Research on overvoltage output of SPWM inverter after short-circuit fault disappears in a short time;
在现有行波测距装置的基础上,提出线路受雷击和出现短路故障的识别新方法。
Verify that the DC side load converter dynamic stability characteristics under short-circuit fault conditions.
验证短路故障条件下,直流侧的负载转换器的动态稳定的特点。
This paper analyzes and researches a serious load loss accident arising from complex phase-to-phase grounding short-circuit fault.
分析和研究了一起复杂相间接地短路故障引起的大量负荷瞬间损失事故。
The formula of the rectifier's overshoot current of bidirectional 12-pluse DC system when DC line short-circuit fault occurs is derived.
针对双桥十二脉动直流系统,推导了直流线路发生短路故障时的整流器过冲电流公式。
The electromagnetic characteristic and the relevant electrical parameters are analyzed when inter turn short-circuit fault on generator rotor windings occurs.
对汽轮发电机发生转子绕组匝间短路故障后,电磁特性和电气参量的变化进行了分析。
Short-circuit fault model simulation results show that the locomotive starting current is similar to the remote short-circuit current will affect the DC line protection.
短路故障模型的仿真结果表明机车起动电流和远端短路电流的相似会对直流馈线保护造成影响。
A new excitation control strategy is proposed for the rotor side converter in an AC excited wind-power generator to allow the system to ride through the grid short-circuit fault.
提出一种电网短路故障时保持交流励磁风力发电机不脱网运行的新型励磁控制策略。
The unit includes remote error sensing and numerous fault protection features, including continuous short circuit protection (with automatic recovery), output.
每一转换器都具有误差遥测特性和各种故障保护特性,包括连续的短路保护(自动恢复)输出特性。
Can reliably determine, within the community and bounds detection ma level and zero-sequence current phase short circuit fault current, automatic removal of single-phase ground fault and phase fault.
能可靠判断、检测界内与界外毫安级零序电流及相间短路故障电流,实现自动切除单相接地故障和相间短路故障。
An included Electronic Ground Fault circuit Interrupter immediately terminates power if the unit is exposed to water or other liquids that could cause a short circuit.
包括一个电子接地故障断路器立即终止权,如果该单位是暴露于水或其他液体,可能导致短路。
In order to restrict the rising rate of fault current caused by short circuit on one arm of bridge of inverter, a kind of device named current loop protection circuit can be adopted.
为了限制逆变器桥臂直通短路时故障电流的上升率,可以在装置的直流侧安装一种称为“环流保护电路”的附加电路。
The phase and the size of all branch currents of the 13,104 kinds of fault of short circuit were calculated thoroughly thorough " mufti - bop analysis ".
应用“多回路分析法”深入、详尽地计算了13 104种短路故障的全部分支电流的大小和相位。
Based on the analysis of AC impedance and two poles voltage test data, the reason of turn - to - turn short circuit fault caused by having copper dregs in generator rotor winding was found.
基于交流阻抗和两极电压试验数据的分析,发现发电机转子绕组因存在铜渣而造成匝间短路故障的原因。
The method to check short-circuit point between parallel conductors in transformer winding by Gaussmeter and to repair fault point are introduced.
介绍了运用高斯计来探查变压器绕组内并联导线间短路点,并对故障点进行修复的方法。
The transient numeric simulation and relevant experiments of stator winding inter-turn short circuit fault of asynchronous motor are conducted using multi-loop mathematic model.
基于多回路数学模型,对异步电动机定子绕组匝间短路故障瞬变过程做了数字仿真,并完成了相关物理实验。
Meanwhile, the clamp circuit will limit the output voltage or current at a fixed value when they are abnormal that caused by a DUT short circuit or other fault in order to protect the device.
当被测dut发生短路或其他异常导致电流或电压过高时,钳位电路会将输出电压或电流限制在一个固定值上,以保护器件不被损坏。
Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
通过分析低压隔爆电动机的主要故障类型,针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
It is of great significance to investigate and improve the detection method of stator winding inter-turn short circuit fault in induction motors.
定子绕组匝间短路是异步电动机常见故障之一,因此研究其检测方法具有重要意义。
Based on the distributed parameter model for transmission line, a new fault location method for short circuit fault of two points on different phases of the power transmission line is presented.
基于高压输电线路的分布参数模型,使用线路两端电压、电流的正序和负序分量,对高压输电线路两点异相故障提出了一种新的测距算法。
Electromagneic characteristic of the interturn short circuit in turbo-generator rotor windings is analyzed. And a method of fault detection and diagnosis based on wavelet transform is presented.
分析了汽轮发电机发生转子绕组匝间短路故障时的电磁特性,提出了基于小波分析的故障检测与诊断方法。
The generator vibration characteristics caused by rotor winding interturn short circuit fault and imbalance fault are analyzed respectively.
分析了汽轮发电机转子绕组匝间短路故障和转子不平衡故障时定、转子径向振动特征。
The proper setting of threshold is crucial for the early prediction of the short circuit fault in the low-voltage distributed system when using the method of wavelet decomposition.
当采用小波分解方法对低压配电系统短路故障进行早期检测时,门限值的合理设置对故障检测的可靠性及灵敏度是至关重要的。
To prevent large short-circuit current fault burns.
防止大的短路电流烧伤故障点。
This article realizes the short circuit current calculation, power flow calculation, fault isolation's simulation and reconfiguration of the distribution network based on the VDNAP.
本文以VDNAP为基础实现了配网潮流及短路电流计算、配网故障隔离模拟及配网重构。
This paper introduces a novel short circuit fault current limiter applicable to the three-phase ungrounded power systems.
介绍了一种适用于三相不接地系统的短路故障限流器。
Using transient traveling waves generated by fault to locate single-phase earth fault or short circuit fault in distribution feeders mixed with overhead lines and cables is proposed.
该文提出利用线路故障产生的暂态行波实现配电架空线、电缆混合线路单相接地及相间短路故障测距,分析了故障初始行波模分量的暂态特征。
This article presents a new method to detect CT and PT wire break. This method can be used on generator micrcomputer based relay protection device against internal short circuit fault.
本文提出了一种有效的单片机发电机内部短路保护中电流互感器CT和电压互感器PT的断线判别方法。
It has these below characteristics: 1 to record power circuit historical data, short-circuits the time, the breakdown, the fault current, the breakdown do not be away from and so on.
纪录电力线路的历史数据,短路时刻、故障相别、故障电流、故障距离等。
The power supply shall be protected when any output operation in circuit short condition. The power supply shall be Auto restart when the fault condition is removed.
在任何时候,任何输入条件下,当输出操作在短路情况下,电源供应器将进入保护模式,当故障消失后,电源要能自动恢复正常。
The power supply shall be protected when any output operation in circuit short condition. The power supply shall be Auto restart when the fault condition is removed.
在任何时候,任何输入条件下,当输出操作在短路情况下,电源供应器将进入保护模式,当故障消失后,电源要能自动恢复正常。
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