CN105759188A - UHF sensor for GIS partial discharge detection - Google Patents
UHF sensor for GIS partial discharge detection Download PDFInfo
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- 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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- G01R31/1254—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 of components, parts or materials of gas-insulated power appliances or vacuum gaps
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Abstract
本发明公开了一种GIS局部放电检测的UHF传感器，包括：内置接收圆盘和环氧介质层，环氧介质层设置于内置接收圆盘底部，环氧介质层顶面与内置接收圆盘底面紧贴，环氧介质层中部设有传输通孔；接地法兰，接地法兰中部设置连接通孔；传输杆，传输杆底部设置于传输孔内，传输杆中部依次穿过传输通孔和连接通孔，传输杆底部固接设有用于信号传输的电缆。本发明所提供的GIS局部放电检测的UHF传感器，可有效的监测到GIS内的局部放电，并且环氧介质层和接地法兰，可有效的起到隔离效果，避免外界对内置接收圆盘的检测干扰，使检测结果更加精准，最后通过传输杆将信号传送出去。与现有技术相比，本技术方案具有较宽的检测频段、较高的灵敏度和抗干扰能力。
The invention discloses a UHF sensor for GIS partial discharge detection, comprising: a built-in receiving disk and an epoxy medium layer, the epoxy medium layer is arranged at the bottom of the built-in receiving disk, the top surface of the epoxy medium layer and the bottom surface of the built-in receiving disk Closely attached, the middle part of the epoxy dielectric layer is provided with a transmission through hole; the grounding flange is provided with a connecting through hole in the middle part of the grounding flange; the transmission rod, the bottom of the transmission rod is set in the transmission hole, and the middle part of the transmission rod passes through the transmission through hole and connecting Through holes, cables for signal transmission are fixedly connected to the bottom of the transmission rod. The UHF sensor for GIS partial discharge detection provided by the present invention can effectively monitor the partial discharge in the GIS, and the epoxy dielectric layer and the grounding flange can effectively isolate the built-in receiving disc from the outside. Detect interference, make the detection result more accurate, and finally transmit the signal through the transmission rod. Compared with the prior art, the technical solution has wider detection frequency band, higher sensitivity and anti-interference ability.
Description
技术领域technical field
本发明涉及电力设备绝缘状态诊断技术领域，特别是涉及一种GIS局部放电检测的UHF传感器。The invention relates to the technical field of electric equipment insulation state diagnosis, in particular to a UHF sensor for GIS partial discharge detection.
背景技术Background technique
全封闭组合电器(GIS)内局部放电具有极快的击穿特性，其脉冲持续时间极短(约为几纳秒)，波头的上升时间仅为1ns左右，这种具有快速上升时沿的局部放电脉冲会激发出特高频电磁波，因此可以通过在GIS设备上安装特高频传感器来检测GIS产生的局部放电。Partial discharge in fully enclosed combined electrical equipment (GIS) has extremely fast breakdown characteristics, and its pulse duration is extremely short (about a few nanoseconds), and the rise time of the wave head is only about 1ns. Partial discharge pulses will excite UHF electromagnetic waves, so the partial discharge generated by GIS can be detected by installing UHF sensors on GIS equipment.
近年来多数GIS制造厂家均采用了带金属法兰的盆式绝缘子，使电磁波难以传播到GIS外部，因而在GIS外部用外置式传感器很难检测到信号。In recent years, most GIS manufacturers have adopted pot insulators with metal flanges, which makes it difficult for electromagnetic waves to propagate outside the GIS, so it is difficult to detect signals with external sensors outside the GIS.
因此，如何能有效的接收GIS局部放电信号，是本领域技术人员亟需解决的技术问题。Therefore, how to effectively receive GIS partial discharge signals is a technical problem urgently needed to be solved by those skilled in the art.
发明内容Contents of the invention
本发明的目的是提供一种GIS局部放电检测的UHF传感器，能够有效的接收GIS局部放电信号.且能够响应特高频电磁波信号，并具有足够高的灵敏度。The purpose of the present invention is to provide a UHF sensor for GIS partial discharge detection, which can effectively receive GIS partial discharge signals, and can respond to UHF electromagnetic wave signals, and has sufficiently high sensitivity.
为解决上述技术问题，本发明实施例提供了一种GIS局部放电检测的UHF传感器，包括：In order to solve the above technical problems, an embodiment of the present invention provides a UHF sensor for GIS partial discharge detection, including:
内置接收圆盘，所述内置接收圆盘用于检测GIS局部放电信息，所述内置接收圆盘底部中部设有传输孔；Built-in receiving disc, the built-in receiving disc is used to detect GIS partial discharge information, and the middle part of the bottom of the built-in receiving disc is provided with a transmission hole;
环氧介质层，所述环氧介质层设置于所述内置接收圆盘底部，所述环氧介质层顶面与内置接收圆盘底面紧贴，所述环氧介质层中部设有传输通孔；An epoxy medium layer, the epoxy medium layer is arranged at the bottom of the built-in receiving disk, the top surface of the epoxy medium layer is in close contact with the bottom surface of the built-in receiving disk, and a transmission through hole is provided in the middle of the epoxy medium layer ;
接地法兰，所述接地法兰固接设置于所述环氧介质层底部，所述接地法兰中部设置连接通孔；A grounding flange, the grounding flange is fixedly arranged at the bottom of the epoxy medium layer, and a connection through hole is provided in the middle of the grounding flange;
传输杆，所述传输杆底部设置于所述传输孔内，所述传输杆中部依次穿过所述传输通孔和连接通孔，所述传输杆底部固接设有用于信号传输的电缆。The transmission rod, the bottom of the transmission rod is arranged in the transmission hole, the middle part of the transmission rod passes through the transmission through hole and the connection through hole in sequence, and the bottom of the transmission rod is fixedly connected with a cable for signal transmission.
优选地，所述传输杆底部通过N型接头与所述电缆连接。Preferably, the bottom of the transmission rod is connected to the cable through an N-type joint.
优选地，所述N型接头的顶端固接设置于所述连接通孔的中部。Preferably, the top end of the N-type joint is fixedly arranged in the middle of the connecting through hole.
优选地，所述内置接收圆盘、所述环氧介质层和所述接地法兰之间通过螺栓固接为一体。Preferably, the built-in receiving disc, the epoxy medium layer and the ground flange are integrally connected by bolts.
优选地，所述内置接收圆盘的直径为300mm，厚度为20mm。Preferably, the inner receiving disc has a diameter of 300mm and a thickness of 20mm.
优选地，所述环氧介质层的直径为300mm，厚度为40mm。Preferably, the epoxy dielectric layer has a diameter of 300mm and a thickness of 40mm.
优选地，所述接地法兰的直径为600mm，厚度为60mm。Preferably, the grounding flange has a diameter of 600mm and a thickness of 60mm.
本发明所提供的GIS局部放电检测的UHF传感器，包括设置于GIS内的内置接收圆盘、环氧介质层、接地法兰和用于信号传输的传输杆。因将内置接收圆盘设置于GIS内，因此内置接收圆盘可有效的监测到GIS内的局部放电信息，并且又因为内置接收圆盘的形状为圆盘形，因此可以在足够宽的频段内具有良好的频率响应特性。环氧介质层和接地法兰，可有效的起到隔离效果，避免外界对内置接收圆盘的检测干扰，提高检测结果的准确性，最后通过传输杆将所检测到的信号传送出去。与现有技术相比，本技术方案具有较宽的检测频段、较高的灵敏度和抗干扰能力。The UHF sensor for GIS partial discharge detection provided by the present invention includes a built-in receiving disk, an epoxy dielectric layer, a grounding flange and a transmission rod for signal transmission arranged in the GIS. Because the built-in receiving disc is set in the GIS, the built-in receiving disc can effectively monitor the partial discharge information in the GIS, and because the shape of the built-in receiving disc is disc-shaped, it can be used in a wide enough frequency band Has good frequency response characteristics. The epoxy dielectric layer and the grounding flange can effectively isolate the effect, avoid external interference on the detection of the built-in receiving disc, improve the accuracy of the detection result, and finally transmit the detected signal through the transmission rod. Compared with the prior art, the technical solution has wider detection frequency band, higher sensitivity and anti-interference ability.
附图说明Description of drawings
为了更清楚地说明本发明实施例，下面将对实施例中所需要使用的附图做简单的介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.
图1为本发明所提供的GIS局部放电检测的UHF传感器结构示意图。Fig. 1 is a schematic structural diagram of a UHF sensor for GIS partial discharge detection provided by the present invention.
附图中，1为内置接收圆盘，2为环氧介质层，3为接地法兰，4为传输杆，5为N型接头。In the accompanying drawings, 1 is a built-in receiving disc, 2 is an epoxy medium layer, 3 is a grounding flange, 4 is a transmission rod, and 5 is an N-type joint.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下，所获得的所有其他实施例，都属于本发明保护范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
为了使本技术领域的人员更好地理解本发明方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明公开了一种GIS局部放电检测的UHF传感器，包括：The invention discloses a UHF sensor for GIS partial discharge detection, comprising:
内置接收圆盘1，所述内置接收圆盘1用于检测GIS局部放电信息，所述内置接收圆盘1底部中部设有传输孔；Built-in receiving disc 1, the built-in receiving disc 1 is used to detect GIS partial discharge information, and the middle part of the bottom of the built-in receiving disc 1 is provided with a transmission hole;
环氧介质层2，所述环氧介质层2设置于所述内置接收圆盘1底部，所述环氧介质层2顶面与内置接收圆盘1底面紧贴，所述环氧介质层2中部设有传输通孔；Epoxy medium layer 2, the epoxy medium layer 2 is arranged on the bottom of the built-in receiving disc 1, the top surface of the epoxy medium layer 2 is in close contact with the bottom surface of the built-in receiving disc 1, and the epoxy medium layer 2 There is a transmission through hole in the middle;
接地法兰3，所述接地法兰3固接设置于所述环氧介质层2底部，所述接地法兰3中部设置连接通孔；A grounding flange 3, the grounding flange 3 is affixed to the bottom of the epoxy medium layer 2, and the middle part of the grounding flange 3 is provided with a connection through hole;
传输杆4，所述传输杆4底部设置于所述传输孔内，所述传输杆4中部依次穿过所述传输通孔和连接通孔，所述传输杆4底部固接设有用于信号传输的电缆。Transmission rod 4, the bottom of the transmission rod 4 is set in the transmission hole, the middle part of the transmission rod 4 passes through the transmission through hole and the connection through hole in turn, and the bottom of the transmission rod 4 is fixed with a signal transmission cable.
其中，本领域技术人员可以理解的是，通过将内置接收圆盘1用于检测GIS局部放电，并将GIS放电的信号传送出去。Wherein, those skilled in the art can understand that the built-in receiving disk 1 is used to detect the partial discharge of the GIS and transmit the signal of the GIS discharge.
在工作过程中，因将内置接收圆盘1设置于GIS内，因此内置接收圆盘1可有效的监测到GIS内的局部放电信息，并且又因为内置接收圆盘1的形状为圆盘形，因此其可以再足够宽的频段内具有良好的频率响应特性。环氧介质层2和接地法兰3，可有效的起到隔离效果，避免外界对内置接收圆盘1的检测干扰，提高检测结果的准确性，最后通过传输杆4将所检测到的信号传送出去。与现有技术相比，本技术方案具有较宽的检测频段、较高的灵敏度和抗干扰能力。In the working process, because the built-in receiving disc 1 is set in the GIS, the built-in receiving disc 1 can effectively monitor the partial discharge information in the GIS, and because the shape of the built-in receiving disc 1 is a disc, Therefore, it can have good frequency response characteristics in a sufficiently wide frequency band. The epoxy dielectric layer 2 and the grounding flange 3 can effectively isolate the effect, avoid external interference on the detection of the built-in receiving disc 1, improve the accuracy of the detection result, and finally transmit the detected signal through the transmission rod 4 go out. Compared with the prior art, the technical solution has wider detection frequency band, higher sensitivity and anti-interference ability.
在本发明一具体实施例中，所述传输杆4底部通过N型接头5与所述电缆连接。本领域技术人员可以理解的是，N型接头5是一种螺纹连接的连接器，它具有可靠性高，抗振性强、机械和电气性能优良等特点。并且N型接头5适用于同轴电缆进行信号传输，具有很好的抗干扰能力，进一步提高所检测的到信号在传输过程中的抗干扰性。In a specific embodiment of the present invention, the bottom of the transmission rod 4 is connected to the cable through an N-type joint 5 . Those skilled in the art can understand that the N-type joint 5 is a threaded connector, which has the characteristics of high reliability, strong vibration resistance, and excellent mechanical and electrical performance. Moreover, the N-type connector 5 is suitable for coaxial cable for signal transmission, has good anti-interference ability, and further improves the anti-interference ability of the detected signal during transmission.
为了进一步优化上述实施例，使所检测到的信号在传递过程中不受到外界的影响，所述N型接头5的顶端固接设置于所述连接通孔的中部。In order to further optimize the above embodiment so that the detected signal is not affected by the outside during transmission, the top end of the N-type connector 5 is fixedly arranged in the middle of the connection through hole.
在本发明一具体实施例中，所述内置接收圆盘1、所述环氧介质层2和所述接地法兰3之间通过螺栓固接为一体。通过螺栓将上述三者固定为一体后，可有效的保证接收圆盘在工作过程中，不会出现位移的情况发生，并且保证信号的稳定性，并且通过接地法兰3和环氧介质层2可有效的提高其抗干扰能力，使所检测到的信号更加的稳定和精准。In a specific embodiment of the present invention, the built-in receiving disc 1 , the epoxy medium layer 2 and the ground flange 3 are fixed as a whole by bolts. After the above three are fixed together by bolts, it can effectively ensure that the receiving disc will not be displaced during the working process, and ensure the stability of the signal, and through the ground flange 3 and the epoxy dielectric layer 2 It can effectively improve its anti-interference ability and make the detected signal more stable and accurate.
为了优化上述实施例，所述内置接收圆盘1的直径为300mm，厚度为20mm。本领域技术人员可以理解的是，内置接收圆盘1因为要设置于GIS内，因此如果内置接收圆盘1体积如果过大，则影响GIS内空间，并且其灵敏度将会降低，因此将内置接收圆盘1的直径设置为300mm，这样可以有效的扩大检测频段的的范围。In order to optimize the above embodiment, the diameter of the built-in receiving disc 1 is 300 mm, and the thickness is 20 mm. It will be understood by those skilled in the art that the built-in receiving disc 1 will be installed in the GIS, if the volume of the built-in receiving disc 1 is too large, it will affect the space in the GIS, and its sensitivity will be reduced, so the built-in receiving disc will The diameter of the disk 1 is set to 300 mm, which can effectively expand the range of the detection frequency band.
又进一步，所述环氧介质层2的直径为300mm，厚度为40mm。本领域技术人员可以理解的是，环氧介质层2可有效的隔离外界为内置接收圆盘1的影响，确保检测结果的准确性，并且又因为出于对产品大小的考虑，优选的将环氧介质层2的直径为300mm，厚度为40mm。Still further, the epoxy dielectric layer 2 has a diameter of 300 mm and a thickness of 40 mm. Those skilled in the art can understand that the epoxy dielectric layer 2 can effectively isolate the influence of the outside world as the built-in receiving disc 1, ensuring the accuracy of the detection results, and because of the consideration of the size of the product, it is preferable to use the ring The oxygen dielectric layer 2 has a diameter of 300mm and a thickness of 40mm.
再进一步，所述接地法兰3的直径为600mm，厚度为60mm。接地方法的直接为600mm，并且中心与内置接收圆盘1的中心相对，因此可有效的阻挡外界的对内置接收圆盘1的影响，起到防护的作用。Still further, the diameter of the grounding flange 3 is 600mm, and the thickness is 60mm. The direct distance of the grounding method is 600mm, and the center is opposite to the center of the built-in receiving disc 1, so it can effectively block the influence of the outside world on the built-in receiving disc 1 and play a protective role.
本发明所提供的GIS局部放电检测的UHF传感器，包括设置于GIS内的内置接收圆盘1、环氧介质层2、接地法兰3和用于信号传输的传输杆4。因将内置接收圆盘1设置于GIS内，因此内置接收圆盘1可有效的监测到GIS内的局部放电信息，并且又因为内置接收圆盘1的形状为圆盘形，因此可以在足够宽的频段内具有良好的频率响应特性。环氧介质层2和接地法兰3，可有效的起到隔离效果，避免外界对内置接收圆盘1的检测干扰，提高检测结果的准确性，最后通过传输杆4将所检测到的信号传送出去。与现有技术相比，本技术方案具有较宽的检测频段、较高的灵敏度和抗干扰能力。The UHF sensor for GIS partial discharge detection provided by the present invention includes a built-in receiving disc 1, an epoxy dielectric layer 2, a grounding flange 3 and a transmission rod 4 for signal transmission arranged in the GIS. Because the built-in receiving disc 1 is set in the GIS, the built-in receiving disc 1 can effectively monitor the partial discharge information in the GIS, and because the shape of the built-in receiving disc 1 is disc-shaped, it can It has good frequency response characteristics in the frequency band. The epoxy dielectric layer 2 and the grounding flange 3 can effectively isolate the effect, avoid external interference on the detection of the built-in receiving disc 1, improve the accuracy of the detection result, and finally transmit the detected signal through the transmission rod 4 go out. Compared with the prior art, the technical solution has wider detection frequency band, higher sensitivity and anti-interference ability.
以上对本发明所提供的GIS局部放电检测的UHF传感器进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。The UHF sensor for GIS partial discharge detection provided by the present invention has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims (7)
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| CN201610248630.XA CN105759188A (en) | 2016-04-20 | 2016-04-20 | UHF sensor for GIS partial discharge detection |
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