摘要
为研究PT发生铁磁谐振现象时的特征,以一个中压三相电压互感器为例,建立了一个基于PSCAD/EMTDC的PT仿真模型.针对系统电压、断路器开断时刻以及系统串联电容等不同参数,做了大量的仿真试验,通过分析试验结果,得到了PT发生铁磁谐振时的几种行为模式,并能用过电压和电压波形失真率等参数对不同频率的铁磁谐振进行识别,这对铁磁谐振的检测有重要的使用价值.
This paper took a medium voltage three-phase voltage transformer（PT） as an example, analyzed the characteristics of the PT ferromagnetic resonance, and developed a PT simulation model which based on PSCAD/EMTDC. A large number of simulation test for different parameters（Such as the system voltage, the circuit breaker tripping times and series capacitance, etc） has been completed. Through the analysis of test results, this study obtained several kinds of behavior patterns of PT ferromagnetic resonance, and the different frequencies of ferroresonance can be identified by using parameters such as over voltage and voltage waveform distortion rate. It is of great significance to the detection of ferromagnetic resonance.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2015年第6期750-753,共4页
Journal of Liaoning Technical University (Natural Science)
