Qiao Kun, Zhu Anping, Wang Baoming, Di Chengrui, Yu Junwei, Zhu Bo
School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, China.
Carbon Fiber Engineering Research Center, Shandong University, Jinan 250061, China.
Materials (Basel). 2020 Mar 31;13(7):1592. doi: 10.3390/ma13071592.
The heat resistant aluminum alloy wire composite material core conductor (ACCC/HW) which was used in overhead transmission lines is developed and studied in this work. The composite material core is carbon fiber/glass cloth reinforced modified epoxy resin composite. Tensile stress tests and stress-strain tests of both composite core and conductor are taken at 25 °C and 160 °C. Sag test, creep test and current carrying capacity test of composite conductor are taken. The stress of composite conductor are 425.2 MPa and 366.9 MPa at 25 °C and 160 °C, respectively. The sag of conductor of 50 m length are 95 mm, 367 mm, and 371 mm at 25 °C, 110 °C, and 160 °C, respectively. The creep strain are 271 mm/km, 522 mm/km, and 867 mm/km after 10 years under the tension of 15% RTS (Rated Tensile Strength), 25% RTS and 35% RTS at 25 °C, and 628 mm/km under 25% RTS at 160 °C, according to the test result and calculation. The carrying capacity of composite conductor is basically equivalent to ACSR (Aluminum Conductor Steel Reinforced). ACCC/HW is suitable in overhead transmission lines, and it has been used in 50 kV power grid, according to the results.
本文对用于架空输电线路的耐热铝合金丝复合材料芯导线（ACCC/HW）进行了开发与研究。该复合材料芯为碳纤维/玻璃布增强改性环氧树脂复合材料。对复合材料芯和导线分别在25℃和160℃下进行了拉伸应力试验和应力应变试验。对复合材料导线进行了弧垂试验、蠕变试验和载流量试验。复合材料导线在25℃和160℃时的应力分别为425.2MPa和366.9MPa。50m长导线在25℃、110℃和160℃时的弧垂分别为95mm、367mm和371mm。根据试验结果和计算，在25℃下，15%额定抗拉强度（RTS）、25%RTS和35%RTS张力下10年后的蠕变应变分别为271mm/km、522mm/km和867mm/km，在160℃下25%RTS时为628mm/km。复合材料导线的载流量基本与钢芯铝绞线（ACSR）相当。结果表明，ACCC/HW适用于架空输电线路，已应用于50kV电网。
