The proposed method doesn't need hardware synchronization circuit and can perform the calculation of fundamental positive sequence component of the supply voltage in real time.
这种方法不需要硬件同步电路，能实时地计算电源电压中的基波正序分量。
The zero sequence component and the positive sequence component equations of transmission lines are derived on the basis of telegraph equations.
运用电报方程推导出三线-地耦合传输线零序分量和正序分量传输线方程。
Based on the symmetry component theory, a method of the motor protection is presented by measuring positive, negative and zero sequence current component.
基于对称分量法理论，提出了基于检测正序、负序、零序电流分量的电动机保护方法。
A new directional element based on the fault component positive sequence reactance (FCPSR) is presented.
提出了基于故障分量正序电抗的方向元件。
Based on symmetrical component method and linear superposition principle, the additional positive sequence network after fault is established and the matching index on fault point is defined.
该方法首先运用对称分量法和线性叠加原理建立故障后的附加正序网络并且定义了故障点的匹配指标，进而基于该指标运用遍历搜索方法寻找故障点位置。
The transformation of the instantaneous value symmetry component applied, the positive sequence space vector of fault component of the voltage and current can be derived.
应用瞬时值对称分量变换，可提取电压、电流故障分量的正序空间向量。
These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.
在三相系统中，以正序基波功率的积分作为计量标准，同样可以消除这两方面的不利影响。
These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.
在三相系统中，以正序基波功率的积分作为计量标准，同样可以消除这两方面的不利影响。
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