The copper-clad steel grounding pole is an important part of the HVDC transmission system. Grounding electrode welding is divided into grounding pole steel butt and grounding pole and cable T connection 2 kinds. The former can be used for electric welding and can also be used for Shian brand exothermic welding, but both need to ensure the electrical performance and corrosion resistance of the welding point; the latter suggests the use of DC transmission grounding welding design. The grounding pole is an important component of the DC transmission system. section. When the HVDC power transmission system is operated in single-loop operation mode, the grounding electrode is used as the return channel of the DC operating current to transmit electric energy. When the system is operated in the bipolar mode, the grounding electrode acts as the neutral point potential of the converter valve of the inverting converter station. The role of the protection of the converter station converter safe operation. What we want to introduce here is one of the things that needs special attention in the design of the grounding electrode: the welding of the grounding electrode. Firstly, according to the design drawings, a copper-clad steel grounding pole should be installed. The distance between the copper-clad steel grounding poles should be strictly in accordance with the requirements. The grounded copper-clad steel poles that are driven into the ground should be generally high, and they must not differ too much, and then they must be The copper clad steel grounding pole is laid with a copper-clad steel strand. After all preparations are completed, the copper clad steel grounding electrode and the copper-clad steel stranded wire are connected. The next step is to make preparations for the next step of the connection. First of all, prepare heat-dissipating welding molds, solder powder, cleaning brushes, and all other equipment. Be prepared to clean up the contaminants on the grounding electrodes of the copper clad steel strand and the copper clad steel. The connection adopts high-temperature exothermic fusion welding. The high-purity exothermic welding powder produced by Hebei Chengan Lightning Protection Equipment Technology Co., Ltd. has high-purity exothermic welding powder with no residue and no corrosive phenomenon. Thicker surface copper layer (average thickness greater than 0.3mm) corrosion resistance, service life (more than 30 years), maintenance-free.
The exothermic fusion welding has been welcomed by more and more users in the construction process because of its convenient and excellent performance. It has become an important connection method in today's grounding engineering. Exothermic fusion welding is an important connection method in the power process. According to the corresponding norms and methods, exothermic fusion welding is the ability to obtain high-quality dense, non-defective welded joints under certain welding conditions. For fusion welding, the welding process generally undergoes heat transfer and metallurgical reactions. Exothermic fusion welding refers to the level of influence on the properties and defects of the heat affected zone in the welding heat process. Assessing the sensitivity of the weld metal to heat has a direct relationship with the material being welded and the welding process conditions. Metallurgical weldability refers to the level of influence of the metallurgical reaction on the properties and defects of the weld. The welding type of the copper clad steel grounding electrode is due to various factors. At present, the design of the domestic grounding electrode basically adopts the form of a horizontal shallow-buried grounding electrode, and the grounding materials are all copper clad steel products.
The exothermic fusion welding has been welcomed by more and more users in the construction process because of its convenient and excellent performance. It has become an important connection method in today's grounding engineering. Exothermic fusion welding is an important connection method in the power process. According to the corresponding norms and methods, exothermic fusion welding is the ability to obtain high-quality dense, non-defective welded joints under certain welding conditions. For fusion welding, the welding process generally undergoes heat transfer and metallurgical reactions. Exothermic fusion welding refers to the level of influence on the properties and defects of the heat affected zone in the welding heat process. Assessing the sensitivity of the weld metal to heat has a direct relationship with the material being welded and the welding process conditions. Metallurgical weldability refers to the level of influence of the metallurgical reaction on the properties and defects of the weld. The welding type of the copper clad steel grounding electrode is due to various factors. At present, the design of the domestic grounding electrode basically adopts the form of a horizontal shallow-buried grounding electrode, and the grounding materials are all copper clad steel products.
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