Dynamic Voltage Regulator ( DVR) can restraint voltage sags, eliminate voltage harmonics and ripples, and have become a hot topic of researchers all over the world. 为解决动态电压调节器(DVR)研制中的一类关键问题&耦合变压器激磁涌流问题,对DVR的控制策略进行了研究。
Switch Instantaneous voltage Restraint of Large Capacity IGBT Inverter 大容量IGBT逆变器的开关瞬态电压抑制
A new high voltage restraint mode which is different from traditional driver is used in power amplifier. 在功放级采用了一种异于传统驱动器的新颍高压抑制方式。
The traditional traveling-wave differential protection cannot be applied to ultra/ extra high voltage transmission line with shunt reactor, so this paper describes a novel differential current expression. Based on traveling-wave differential protection a new scheme with low proportional restraint characteristic is presented. 传统的行波差动保护无法应用于带并联电抗器特/超高压输电线路,为此给出了一种新的行波差流表达式,并据此提出一种具有轻微比例制动特性的行波差动保护实用方案。
Electromagnetic Operated Over Voltage and Its Restraint 电磁操作过电压及其抑制
Sometimes low voltage restraint outbreaking with high wave, slow waves and spikes appeared in 17 cases while wide low voltage restraint occurred in 10 cases, but false normal EEG appeared in 1 case. 发作期脑电图17例表现为高波幅慢波夹杂棘波爆发-低电压抑制,10例表现为全脑各导呈广泛性低电压抑制,1例表现为假性正常脑电图改变。
The allowable voltage peak value of UHV transmission line is directly associated with the factors such as voltage duration and so on. Therefore, the over-voltage restraint must be concerned especially in the action of protection and its relevant controlling devices of UHV transmission line. 特高压输电线所允许的电压升高的数值与所加电压的持续时间等因素直接相关,因此特高压输电线继电保护与相关自动装置的动作必须考虑限制过电压。