CN209895846U - Gradient sectional type composite insulator structure and high-voltage insulating subsystem - Google Patents
Gradient sectional type composite insulator structure and high-voltage insulating subsystem Download PDFInfo
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- CN209895846U CN209895846U CN201920769411.5U CN201920769411U CN209895846U CN 209895846 U CN209895846 U CN 209895846U CN 201920769411 U CN201920769411 U CN 201920769411U CN 209895846 U CN209895846 U CN 209895846U
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Abstract
Description
技术领域technical field
本实用新型属于输电线路绝缘结构技术领域,尤其涉及一种梯度分段式复合绝缘子结构、高压绝缘子系统。The utility model belongs to the technical field of transmission line insulation structures, in particular to a gradient segmented composite insulator structure and a high-voltage insulator subsystem.
背景技术Background technique
目前,业内最接近的现有技术:Currently, the closest existing technology in the industry:
输电线路复合绝缘子近年开始出现分段式复合绝缘子结构,即两节复合绝缘子组装在一起形成一串复合绝缘子。这种结构中上、下两段复合绝缘子的结构和性能完全一致。在绝缘子挂网运行的过程中,由于杂散电容的影响,330kV 分段式复合绝缘子的电位分布不均匀。导线侧的一节复合绝缘子上承担了较高的电压,而杆塔侧复合绝缘子承担的电压较低。导致导线侧的复合绝缘子老化速度更快,不利于输电线路的安全稳定运行。In recent years, composite insulators for transmission lines have appeared in segmented composite insulator structures, that is, two sections of composite insulators are assembled together to form a series of composite insulators. The structure and performance of the upper and lower composite insulators in this structure are exactly the same. During the operation of the insulator hanging on the grid, due to the influence of stray capacitance, the potential distribution of the 330kV segmented composite insulator is not uniform. A section of the composite insulator on the wire side bears a higher voltage, while the composite insulator on the tower side bears a lower voltage. As a result, the composite insulator on the wire side ages faster, which is not conducive to the safe and stable operation of the transmission line.
综上所述,现有技术存在的问题是:To sum up, the problems existing in the prior art are:
在绝缘子挂网运行的过程中,由于杂散电容的影响,330kV分段式复合绝缘子的电位分布不均匀,导致导线侧的复合绝缘子老化速度更快,不利于输电线路的安全稳定运行。During the operation of the insulator on the grid, due to the influence of stray capacitance, the potential distribution of the 330kV segmented composite insulator is not uniform, resulting in a faster aging speed of the composite insulator on the wire side, which is not conducive to the safe and stable operation of the transmission line.
解决上述技术问题的难度:The difficulty of solving the above technical problems:
1、需要准确建立330kV分段式绝缘子模型;1. It is necessary to accurately establish the 330kV segmented insulator model;
2、需要精确得出330kV分段式绝缘子电位分布;2. It is necessary to accurately obtain the potential distribution of 330kV segmented insulators;
3、需要将导线侧大量不同介电常数绝缘子分别进行模拟计算,得出电位分布和铁塔侧绝缘子接近时的相对介电常数。3. It is necessary to simulate and calculate a large number of insulators with different dielectric constants on the wire side respectively to obtain the potential distribution and the relative dielectric constant when the insulators on the tower side are close.
解决上述技术问题的意义:The significance of solving the above technical problems:
可使330kV分段式复合绝缘子电位分布均匀,均衡导线侧和铁塔侧复合绝缘子老化速度,减少一段绝缘子已损坏而另一段完好无损现象,从而有效提高两段式绝缘子的使用寿命。It can make the potential distribution of 330kV segmented composite insulators uniform, balance the aging speed of the composite insulators on the wire side and the tower side, reduce the phenomenon that one insulator is damaged and the other is intact, thereby effectively improving the service life of the two-section insulator.
实用新型内容Utility model content
针对现有技术存在的问题,本实用新型提供了一种梯度分段式复合绝缘子结构。Aiming at the problems existing in the prior art, the utility model provides a gradient segmented composite insulator structure.
本实用新型是这样实现的,该梯度分段式复合绝缘子结构设置有:The utility model is realized in this way, the gradient segmented composite insulator structure is provided with:
复合绝缘子;composite insulator;
复合绝缘子共设置有两节,两节之间采用金属连接件连接。The composite insulator is provided with two sections in total, and the two sections are connected by metal connectors.
进一步,所述复合绝缘子包括杆塔侧复合绝缘子和导线侧复合绝缘子,杆塔侧复合绝缘子和导线侧复合绝缘子分别连接在金属连接件的两端。Further, the composite insulator includes a tower-side composite insulator and a wire-side composite insulator, and the tower-side composite insulator and the wire-side composite insulator are respectively connected to two ends of the metal connector.
进一步,所述杆塔侧复合绝缘子和导线侧复合绝缘子外侧均涂覆有复合绝缘材料层。Further, the outer sides of the tower-side composite insulator and the wire-side composite insulator are coated with a composite insulating material layer.
进一步,所述杆塔侧复合绝缘子的相对介电常数在3~5之间,所述导线侧复合绝缘子的相对介电常数为100~120之间。Further, the relative permittivity of the tower-side composite insulator is between 3 and 5, and the relative permittivity of the wire-side composite insulator is between 100 and 120.
本实用新型的另一目的在于提供一种安装有所述梯度分段式复合绝缘子结构的高压绝缘子系统。Another object of the present invention is to provide a high-voltage insulator subsystem equipped with the gradient segmented composite insulator structure.
综上所述,本实用新型的优点及积极效果为:To sum up, the advantages and positive effects of the present utility model are:
通过采用结构相同,相对介电常数不同的两节复合绝缘子组合形成分段式绝缘子,通过电位分布随相对介电常数变化的规律,达到均匀电场的目的,可以有效提升330kV分段式复合绝缘子的均匀度,使两节复合绝缘子上承担电压接近,从而老化速率接近,提高复合绝缘子的寿命,通过相对介电常数的梯度调节作用,使得导线侧绝缘子上承担电压变低,杆塔侧承担电压变高。By combining two sections of composite insulators with the same structure and different relative permittivity to form a segmented insulator, the purpose of a uniform electric field is achieved through the law of the potential distribution changing with the relative permittivity, which can effectively improve the 330kV segmented composite insulator. Uniformity, so that the voltages on the two composite insulators are similar, so the aging rate is similar, and the life of the composite insulators is improved. Through the gradient adjustment of the relative permittivity, the voltage on the insulator on the wire side becomes lower, and the voltage on the tower side becomes higher. .
附图说明Description of drawings
图1是本实用新型实施例提供的梯度分段式复合绝缘子结构示意图;1 is a schematic structural diagram of a gradient segmented composite insulator provided by an embodiment of the present invention;
图中:1、杆塔侧复合绝缘子;2、导线侧复合绝缘子;3、金属连接件。In the figure: 1. Composite insulator on tower side; 2. Composite insulator on wire side; 3. Metal connector.
具体实施方式Detailed ways
为能进一步了解本实用新型的发明内容、特点及功效,兹例举以下实施例,并配合附图详细说明如下。In order to further understand the inventive content, features and effects of the present utility model, the following embodiments are exemplified and described in detail with the accompanying drawings as follows.
如图1所示,本实用新型实施例提供的梯度分段式复合绝缘子结构包括:杆塔侧复合绝缘子1、导线侧复合绝缘子2、金属连接件3。As shown in FIG. 1 , the gradient segmented composite insulator structure provided by the embodiment of the present invention includes: a tower-
杆塔侧复合绝缘子1和导线侧复合绝缘子2之间采用金属连接件3连接,杆塔侧复合绝缘子1和导线侧复合绝缘子2外侧均涂覆有复合绝缘材料层;杆塔侧复合绝缘子1和导线侧复合绝缘子2的介电常数不同。The tower-
作为优选,杆塔侧复合绝缘子1的相对介电常数在3~5之间,导线侧复合绝缘子2的相对介电常数为100~120之间。Preferably, the relative permittivity of the tower-
本实用新型的另一目的在于提供一种安装有所述梯度分段式复合绝缘子结构的高压绝缘子系统。Another object of the present invention is to provide a high-voltage insulator subsystem equipped with the gradient segmented composite insulator structure.
本实用新型的工作原理是:The working principle of the utility model is:
本实用新型由两节复合绝缘子构成,两节之间采用金属连接件3连接。两节绝缘子外部绝缘主要为复合绝缘材料,其相对介电常数在3~5之间。采用结构相同,相对介电常数不同的两节复合绝缘子组合形成分段式绝缘子。导线侧复合绝缘子2的使用改性后的复合绝缘材料,保证其相对介电常数为100~120 之间。杆塔侧复合绝缘子1的复合绝缘材料不变,其相对介电常数在3~5之间。通过电位分布随相对介电常数变化的规律,达到均匀电场的目的。The utility model is composed of two sections of composite insulators, and the two sections are connected by a metal connecting piece 3 . The external insulation of the two insulators is mainly composite insulating material, and its relative dielectric constant is between 3 and 5. A segmented insulator is formed by combining two composite insulators with the same structure and different relative permittivity. The wire-
以上所述仅是对本实用新型的较佳实施例而已,并非对本实用新型作任何形式上的限制,凡是依据本实用新型的技术实质对以上实施例所做的任何简单修改,等同变化与修饰,均属于本实用新型技术方案的范围内。The above is only the preferred embodiment of the present utility model, and is not intended to limit the present utility model in any form. Any simple modifications made to the above embodiments according to the technical essence of the present utility model are equivalent to changes and modifications. All belong to the scope of the technical solution of the present invention.
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