Effect of voltage waveform on partial discharge in ferroelectric pellet layer for gas cleaning
Effect of voltage waveform on partial discharge in ferroelectric pellet layer for gas cleaning
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电压波形对气体净化铁电颗粒层局部放电的影响
DOI：
10.1109/ias.1990.152152
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
Ken Okazaki
中科院分区：
文献类型：
--
作者：
Akira Mizuno;Yoshifumi Yamazaki;Sadami Obama;Eiki Suzuki;Ken Okazaki
研究了利用局部放电促进的等离子体化学反应来净化火电厂烟气。已经使用不同频率的交流电压或使用方波电压研究了铁电颗粒层中的局部放电特性。该层的电容 C/sub t/ 由铁电颗粒的电容 C/sub p/ 和每个颗粒之间的气隙电容 C/sub g/ 组成。由于C/sub g/远小于C/sub p/，因此该层的电容主要由C/sub p/决定。因此，填充具有大介电常数值的铁电颗粒不会显着增加C/sub t/的值，并且可以避免电容充电电流的过度增加。当施加交流电压时，局部放电在电压过零时发生，并在电压达到正或负峰值时停止。当施加方波电压时，在电压瞬变期间可以获得非常大的电流。<<ETX>>
Thermal power plant flue gas cleaning utilizing plasma chemical reactions promoted with partial discharges is studied. Characteristics of a partial discharge in a ferroelectric pellet layer have been studied using AC voltages with varying frequency or using square-wave voltages. The capacitance of the layer, C/sub t/, consists of the capacitance of the ferroelectric pellet, C/sub p/, and the capacitance of the air gap between each pellet, C/sub g/. Since C/sub g/ is much smaller than C/sub p/, the capacitance of the layer is determined mainly by C/sub p/. Therefore, packing of ferroelectric pellets with large dielectric constant values does not increase the value of C/sub t/ significantly, and excessive increase in the capacitive charging current can be avoided. With AC voltage application, the partial discharge takes place when the voltage crosses zero and ceases when the voltage reaches positive or negative peak value. When a square wave voltage is applied, a very large current can be obtained during the transient period of the voltage.<<ETX>>