为此,建议采取以下的方法进行电网三相短路电流计算。
Therefore, it is advisable to take the following method for grid three-phase short-circuit current calculation.
发电机突然三相短路会导致励磁系统大功率晶体管的损坏,必须对该现象进行分析和研究。
The high-power transistor of exciter will be damaged after the 3-phase circuits' sudden short, which results in starving for the analysis and study of the phenomenon.
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 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.
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;
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;
仿真结果表明所建立的负荷模型在单相短路、两相短路和三相短路条件下均具有良好的稳定性和准确性。
The simulation results suggest that the proposed load model be quite stable and accurate under the single-phase short faulty, two-phase short faulty and three-phase short faulty.
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。
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.
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。
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.
对单机无穷大母线系统进行了公式推导和仿真验证,从理论上探讨了多机系统的三相短路故障临界切除时间求解方法。
The formulae for SMIS are derived and verified by case simulation, the solution of critical clearing time (CCT) of three-phase short fault in MMS is theoretically discussed.
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 paper mainly introduces a kind of stimulatior, It emphasizes on the mathematical mode! of three phase short circuit breakdown and its showing methods.
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。
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.
介绍了小型三相电力变压器线圈短路故障查找的方法和试验时的注意事项。
This paper introduces the trouble shooting methods for the coil short of miniature three-phase power transformer, and points out some notable matters in the test.
介绍了一种适用于三相不接地系统的短路故障限流器。
This paper introduces a novel short circuit fault current limiter applicable to the three-phase ungrounded power systems.
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。
The A302 Manual Starter is a 3-phase manual motor starter and protector with instantaneous magnetic short circuit trip mechanism.
本文主要论述了电力系统中母线上发生三相对称短路时,其动稳定和热稳定的校验问题。
This paper discusses the short-circuit verifying of wires in dynamic stability and heat withstand while the wires are chosen in the design of power system.
基于小波变换的分析方法,提出了基于定子三相电流之间相位对称度检测的定子绕组匝间短路故障在线检测新方法。
Based on wavelet transform, a novel on-line detection method is presented, which is based on the detection of symmetry degree among the stator three-phase line currents phases.
三相感应电动机。防护型。短路转子。
Protected three-phase induction motors with short-circuited rotors.
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。
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.
结果表明了PWM-FCL不但可以快速有效地限制住短路电流,并且在系统发生三相不对称故障时,可以保证故障线路非故障相以及非故障线路的正常运行。
The obtained results show that the PWM-FCL can limit the fault current quickly, and the unfaulted phase(s) and unfaulted line(s) will keep stable operation state when an asymmetry fault occurs.
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。
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。
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.
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