110kV架空线路宜采用钢芯铝纹线，沿海及有腐蚀性气体的地区应选用防腐

110kV overhead lines should use steel-cored aluminum wire, and coastal areas and areas with corrosive gas should use anti-corrosion-type steel-cored aluminum wire [11]. In the case of reasonable technology and economy, the improvement of overhead lines should consider the use of new conductor materials. The conductor cross-section of the overhead lines should be selected according to the needs of long and short power supply capacity, according to the economic current density of the conductor, and according to the requirements of the limit transmission capacity under the failure mode Proofread. Generally, 2-3 specifications can be selected in the same area. Commonly, there are 300mm2, 400mm2 and <br>110kV power cables. If there are no special requirements, copper-core cables should be used, and single-core structures can be used. It is preferred to use cross-linked polyethylene for insulation. The cable interface should be selected according to the distance limit transmission capacity of the line. The medium voltage distribution network uses a 10kV voltage level. When a 110kV single main transformer adopts 50MVA, the 110kV cable section can be 630mm2, 800mm2.

110kV overhead line should use steel core aluminum thread, coastal and corrosive gas areas should be selected anti-corrosion steel core aluminum strands. Under reasonable circumstances of technology and economy, overhead line transformation should consider the use of new wire materials overhead line wire cross-section should be based on the needs of near and far power supply capacity, according to the economic current density of the wire selection, and in accordance with the failure mode of the limit transmission capacity requirements for proofreading. Generally in the same region can choose 2-3 specifications, common 300mm2, 400mm2<br>110kV power cable without special requirements should use copper core cable, can use a single-core structure. Priority is given to cross-linked polyethylene insulation. The cable interface should be selected according to the line's far and near limit delivery capacity. In the voltage distribution grid with 10kV voltage level, 110kV single main variable using 50MVA, 110kV cable cross-section can choose 630mm2, 800mm2.

110kV overhead line should be steel cored aluminum wire, coastal and corrosive gas areas should choose anticorrosive steel cored aluminum wire [11]. In the case of reasonable technology and economy, new conductor materials should be considered in the transformation of overhead lines. The conductor section of overhead lines should be selected according to the demand of far and near power supply capacity, according to the economic current density of conductors, and checked according to the requirements of ultimate transmission capacity under fault mode. Generally, 2-3 specifications can be selected in the same area, including 300mm2 and 400mm2<br>If there is no special requirement for 110kV power cable, copper core cable can be used, and single core structure can be used. XLPE insulation is preferred. The cable interface should be selected according to the limit transmission capacity of the line. When 10KV voltage level is used for medium voltage distribution network and 50MVA is used for 110kV single main transformer, the section of 110kV cable can be 630 mm ~ 2 or 800 mm ~ 2.<br>