一种基于自耦原理检查多抽头电流互感器二次接线的方法The Method Based on Self-coupling for Checking Secondary Connection of Multi-tap Current Transformer
姚慧,吴文联,吴靖
YAO Hui,WU Wenlian,WU Jing
摘要(Abstract)：
分析了电流法、电压法检查变压器套管电流互感器变比的原理以及主要特点,提出了一种基于多抽头电流互感器二次侧自耦原理的简便检查方法。通过试验验证和现场的实际应用情况可知,该方法相比于电流法和电压法,极大地简化了检查过程,有效降低工作量和规避作业风险,具有设备精简便携、试验接线简单、操作方便等优点,检查正确率达到100%。
The paper analyzes principles and main characteristics of current method and voltage method for checking transformation ratio between transformer and bushing current transformer and puts forward a simple check method based on self-coupling at secondary side of multi-tap current transformer. Through test validation and field application, it is proved that the new method, in contrast with current method and voltage method, can greatly simplify the check process, reduce the work load and avoid operation risks; it is also characterized by device portability, simple test connection, convenient operation, etc. The correct check rate can be up to 100%.
关键词(KeyWords)：
多抽头电流互感器;变压器套管;自耦;二次接线;变比
multi-tap current transformer;transformer bushing;self-coupling;secondary connection;transformer ratio
基金项目(Foundation):
作者(Author):
姚慧,吴文联,吴靖
YAO Hui,WU Wenlian,WU Jing
DOI: 10.19585/j.zjdl.2015.11.001
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