阐述了改造原则是保证母线保护的完整运行，介绍了施工方案以及双母双分段母线保护在施工和调试中的问题及解决。
Problems encountered during the retrofit and debugging of bus protections for dual-bus dual-subsection wiring were analyzed and solutions were proposed.
以单母线分段接线方式为例，对本文提出的地区配电网络建模和拓扑分析方法进行验证；
A case of single bus with subsection connection is provided as an example which verifies the method in this paper;
大、中型工厂变电所主变压器低压侧常采用单母线分段的运行方式。
The low voltage side of the main transformers in the substations of large and middle-sized plants USES operation mode in the single-bus sections.
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