How To Avoid Overheating Of Overhead Ground Wire Wedge-type Tension Clamp

In the power system, the overheating points of high-voltage transmission lines usually occur at the dead end tension clamp connection points of the current-carrying conductors, while the discharge or overheating of overhead ground wires is extremely rare. my country stipulates that overhead ground wires should be installed along the entire line of 220kV and above transmission lines to reduce the probability of direct lightning strikes on the conductors. The 220kV transmission line open ground wire fiber optic dead end clamp usually uses galvanized steel stranded wire with a cross-sectional area of ​​not less than 35mm2 and is placed above the high-voltage transmission line. The open ground wire is connected to the grounding of each tower, and some fixed dead end clamp transmission line overhead ground wires extend to the substation incoming line structure. The overhead ground wire is installed in parallel with the 220kV transmission line, and there is induced electricity on the overhead ground wire. Although the induced electricity of the overhead ground wire is relatively high, the current is very small and will not cause overheating.