1、

calculation and simulation of negative phase sequence of rail traction system

铁路牵引系统中的负序计算和仿真

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2、

Furthermore, we considered phasor dynamics of values of negative sequence and zero sequence. Analysis of Unbalance Three-phase Circuit and a Practical Circuit for Judging Phase Sequence

对于发电机的负序和零序,采用了等值的电路模型并考虑了其中电压和电流的相量动态。一种相序判定方法分析及其实用电路

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3、

Based on features of negative sequence components in the three-phase system, an islanding detection method based on the active negative sequence component disturbance ( ANSCD) is proposed.

根据三相系统含有负序分量的特点,采用有源负序扰动法进行三相并网逆变器的孤岛检测。

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4、

Active power filter can compensate current components which include distortion and negative sequence current components when it is used in unbalanced three-phase circuit.

电力有源滤波器能动态补偿不对称三相电路的畸变电流、负序电流分量。

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5、

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。

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6、

Negative sequence currents generated in asymmetric short circuit fault and open phase fault are simulated by experiments and the measured experimental results coincide with the requested values, which proves the correctness of protection scheme.

并通过试验方法模拟了发生不对称性短路故障及断相故障时产生的负序电流,试验所得到的实测值和要求值基本吻合,从而验证了保护方案的正确性。

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7、

The design of negative sequence protection is mainly introduced with seriously unbalanced power supply voltage fault, open phase fault and two-phase short circuit fault.

从电源电压严重不平衡故障、断相故障和两相短路故障三方面介绍了负序保护方案设计;

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