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。
The protect range is relational to short circuit type and phase when phase differential current connection mode is adopted.
当采用两相电流差接线方式时，保护范围与短路类型和短路相别有关。
The expression for short-circuit electrodynamic force of rectangular bus bars on the basis of the calculation of three-phase symmetry short-circuit current was fi.
本文首先根据系统发生三相对称短路时的短路电流，给出了三相矩形母线短路电动力的解析表达式。
Because the voltage measuring error increases when phase to phase short circuit occurs, distance relay protection will act improperly.
但是短线路在两相短路时，由于测量电压的误差会放大，可能引起距离保护的超越。
The relations between the currents of all phases and at both sides are drawn out by applying circuit theories and analyzing different inter phase short circuit faults of this kind transformer.
随后利用电路理论对这种变压器的各种相间短路故障进行了分析，得到了各种故障情况下变压器高低压侧各相电流间的关系。
The paper mainly introduces a kind of stimulatior, It emphasizes on the mathematical mode! of three phase short circuit breakdown and its showing methods.
为此，简单介绍了一套较完整的仿真系统，其中主要介绍了发电机组三相短路后电压、电流数学建模过程及图形化显示方法。
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。
It takes microprocessor as a core functions at automatic diagnosis of failures, such as overload, short phase and short circuit, and serial communications.
该保护器以单片机为核心，具有漏电、过载、断相、短路等多种故障自动诊断及串行通信等功能。
In the paper, the reduced single phase short-circuit current equation expressing as positive sequence impi dance only is showed.
文中还提出了低压系统中只用正序阻抗表达的单相短路电流的简化计算公式。
The A302 Manual Starter is a 3-phase manual motor starter and protector with instantaneous magnetic short circuit trip mechanism.
A302手动起动器是三相手动电动机起动器和保护装置，带有瞬间磁性短路跳闸机制。
At last, the accuracy, efficiency and feasibility are indicated by analyzing the simulation datum of the arc wrong-phase short circuit and the running of the electric locomotive.
最后，通过对牵引供电系统异相电弧短路和电力机车运行过程的仿真，验证了保护方案的正确性，有效性和可行性。
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。
Based on the detailed analysis of basic principle, the traditional three-phase short-circuit criterion of phase selection element based on sudden-change of phase current differential is improved.
在详细分析相电流差突变量选相基本原理的基础上，对传统相电流差突变量选相元件三相短路故障判据进行了改进。
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。
WJJL1 intelligence over current relay is a typical electronic apparatus which has over current, short circuit, over voltage, under curent, phase faults and starting failure protective functions.
WJJL1智能过流继电器是典型的电子、电器技术相结合的产品。具有过电流、短路、缺相、过欠压、欠电流、相失衡及启动故障等保护功能。
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。
The situations of the 11 phase brushless exciter in case of faults such as open circuit of one of diodes, short circuit of one of diodes, are analyzed.
故障工况包括一个二极管支路断开及一个二极管支路短路情况。
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。
With simulation by emtp it shows that both the random initial phase of short circuit current and the random direction and value of residual magnetism are the reason of above-mentioned phenomenon.
利用电磁暂态程序emtp进行机理分析的结果认为：短路电流起始相位的随机性以及互感器铁心剩磁方向的随机性会导致上述现象的出现。
According to the feature of distribution network structure, a practical short circuit calculation method based on fault current compensation and actual phase sequence presentation is put forward.
根据配电网的结构特点，提出了一种基于故障补偿方法与实际相序表示方法相结合的配电网短路电流实用计算方法。
The presented control strategy is tested and verified by three-phase short circuit fault and the results show that this control strategy is effective and reliable.
同时，针对三相短路故障，用数字仿真对控制策略进行了验证，结果表明该控制策略是有效可靠的。
The key points of the iec method for calculating the short circuit current and its heat effect of a three-phase current system are described and elucidated specifically by examples.
介绍iec三相交流系统短路电流计算方法的重点和短路电流热效应计算，并用例题介绍其具体使用情况。
Damage be divided into two: one is a good set of stator shielding, and the occurrence of stator windings, the breakdown phase, the coil turn-to-turn short circuit, overload caused by burnt windings.
损坏情况大体分为两种：一种是定子屏蔽套良好，而定子绕组发生对地、相间击穿，线圈匝间短路，过载而造成绕组烧毁。
The double-winding generators were analyzed using a method for analyzing the electromagnetic torque after a sudden short circuit in a 3-phase synchronous generator.
本文给出了一组改进的估算同步发电机在空载状态下发生出线端突然短路时可能达到的最大电磁转矩近似表达式。
Therefore, it is advisable to take the following method for grid three-phase short-circuit current calculation.
为此，建议采取以下的方法进行电网三相短路电流计算。
Short-phase relay obtains short-phase signal, short-phase protection circuit was formed according to change of output voltage to realize short-phase protection.
用断相保护继电器获取断相信号，据输出电压变化构成断相保护电路实现保护。
The three-phase short circuit currents of bulk electric power system are very high, and the high currents do harm to the working of the system.
针对三相短路电流产生的电动力进行分析，经过受力分析，瞬间较高的电动力对户外柱上真空断路器的影响很大。
Copper busbar and busbar column should be able to sustain electric stress generated by electric current of three-phase symmetrical short-circuit of 50 kiloampere and above.
铜母线和母线支柱应能承受50千安及以上的三相对称短路电流所产生的电应力。
It can provide protection from over current, short circuit, undervoltage, phase failure, leakage lockout, and operation overvoltage.
具有过流、短路、欠压、断相、漏电闭锁、操作过电压等保护。
Two Solutions to the model equivalent parameter estimation are proposed, one based on the three-phase short-circuit capacity, this method works with good computational speed, but accuracy is not high;
对该模型提出两种求解方法，一是基于三相短路容量思想的等值参数估计，计算速度快，但精度不高；
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