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A New Scheme for Fault Phase Selection and Transmission Line Protection
Author(s): 
Pages: 34-37
Year: Issue:  16
Journal: AUTOMATION OF ELECTRIC POWER SYSTEMS

Keyword:  选相元件综合电流补偿电压相电流突变量;
Abstract: 通过对故障前数据的有效处理和选相过程的优化,延长了补偿电压突变量选相元件的工作时间,使之可在整个故障过程中发挥作用,并可在系统无振荡时的各种工况下正确指示故障相;通过所设计的保持元件和方向元件,克服了电流突变量选相结果无法有效保持且无方向性的缺点,提高了选相正确率;提出了综合电流选相原理,解决了一些稳态量选相元件在特殊工况下无法正常工作的难题;在对各种选相原理进行优化配置的基础上,设计并实现了一种性能突出的新型选相方案.
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