Reform of 220 kV GIS SF6 Pressure Protectio
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摘要: 介绍了GIS SF6保护的概况,分析了GIS SF6存在的设计缺陷、易误动等问题,阐述了改造的必要性;以母联开关2245甲为例，提出了利用PLC对GIS SF6改造的方案,并给出了GIS SF6保护进一步优化的建议。改造后使母联跳母线具有选择性，防止了事故的扩大。Abstract: The paper introduced general situation of GIS SF6 pressure protection,analyzed problems of design defect and faulty start existed in GIS SF6, discussed reform necessity.Taking bus-tie switch 2245 as example, it put forward a reform scheme used PLC for GIS SF6 and gave some further suggestions of optimal protection of GIS SF6. The reformed bus couple jumping with bus has selectivity, prevents accident to be expanded.
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