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高压电器  2014 

脉冲电压在电压互感器极性测试中的应用

, PP. 116-120

Keywords: 电压互感器,极性,二次侧接线,脉冲电压

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Abstract:

电压互感器(PT)二次侧接线极性正确与否关系到继电保护装置能否正确动作,关系到整个电力系统的稳定运行。为适应智能电网的建设要求,研制电压互感器二次侧极性智能测试装置显得十分必要。传统的通正弦交流电压的方法,微处理器采样时,需要分析一次、二次电压的相位,且存在时钟同步、数据量处理较大等问题。笔者提出了一种新的PT极性判别方法,该方法在互感器一次侧施加脉冲电压,根据二次侧感应电压波形来检测二次侧接线正确性。

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