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。

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

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 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。

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。

Electromagnetic Operated Over Voltage and Its Restraint

电磁操作过 电压及其 抑制

Switching On off Over voltage of 500 kV Shunt Reactor and its Restraint Measure

500kV并联电抗器开断的过 电压及 限制措施

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。