CN210110441U - A shielding electrode of a basin insulator - Google Patents
A shielding electrode of a basin insulator Download PDFInfo
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- CN210110441U CN210110441U CN201920702433.XU CN201920702433U CN210110441U CN 210110441 U CN210110441 U CN 210110441U CN 201920702433 U CN201920702433 U CN 201920702433U CN 210110441 U CN210110441 U CN 210110441U
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Abstract
一种盆式绝缘子的屏蔽电极，属于电力系统安全运行设施，它包括铝合金外壳、盆式绝缘子，盆式绝缘子设置在铝合金外壳内，其特征是上屏蔽电极安装在盆式绝缘子凸面和中心导体的连接处，下屏蔽电极安装在盆式绝缘子凹面和中心导体的连接处，上屏蔽电极、下屏蔽电极、盆式绝缘子周围充满SF6气体并通过铝合金外壳包围。本实用新型改善了盆式绝缘子的电场分布，尤其是降低了中心导体、环氧树脂绝缘子和SF6气体三者交界处的局部电场强度，避免了因电场畸变和局部电场集中导致的盆式绝缘子闪络，提高设备运行的安全性。
A shielding electrode of a basin-type insulator belongs to the safe operation facility of a power system. It comprises an aluminum alloy casing and a basin-type insulator. The basin-type insulator is arranged in the aluminum alloy casing, and is characterized in that the upper shielding electrode is installed on the convex surface and the center of the basin-type insulator. At the connection of conductors, the lower shield electrode is installed at the connection between the concave surface of the pot insulator and the center conductor, and the upper shield electrode, the lower shield electrode, and the pot insulator are filled with SF 6 gas and surrounded by an aluminum alloy shell. The utility model improves the electric field distribution of the pot-type insulator, especially reduces the local electric field intensity at the junction of the center conductor, the epoxy resin insulator and the SF gas, and avoids the pot - type insulator caused by electric field distortion and local electric field concentration. Flashover, improve the safety of equipment operation.
Description
技术领域technical field
本实用新型属于电力系统安全运行设施，具体涉及一种盆式绝缘子的屏蔽电极。The utility model belongs to a safe operation facility of a power system, in particular to a shielding electrode of a basin-type insulator.
背景技术Background technique
气体绝缘变电站(gas insulated substation，GIS)与传统敞开式变电站相比，有着可靠性高、损耗小、占地少、噪音小等诸多优点，在世界各地有着广泛的运用。气体绝缘变电站是由断路器、母线、隔离开关、接地开关、电压互感器、电流互感器、避雷器和高压套管等组成的高压电器。盆式绝缘子是气体绝缘变电站的关键部件，起着支撑导体、隔离气室和电气绝缘的作用。绝缘子表面电场畸变和局部电场集中是引起盆式绝缘子闪络的主要原因。闪络通常发生在中心导体、环氧树脂绝缘子和SF6气体三者交界处。因此，合理的设计盆式绝缘子的结构具有重要意义。Compared with traditional open-type substations, gas insulated substations (GIS) have many advantages such as high reliability, low loss, small footprint and low noise, and are widely used all over the world. Gas-insulated substations are high-voltage electrical appliances composed of circuit breakers, bus bars, isolating switches, grounding switches, voltage transformers, current transformers, arresters and high-voltage bushings. Basin insulators are key components of gas-insulated substations, which play the role of supporting conductors, isolating gas chambers and electrical insulation. The electric field distortion and local electric field concentration on the surface of insulators are the main reasons for the flashover of basin insulators. Flashover usually occurs at the junction of the center conductor, epoxy insulator and SF 6 gas. Therefore, it is of great significance to reasonably design the structure of the basin insulator.
发明内容SUMMARY OF THE INVENTION
为了解决盆式绝缘子表面电场畸变和局部电场集中导致盆式绝缘子闪络的问题，本实用新型提供了一种安装在盆式绝缘子和中心导体附近的屏蔽电极，该屏蔽电极的存在可以改善盆式绝缘子的电场分布，避免局部电场强度过高的情况发生。In order to solve the problem of electric field distortion on the surface of the basin insulator and local electric field concentration leading to the flashover of the basin insulator, the utility model provides a shielding electrode installed near the basin insulator and the center conductor. The electric field distribution of the insulator avoids the occurrence of high local electric field intensity.
本实用新型解决其技术问题所采用的技术方案：The technical scheme adopted by the utility model to solve its technical problems:
一种盆式绝缘子的屏蔽电极，包括铝合金外壳、盆式绝缘子，盆式绝缘子设置在铝合金外壳内，其特征是上屏蔽电极安装在盆式绝缘子凸面和中心导体的连接处，下屏蔽电极安装在盆式绝缘子凹面和中心导体的连接处，中心导体穿过下屏蔽电极、盆式绝缘子和上屏蔽电极并下屏蔽电极、盆式绝缘子和上屏蔽电极与中心导体连接为一体，上屏蔽电极、下屏蔽电极、盆式绝缘子周围充满SF6气体并通过铝合金外壳包围。A shielding electrode for a basin-type insulator, comprising an aluminum alloy casing and a basin-type insulator. The basin-type insulator is arranged in the aluminum alloy casing. It is installed at the connection between the concave surface of the basin insulator and the central conductor. The central conductor passes through the lower shielding electrode, the basin insulator and the upper shielding electrode, and the lower shielding electrode, the basin insulator and the upper shielding electrode are connected with the central conductor as a whole, and the upper shielding electrode is integrated. , The lower shield electrode and the basin insulator are filled with SF 6 gas and surrounded by an aluminum alloy shell.
上屏蔽电极的高是80mm，直径是20mm，两端边缘倒角半径为10mm。The height of the upper shield electrode is 80mm, the diameter is 20mm, and the edge chamfering radius at both ends is 10mm.
下屏蔽电极的高是80mm，直径是20mm，两端边缘倒角半径为10mm。The height of the lower shield electrode is 80mm, the diameter is 20mm, and the edge chamfering radius of both ends is 10mm.
本实用新型屏蔽电极安装在中心导体和盆式绝缘子结合处。上屏蔽电极用来改善盆式绝缘子上表面的电场分布；下屏蔽电极用来改善盆式绝缘子下表面的电场分布；屏蔽电极的圆弧形倒角削弱局部电场集中，有效地改善电场分布，提高设备运行的安全性。The shielding electrode of the utility model is installed at the junction of the central conductor and the basin-type insulator. The upper shield electrode is used to improve the electric field distribution on the upper surface of the basin insulator; the lower shield electrode is used to improve the electric field distribution on the lower surface of the basin insulator; the arc-shaped chamfer of the shield electrode weakens the local electric field concentration, effectively improves the electric field distribution, and increases the The safety of equipment operation.
本实用新型改善了盆式绝缘子的电场分布，尤其是降低了中心导体、环氧树脂绝缘子和SF6气体三者交界处的局部电场强度，避免了因电场畸变和局部电场集中导致的盆式绝缘子闪络，提高设备运行的安全性。The utility model improves the electric field distribution of the pot-type insulator, especially reduces the local electric field intensity at the junction of the center conductor, the epoxy resin insulator and the SF gas, and avoids the pot - type insulator caused by electric field distortion and local electric field concentration. Flashover, improve the safety of equipment operation.
附图说明Description of drawings
图1是本实用新型的结构示意图。Figure 1 is a schematic structural diagram of the present invention.
图中，1、上屏蔽电极，2、下屏蔽电极，3、中心导体，4、盆式绝缘子，5、外壳。In the figure, 1. Upper shielding electrode, 2. Lower shielding electrode, 3. Center conductor, 4. Basin insulator, 5. Outer shell.
具体实施方式Detailed ways
图1所示，一种盆式绝缘子的屏蔽电极，包括铝合金外壳5、盆式绝缘子4，盆式绝缘子4设置在铝合金外壳5内，其特征是上屏蔽电极1安装在盆式绝缘子凸面和中心导体3的连接处，下屏蔽电极2安装在盆式绝缘子凹面和中心导体3的连接处，中心导体3穿过下屏蔽电极2、盆式绝缘子4和上屏蔽电极1并下屏蔽电极2、盆式绝缘子4和上屏蔽电极1与中心导体3连接为一体，上屏蔽电极1、下屏蔽电极2、盆式绝缘子4周围充满SF6气体并通过铝合金外壳5包围。As shown in FIG. 1, a shielding electrode of a basin-type insulator includes an
所述上屏蔽电极的高是80mm，直径是20mm，两端边缘倒角半径为10mm。The height of the upper shield electrode is 80 mm, the diameter is 20 mm, and the chamfering radius of the edges at both ends is 10 mm.
所述下屏蔽电极的高是80mm，直径是20mm，两端边缘倒角半径为10mm。The height of the lower shield electrode is 80mm, the diameter is 20mm, and the edge chamfering radius of both ends is 10mm.
本实用新型先使用浇注的方法将中心导体和盆式绝缘子浇注在一起，然后将上屏蔽电极和中心导体与盆式绝缘子浇注在一起，并将下屏蔽电极和中心导体与盆式绝缘子浇注在一起。The utility model first uses the casting method to cast the central conductor and the basin insulator together, then casts the upper shielding electrode and the central conductor and the basin insulator together, and casts the lower shielding electrode and the central conductor together with the basin insulator. .
上屏蔽电极、下屏蔽电极材料均选用洋白铜。The upper shielding electrode and the lower shielding electrode are made of white copper.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920702433.XU CN210110441U (en) | 2019-05-16 | 2019-05-16 | A shielding electrode of a basin insulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271047A (en) * | 2020-11-26 | 2021-01-26 | 麦克奥迪(厦门)智能电气有限公司 | Preparation and application of a basin-type insulator with modified coating |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271047A (en) * | 2020-11-26 | 2021-01-26 | 麦克奥迪(厦门)智能电气有限公司 | Preparation and application of a basin-type insulator with modified coating |
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