CN2689413Y - Acquiring apparatus for surface current leakage of high-voltage transmitting line insulator - Google Patents

Acquiring apparatus for surface current leakage of high-voltage transmitting line insulator Download PDF

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Publication number
CN2689413Y
CN2689413Y CN 200420041476 CN200420041476U CN2689413Y CN 2689413 Y CN2689413 Y CN 2689413Y CN 200420041476 CN200420041476 CN 200420041476 CN 200420041476 U CN200420041476 U CN 200420041476U CN 2689413 Y CN2689413 Y CN 2689413Y
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CN
China
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insulator
current
surface
high
leakage current
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CN 200420041476
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Chinese (zh)
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尹之仁
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尹之仁
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Priority to CN 200420041476 priority Critical patent/CN2689413Y/en
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Abstract

The utility model relates to an acquiring apparatus for the surface current leakage of the high-voltage transmitting line insulator. The flashover caused by the dirt of an insulator is still a serious safety hidden trouble in the high-pressure transmission network. At present, the low-pressure end of the insulator is provided with a collection unit of leakage current. Conduction current which flows through the surface of the insulator can be only acquired. However, the insulator can not collect stray current and capacitive current among other media, such as air, directing lines, etc. The acquisition mode of the leakage current on the surface of the insulator can greatly reduce the accuracy of the collection. The collection unit of the utility model is composed of a current collection ring and a drainage sheet, wherein, the current collection ring is arranged at the single-wire bowl head point of a ball head at the bottom of a high-voltage end porcelain bottle of the insulator, and the drainage sheet is arranged in an inner cavity of the porcelain bottle. Accordingly, the acquiring apparatus for the surface current leakage of the high-voltage transmitting line insulator can have a small impact by the natural influence factor and the magnetic interference. The impact damage of the current can be prevented. The leakage current on the surface of the insulator can be drained to the current collection ring and can be accurately acquired at utmost. The overall performance of current collection can be greatly improved.

Description

高压输电线路绝缘子表面泄漏电流的获取装置 High-voltage transmission line insulator surface leakage current acquisition means

一、技术领域 First, the technical field

:本实用新型涉及一种高压输电线路绝缘子表面泄漏电流的获取装置。 : The present invention relates to a high voltage transmission line obtaining means insulator surface leakage current.

二、技术背景:绝缘子污秽造成的闪络一直是高压输电网中的一个严重的安全隐患,目前通过在线检测绝缘子表面的泄漏电流来判断绝缘子的污秽程度,以预防污闪已经成为公认的好办法。 Second, the technical background: insulator contamination caused by flashover has been a serious security risk high-voltage transmission grid, is currently used to determine the extent of contamination insulators through online testing insulator leakage current surface, in order to prevent flashover has become recognized as a good way . 同时,准确获取绝缘子表面的泄漏电流将变得非常重要。 At the same time, accurately obtain the insulator surface leakage current will become very important.

绝缘子表面泄露电流是一般由传导电流、杂散电流以及绝缘子对空气、导线等其他介质之间的容性电流等构成。 Usually insulator surface leakage current is the current, and the stray current of the insulator between the capacitive current of air other media, like a conductive wire or the like. 目前,现有相关技术均是在绝缘子的低压端(末端)设置绝缘子表面泄漏电流的采集单元,获取绝缘子表面的泄漏电流。 Currently, the prior art are related to the low pressure side of the insulator (end) surface of the insulator disposed leakage current acquisition unit acquires the leakage current of the insulator surface.

在绝缘子低压端(末端)安装泄漏电流的采集单元,仅能获取流过绝缘子表面的传导电流,而绝缘子本身对空气、导线等其他介质之间的杂散电流和容性电流是采集不到的。 Mounted on low pressure side insulator (end) of the leakage current acquisition unit, acquiring only the current flowing through the conducting surface of the insulator, and the insulator and capacitive stray current itself among other media air current, wires and the like are collected less than . 这种绝缘子表面泄漏电流的获取方式,大大的降低了采集的准确性。 Obtaining such a surface of the insulator leakage current, greatly reduces the accuracy of the acquisition. 据相关电力文献了解,110kV输电线路瓷绝缘子在低压端侧的分布电压值大约为9-10kV,而高压端的分布电压值大约为19-20kV。 According to the relevant literature power understood, 110kV transmission line voltage porcelain insulators located in the low pressure end is approximately 9-10kV, the high voltage terminal and the voltage value distribution is approximately 19-20kV. 由于低压端和高压端的分布电压的不同所产生的泄漏电流值也完全不同。 Leakage current due to the different distribution of voltages of the low-pressure side and the high voltage terminal produced completely different.

三、发明内容 III. SUMMARY OF THE INVENTION

:本实用新型的目的在于提供一种采集数据准确的高压输电线路绝缘子表面泄漏电流的获取装置。 : The object of the invention is to provide a high voltage transmission line accurate data acquisition means insulator surface leakage current collection.

为达到上述目的,本实用新型采用的技术方案为:一种高压输电线路绝缘子表面泄漏电流的获取装置,其特殊之处在于:所述的泄漏电流的获取装置包括电流采集环2和引流片5,所述的电流采集环2设置在绝缘子高压端瓷瓶底下球头的单联碗头6处,所述的引流片5设置在瓷瓶3的内腔中。 To achieve the above object, the technical solution of the present invention is employed: a high-pressure transmission line insulator surface leakage current acquisition means, particularities wherein: said acquiring means comprises a leakage current of a current loop 2 and a drainage collection sheet 5 said current pickup ring 2 provided at the high voltage terminal insulator porcelain ball underneath the bowl at the head of a single joint 6, the sheet 5 is disposed drainage lumen 3 of porcelain.

上述的电流采集环2由电双层屏蔽罗高夫斯基线圈组成。 The above-described current detection by an electric double layer shielding loop 2 Rogowski coils.

上述的引流片5为一薄铜片,其大小与形状为与瓷瓶3的内腔相适应。 Above drainage sheet 5 is a thin copper sheet, which is the size and shape of the lumen 3 adapted vase.

本实用新型相对于现有技术,其优点如下:1、自然影响因素小。 The present invention relative to the prior art, the following advantages: 1, the natural effect of small factors. 本采集单元,设置在绝缘子高压端(首端)瓷瓶底下球头处,很好的避免了雨、雪等外界自然因素对采集单元本身的腐蚀损害。 This acquisition unit, high voltage insulator is set at the end (head end) porcelain ball at the bottom, good to avoid rain, snow and other external factors on the natural acquisition unit corrosion damage itself.

2、磁场干扰小。 2, a small magnetic interference. 该采集单元安装在瓷瓶底下球头处,远离导线,避免了受输电导线本身产生的电磁干扰影响;同时瓷瓶球头处本身的结构对采集单元是一种磁场保护,将电磁场干扰减少到最小。 The acquisition unit is mounted under the porcelain ball, away from the wire, to avoid electromagnetic interference produced by the transmission line itself; porcelain ball at the same time, the structure itself of the magnetic field on an acquisition unit, to reduce electromagnetic interference to a minimum.

3、防止大电流冲击损害。 3, avoiding high current shock damage. 当线路遭受雷击、绝缘子发生闪络以及人力破坏时,经过导线的故障电流不流经采集单元,不会对该采集单元造成大电流冲击损坏。 When the line is struck by lightning, insulator flashover and human destruction, after a fault current does not flow through the wire collecting unit, the collecting unit will not cause a large current shock damage.

4、采集数据准确。 4, accurate data collection. 当绝缘子发生闪络时,其表面的泄漏电流经常通过绝缘子高压端第一片瓷瓶对导线直接放电,从而大部分泄露电流不流过电流采集环,造成采集数据不准确。 When the insulator flashover occurs, the surface leakage current of the high voltage terminal insulator is often a first insulator sheet directly discharged through the pair of conductors, so that most of the leakage current does not flow through the current detection loop, resulting in inaccurate data collection. 通过安装电流引流片,可最大程度将绝缘子表面的泄漏电流引流至电流采集环并准确获取,大大提高了电流采集的全面性。 By mounting a current draining piece, can maximize the leakage current of the insulator to the surface of the drain current detection loop and obtain accurate, greatly improving the current collection of comprehensiveness.

四、附图说明 IV BRIEF DESCRIPTION

:图1为本实用新型局部剖面的结构示意图;五、具体实施方式:参见图1、本实用新型为一种高压输电线路绝缘子表面泄漏电流的获取装置,其包括电流采集环2和引流片5,所述的电流采集环2设置在绝缘子高压端瓷瓶底下球头的单联碗头6处,其由电双层屏蔽罗高夫斯基线圈组成,因而其很好的避免了雨、雪等外界自然因素对采集单元本身的腐蚀损害。 : FIG. 1 is a partial cross-sectional view of the invention structural diagram; V. DETAILED DESCRIPTION: Referring to Figure 1, the present invention as a high-voltage transmission line insulator surface leakage current acquisition device, which includes a current loop 2 and a drainage collection sheet 5 said current pickup ring 2 provided at the high voltage terminal insulator porcelain ball underneath the bowl at the head of a single joint 6, which is shielded by an electric double layer Rogowski coils, which thus good to avoid rain, snow and other external natural factors on the acquisition unit itself corrosion damage.

本实用新型的引流片5设置在瓷瓶3的内腔中,其为一薄铜片,大小与形状为与瓷瓶3的内腔相适应。 The present invention is provided in the interior of the drainage sheet 5 vase 3, which is a thin copper sheet, the size and shape to fit with the lumen 3 of the vase. 当绝缘子发生闪络时,其表面的泄漏电流经常通过绝缘子高压端第一片瓷瓶对导线直接放电,从而大部分泄露电流不流过电流采集环,造成采集数据不准确。 When the insulator flashover occurs, the surface leakage current of the high voltage terminal insulator is often a first insulator sheet directly discharged through the pair of conductors, so that most of the leakage current does not flow through the current detection loop, resulting in inaccurate data collection. 通过安装电流引流片,可最大程度将绝缘子表面的泄漏电流引流至电流采集环并准确获取,大大提高了电流采集的全面性。 By mounting a current draining piece, can maximize the leakage current of the insulator to the surface of the drain current detection loop and obtain accurate, greatly improving the current collection of comprehensiveness.

使用时,打开单联碗头与瓷瓶球头的连接,依次装入引流片5与电流采集环2,恢复单联碗头与瓷瓶的连接即可。 In use, to open a connection with a single Bowl Head porcelain ball head, was charged sequentially drainage collection sheet 5 and the current ring 2, the connection is restored to a single joint head and bowl of porcelain.

本实用新型安装在瓷瓶底下球头处,远离导线,避免了受输电导线本身产生的电磁干扰影响;同时瓷瓶球头处本身的结构对采集单元是一种磁场保护,将电磁场干扰减少到最小。 The present invention is mounted beneath porcelain ball, away from the wire, to avoid the transmission line affected by electromagnetic interference generated by itself; porcelain ball at the same time, the structure itself of the magnetic field on an acquisition unit, to reduce electromagnetic interference to a minimum.

Claims (3)

1.一种高压输电线路绝缘子表面泄漏电流的获取装置,其特征在于:所述的泄漏电流的获取装置包括电流采集环(2)和引流片(5),所述的电流采集环(2)设置在绝缘子高压端瓷瓶底下球头的单联碗头(6)处,所述的引流片(5)设置在瓷瓶(3)的内腔中。 A high-voltage transmission line insulator surface leakage current acquisition apparatus, wherein: said acquiring means comprises a leakage current of a current collecting ring (2) and the drainage sheet (5), the current collecting ring (2) high voltage porcelain insulator disposed underneath the ball head end of a single bowl head (6) of the drainage sheet (5) disposed in the interior of porcelain (3),.
2.根据权利要求1所述的高压输电线路绝缘子表面泄漏电流的获取装置,其特征在于:所述的电流采集环(2)由电双层屏蔽罗高夫斯基线圈组成。 The high voltage transmission line of the surface of the insulator 1, the leakage current acquisition device as claimed in claim, wherein: the current collecting ring (2) by an electric double-shielded Rogowski coils.
3.根据权利要求1或2所述的高压输电线路绝缘子表面泄漏电流的获取装置,其特征在于:所述的引流片(5)为一薄铜片,其大小与形状为与瓷瓶(3)的内腔相适应。 The high voltage transmission line 12 or the surface of the insulator leakage current acquisition device as claimed in claim, wherein: said drainage sheet (5) is a thin sheet of copper, its size and shape with the porcelain (3) lumen adapt.
CN 200420041476 2004-01-30 2004-01-30 Acquiring apparatus for surface current leakage of high-voltage transmitting line insulator CN2689413Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435812A (en) * 2011-09-22 2012-05-02 广东电网公司深圳供电局 Insulator leakage current collecting ring and insulator leakage current collecting device
CN102539979A (en) * 2012-02-07 2012-07-04 云南电力试验研究院(集团)有限公司电力研究院 Method for evaluating inner insulation performance of monolithic suspension insulator by testing direct-current leaked currents
CN103017829A (en) * 2012-12-20 2013-04-03 四川富谊智能电力技术有限公司 Online monitoring system and online monitoring method of high-voltage insulator filthy state

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435812A (en) * 2011-09-22 2012-05-02 广东电网公司深圳供电局 Insulator leakage current collecting ring and insulator leakage current collecting device
CN102435812B (en) * 2011-09-22 2014-09-03 广东电网公司深圳供电局 Insulator leakage current collecting ring and insulator leakage current collecting device
CN102539979A (en) * 2012-02-07 2012-07-04 云南电力试验研究院(集团)有限公司电力研究院 Method for evaluating inner insulation performance of monolithic suspension insulator by testing direct-current leaked currents
CN103017829A (en) * 2012-12-20 2013-04-03 四川富谊智能电力技术有限公司 Online monitoring system and online monitoring method of high-voltage insulator filthy state

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