为了准确反映电力机车的负载电流或短路电流，应将接触导线和正馈线上的电流互感器次边差接。
In order to measure accurately the load of electric locomotives and short circuit current, the secondary side of CTs connected with catenary and feeder should be connected in differential mode.
复线上下行接触网互为正馈线方式作为一种设想，在上世纪70年代就曾经被提出过，但对其电气特性分析则未见有过报道。
OCS being positive feeders to each other in double track lines, as an assumption, was being proposed in early 70s last century, however, there was no any analysis on its characteristics reported.
复线上下行接触网互为正馈线方式作为一种设想，在上世纪70年代就曾经被提出过，但对其电气特性分析则未见有过报道。
OCS being positive feeders to each other in double track lines, as an assumption, was being proposed in early 70s last century, however, there was no any analysis on its characteristics reported.
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