Experimental Study on the Impulse-voltage Transmission Characteristics of Inductive Voltage Transformers
Experimental Study on the Impulse-voltage Transmission Characteristics of Inductive Voltage Transformers
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发表时间：
2011
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通讯作者：
C. Peng
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作者：
C. Peng
【摘要】：针对电力系统继电保护,暂态保护可以提高保护动作时间,因此有必要对互感器的传输特性进行研究。通过高压脉冲对感应式电压互感器的冲击电压传输特性进行研究。结果表明,传输过程中的静电感应可以无时滞地传递来自初级绕组的脉冲信号和极性,感应式电压互感器绕组的传输函数是线性函数,并且在传输过程中自由振荡的大小和时间。次级波形随着来自初级绕组的脉冲波前时间的减少而增加。
For the relay protection of a power system,the transient-based protection can improve the protection operation time,so it is necessary to study the transmission characteristics of instrument transformers.The impulse-voltage transmission characteristics of inductive voltage transformers were studied through the high voltage impulse.Results reveal that,the electrostatic induction in the transmission progress can transfer the signal and polarity of the impulses from primary windings with no time-delay,the transmission function of the inductive voltage transformers' windings is a linear function,and the value and time of the free oscillation in the secondary waveform increase with the decrease of the front time of the impulse from the primary winding.