【摘要】 利用已推导出的公式,对十字交叉接线牵引变压器的电压损失进行了计算,通过与现场实际测试的对比,验证了电压损失计算公式的正确性,说明所采用的数学模型是实用有效的。十字交叉接线变压器与YNd11接线变压器类似,滞后相电压损失大于引前相。分析了大秦线电气化铁道采用十字交叉接线变压器的延庆牵引变电所55kV母线电压偏低的原因,并对改造方案进行了简要讨论。更多还原

【Abstract】 Using the formulas that have been derived out, voltage losses of the cross-connected traction transformer are calculated. A comparison between calculated results and field measurement values justifies the formulas and confirms the applicability of the mathematical model adopted for this transformer. The cross-connected transformer is similar to an YNd11 transformer. Its voltage loss of the lagging phase is larger than that of the leading phase. The causes that lead to the low voltage level of a 55kV bus-bar in Yanqing traction substation, which adopts the cross-connected transformer and is located in Datong-Qinhuangdao electrified railway, are analyzed and the countermeasures are discussed briefly.更多还原