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为了满足某些110kV线路区内故障时全线速动的要求，对原有LFP—941型微机保护软件稍加改动，增加了以顺序重合闸方式实现全线速动的功能，产生了LFP-941J型保护。在110kV线路广泛使用微机保护的情况下，该项改进具有较大实用价值。
In order to meet some of the 110kV line area fault full speed requirements, the original LFP-941-type microcomputer software to slightly change, an increase of order to achieve full-speed reclosing function, resulting in LFP-941J protection. In the 110kV line extensive use of computer protection, the improvement has great practical value.