CN103579786B - A kind of module reducing grounded screen electric resistance - Google Patents
A kind of module reducing grounded screen electric resistance Download PDFInfo
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- CN103579786B CN103579786B CN201310487910.2A CN201310487910A CN103579786B CN 103579786 B CN103579786 B CN 103579786B CN 201310487910 A CN201310487910 A CN 201310487910A CN 103579786 B CN103579786 B CN 103579786B
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Abstract
本发明公开了一种降低接地网电阻的模块，包括降阻套管、第一装配线和第二装配线，降阻套管内设有防腐降阻模块，防腐降阻模块与降阻套管之间由内向外依次设有降阻填包料及土壤，第一装配线的一端与防腐降阻模块连接，另一端依次穿过降阻填包料、土壤和降阻套管后与接地网连接，第二装配线的一端与降阻套管的外壁连接，另一端与接地网连接。本发明降低接地网电阻的模块，施工简单，不需要深开挖，安装及更换简便，不破坏已有建筑和周围环境，操作方便快捷；适用范围广，降低电阻明显，一个输电线杆塔安装一个降低接地网电阻的模块就能保证输电线的泄流作用达到设计要求，使接地网的电阻降低原来的5倍以上。
The invention discloses a module for reducing the resistance of a grounding network, which includes a resistance reducing bushing, a first assembly line and a second assembly line, an anti-corrosion and resistance-reducing module is arranged in the resistance-reducing bushing, and the anti-corrosion resistance-reducing module and the resistance-reducing bushing The resistance-reducing packing material and soil are arranged in sequence from the inside to the outside. One end of the first assembly line is connected to the anti-corrosion resistance-reducing module, and the other end passes through the resistance-reducing packing material, soil and resistance-reducing casing in turn and is connected to the grounding grid. The second assembly line One end is connected to the outer wall of the resistance reducing bushing, and the other end is connected to the ground grid. The module for reducing the resistance of the grounding grid in the present invention has simple construction, no need for deep excavation, easy installation and replacement, no damage to existing buildings and surrounding environments, convenient and quick operation; wide application range, obvious resistance reduction, and one power transmission line tower can be installed with one A module that reduces the resistance of the grounding grid can ensure that the leakage effect of the transmission line meets the design requirements, reducing the resistance of the grounding grid by more than 5 times.
Description
技术领域technical field
本发明属于输电线接地网技术领域，具体涉及一种降低接地网电阻的模块。The invention belongs to the technical field of transmission line grounding grids, and in particular relates to a module for reducing the resistance of the grounding grid.
背景技术Background technique
接地是将电气设备的某些部位、电力系统的某点与大地相连，提供故障电流及雷电流的泄流通道，稳定电位，提供零电位参考点及降低绝缘水平，以确保电力系统、电气设备的安全运行，同时确保电力系统运行人员及其他人员的人身安全。接地功能是通过接地材料或接地系统来实现的。Grounding is to connect some parts of electrical equipment and a certain point of the power system to the earth, provide a leakage channel for fault current and lightning current, stabilize the potential, provide a zero potential reference point and reduce the insulation level to ensure that the power system and electrical equipment The safe operation of the system, while ensuring the personal safety of power system operators and other personnel. The grounding function is realized through grounding material or grounding system.
多年来，由于沙漠地区、石山、干旱地区等地区的土壤电阻率较高，使得接地网的泄流作用减小，以至于我国由接地问题引起的电力系统事故时有发生，每次事故造成的直接经济损失大约在数十万元到几百万元之间，由电力系统事故造成的停电所带来的间接经济损失更大。特别是在输变电杆塔的接地工程中，需要长距离跨越山地、沙漠等土壤电阻率较高区域，接地工作量大，数量多，工程安装时难以满足接地网接地电阻的设计标准。为了使土壤的接地电阻达到设计要求，不得不增大接地网面积或增加垂直接地体。增大接地网面积，这无疑造成材料浪费，所需成本较高；增加垂直接地体，对于小型接地网可适用，但不适宜用于大型接地网；有些变电站也采用人工改善土壤电阻率的方法,但工程量大，增加施工难度，建设成本较高。Over the years, due to the high soil resistivity in desert areas, rocky mountains, and arid areas, the leakage effect of the grounding grid has been reduced, so that power system accidents caused by grounding problems in my country have occurred from time to time, and each accident caused The direct economic loss is between hundreds of thousands of yuan and several million yuan, and the indirect economic loss caused by power outages caused by power system accidents is even greater. Especially in the grounding project of power transmission and transformation towers, it is necessary to cross the mountains, deserts and other areas with high soil resistivity for a long distance. In order to make the grounding resistance of the soil meet the design requirements, it is necessary to increase the area of the grounding grid or increase the vertical grounding body. Increasing the area of the grounding grid will undoubtedly result in waste of materials and high cost; increasing the vertical grounding body is suitable for small grounding grids, but not suitable for large grounding grids; some substations also use the method of artificially improving soil resistivity , but the large amount of work increases the difficulty of construction and the high construction cost.
发明内容Contents of the invention
本发明的目的是提供一种降低接地网电阻的模块，解决了沙漠、石山、干旱地区的土壤电阻率较高，使得接地网的泄流作用减小的问题。The purpose of the present invention is to provide a module for reducing the resistance of the grounding grid, which solves the problem that the soil resistivity in deserts, rocky mountains, and arid regions is relatively high, so that the leakage effect of the grounding grid is reduced.
本发明所采用的技术方案是，一种降低接地网电阻的模块，包括降阻套管、第一装配线和第二装配线，降阻套管内设有防腐降阻模块，防腐降阻模块与降阻套管之间由内向外依次设有降阻填包料及土壤，第一装配线的一端与防腐降阻模块连接，另一端依次穿过降阻填包料、土壤和降阻套管后与接地网连接，第二装配线的一端与降阻套管的外壁连接，另一端与接地网连接。The technical solution adopted in the present invention is, a module for reducing the resistance of the grounding network, including a resistance reducing sleeve, a first assembly line and a second assembly line, the resistance reducing sleeve is provided with an anti-corrosion resistance reduction module, the anti-corrosion resistance reduction module and the resistance reduction The casings are provided with resistance-reducing packing material and soil in sequence from the inside to the outside. One end of the first assembly line is connected to the anti-corrosion resistance-reducing module, and the other end passes through the resistance-reducing packing material, soil and resistance-reducing casing in sequence, and then connects with the grounding grid. One end of the second assembly line is connected to the outer wall of the resistance reducing sleeve, and the other end is connected to the ground grid.
本发明的特点还在于，The present invention is also characterized in that,
降阻套管上均匀设有若干通孔，通孔的总面积为降阻套管外表面面积的1/4-2/3。A number of through holes are uniformly arranged on the resistance reducing sleeve, and the total area of the through holes is 1/4-2/3 of the outer surface area of the resistance reducing sleeve.
降阻套管的顶部设有盖子，降阻套管的底部设有底座。The top of the resistance reducing sleeve is provided with a cover, and the bottom of the resistance reducing sleeve is provided with a base.
土壤与降阻填包料之间设有布袋，防腐降阻模块和降阻填包料均设置于布袋内。A cloth bag is arranged between the soil and the resistance-reducing packing material, and the anti-corrosion resistance-reducing module and the resistance-reducing packing material are both arranged in the cloth bag.
防腐降阻模块包括骨架和浇注在骨架外围的合金材料，第一装配线通过铜螺栓与骨架连接。The anti-corrosion and resistance-reducing module includes a skeleton and an alloy material poured on the periphery of the skeleton, and the first assembly line is connected to the skeleton through copper bolts.
合金材料为镁合金、锌合金或铝合金。The alloy material is magnesium alloy, zinc alloy or aluminum alloy.
降阻填包料为由石膏粉、膨润土及复合盐按重量比为1：1：1组成的混合物，复合盐中的盐与土壤中所含的盐相同。The drag-reducing packing material is a mixture of gypsum powder, bentonite and compound salt in a weight ratio of 1:1:1, and the salt in the compound salt is the same as that contained in the soil.
本发明的有益效果是，本发明降低接地网电阻的模块，施工简单，不需要深开挖，降阻套管为水泥制品，内部的降阻填包料为石膏粉、膨润土及复合盐组成的混合物，来源广，成本低；防腐降阻模块为普通的镁合金、铝合金或锌合金，成分要求不严格，形状简单；对于土壤电阻率高的沙土地，采用镁合金降电阻模块，对于干旱地区采用铝或锌降电阻模块；适用范围广，降低电阻明显，一个输电线杆塔安装一个降低接地网电阻的模块就能够保证输电线的泄流作用达到设计要求，使接地网的电阻降低原来的5倍以上。The beneficial effect of the present invention is that the module for reducing the resistance of the grounding grid in the present invention has simple construction and does not require deep excavation. The resistance-reducing casing is made of cement products, and the internal resistance-reducing packing material is composed of gypsum powder, bentonite and compound salt. The mixture has a wide range of sources and low cost; the anti-corrosion and resistance-reducing module is an ordinary magnesium alloy, aluminum alloy or zinc alloy, and the composition requirements are not strict and the shape is simple; Aluminum or zinc resistance-reducing modules are used in the area; the application range is wide, and the resistance reduction is obvious. Installing a module for reducing the resistance of the grounding grid on a transmission line tower can ensure that the leakage effect of the transmission line meets the design requirements, so that the resistance of the grounding grid is reduced. More than 5 times.
附图说明Description of drawings
图1是本发明降低接地网电阻的模块的剖面图。Fig. 1 is a cross-sectional view of a module for reducing ground grid resistance in the present invention.
图中，1.降阻套管，2.防腐降阻模块，3.第一装配线，4.降阻填包料，5.土壤，6.第二装配线，7.布袋，21.骨架，22.合金材料。In the figure, 1. Resistance-reducing bushing, 2. Anti-corrosion resistance-reducing module, 3. First assembly line, 4. Resistance-reducing packing material, 5. Soil, 6. Second assembly line, 7. Cloth bag, 21. Skeleton, 22 .Alloy materials.
具体实施方式detailed description
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明降低接地网电阻的模块，如图1所示，包括降阻套管1、第一装配线3和第二装配线6，降阻套管1的顶部设有盖子，降阻套管1的底部设有底座，降阻套管1上均匀设有若干通孔，通孔增加了与土壤的接触面积，有利于泄流的分散，通孔的总面积为降阻套管外表面面积的1/4-2/3，降阻套管1内设有防腐降阻模块2，防腐降阻模块2包括骨架21和浇注在骨架21外围的合金材料22，合金材料22为镁合金、锌合金或铝合金，防腐降阻模块2与降阻套管1之间由内向外依次设有降阻填包料4及土壤5，降阻填包料4为由石膏粉、膨润土及复合盐按重量比为1：1：1组成的混合物，复合盐中的盐与土壤中所含的盐相同，土壤5与降阻填包料4之间设有布袋7，防腐降阻模块2和降阻填包料4均设置于布袋7内，防腐降阻模块2和降阻填包料4均设置于布袋7内，第一装配线3的一端通过铜螺栓与骨架21连接，另一端依次穿过降阻填包料4、土壤5和降阻套管1后与接地网连接，第二装配线6的一端与降阻套管1的外壁连接，另一端与接地网连接。The module for reducing the resistance of the ground grid in the present invention, as shown in Figure 1, includes a resistance reducing bushing 1, a first assembly line 3 and a second assembly line 6, the top of the resistance reducing bushing 1 is provided with a cover, and the bottom of the resistance reducing bushing 1 A base is provided, and a number of through holes are evenly arranged on the drag reducing sleeve 1. The through holes increase the contact area with the soil, which is conducive to the dispersion of the leakage. The total area of the through holes is 1/ of the outer surface area of the drag reducing sleeve. 4-2/3, the anti-corrosion and resistance-reducing module 2 is installed inside the resistance-reducing bushing 1. The anti-corrosion and resistance-reducing module 2 includes a skeleton 21 and an alloy material 22 poured on the periphery of the skeleton 21. The alloy material 22 is magnesium alloy, zinc alloy or aluminum Alloy, anti-corrosion resistance reducing module 2 and resistance reducing casing 1 are provided with resistance reducing packing material 4 and soil 5 successively from inside to outside, and resistance reducing packing material 4 is made of gypsum powder, bentonite and compound salt in weight ratio A mixture composed of 1:1:1, the salt in the compound salt is the same as that contained in the soil, a cloth bag 7 is set between the soil 5 and the drag-reducing packing material 4, the anti-corrosion drag-reducing module 2 and the drag-reducing packing material 4 are all arranged in the cloth bag 7, the anti-corrosion resistance reducing module 2 and the resistance reducing packing material 4 are both arranged in the cloth bag 7, one end of the first assembly line 3 is connected with the skeleton 21 through copper bolts, and the other end passes through the resistance reducing packing in turn The material 4, the soil 5 and the resistance-reducing bushing 1 are connected to the grounding grid, and one end of the second assembly line 6 is connected to the outer wall of the resistance-reducing bushing 1, and the other end is connected to the grounding grid.
本发明降低接地网电阻的模块的安装过程如下：现场安装时，先将防腐降阻模块2与第一装配线3连接，同时再将降阻套管1的外壁与第二装配线6连接，然后再直接将降阻套管1埋于地下，降阻套管1的底部要略低于地网的埋设深度，降阻套管1的顶部与地面相平；将连接有第一装配线3的防腐降阻模块2放入布袋7内，一同置于降阻套管1内，用降阻填包料4装满布袋7，用细土壤5填满布袋7与降阻套管1之间空隙，再将第一装配线3及第二装配线6与接地网相连接，最后浇水、封盖即可。The installation process of the module for reducing the resistance of the grounding grid in the present invention is as follows: when installing on site, first connect the anti-corrosion and resistance-reducing module 2 with the first assembly line 3, and at the same time connect the outer wall of the resistance-reduction casing 1 with the second assembly line 6, and then Directly bury the resistance reducing sleeve 1 underground, the bottom of the resistance reducing sleeve 1 should be slightly lower than the buried depth of the ground grid, and the top of the resistance reducing sleeve 1 should be level with the ground; Put the resistance module 2 into the cloth bag 7, and place them together in the resistance reducing sleeve 1, fill the cloth bag 7 with the resistance reducing filling material 4, fill the gap between the cloth bag 7 and the resistance reducing sleeve 1 with fine soil 5, and then Connect the first assembly line 3 and the second assembly line 6 with the grounding grid, and finally water and cover.
后期维护或更换防腐降阻模块2时，直接将降阻套管1的盖子打开，取出失效的骨架（即阳极），拆下第一装配线3与新的骨架连接并正常安装。本发明降低接地网电阻的模块安装及更换简便，不破坏已有建筑和周围环境，操作方便快捷。When maintaining or replacing the anti-corrosion and resistance-reducing module 2 in the later period, directly open the cover of the resistance-reducing bushing 1, take out the failed framework (ie, the anode), remove the first assembly line 3 and connect it with a new framework and install it normally. The module for reducing the resistance of the grounding grid in the invention is easy to install and replace, does not damage existing buildings and surrounding environments, and is convenient and quick to operate.
本发明降低接地网电阻的模块的设计原理：本发明基于镁合金、铝合金或锌合金的接地电阻小于碳钢，又是电的良导体，防腐降阻模块2表面积比较大，有利于电流向土壤中排泄；在防腐降阻模块2外添加了降阻填包料4，保证了防腐降阻模块2的接触电阻小于直接与土壤的接触电阻，从而达到降低接地网接触电阻的目的；另外，降阻填包料4又可以防止防腐降阻模块2由于腐蚀氧化表面生成氧化膜；由于氧化膜的电阻高于材料本体，因此防止氧化膜的生成是本发明的另一个关键；除此之外，降阻填包料4与土壤的接触电阻小，减少了直接将防腐降阻模块2与土壤接触电阻，又进一步降低了防腐降阻模块2的电阻；镁合金、铝合金或锌合金的电极电位比碳钢的电极电位低，对原来的接地网有防护作用。The design principle of the module for reducing the resistance of the grounding network in the present invention: the grounding resistance of the present invention is based on magnesium alloy, aluminum alloy or zinc alloy is smaller than that of carbon steel, and it is also a good conductor of electricity. Excretion in the soil; the resistance-reducing packing material 4 is added outside the anti-corrosion and resistance-reducing module 2 to ensure that the contact resistance of the anti-corrosion and resistance-reducing module 2 is smaller than the contact resistance directly with the soil, thereby achieving the purpose of reducing the contact resistance of the grounding grid; in addition, The resistance-reducing packing material 4 can prevent the anti-corrosion and resistance-reducing module 2 from forming an oxide film on the oxidized surface due to corrosion; since the resistance of the oxide film is higher than that of the material body, preventing the generation of the oxide film is another key of the present invention; in addition , the contact resistance between the resistance-reducing resistance-reducing packing material 4 and the soil is small, which reduces the direct contact resistance between the anti-corrosion resistance-reduction module 2 and the soil, and further reduces the resistance of the anti-corrosion resistance reduction module 2; the electrodes of magnesium alloy, aluminum alloy or zinc alloy The potential is lower than the electrode potential of carbon steel, which has a protective effect on the original grounding grid.
实施例1Example 1
降阻套管1的底部有底座，顶部设置盖子，降阻套管1的横截面为圆形，降阻套管1的材质选择导电水泥；降阻套管1的套管外径内径管壁高1000mm，降阻套管1的管壁上开孔50个，各孔呈均匀分布，降阻套管1的管壁上安装2支标准双头铜螺栓，双头铜螺栓连接有第二装配线6，降阻套管1的底座厚50mm，底座上开的孔4个，盖子尺寸为 The bottom of the resistance reducing sleeve 1 has a base, and the top is provided with a cover. The cross section of the resistance reducing sleeve 1 is circular, and the material of the resistance reducing sleeve 1 is conductive cement; the outer diameter of the resistance reducing sleeve 1 is the inside diameter of The height of the pipe wall is 1000mm, and the pipe wall of the drag reducing sleeve 1 is opened There are 50 holes, each hole is evenly distributed, and 2 standard Double-ended copper bolts, the double-ended copper bolts are connected with the second assembly line 6, the base of the resistance reducing sleeve 1 is 50mm thick, and the opening on the base is 4 holes, the cover size is
防腐降阻模块2的横截面为圆形，中心为60×6×900mm碳钢制备的骨架21，骨架21外围浇注有镁合金，骨架一端露出镁合金100mm，用铜螺栓与第一装配线3连接；The cross-section of the anti-corrosion resistance reducing module 2 is circular, and the center is a framework 21 made of carbon steel of 60×6×900 mm. The periphery of the framework 21 is cast with magnesium alloy. One end of the framework exposes 100 mm of the magnesium alloy, and is connected to the first assembly line 3 with copper bolts ;
降阻套管1埋入地下，埋设深度略低于接地网扁钢，将防腐降阻模块2置于填包料布袋7中，一同放入降阻套管1内，在布袋7内装满降阻填包料4，在布袋7与套管1之间填满土壤5，浇水、封盖即可，第一装配线3及第二装配线6均与接地网扁钢连接。The resistance-reducing casing 1 is buried underground, and the depth of burial is slightly lower than that of the grounding grid flat steel. The resistance-reducing packing material 4 is filled with the soil 5 between the cloth bag 7 and the casing 1, watered and covered. The first assembly line 3 and the second assembly line 6 are connected to the grounding grid flat steel.
实施例2Example 2
降阻套管1的底部有底座，顶部设置盖子，降阻套管1的横截面为圆形，降阻套管1的材质选择导电水泥；降阻套管1的套管外径内径管壁高1000mm，降阻套管1的管壁上开孔50个，各孔呈均匀分布，降阻套管1的管壁上安装2支标准双头铜螺栓，双头铜螺栓连接有第二装配线6，降阻套管1的底座厚50mm，所述底座上开的孔4个，盖子尺寸为 The bottom of the resistance reducing sleeve 1 has a base, and the top is provided with a cover. The cross section of the resistance reducing sleeve 1 is circular, and the material of the resistance reducing sleeve 1 is conductive cement; the outer diameter of the resistance reducing sleeve 1 is the inside diameter of The height of the pipe wall is 1000mm, and the pipe wall of the drag reducing sleeve 1 is opened There are 50 holes, each hole is evenly distributed, and 2 standard Double-ended copper bolts, the double-ended copper bolts are connected with the second assembly line 6, the base of the resistance reducing sleeve 1 is 50mm thick, and the opening on the base is 4 holes, the cover size is
防腐降阻模块2的横截面为圆形，中心为60×6×900mm碳钢制备的骨架21，骨架21外围浇注有铝合金，骨架一端露出铝合金100mm，用铜螺栓与第一装配线3连接；The cross-section of the anti-corrosion resistance reducing module 2 is circular, and the center is a framework 21 made of carbon steel of 60×6×900mm. The periphery of the framework 21 is poured with aluminum alloy, and the aluminum alloy 100mm is exposed at one end of the framework. It is connected to the first assembly line 3 with copper bolts ;
降阻套管1埋入地下，埋设深度略低于接地网扁钢，将防腐降阻模块2置于填包料布袋7中，一同放入降阻套管1内，在布袋7内装满降阻填包料4，在布袋7与套管1之间填满土壤5，浇水、封盖即可，第一装配线3及第二装配线6均与接地网扁钢连接。The resistance-reducing casing 1 is buried underground, and the depth of burial is slightly lower than that of the grounding grid flat steel. The resistance-reducing packing material 4 is filled with the soil 5 between the cloth bag 7 and the casing 1, watered and covered. The first assembly line 3 and the second assembly line 6 are connected to the grounding grid flat steel.
实施例3Example 3
降阻套管1的底部有底座，顶部设置盖子，降阻套管1的横截面为圆形，降阻套管1的材质选择导电水泥；降阻套管1的套管外径内径管壁高1000mm，降阻套管1的管壁上开孔50个，各孔呈均匀分布，降阻套管1的管壁上安装2支标准双头铜螺栓，双头铜螺栓连接有第二装配线6，降阻套管1的底座厚50mm，所述底座上开的孔4个，盖子尺寸为 The bottom of the resistance reducing sleeve 1 has a base, and the top is provided with a cover. The cross section of the resistance reducing sleeve 1 is circular, and the material of the resistance reducing sleeve 1 is conductive cement; the outer diameter of the resistance reducing sleeve 1 is the inside diameter of The height of the pipe wall is 1000mm, and the pipe wall of the drag reducing sleeve 1 is opened There are 50 holes, each hole is evenly distributed, and 2 standard Double-ended copper bolts, the double-ended copper bolts are connected with the second assembly line 6, the base of the resistance reducing sleeve 1 is 50mm thick, and the opening on the base is 4 holes, the cover size is
防腐降阻模块2的横截面为圆形，中心为60×6×900mm碳钢制备的骨架21，骨架21外围浇注锌合金，骨架一端露出锌合金100mm，用铜螺栓与第一装配线3连接；The cross-section of the anti-corrosion resistance reducing module 2 is circular, and the center is a framework 21 made of carbon steel of 60×6×900 mm. The periphery of the framework 21 is cast with zinc alloy. One end of the framework exposes 100 mm of the zinc alloy, and is connected to the first assembly line 3 with copper bolts;
降阻套管1埋入地下，埋设深度略低于接地网扁钢，将防腐降阻模块2置于填包料布袋7中，一同放入降阻套管1内，在布袋7内装满降阻填包料4，在布袋7与套管1之间填满土壤5，浇水、封盖即可，第一装配线3及第二装配线6均与接地网扁钢连接。The resistance-reducing casing 1 is buried underground, and the depth of burial is slightly lower than that of the grounding grid flat steel. The resistance-reducing packing material 4 is filled with the soil 5 between the cloth bag 7 and the casing 1, watered and covered. The first assembly line 3 and the second assembly line 6 are connected to the grounding grid flat steel.
本发明降低接地网电阻的模块，施工简单，不需要深开挖，降阻套管1为水泥制品，内部的降阻填包料4为石膏粉、膨润土及复合盐组成的混合物，来源广，成本低；防腐降阻模块2为普通的镁合金、铝合金或锌合金，成分要求不严格，形状简单；对于土壤电阻率特别高的沙土地，采用镁合金降电阻模块，对于干旱地区采用铝或锌降电阻模块；适用范围广，降低电阻明显，一个输电线杆塔安装一个降低接地网电阻的模块就能够保证输电线的泄流作用达到设计要求，使接地网的电阻降低原来的5倍以上。The module for reducing the resistance of the grounding grid in the present invention has simple construction and does not require deep excavation. The resistance-reducing casing 1 is made of cement, and the internal resistance-reducing packing material 4 is a mixture of gypsum powder, bentonite and compound salt, and has a wide range of sources. Low cost; the anti-corrosion and resistance-reducing module 2 is an ordinary magnesium alloy, aluminum alloy or zinc alloy, and the composition requirements are not strict, and the shape is simple; for sandy soil with particularly high soil resistivity, a magnesium alloy resistance-reducing module is used, and an aluminum alloy is used for arid areas. Or zinc resistance drop module; wide application range and obvious resistance reduction. Installing a module that reduces the resistance of the grounding grid on a transmission line tower can ensure that the leakage effect of the transmission line meets the design requirements, reducing the resistance of the grounding grid by more than 5 times. .
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