end screen of the sleeve and measuring a terminal structure in the traditional sleeve is avoided.
Preferably, the signal line for measuring leakage current and the partial discharge pulse signal line of the bushing are respectively led out through two interfaces, the signal line interface for measuring leakage current can be connected by measuring dielectric loss and capacitance, and the partial discharge pulse signal line interface can be connected by measuring partial discharge, so that mutual interference between two signals is avoided, and a user can conveniently select and configure the function of the intelligent bushing.
Compared with the prior art, the invention has the beneficial effects that:
the invention can monitor the running state signal of the sleeve on line without modifying the end screen structure, and realize the intelligent perception of the running state of the sleeve. The signal line for measuring leakage current of the intelligent sleeve and the partial discharge pulse signal line are respectively led out by two interfaces, the interface of the signal line for measuring leakage current can be connected by measuring dielectric loss and capacitance, and the interface of the partial discharge pulse signal line can be connected by measuring partial discharge, so that the mutual interference between two signals is avoided, and the function of configuring the intelligent sleeve by a user can be conveniently selected; through the built-in mode of the sensor, the sleeve flange is modified, the sensor and the sleeve are integrally combined, and the potential safety hazard that the end screen is not reliably grounded when the traditional sleeve is used for monitoring the sleeve by modifying the end screen of the sleeve and measuring a terminal structure is avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a partial schematic view of the structure of the sleeve flange of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:
FIG. 1 is a schematic diagram of the overall structure of the present invention, wherein a modified bushing flange is located at a bushing end shield connection position, and a lead-out wire connected from a bushing capacitor core end shield penetrates through the bushing flange; as shown in fig. 2, which is a partial schematic view of an intelligent bushing flange structure, a sensor can be built in the modified flange and a sensor signal line leading-out interface is provided, and a bushing core end screen leading-out wire penetrates through the sensor and then is connected with the flange and is reliably grounded.
And the end screen outgoing line penetrates through the two sensors, is welded on the fixed guide rod and is led out through the fixed guide rod, the conducting rod is fixed on the flange cavity and the end cover by using the end screen small sleeve, and finally the conducting rod is reliably grounded through the end cover.
As the optimization of the scheme, the spatial position of the sensor is reserved in the sleeve flange, the sensor is arranged in the sleeve flange and is integrated with the sleeve, and the potential safety hazard that the end screen is not reliably grounded when the traditional sleeve is used for monitoring the sleeve by transforming the end screen of the sleeve and measuring a terminal structure is avoided.
The signal line and the partial discharge pulse signal line for measuring leakage current are respectively led out through two interfaces, dielectric loss and capacitance are required to be measured and can be connected with the signal line interface for measuring leakage current, partial discharge amount is required to be measured and can be connected with the partial discharge pulse signal line interface, mutual interference between two signals is avoided, and a user can conveniently select and configure the intelligent sleeve.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (2)
1. The utility model provides an intelligent sleeve pipe of built-in integral structure of sensor, the sleeve pipe includes that internal insulation electric capacity core, external insulation adopt the compound hollow insulating tube, the casing flange and the metal spare part of gluing the full skirt, the metal spare part includes conducting rod, equalizer ring and wiring board, the conducting rod is in the internal insulation core, it is fixed that the internal insulation core penetrates the cementing in the flange, the compound hollow insulating tube of external insulation adopts bolted connection fixed with the casing flange, installs the metal part at the sleeve pipe both ends at last, still be provided with on the sleeve pipe and measure the signal line of revealing current and put pulse signal line interface and sleeve pipe end screen lead-out wire, its characterized in that: after the sleeve end screen outgoing line passes through the two sensors, the outgoing line is welded on a fixed guide rod, the fixed guide rod is fixed on the sleeve flange cavity and the end cover by using an end screen small sleeve, and finally the fixed guide rod is reliably grounded through the end cover; the space position of the sensor is reserved in the sleeve flange, and the sensor is arranged in the sleeve flange and is integrated with the sleeve.
2. The smart sleeve of integrated sensor-in-one construction as claimed in claim 1, wherein: and the signal wire for measuring the leakage current of the sleeve and the local discharge pulse signal wire are respectively led out by two interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011498347.5A CN112731075B (en) | 2020-12-17 | 2020-12-17 | Intelligent sleeve with integrated structure built in sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011498347.5A CN112731075B (en) | 2020-12-17 | 2020-12-17 | Intelligent sleeve with integrated structure built in sensor |
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| Publication Number | Publication Date |
|---|---|
| CN112731075A CN112731075A (en) | 2021-04-30 |
| CN112731075B true CN112731075B (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011498347.5A Active CN112731075B (en) | 2020-12-17 | 2020-12-17 | Intelligent sleeve with integrated structure built in sensor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985166A (en) * | 2021-10-19 | 2022-01-28 | 国网重庆市电力公司电力科学研究院 | Sleeve and transformer winding state monitoring device based on pulse frequency response method |
Citations (8)
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|---|---|---|---|---|
| CN201600986U (en) * | 2009-12-04 | 2010-10-06 | 戴海永 | Sleeve combined with sensor |
| CN203117299U (en) * | 2013-03-07 | 2013-08-07 | 北京华电云通电力技术有限公司 | Integrative sensor for monitoring dielectric loss of power transformer bushing |
| CN203607788U (en) * | 2013-11-11 | 2014-05-21 | 山东华信电气股份有限公司 | Novel wall bushing |
| CN204205076U (en) * | 2014-09-26 | 2015-03-11 | 国家电网公司 | A kind of main transformer end shield of high-voltage bushing is used for the earthing device of on-line monitoring |
| CN204330914U (en) * | 2014-12-09 | 2015-05-13 | 北京必可测科技股份有限公司 | A kind of Transformer Bushing Tap monitoring device |
| CN105137152A (en) * | 2015-08-21 | 2015-12-09 | 华北电力大学 | Ground lead current signal monitoring sensor for end screen of transformer bushing |
| CN107422231A (en) * | 2017-06-14 | 2017-12-01 | 西安交通大学 | A kind of transformer superfrequency local discharge detection device |
| CN210742376U (en) * | 2019-09-29 | 2020-06-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Sleeve tap current and voltage monitoring device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE515387C2 (en) * | 1995-05-02 | 2001-07-23 | Abb Research Ltd | Monitoring of internal partial discharges in a power transformer |
| KR101038924B1 (en) * | 2008-12-30 | 2011-06-07 | 주식회사 효성 | Manufacturing method of composite bushing of gas insulated switchgear and partial discharge diagnostic system for composite bushing of gas insulated switchgear |
-
2020
- 2020-12-17 CN CN202011498347.5A patent/CN112731075B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201600986U (en) * | 2009-12-04 | 2010-10-06 | 戴海永 | Sleeve combined with sensor |
| CN203117299U (en) * | 2013-03-07 | 2013-08-07 | 北京华电云通电力技术有限公司 | Integrative sensor for monitoring dielectric loss of power transformer bushing |
| CN203607788U (en) * | 2013-11-11 | 2014-05-21 | 山东华信电气股份有限公司 | Novel wall bushing |
| CN204205076U (en) * | 2014-09-26 | 2015-03-11 | 国家电网公司 | A kind of main transformer end shield of high-voltage bushing is used for the earthing device of on-line monitoring |
| CN204330914U (en) * | 2014-12-09 | 2015-05-13 | 北京必可测科技股份有限公司 | A kind of Transformer Bushing Tap monitoring device |
| CN105137152A (en) * | 2015-08-21 | 2015-12-09 | 华北电力大学 | Ground lead current signal monitoring sensor for end screen of transformer bushing |
| CN107422231A (en) * | 2017-06-14 | 2017-12-01 | 西安交通大学 | A kind of transformer superfrequency local discharge detection device |
| CN210742376U (en) * | 2019-09-29 | 2020-06-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Sleeve tap current and voltage monitoring device |
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| Publication number | Publication date |
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| CN112731075A (en) | 2021-04-30 |
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