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太焦线长治北至高平段,特别是东田良至赵庄间,由于线路坡度大(限坡12‰),曲线半径小,列车密度大,又处于两个牵引变电所供电臂的末端,致使牵引网的网压变化很大,常低于技规规定标准(21kV)。网压过低不仅影响机车的运行速度,而且影响辅助机组的正常运行。因为在负载不变的情况下,网压降低必然增加电机电流,使电机过热,并将造成空气压缩机等辅助电机起动困难。
Too much focal line Changzhi North to Gao Ping, especially from Dong Liangliang to Zhao Zhuang, due to the large line slope (slope 12 ‰), the curve radius is small, the train density, but also in the two ends of the traction substation power arm , Resulting in traction net pressure varies widely, often lower than the technical regulations (21kV). Net pressure is too low not only affect the locomotive speed, but also affect the normal operation of auxiliary units. Because under the condition of constant load, the decrease of network pressure inevitably increases the motor current, which overheats the motor and will cause difficulty in start-up of auxiliary motors such as air compressors.