指出牵引变电所故障测距装置的精确度是动态变化的,应根据接触网、变电所设备及装置运行情况的变化及时调整故障测距整定值,以提高其精确度,提出电气化铁道复线并联供电时避免线路互感影响牵引变电所故障测距装置精确度的简便方法即复线单线化。 It is pointed out that the accuracy of the traction substation fault ranging device is changing dynamically. The fault ranging setting value should be adjusted in time according to the changes of the operation conditions of the equipment of contact network and substation, so as to improve its accuracy. Paralleling power supply to avoid mutual inductance affect the traction substation fault location accuracy of a simple method that single-lane double.